tps/deploy/setup.sql

------create dev schema and api user-----------------------------------------------------------------------------------------------------------------

DROP SCHEMA IF EXISTS tps CASCADE;
DROP SCHEMA IF EXISTS tpsv CASCADE;

CREATE SCHEMA tps;
COMMENT ON SCHEMA tps IS 'third party source data';

CREATE SCHEMA tpsv;
COMMENT ON SCHEMA tps IS 'third party source views';

DROP USER IF EXISTS api;

CREATE ROLE api WITH
	LOGIN
	NOSUPERUSER
	NOCREATEDB
	NOCREATEROLE
	INHERIT
	NOREPLICATION
	CONNECTION LIMIT -1
	ENCRYPTED PASSWORD 'md56da13b696f737097e0146e47cc0d0985';

-----need to setup all database objects and then grant priveledges to api----------------------------------------------------------------------------

--grant schema USAGE
GRANT USAGE ON SCHEMA tps TO api;
GRANT USAGE ON SCHEMA tpsv TO api;

--grant current table privledges
GRANT SELECT, UPDATE, INSERT, DELETE ON ALL TABLES IN SCHEMA tps TO api;
GRANT SELECT, UPDATE, INSERT, DELETE ON ALL TABLES IN SCHEMA tpsv TO api;

--grant current sequence privledges
GRANT USAGE ON ALL SEQUENCES IN SCHEMA tps TO api;
GRANT USAGE ON ALL SEQUENCES IN SCHEMA tpsv TO api;

--grant future table privledges
ALTER DEFAULT PRIVILEGES IN SCHEMA tps GRANT SELECT, UPDATE, INSERT, DELETE ON TABLES TO api;
ALTER DEFAULT PRIVILEGES IN SCHEMA tpsv GRANT SELECT, UPDATE, INSERT, DELETE ON TABLES TO api;

--grant future sequence privledges
ALTER DEFAULT PRIVILEGES IN SCHEMA tps GRANT USAGE ON SEQUENCES TO api;
ALTER DEFAULT PRIVILEGES IN SCHEMA tpsv GRANT USAGE ON SEQUENCES TO api;


-----create tables-----------------------------------------------------------------------------------------------------------------------------------

-----regex map instructions table

CREATE TABLE tps.map_rm (
    srce text NOT NULL,
    target text NOT NULL,
    regex jsonb,
    seq integer NOT NULL,
    hist jsonb
);
COMMENT ON TABLE tps.map_rm IS 'regex map instructions';

-----return value table

CREATE TABLE tps.map_rv (
    srce text NOT NULL,
    target text NOT NULL,
    retval jsonb NOT NULL,
    map jsonb NOT NULL,
    hist jsonb NOT NULL
);
COMMENT ON TABLE tps.map_rv IS 'return value lookup table';

-----source definition table

CREATE TABLE tps.srce (
    srce text NOT NULL,
    defn jsonb,
    hist jsonb
);
COMMENT ON TABLE tps.srce IS 'source master listing and definition';

-----source data table

CREATE TABLE tps.trans (
    id integer NOT NULL,
    srce text,
    rec jsonb,
    parse jsonb,
    map jsonb,
    allj jsonb,
    ic jsonb,
    logid INTEGER
);
COMMENT ON TABLE tps.trans IS 'source records';
COMMENT ON COLUMN tps.trans.ic IS 'input constraint value';
ALTER TABLE tps.trans ALTER COLUMN id ADD GENERATED BY DEFAULT AS IDENTITY (
    SEQUENCE NAME tps.trans_id_seq
    START WITH 1
    INCREMENT BY 1
    NO MINVALUE
    NO MAXVALUE
    CACHE 1
);

-----import log table

CREATE TABLE tps.trans_log (
    id integer NOT NULL,
    info jsonb
);
COMMENT ON TABLE tps.trans_log IS 'import event information';
ALTER TABLE tps.trans_log ALTER COLUMN id ADD GENERATED BY DEFAULT AS IDENTITY (
    SEQUENCE NAME tps.trans_log_id_seq
    START WITH 1
    INCREMENT BY 1
    NO MINVALUE
    NO MAXVALUE
    CACHE 1
);


-------------primary keys----------------------------------------------------------------------------------------------------------------------------

ALTER TABLE ONLY tps.map_rm
    ADD CONSTRAINT map_rm_pk PRIMARY KEY (srce, target);

ALTER TABLE ONLY tps.map_rv
    ADD CONSTRAINT map_rv_pk PRIMARY KEY (srce, target, retval);

ALTER TABLE ONLY tps.srce
    ADD CONSTRAINT srce_pkey PRIMARY KEY (srce);

ALTER TABLE ONLY tps.trans_log
    ADD CONSTRAINT trans_log_pkey PRIMARY KEY (id);

ALTER TABLE ONLY tps.trans
    ADD CONSTRAINT trans_pkey PRIMARY KEY (id);

-------------indexes---------------------------------------------------------------------------------------------------------------------------------

CREATE INDEX trans_allj ON tps.trans USING gin (allj);

CREATE INDEX trans_rec ON tps.trans USING gin (rec);

CREATE INDEX trans_srce ON tps.trans USING btree (srce);

-------------foreign keys----------------------------------------------------------------------------------------------------------------------------

ALTER TABLE ONLY tps.map_rm
    ADD CONSTRAINT map_rm_fk_srce FOREIGN KEY (srce) REFERENCES tps.srce(srce);

ALTER TABLE ONLY tps.map_rv
    ADD CONSTRAINT map_rv_fk_rm FOREIGN KEY (srce, target) REFERENCES tps.map_rm(srce, target);

ALTER TABLE ONLY tps.trans
    ADD CONSTRAINT trans_srce_fkey FOREIGN KEY (srce) REFERENCES tps.srce(srce);

ALTER TABLE ONLY tps.trans
    ADD CONSTRAINT trans_logid_fkey FOREIGN KEY (logid) REFERENCES tps.trans_log(id);

-------------create functions------------------------------------------------------------------------------------------------------------------------

-----set source
DROP FUNCTION IF EXISTS tps.srce_set(jsonb);
CREATE FUNCTION tps.srce_set(_defn jsonb) RETURNS jsonb
AS
$f$
DECLARE 
    _message jsonb;
    _MESSAGE_TEXT text;
    _PG_EXCEPTION_DETAIL text;
    _PG_EXCEPTION_HINT text;
    _rebuild BOOLEAN;
BEGIN

    ---------test if anythign is changing--------------------------------------------------------------------------------------------

    IF _defn = (SELECT defn FROM tps.srce WHERE srce = _defn->>'name') THEN
         _message:= 
        (
            $$
                {
                "status":"complete",
                "message":"source was not different no action taken"
                }
            $$::jsonb
        );
        RETURN _message;
    END IF;

    ---------if the constraint definition is changing, rebuild for existing records---------------------------------------------------

    SELECT 
        NOT (_defn->'constraint' = (SELECT defn->'constraint' FROM tps.srce WHERE srce = _defn->>'name'))
    INTO
        _rebuild;

    RAISE NOTICE '%',_rebuild::text;

    ---------do merge-----------------------------------------------------------------------------------------------------------------

    INSERT INTO
        tps.srce (srce, defn, hist)
    SELECT
        --extract name from defintion
        _defn->>'name'
        --add current timestamp to defintions
        ,_defn
        --add definition
        ,jsonb_build_object(
                'hist_defn',_defn
                ,'effective',jsonb_build_array(CURRENT_TIMESTAMP,null::timestamptz)
        ) || '[]'::jsonb
    ON CONFLICT ON CONSTRAINT srce_pkey DO UPDATE
        SET
            defn = _defn
            ,hist = 
                    --the new definition going to position -0-
                    jsonb_build_object(
                        'hist_defn',_defn
                        ,'effective',jsonb_build_array(CURRENT_TIMESTAMP,null::timestamptz)
                    ) 
                    --the previous definition, set upper bound of effective range which was previously null
                    || jsonb_set(
                        srce.hist
                        ,'{0,effective,1}'::text[]
                        ,to_jsonb(CURRENT_TIMESTAMP)
                    );
    --rebuild constraint key if necessary---------------------------------------------------------------------------------------

