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"""