    IF _rebuild THEN
        WITH
        rebuild AS (
            SELECT
                j.srce
                ,j.rec
                ,j.id
                --aggregate back to the record since multiple paths may be listed in the constraint
                ,tps.jsonb_concat_obj(
                    jsonb_build_object(
                        --the new json key is the path itself
                        cons.path->>0
                        ,j.rec#>((cons.path->>0)::text[])
                    ) 
                ) json_key
            FROM
                tps.trans j
                INNER JOIN tps.srce s ON
                    s.srce = j.srce
                JOIN LATERAL jsonb_array_elements(s.defn->'constraint') WITH ORDINALITY cons(path, seq)  ON TRUE
            WHERE
                s.srce = _defn->>'name'
            GROUP BY
                j.rec
                ,j.id
        )
        UPDATE
            tps.trans t
        SET
            ic = r.json_key
        FROM
            rebuild r
        WHERE
            t.id = r.id;
         _message:= 
        (
            $$
                {
                "status":"complete",
                "message":"source set and constraint rebuilt on existing records"
                }
            $$::jsonb
        );
    ELSE
        _message:= 
        (
            $$
                {
                "status":"complete",
                "message":"source set"
                }
            $$::jsonb
        );
    END IF;

    RETURN _message;

    

    EXCEPTION WHEN OTHERS THEN
        GET STACKED DIAGNOSTICS 
            _MESSAGE_TEXT = MESSAGE_TEXT,
            _PG_EXCEPTION_DETAIL = PG_EXCEPTION_DETAIL,
            _PG_EXCEPTION_HINT = PG_EXCEPTION_HINT;
        _message:= 
        ($$
            {
                "status":"fail",
                "message":"error importing data"
            }
        $$::jsonb)
        ||jsonb_build_object('message_text',_MESSAGE_TEXT)
        ||jsonb_build_object('pg_exception_detail',_PG_EXCEPTION_DETAIL);
    RETURN _message;
END;
$f$
LANGUAGE plpgsql

-----generate sql to create select based on schema
DROP FUNCTION IF EXISTS tps.build_srce_view_sql(text, text);
CREATE OR REPLACE FUNCTION tps.build_srce_view_sql(_srce text, _schema text) RETURNS TEXT
AS
$f$
DECLARE	
	--_schema text;
	_path text[];
	--_srce text;
	_sql text;
BEGIN
    --_schema:= 'default';
	_path:= ARRAY['schemas',_schema]::text[];
	--_srce:= 'dcard';
SELECT
	'CREATE VIEW tpsv.'||_srce||'_'||_path[2]||' AS SELECT '||string_agg('(allj#>>'''||r.PATH::text||''')::'||r.type||' AS "'||r.column_name||'"',', ')||' FROM tps.trans WHERE srce = '''||_srce||''''
INTO	
	_sql
FROM
	tps.srce
	JOIN LATERAL jsonb_array_elements(defn#>_path) ae(v) ON TRUE
	JOIN LATERAL jsonb_to_record (ae.v) AS r(PATH text[], "type" text, column_name text) ON TRUE 
WHERE
	srce = _srce
GROUP BY
	srce.srce;

RETURN _sql;
RAISE NOTICE '%',_sql;

END
$f$
LANGUAGE plpgsql;

-----set map defintion from json argument
CREATE OR REPLACE FUNCTION tps.srce_map_def_set(_defn jsonb) RETURNS jsonb
AS
$f$

DECLARE
    _message jsonb;
    _MESSAGE_TEXT text;
    _PG_EXCEPTION_DETAIL text;
    _PG_EXCEPTION_HINT text;

BEGIN

    BEGIN

        INSERT INTO
            tps.map_rm (srce, target, regex, seq, hist)
        SELECT
            --data source
            ae.r->>'srce'
            --map name
            ,ae.r->>'name'
            --map definition
            ,ae.r->'regex'
            --map aggregation sequence
            ,(ae.r->>'sequence')::INTEGER
            --history definition
            ,jsonb_build_object(
                'hist_defn',ae.r
                ,'effective',jsonb_build_array(CURRENT_TIMESTAMP,null::timestamptz)
            ) || '[]'::jsonb
        FROM
            jsonb_array_elements(_defn) ae(r)
        ON CONFLICT ON CONSTRAINT map_rm_pk DO UPDATE SET
            srce = excluded.srce
            ,target = excluded.target
            ,regex = excluded.regex
            ,seq = excluded.seq
            ,hist = 
                    --the new definition going to position -0-
                    jsonb_build_object(
                        'hist_defn',excluded.regex
                        ,'effective',jsonb_build_array(CURRENT_TIMESTAMP,null::timestamptz)
                    ) 
                    --the previous definition, set upper bound of effective range which was previously null
                    || jsonb_set(
                        map_rm.hist
                        ,'{0,effective,1}'::text[]
                        ,to_jsonb(CURRENT_TIMESTAMP)
                    );

    EXCEPTION WHEN OTHERS THEN

        GET STACKED DIAGNOSTICS 
                _MESSAGE_TEXT = MESSAGE_TEXT,
                _PG_EXCEPTION_DETAIL = PG_EXCEPTION_DETAIL,
                _PG_EXCEPTION_HINT = PG_EXCEPTION_HINT;
            _message:= 
            ($$
                {
                    "status":"fail",
                    "message":"error setting definition"
                }
            $$::jsonb)
            ||jsonb_build_object('message_text',_MESSAGE_TEXT)
            ||jsonb_build_object('pg_exception_detail',_PG_EXCEPTION_DETAIL);
            return _message;
    END;

    _message:= jsonb_build_object('status','complete','message','definition has been set');
    return _message;

END;
$f$
language plpgsql;


------------build report for unmapped items---------------------------------------------------------------------------------------------------------------------------------------------

CREATE OR REPLACE FUNCTION tps.jsonb_concat(
    state jsonb,
    concat jsonb)
  RETURNS jsonb AS
$BODY$
BEGIN
	--RAISE notice 'state is %', state;
	--RAISE notice 'concat is %', concat;
	RETURN state || concat;
END;
$BODY$
  LANGUAGE plpgsql VOLATILE
  COST 100;

DROP AGGREGATE IF EXISTS tps.jsonb_concat_obj(jsonb);
CREATE AGGREGATE tps.jsonb_concat_obj(jsonb) (
  SFUNC=tps.jsonb_concat,
  STYPE=jsonb,
  INITCOND='{}'
);


DROP FUNCTION IF EXISTS tps.report_unmapped(text);
CREATE FUNCTION tps.report_unmapped(_srce text) RETURNS TABLE 
(
    source text, 
    map text,
    ret_val jsonb,
    "count" bigint
)
LANGUAGE plpgsql
AS
$f$
BEGIN

/*
first get distinct target json values
then apply regex
*/

RETURN QUERY
WITH

--------------------apply regex operations to transactions---------------------------------------------------------------------------------

rx AS (
SELECT 
    t.srce,
    t.id,
    t.rec,
    m.target,
    m.seq,
    regex->>'function' regex_function,
    e.v ->> 'field' result_key_name,
    e.v ->> 'key' target_json_path,
    e.v ->> 'flag' regex_options_flag,
    e.v->>'map' map_intention,
    e.v->>'retain' retain_result,
    e.v->>'regex' regex_expression,
    e.rn target_item_number,
    COALESCE(mt.rn,rp.rn,1) result_number,
    mt.mt rx_match,
    rp.rp rx_replace,
    --------------------------json key name assigned to return value-----------------------------------------------------------------------
    CASE e.v->>'map'
        WHEN 'y' THEN
            e.v->>'field'
        ELSE
            null
    END map_key,
    --------------------------json value resulting from regular expression-----------------------------------------------------------------
    CASE e.v->>'map'
        WHEN 'y' THEN
            CASE regex->>'function'
                WHEN 'extract' THEN
                    CASE WHEN array_upper(mt.mt,1)=1 
                        THEN to_json(mt.mt[1])
                        ELSE array_to_json(mt.mt)
                    END::jsonb
                WHEN 'replace' THEN
                    to_jsonb(rp.rp)
                ELSE
                    '{}'::jsonb
            END
        ELSE
            NULL
    END map_val,
    --------------------------flag for if retruned regex result is stored as a new part of the final json output---------------------------
    CASE e.v->>'retain'
        WHEN 'y' THEN
            e.v->>'field'
        ELSE
            NULL
    END retain_key,
    --------------------------push regex result into json object---------------------------------------------------------------------------
    CASE e.v->>'retain'
        WHEN 'y' THEN
            CASE regex->>'function'
                WHEN 'extract' THEN
                    CASE WHEN array_upper(mt.mt,1)=1 
                        THEN to_json(trim(mt.mt[1]))
                        ELSE array_to_json(mt.mt)
                    END::jsonb
                WHEN 'replace' THEN
                    to_jsonb(rtrim(rp.rp))
                ELSE
                    '{}'::jsonb
            END
        ELSE
            NULL
    END retain_val
FROM 
    --------------------------start with all regex maps------------------------------------------------------------------------------------
    tps.map_rm m
    --------------------------isolate matching basis to limit map to only look at certain json---------------------------------------------
    JOIN LATERAL jsonb_array_elements(m.regex->'where') w(v) ON TRUE
    --------------------------break out array of regluar expressions in the map------------------------------------------------------------
    JOIN LATERAL jsonb_array_elements(m.regex->'defn') WITH ORDINALITY e(v, rn) ON true
    --------------------------join to main transaction table but only certain key/values are included--------------------------------------
    INNER JOIN tps.trans t ON 
        t.srce = m.srce AND
        t.rec @> w.v
    --------------------------each regex references a path to the target value, extract the target from the reference and do regex---------
    LEFT JOIN LATERAL regexp_matches(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text,COALESCE(e.v ->> 'flag','')) WITH ORDINALITY mt(mt, rn) ON
        m.regex->>'function' = 'extract'
    --------------------------same as above but for a replacement type function------------------------------------------------------------
    LEFT JOIN LATERAL regexp_replace(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text, e.v ->> 'replace'::text,e.v ->> 'flag') WITH ORDINALITY rp(rp, rn) ON
        m.regex->>'function' = 'replace'
WHERE
    --t.allj IS NULL
    t.srce = _srce AND
    e.v @> '{"map":"y"}'::jsonb
    --rec @> '{"Transaction":"ACH Credits","Transaction":"ACH Debits"}'
    --rec @> '{"Description":"CHECK 93013270 086129935"}'::jsonb
/*
ORDER BY 
    t.id DESC,
    m.target,
    e.rn,
    COALESCE(mt.rn,rp.rn,1)
*/
)

--SELECT * FROM rx LIMIT 100


, agg_to_target_items AS (
SELECT 
    srce
    ,id
    ,target
    ,seq
    ,map_intention
    ,regex_function
    ,target_item_number
    ,result_key_name
    ,target_json_path
    ,CASE WHEN map_key IS NULL 
        THEN    
            NULL 
        ELSE 
            jsonb_build_object(
                map_key,
                CASE WHEN max(result_number) = 1
                    THEN
                        jsonb_agg(map_val ORDER BY result_number) -> 0
                    ELSE
                        jsonb_agg(map_val ORDER BY result_number)
                END
            ) 
    END map_val
    ,CASE WHEN retain_key IS NULL 
        THEN 
            NULL 
        ELSE 
            jsonb_build_object(
                retain_key,
                CASE WHEN max(result_number) = 1
                    THEN
                        jsonb_agg(retain_val ORDER BY result_number) -> 0
                    ELSE
                        jsonb_agg(retain_val ORDER BY result_number)
                END
            ) 
    END retain_val
FROM 
    rx
GROUP BY
    srce
    ,id
    ,target
    ,seq
    ,map_intention
    ,regex_function
    ,target_item_number
    ,result_key_name
    ,target_json_path
    ,map_key
    ,retain_key
)

--SELECT * FROM agg_to_target_items LIMIT 100


, agg_to_target AS (
SELECT
    srce
    ,id
    ,target
    ,seq
    ,map_intention
    ,tps.jsonb_concat_obj(COALESCE(map_val,'{}'::JSONB)) map_val
    ,jsonb_strip_nulls(tps.jsonb_concat_obj(COALESCE(retain_val,'{}'::JSONB))) retain_val
FROM
    agg_to_target_items
GROUP BY
    srce
    ,id
    ,target
    ,seq
    ,map_intention
)


, agg_to_ret AS (
SELECT
	srce
	,target
	,seq
	,map_intention
	,map_val
	,retain_val
	,count(*) "count"
FROM 
	agg_to_target
GROUP BY
	srce
	,target
	,seq
	,map_intention
	,map_val
	,retain_val
)

, link_map AS (
SELECT
    a.srce
    ,a.target
    ,a.seq
    ,a.map_intention
    ,a.map_val
    ,a."count"
    ,a.retain_val
    ,v.map mapped_val
FROM
    agg_to_ret a
    LEFT OUTER JOIN tps.map_rv v ON
        v.srce = a.srce AND
        v.target = a.target AND
        v.retval = a.map_val
)
SELECT
    l.srce
    ,l.target
    ,l.map_val
    ,l."count"
FROM
    link_map l
WHERE
    l.mapped_val IS NULL
ORDER BY
    l.srce
    ,l.target
    ,l."count" desc;
END;
$f$;


-------------------create trigger to map imported items------------------------------------------------------------------------------------------------------

CREATE OR REPLACE FUNCTION tps.trans_insert_map() RETURNS TRIGGER AS $f$
    BEGIN
        IF (TG_OP = 'INSERT') THEN
            WITH
            --------------------apply regex operations to transactions-----------------------------------------------------------------------------------

            rx AS (
            SELECT 
                t.srce,
                t.id,
                t.rec,
                m.target,
                m.seq,
                regex->>'function' regex_function,
                e.v ->> 'field' result_key_name,
                e.v ->> 'key' target_json_path,
                e.v ->> 'flag' regex_options_flag,
                e.v->>'map' map_intention,
                e.v->>'retain' retain_result,
                e.v->>'regex' regex_expression,
                e.rn target_item_number,
                COALESCE(mt.rn,rp.rn,1) result_number,
                mt.mt rx_match,
                rp.rp rx_replace,
                CASE e.v->>'map'
                    WHEN 'y' THEN
                        e.v->>'field'
                    ELSE
                        null
                END map_key,
                CASE e.v->>'map'
                    WHEN 'y' THEN
                        CASE regex->>'function'
                            WHEN 'extract' THEN
                                CASE WHEN array_upper(mt.mt,1)=1 
                                    THEN to_json(mt.mt[1])
                                    ELSE array_to_json(mt.mt)
                                END::jsonb
                            WHEN 'replace' THEN
                                to_jsonb(rp.rp)
                            ELSE
                                '{}'::jsonb
                        END
                    ELSE
                        NULL
                END map_val,
                CASE e.v->>'retain'
                    WHEN 'y' THEN
                        e.v->>'field'
                    ELSE
                        NULL
                END retain_key,
                CASE e.v->>'retain'
                    WHEN 'y' THEN
                        CASE regex->>'function'
                            WHEN 'extract' THEN
                                CASE WHEN array_upper(mt.mt,1)=1 
                                    THEN to_json(trim(mt.mt[1]))
                                    ELSE array_to_json(mt.mt)
                                END::jsonb
                            WHEN 'replace' THEN
                                to_jsonb(rtrim(rp.rp))
                            ELSE
                                '{}'::jsonb
                        END
                    ELSE
                        NULL
                END retain_val
            FROM 
                tps.map_rm m
                LEFT JOIN LATERAL jsonb_array_elements(m.regex->'where') w(v) ON TRUE
                INNER JOIN new_table t ON 
                    t.srce = m.srce AND
                    t.rec @> w.v
                LEFT JOIN LATERAL jsonb_array_elements(m.regex->'defn') WITH ORDINALITY e(v, rn) ON true
                LEFT JOIN LATERAL regexp_matches(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text,COALESCE(e.v ->> 'flag','')) WITH ORDINALITY mt(mt, rn) ON
                    m.regex->>'function' = 'extract'
                LEFT JOIN LATERAL regexp_replace(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text, e.v ->> 'replace'::text,e.v ->> 'flag') WITH ORDINALITY rp(rp, rn) ON
                    m.regex->>'function' = 'replace'
            ORDER BY 
                t.id DESC,
                m.target,
                e.rn,
                COALESCE(mt.rn,rp.rn,1)
            )

            --SELECT count(*) FROM rx LIMIT 100


            , agg_to_target_items AS (
            SELECT 
                srce
                ,id
                ,target
                ,seq
                ,map_intention
                ,regex_function
                ,target_item_number
                ,result_key_name
                ,target_json_path
                ,CASE WHEN map_key IS NULL 
                    THEN    
                        NULL 
                    ELSE 
                        jsonb_build_object(
                            map_key,
                            CASE WHEN max(result_number) = 1
                                THEN
                                    jsonb_agg(map_val ORDER BY result_number) -> 0
                                ELSE
                                    jsonb_agg(map_val ORDER BY result_number)
                            END
                        ) 
                END map_val
                ,CASE WHEN retain_key IS NULL 
                    THEN 
                        NULL 
                    ELSE 
                        jsonb_build_object(
                            retain_key,
                            CASE WHEN max(result_number) = 1
                                THEN
                                    jsonb_agg(retain_val ORDER BY result_number) -> 0
                                ELSE
                                    jsonb_agg(retain_val ORDER BY result_number)
                            END
                        ) 
                END retain_val
            FROM 
                rx
            GROUP BY
                srce
                ,id
                ,target
                ,seq
                ,map_intention
                ,regex_function
                ,target_item_number
                ,result_key_name
                ,target_json_path
                ,map_key
                ,retain_key
            )

            --SELECT * FROM agg_to_target_items LIMIT 100


            , agg_to_target AS (
            SELECT
                srce
                ,id
                ,target
                ,seq
                ,map_intention
                ,tps.jsonb_concat_obj(COALESCE(map_val,'{}'::JSONB)) map_val
                ,jsonb_strip_nulls(tps.jsonb_concat_obj(COALESCE(retain_val,'{}'::JSONB))) retain_val
            FROM
                agg_to_target_items
            GROUP BY
                srce
                ,id
                ,target
                ,seq
                ,map_intention
            ORDER BY
                id
            )


            --SELECT * FROM agg_to_target


            , link_map AS (
            SELECT
                a.srce
                ,a.id
                ,a.target
                ,a.seq
                ,a.map_intention
                ,a.map_val
                ,a.retain_val retain_value
                ,v.map
            FROM
                agg_to_target a
                LEFT OUTER JOIN tps.map_rv v ON
                    v.srce = a.srce AND
                    v.target = a.target AND
                    v.retval = a.map_val
            )

            --SELECT * FROM link_map

            , agg_to_id AS (
            SELECT
                srce
                ,id
                ,tps.jsonb_concat_obj(COALESCE(retain_value,'{}'::jsonb) ORDER BY seq DESC) retain_val
                ,tps.jsonb_concat_obj(COALESCE(map,'{}'::jsonb)) map
            FROM
                link_map
            GROUP BY
                srce
                ,id
            )

            --SELECT agg_to_id.srce, agg_to_id.id, jsonb_pretty(agg_to_id.retain_val) , jsonb_pretty(agg_to_id.map) FROM agg_to_id ORDER BY id desc LIMIT 100

            --create a complete list of all new inserts assuming some do not have maps (left join)
            ,join_all AS (
                SELECT
                    n.srce
                    ,n.id
                    ,n.rec
                    ,a.retain_val parse
                    ,a.map
                    ,n.rec||COALESCE(a.map||a.retain_val,'{}'::jsonb) allj
                FROM
                    new_table n
                    LEFT OUTER JOIN agg_to_id a ON
                        a.id = n.id
            )

            --update trans with join_all recs
            UPDATE
                tps.trans t
            SET
                parse = a.parse
                ,map = a.map
                ,allj = a.allj
            FROM
               join_all a
            WHERE
                t.id = a.id;

        END IF;
        RETURN NULL;
    END;
$f$ LANGUAGE plpgsql;

CREATE TRIGGER trans_insert
    AFTER INSERT ON tps.trans
    REFERENCING NEW TABLE AS new_table
    FOR EACH STATEMENT EXECUTE PROCEDURE tps.trans_insert_map();


------------------import data-------------------------------------------------------------------------------------------------------------------------------------

DROP FUNCTION IF EXISTS tps.srce_import(text, jsonb);
CREATE OR REPLACE FUNCTION tps.srce_import(_srce text, _recs jsonb) RETURNS jsonb

/*--------------------------------------------------------
0. test if source exists
1. create pending list
2. get unqiue pending keys
3. see which keys not already in tps.trans
4. insert pending records associated with keys that are not already in trans
5. insert summary to log table
*/---------------------------------------------------------

--to-do
--return infomation to a client via json or composite type


AS $f$
DECLARE
    _t text;
    _c text;
    _log_info jsonb;
    _log_id text;
    _cnt numeric;
    _message jsonb;
    --_recs jsonb;
    --_srce text;
    _defn jsonb;
    _MESSAGE_TEXT text;
    _PG_EXCEPTION_DETAIL text;
    _PG_EXCEPTION_HINT text;

BEGIN

    --_path := 'C:\users\fleet\downloads\discover-recentactivity-20171031.csv';
    --_srce := 'dcard';
    --_recs:= $$[{"Trans. Date":"1/2/2018","Post Date":"1/2/2018","Description":"GOOGLE *YOUTUBE VIDEOS G.CO/HELPPAY#CAP0H07TXV","Amount":4.26,"Category":"Services"},{"Trans. Date":"1/2/2018","Post Date":"1/2/2018","Description":"MICROSOFT *ONEDRIVE 800-642-7676 WA","Amount":4.26,"Category":"Services"},{"Trans. Date":"1/3/2018","Post Date":"1/3/2018","Description":"CLE CLINIC PT PMTS 216-445-6249 OHAK2C57F2F0B3","Amount":200,"Category":"Medical Services"},{"Trans. Date":"1/4/2018","Post Date":"1/4/2018","Description":"AT&T *PAYMENT 800-288-2020 TX","Amount":57.14,"Category":"Services"},{"Trans. Date":"1/4/2018","Post Date":"1/7/2018","Description":"WWW.KOHLS.COM #0873 MIDDLETOWN OH","Amount":-7.9,"Category":"Payments and Credits"},{"Trans. Date":"1/5/2018","Post Date":"1/7/2018","Description":"PIZZA HUT 007946 STOW OH","Amount":9.24,"Category":"Restaurants"},{"Trans. Date":"1/5/2018","Post Date":"1/7/2018","Description":"SUBWAY 00044289255 STOW OH","Amount":10.25,"Category":"Restaurants"},{"Trans. Date":"1/6/2018","Post Date":"1/7/2018","Description":"ACME NO. 17 STOW OH","Amount":103.98,"Category":"Supermarkets"},{"Trans. Date":"1/6/2018","Post Date":"1/7/2018","Description":"DISCOUNT DRUG MART 32 STOW OH","Amount":1.69,"Category":"Merchandise"},{"Trans. Date":"1/6/2018","Post Date":"1/7/2018","Description":"DISCOUNT DRUG MART 32 STOW OH","Amount":2.19,"Category":"Merchandise"},{"Trans. Date":"1/9/2018","Post Date":"1/9/2018","Description":"CIRCLE K 05416 STOW OH00947R","Amount":3.94,"Category":"Gasoline"},{"Trans. Date":"1/9/2018","Post Date":"1/9/2018","Description":"CIRCLE K 05416 STOW OH00915R","Amount":52.99,"Category":"Gasoline"},{"Trans. Date":"1/13/2018","Post Date":"1/13/2018","Description":"AUTOZONE #0722 STOW OH","Amount":85.36,"Category":"Automotive"},{"Trans. Date":"1/13/2018","Post Date":"1/13/2018","Description":"DISCOUNT DRUG MART 32 STOW OH","Amount":26.68,"Category":"Merchandise"},{"Trans. Date":"1/13/2018","Post Date":"1/13/2018","Description":"EL CAMPESINO STOW OH","Amount":6.5,"Category":"Restaurants"},{"Trans. Date":"1/13/2018","Post Date":"1/13/2018","Description":"TARGET STOW OH","Amount":197.9,"Category":"Merchandise"},{"Trans. Date":"1/14/2018","Post Date":"1/14/2018","Description":"DISCOUNT DRUG MART 32 STOW OH","Amount":13.48,"Category":"Merchandise"},{"Trans. Date":"1/15/2018","Post Date":"1/15/2018","Description":"TARGET.COM * 800-591-3869 MN","Amount":22.41,"Category":"Merchandise"},{"Trans. Date":"1/16/2018","Post Date":"1/16/2018","Description":"BUFFALO WILD WINGS KENT KENT OH","Amount":63.22,"Category":"Restaurants"},{"Trans. Date":"1/16/2018","Post Date":"1/16/2018","Description":"PARTA - KCG KENT OH","Amount":4,"Category":"Government Services"},{"Trans. Date":"1/16/2018","Post Date":"1/16/2018","Description":"REMEMBERNHU 402-935-7733 IA","Amount":60,"Category":"Services"},{"Trans. Date":"1/16/2018","Post Date":"1/16/2018","Description":"TARGET.COM * 800-591-3869 MN","Amount":44.81,"Category":"Merchandise"},{"Trans. Date":"1/16/2018","Post Date":"1/16/2018","Description":"TREE CITY COFFEE & PASTR KENT OH","Amount":17.75,"Category":"Restaurants"},{"Trans. Date":"1/17/2018","Post Date":"1/17/2018","Description":"BESTBUYCOM805526794885 888-BESTBUY MN","Amount":343.72,"Category":"Merchandise"},{"Trans. Date":"1/19/2018","Post Date":"1/19/2018","Description":"DISCOUNT DRUG MART 32 STOW OH","Amount":5.98,"Category":"Merchandise"},{"Trans. Date":"1/19/2018","Post Date":"1/19/2018","Description":"U-HAUL OF KENT-STOW KENT OH","Amount":15.88,"Category":"Travel/ Entertainment"},{"Trans. Date":"1/19/2018","Post Date":"1/19/2018","Description":"WALMART GROCERY 800-966-6546 AR","Amount":5.99,"Category":"Supermarkets"},{"Trans. Date":"1/19/2018","Post Date":"1/19/2018","Description":"WALMART GROCERY 800-966-6546 AR","Amount":17.16,"Category":"Supermarkets"},{"Trans. Date":"1/19/2018","Post Date":"1/19/2018","Description":"WALMART GROCERY 800-966-6546 AR","Amount":500.97,"Category":"Supermarkets"},{"Trans. Date":"1/20/2018","Post Date":"1/20/2018","Description":"GOOGLE *GOOGLE PLAY G.CO/HELPPAY#CAP0H

----------------------------------------------------test if source exists----------------------------------------------------------------------------------

    SELECT
        defn
    INTO
        _defn
    FROM
        tps.srce    
    WHERE
        srce = _srce;

    IF _defn IS NULL THEN
        _message:= 
        format(
            $$
                {
                    "status":"fail",
                    "message":"source %L does not exists"
                }
            $$,
            _srce
        )::jsonb;
        RETURN _message;
    END IF;

    -------------unwrap the json record and apply the path(s) of the constraint to build a constraint key per record-----------------------------------------------------------------------------------

    WITH
    pending_list AS (
        SELECT
            _srce srce
            ,j.rec
            ,j.id
            --aggregate back to the record since multiple paths may be listed in the constraint
            --it is unclear why the "->>0" is required to correctly extract the text array from the jsonb
            ,tps.jsonb_concat_obj(
                jsonb_build_object(
                    --the new json key is the path itself
                    cons.path->>0
                    ,j.rec#>((cons.path->>0)::text[])
                ) 
            ) json_key
        FROM
            jsonb_array_elements(_recs) WITH ORDINALITY j(rec,id)
            JOIN LATERAL jsonb_array_elements(_defn->'constraint') WITH ORDINALITY cons(path, seq)  ON TRUE
        GROUP BY
            j.rec
            ,j.id
    )

    -----------create a unique list of keys from staged rows------------------------------------------------------------------------------------------

    , pending_keys AS (
        SELECT DISTINCT
            json_key
        FROM 
            pending_list
    )

    -----------list of keys already loaded to tps-----------------------------------------------------------------------------------------------------

    , matched_keys AS (
        SELECT DISTINCT
            k.json_key
        FROM
            pending_keys k
            INNER JOIN tps.trans t ON
                t.ic = k.json_key
    )

    -----------return unique keys that are not already in tps.trans-----------------------------------------------------------------------------------

    , unmatched_keys AS (
    SELECT
        json_key
    FROM
        pending_keys

    EXCEPT

    SELECT
        json_key
    FROM
        matched_keys
    )

    --------build log record-------------------+------------------------------------------------------------------------------------------------

    , logged AS (
    INSERT INTO
        tps.trans_log (info)
    SELECT
        JSONB_BUILD_OBJECT('time_stamp',CURRENT_TIMESTAMP)
        ||JSONB_BUILD_OBJECT('srce',_srce)
        --||JSONB_BUILD_OBJECT('path',_path)
        ||JSONB_BUILD_OBJECT('not_inserted',
            (
                SELECT 
                    jsonb_agg(json_key)
                FROM
                    matched_keys
            )
        )
        ||JSONB_BUILD_OBJECT('inserted',
            (
                SELECT 
                    jsonb_agg(json_key)
                FROM
                    unmatched_keys
            )
        )
    RETURNING *
    )

    -----------insert pending rows that have key with no trans match-----------------------------------------------------------------------------------
    --need to look into mapping the transactions prior to loading

    , inserted AS (
        INSERT INTO
            tps.trans (srce, rec, ic, logid)
        SELECT
            pl.srce
            ,pl.rec
            ,pl.json_key
            ,logged.id
        FROM 
            pending_list pl
            INNER JOIN unmatched_keys u ON
                u.json_key = pl.json_key
            CROSS JOIN logged
        ORDER BY
            pl.id ASC
        ----this conflict is only if an exact duplicate rec json happens, which will be rejected
        ----therefore, records may not be inserted due to ay matches with certain json fields, or if the entire json is a duplicate, reason is not specified
        RETURNING *
    )

    SELECT
        id
        ,info
    INTO
        _log_id
        ,_log_info
    FROM
        logged;

    --RAISE NOTICE 'import logged under id# %, info: %', _log_id, _log_info;

    _message:= 
    (
        $$
            {
            "status":"complete"
            }
        $$::jsonb
    )||jsonb_build_object('details',_log_info);

    RETURN _message;

EXCEPTION WHEN OTHERS THEN
    GET STACKED DIAGNOSTICS 
        _MESSAGE_TEXT = MESSAGE_TEXT,
        _PG_EXCEPTION_DETAIL = PG_EXCEPTION_DETAIL,
        _PG_EXCEPTION_HINT = PG_EXCEPTION_HINT;
    _message:= 
    ($$
        {
            "status":"fail",
            "message":"error importing data"
        }
    $$::jsonb)
    ||jsonb_build_object('message_text',_MESSAGE_TEXT)
    ||jsonb_build_object('pg_exception_detail',_PG_EXCEPTION_DETAIL);
    return _message;
END;
$f$
LANGUAGE plpgsql;


---------------overwrite maps--------------------------------------------------------------------------------------------------------------

CREATE OR REPLACE FUNCTION tps.srce_map_overwrite(_srce text) RETURNS jsonb
AS
$f$
DECLARE
    _message jsonb;
    _MESSAGE_TEXT text;
    _PG_EXCEPTION_DETAIL text;
    _PG_EXCEPTION_HINT text;

BEGIN
    WITH
    --------------------apply regex operations to transactions-----------------------------------------------------------------------------------

    rx AS (
    SELECT 
        t.srce,
        t.id,
        t.rec,
        m.target,
        m.seq,
        regex->>'function' regex_function,
        e.v ->> 'field' result_key_name,
        e.v ->> 'key' target_json_path,
        e.v ->> 'flag' regex_options_flag,
        e.v->>'map' map_intention,
        e.v->>'retain' retain_result,
        e.v->>'regex' regex_expression,
        e.rn target_item_number,
        COALESCE(mt.rn,rp.rn,1) result_number,
        mt.mt rx_match,
        rp.rp rx_replace,
        CASE e.v->>'map'
            WHEN 'y' THEN
                e.v->>'field'
            ELSE
                null
        END map_key,
        CASE e.v->>'map'
            WHEN 'y' THEN
                CASE regex->>'function'
                    WHEN 'extract' THEN
                        CASE WHEN array_upper(mt.mt,1)=1 
                            THEN to_json(mt.mt[1])
                            ELSE array_to_json(mt.mt)
                        END::jsonb
                    WHEN 'replace' THEN
                        to_jsonb(rp.rp)
                    ELSE
                        '{}'::jsonb
                END
            ELSE
                NULL
        END map_val,
        CASE e.v->>'retain'
            WHEN 'y' THEN
                e.v->>'field'
            ELSE
                NULL
        END retain_key,
        CASE e.v->>'retain'
            WHEN 'y' THEN
                CASE regex->>'function'
                    WHEN 'extract' THEN
                        CASE WHEN array_upper(mt.mt,1)=1 
                            THEN to_json(trim(mt.mt[1]))
                            ELSE array_to_json(mt.mt)
                        END::jsonb
                    WHEN 'replace' THEN
                        to_jsonb(rtrim(rp.rp))
                    ELSE
                        '{}'::jsonb
                END
            ELSE
                NULL
        END retain_val
    FROM 
        tps.map_rm m
        LEFT JOIN LATERAL jsonb_array_elements(m.regex->'where') w(v) ON TRUE
        INNER JOIN tps.trans t ON 
            t.srce = m.srce AND
            t.rec @> w.v
        LEFT JOIN LATERAL jsonb_array_elements(m.regex->'defn') WITH ORDINALITY e(v, rn) ON true
        LEFT JOIN LATERAL regexp_matches(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text,COALESCE(e.v ->> 'flag','')) WITH ORDINALITY mt(mt, rn) ON
            m.regex->>'function' = 'extract'
        LEFT JOIN LATERAL regexp_replace(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text, e.v ->> 'replace'::text,e.v ->> 'flag') WITH ORDINALITY rp(rp, rn) ON
            m.regex->>'function' = 'replace'
    WHERE
        --t.allj IS NULL
        t.srce = _srce
        --rec @> '{"Transaction":"ACH Credits","Transaction":"ACH Debits"}'
        --rec @> '{"Description":"CHECK 93013270 086129935"}'::jsonb
    ORDER BY 
        t.id DESC,
        m.target,
        e.rn,
        COALESCE(mt.rn,rp.rn,1)
    )

    --SELECT count(*) FROM rx LIMIT 100


    , agg_to_target_items AS (
    SELECT 
        srce
        ,id
        ,target
        ,seq
        ,map_intention
        ,regex_function
        ,target_item_number
        ,result_key_name
        ,target_json_path
        ,CASE WHEN map_key IS NULL 
            THEN    
                NULL 
            ELSE 
                jsonb_build_object(
                    map_key,
                    CASE WHEN max(result_number) = 1
                        THEN
                            jsonb_agg(map_val ORDER BY result_number) -> 0
                        ELSE
                            jsonb_agg(map_val ORDER BY result_number)
                    END
                ) 
        END map_val
        ,CASE WHEN retain_key IS NULL 
            THEN 
                NULL 
            ELSE 
                jsonb_build_object(
                    retain_key,
                    CASE WHEN max(result_number) = 1
                        THEN
                            jsonb_agg(retain_val ORDER BY result_number) -> 0
                        ELSE
                            jsonb_agg(retain_val ORDER BY result_number)
                    END
                ) 
        END retain_val
    FROM 
        rx
    GROUP BY
        srce
        ,id
        ,target
        ,seq
        ,map_intention
        ,regex_function
        ,target_item_number
        ,result_key_name
        ,target_json_path
        ,map_key
        ,retain_key
    )

    --SELECT * FROM agg_to_target_items LIMIT 100


    , agg_to_target AS (
    SELECT
        srce
        ,id
        ,target
        ,seq
        ,map_intention
        ,tps.jsonb_concat_obj(COALESCE(map_val,'{}'::JSONB)) map_val
        ,jsonb_strip_nulls(tps.jsonb_concat_obj(COALESCE(retain_val,'{}'::JSONB))) retain_val
    FROM
        agg_to_target_items
    GROUP BY
        srce
        ,id
        ,target
        ,seq
        ,map_intention
    ORDER BY
        id
    )


    --SELECT * FROM agg_to_target


    , link_map AS (
    SELECT
        a.srce
        ,a.id
        ,a.target
        ,a.seq
        ,a.map_intention
        ,a.map_val
        ,a.retain_val retain_value
        ,v.map
    FROM
        agg_to_target a
        LEFT OUTER JOIN tps.map_rv v ON
            v.srce = a.srce AND
            v.target = a.target AND
            v.retval = a.map_val
    )

    --SELECT * FROM link_map

    , agg_to_id AS (
    SELECT
        srce
        ,id
        ,tps.jsonb_concat_obj(COALESCE(retain_value,'{}'::jsonb) ORDER BY seq DESC) retain_val
        ,tps.jsonb_concat_obj(COALESCE(map,'{}'::jsonb)) map
    FROM
        link_map
    GROUP BY
        srce
        ,id
    )

    --SELECT agg_to_id.srce, agg_to_id.id, jsonb_pretty(agg_to_id.retain_val) , jsonb_pretty(agg_to_id.map) FROM agg_to_id ORDER BY id desc LIMIT 100



    UPDATE
        tps.trans t
    SET
        map = o.map,
        parse = o.retain_val,
        allj = t.rec||o.map||o.retain_val
    FROM
        agg_to_id o
    WHERE
        o.id = t.id;

    _message:= jsonb_build_object('status','complete');
    RETURN _message;

EXCEPTION WHEN OTHERS THEN

    GET STACKED DIAGNOSTICS 
            _MESSAGE_TEXT = MESSAGE_TEXT,
            _PG_EXCEPTION_DETAIL = PG_EXCEPTION_DETAIL,
            _PG_EXCEPTION_HINT = PG_EXCEPTION_HINT;
    _message:= 
        ($$
            {
                "status":"fail",
                "message":"error setting map value"
            }
        $$::jsonb)
        ||jsonb_build_object('message_text',_MESSAGE_TEXT)
        ||jsonb_build_object('pg_exception_detail',_PG_EXCEPTION_DETAIL);

    RETURN _message;
END;
$f$
language plpgsql;

---------------------set map values from json array of json objects-----------------------------------------------------


DROP FUNCTION IF EXISTS tps.map_rv_set;
CREATE OR REPLACE FUNCTION tps.map_rv_set(_defn jsonb) RETURNS jsonb
AS
$f$
DECLARE
    _message jsonb;
    _MESSAGE_TEXT text;
    _PG_EXCEPTION_DETAIL text;
    _PG_EXCEPTION_HINT text;
BEGIN
    INSERT INTO
        tps.map_rv (srce, target, retval, map, hist)
    SELECT 
        r.source
        ,r.map
        ,r.ret_val
        ,r.mapped
        ,jsonb_build_object(
                'hist_defn',mapped
                ,'effective',jsonb_build_array(CURRENT_TIMESTAMP,null::timestamptz)
            ) || '[]'::jsonb
    FROM
        JSONB_ARRAY_ELEMENTS(_defn) WITH ORDINALITY ae(r,s)
        JOIN LATERAL jsonb_to_record(ae.r) r(source TEXT,map TEXT, ret_val jsonb, mapped jsonb) ON TRUE
    ON CONFLICT ON CONSTRAINT map_rv_pk DO UPDATE
        SET
            map = excluded.map
            ,hist = 
                --the new definition going to position -0-
                jsonb_build_object(
                    'hist_defn',excluded.map
                    ,'effective',jsonb_build_array(CURRENT_TIMESTAMP,null::timestamptz)
                ) 
                --the previous definition, set upper bound of effective range which was previously null
                || jsonb_set(
                    map_rv.hist
                    ,'{0,effective,1}'::text[]
                    ,to_jsonb(CURRENT_TIMESTAMP)
                );

    -------return message--------------------------------------------------------------------------------------------------
    _message:= jsonb_build_object('status','complete');
    RETURN _message;

EXCEPTION WHEN OTHERS THEN

    GET STACKED DIAGNOSTICS 
            _MESSAGE_TEXT = MESSAGE_TEXT,
            _PG_EXCEPTION_DETAIL = PG_EXCEPTION_DETAIL,
            _PG_EXCEPTION_HINT = PG_EXCEPTION_HINT;
    _message:= 
        ($$
            {
                "status":"fail",
                "message":"error setting map value"
            }
        $$::jsonb)
        ||jsonb_build_object('message_text',_MESSAGE_TEXT)
        ||jsonb_build_object('pg_exception_detail',_PG_EXCEPTION_DETAIL);

        RETURN _message;
END;
$f$
LANGUAGE plpgsql;

------------------------------test regex with only unique results--------------------------------------------------------------

DROP FUNCTION IF EXISTS tps.test_regex(jsonb);
CREATE FUNCTION tps.test_regex(_defn jsonb) RETURNS jsonb
LANGUAGE plpgsql
AS
$f$
DECLARE
    _rslt jsonb;
BEGIN

    WITH

    --------------------apply regex operations to transactions---------------------------------------------------------------------------------

    rx AS (
    SELECT 
        t.srce,
        t.id,
        t.rec,
        m.target,
        m.seq,
        regex->>'function' regex_function,
        e.v ->> 'field' result_key_name,
        e.v ->> 'key' target_json_path,
        e.v ->> 'flag' regex_options_flag,
        e.v->>'map' map_intention,
        e.v->>'retain' retain_result,
        e.v->>'regex' regex_expression,
        e.rn target_item_number,
        COALESCE(mt.rn,rp.rn,1) result_number,
        mt.mt rx_match,
        rp.rp rx_replace,
        --------------------------json key name assigned to return value-----------------------------------------------------------------------
        CASE e.v->>'map'
            WHEN 'y' THEN
                e.v->>'field'
            ELSE
                null
        END map_key,
        --------------------------json value resulting from regular expression-----------------------------------------------------------------
        CASE e.v->>'map'
            WHEN 'y' THEN
                CASE regex->>'function'
                    WHEN 'extract' THEN
                        CASE WHEN array_upper(mt.mt,1)=1 
                            THEN to_json(mt.mt[1])
                            ELSE array_to_json(mt.mt)
                        END::jsonb
                    WHEN 'replace' THEN
                        to_jsonb(rp.rp)
                    ELSE
                        '{}'::jsonb
                END
            ELSE
                NULL
        END map_val,
        --------------------------flag for if retruned regex result is stored as a new part of the final json output---------------------------
        CASE e.v->>'retain'
            WHEN 'y' THEN
                e.v->>'field'
            ELSE
                NULL
        END retain_key,
        --------------------------push regex result into json object---------------------------------------------------------------------------
        CASE e.v->>'retain'
            WHEN 'y' THEN
                CASE regex->>'function'
                    WHEN 'extract' THEN
                        CASE WHEN array_upper(mt.mt,1)=1 
                            THEN to_json(trim(mt.mt[1]))
                            ELSE array_to_json(mt.mt)
                        END::jsonb
                    WHEN 'replace' THEN
                        to_jsonb(rtrim(rp.rp))
                    ELSE
                        '{}'::jsonb
                END
            ELSE
                NULL
        END retain_val
    FROM 
        --------------------------start with all regex maps------------------------------------------------------------------------------------
        (SELECT _defn->>'srce' srce, _defn->>'name' target, _defn->'regex' regex, (_defn->>'sequence')::numeric seq) m
        --------------------------isolate matching basis to limit map to only look at certain json---------------------------------------------
        JOIN LATERAL jsonb_array_elements(m.regex->'where') w(v) ON TRUE
        --------------------------break out array of regluar expressions in the map------------------------------------------------------------
        JOIN LATERAL jsonb_array_elements(m.regex->'defn') WITH ORDINALITY e(v, rn) ON true
        --------------------------join to main transaction table but only certain key/values are included--------------------------------------
        INNER JOIN tps.trans t ON 
            t.srce = m.srce AND
            t.rec @> w.v
        --------------------------each regex references a path to the target value, extract the target from the reference and do regex---------
        LEFT JOIN LATERAL regexp_matches(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text,COALESCE(e.v ->> 'flag','')) WITH ORDINALITY mt(mt, rn) ON
            m.regex->>'function' = 'extract'
        --------------------------same as above but for a replacement type function------------------------------------------------------------
        LEFT JOIN LATERAL regexp_replace(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text, e.v ->> 'replace'::text,e.v ->> 'flag') WITH ORDINALITY rp(rp, rn) ON
            m.regex->>'function' = 'replace'
    )

    --SELECT * FROM rx LIMIT 100


    , agg_to_target_items AS (
    SELECT 
        srce
        ,id
        ,target
        ,seq
        ,map_intention
        ,regex_function
        ,target_item_number
        ,result_key_name
        ,target_json_path
        ,CASE WHEN map_key IS NULL 
            THEN    
                NULL 
            ELSE 
                jsonb_build_object(
                    map_key,
                    CASE WHEN max(result_number) = 1
                        THEN
                            jsonb_agg(map_val ORDER BY result_number) -> 0
                        ELSE
                            jsonb_agg(map_val ORDER BY result_number)
                    END
                ) 
        END map_val
        ,CASE WHEN retain_key IS NULL 
            THEN 
                NULL 
            ELSE 
                jsonb_build_object(
                    retain_key,
                    CASE WHEN max(result_number) = 1
                        THEN
                            jsonb_agg(retain_val ORDER BY result_number) -> 0
                        ELSE
                            jsonb_agg(retain_val ORDER BY result_number)
                    END
                ) 
        END retain_val
    FROM 
        rx
    GROUP BY
        srce
        ,id
        ,target
        ,seq
        ,map_intention
        ,regex_function
        ,target_item_number
        ,result_key_name
        ,target_json_path
        ,map_key
        ,retain_key
    )

    --SELECT * FROM agg_to_target_items LIMIT 100


    , agg_to_target AS (
    SELECT
        srce
        ,id
        ,target
        ,seq
        ,map_intention
        ,tps.jsonb_concat_obj(COALESCE(map_val,'{}'::JSONB)) map_val
        ,jsonb_strip_nulls(tps.jsonb_concat_obj(COALESCE(retain_val,'{}'::JSONB))) retain_val
    FROM
        agg_to_target_items
    GROUP BY
        srce
        ,id
        ,target
        ,seq
        ,map_intention
    )


    , agg_to_ret AS (
    SELECT
        srce
        ,target
        ,seq
        ,map_intention
        ,map_val
        ,retain_val
        ,count(*) "count"
    FROM 
        agg_to_target
    GROUP BY
        srce
        ,target
        ,seq
        ,map_intention
        ,map_val
        ,retain_val
    )
    ,agg_to_id AS (
    SELECT
        l.srce
        ,l.target
        ,l.map_val
        ,l."count"
    FROM
        agg_to_ret l
    ORDER BY
        l.srce
        ,l.target
        ,l."count" desc
    )
    SELECT
        jsonb_agg(row_to_json(agg_to_id)::jsonb)
    INTO
        _rslt
    FROM
        agg_to_id;

    RETURN _rslt;
END;
$f$;

------------------------------test regex with all original records--------------------------------------------------------------

DROP FUNCTION IF EXISTS tps.test_regex_rec(jsonb);
CREATE FUNCTION tps.test_regex_recs(_defn jsonb) RETURNS jsonb
LANGUAGE plpgsql
AS
$f$
DECLARE
    _rslt jsonb;
BEGIN

WITH

--------------------apply regex operations to transactions---------------------------------------------------------------------------------

rx AS (
SELECT 
    t.srce,
    t.id,
    t.rec,
    m.target,
    m.seq,
    regex->>'function' regex_function,
    e.v ->> 'field' result_key_name,
    e.v ->> 'key' target_json_path,
    e.v ->> 'flag' regex_options_flag,
    e.v->>'map' map_intention,
    e.v->>'retain' retain_result,
    e.v->>'regex' regex_expression,
    e.rn target_item_number,
    COALESCE(mt.rn,rp.rn,1) result_number,
    mt.mt rx_match,
    rp.rp rx_replace,
    --------------------------json key name assigned to return value-----------------------------------------------------------------------
    CASE e.v->>'map'
        WHEN 'y' THEN
            e.v->>'field'
        ELSE
            null
    END map_key,
    --------------------------json value resulting from regular expression-----------------------------------------------------------------
    CASE e.v->>'map'
        WHEN 'y' THEN
            CASE regex->>'function'
                WHEN 'extract' THEN
                    CASE WHEN array_upper(mt.mt,1)=1 
                        THEN to_json(mt.mt[1])
                        ELSE array_to_json(mt.mt)
                    END::jsonb
                WHEN 'replace' THEN
                    to_jsonb(rp.rp)
                ELSE
                    '{}'::jsonb
            END
        ELSE
            NULL
    END map_val,
    --------------------------flag for if retruned regex result is stored as a new part of the final json output---------------------------
    CASE e.v->>'retain'
        WHEN 'y' THEN
            e.v->>'field'
        ELSE
            NULL
    END retain_key,
    --------------------------push regex result into json object---------------------------------------------------------------------------
    CASE e.v->>'retain'
        WHEN 'y' THEN
            CASE regex->>'function'
                WHEN 'extract' THEN
                    CASE WHEN array_upper(mt.mt,1)=1 
                        THEN to_json(trim(mt.mt[1]))
                        ELSE array_to_json(mt.mt)
                    END::jsonb
                WHEN 'replace' THEN
                    to_jsonb(rtrim(rp.rp))
                ELSE
                    '{}'::jsonb
            END
        ELSE
            NULL
    END retain_val
FROM 
    --------------------------start with all regex maps------------------------------------------------------------------------------------
    (SELECT _defn->>'srce' srce, _defn->>'name' target, _defn->'regex' regex, (_defn->>'sequence')::numeric seq) m
    --------------------------isolate matching basis to limit map to only look at certain json---------------------------------------------
    JOIN LATERAL jsonb_array_elements(m.regex->'where') w(v) ON TRUE
    --------------------------break out array of regluar expressions in the map------------------------------------------------------------
    JOIN LATERAL jsonb_array_elements(m.regex->'defn') WITH ORDINALITY e(v, rn) ON true
    --------------------------join to main transaction table but only certain key/values are included--------------------------------------
    INNER JOIN tps.trans t ON 
        t.srce = m.srce AND
        t.rec @> w.v
    --------------------------each regex references a path to the target value, extract the target from the reference and do regex---------
    LEFT JOIN LATERAL regexp_matches(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text,COALESCE(e.v ->> 'flag','')) WITH ORDINALITY mt(mt, rn) ON
        m.regex->>'function' = 'extract'
    --------------------------same as above but for a replacement type function------------------------------------------------------------
    LEFT JOIN LATERAL regexp_replace(t.rec #>> ((e.v ->> 'key')::text[]), e.v ->> 'regex'::text, e.v ->> 'replace'::text,e.v ->> 'flag') WITH ORDINALITY rp(rp, rn) ON
        m.regex->>'function' = 'replace'
)

--SELECT * FROM rx LIMIT 100


, agg_to_target_items AS (
SELECT 
    srce
    ,id
    ,rec
    ,target
    ,seq
    ,map_intention
    ,regex_function
    ,target_item_number
    ,result_key_name
    ,target_json_path
    ,CASE WHEN map_key IS NULL 
        THEN    
            NULL 
        ELSE 
            jsonb_build_object(
                map_key,
                CASE WHEN max(result_number) = 1
                    THEN
                        jsonb_agg(map_val ORDER BY result_number) -> 0
                    ELSE
                        jsonb_agg(map_val ORDER BY result_number)
                END
            ) 
    END map_val
    ,CASE WHEN retain_key IS NULL 
        THEN 
            NULL 
        ELSE 
            jsonb_build_object(
                retain_key,
                CASE WHEN max(result_number) = 1
                    THEN
                            jsonb_agg(retain_val ORDER BY result_number) -> 0
                    ELSE
                        jsonb_agg(retain_val ORDER BY result_number)
                END
            ) 
    END retain_val
FROM 
    rx
GROUP BY
    srce
    ,id
    ,rec
    ,target
    ,seq
    ,map_intention
    ,regex_function
    ,target_item_number
    ,result_key_name
    ,target_json_path
    ,map_key
    ,retain_key
)

--SELECT * FROM agg_to_target_items LIMIT 100


, agg_to_target AS (
SELECT
    srce
    ,id
    ,rec
    ,target
    ,seq
    ,map_intention
    ,tps.jsonb_concat_obj(COALESCE(map_val,'{}'::JSONB)) map_val
    ,jsonb_strip_nulls(tps.jsonb_concat_obj(COALESCE(retain_val,'{}'::JSONB))) retain_val
FROM
    agg_to_target_items
GROUP BY
    srce
    ,id
    ,rec
    ,target
    ,seq
    ,map_intention
)
, agg_to_ret AS (
SELECT
	srce
	,target
	,seq
	,map_intention
	,map_val
	,retain_val
	,count(*) "count"
    ,jsonb_agg(rec) rec
FROM 
	agg_to_target
GROUP BY
	srce
	,target
	,seq
	,map_intention
	,map_val
	,retain_val
)
SELECT
    jsonb_agg(row_to_json(agg_to_ret)::jsonb)
INTO
    _rslt
FROM
    agg_to_ret;
RETURN _rslt;
END;
$f$;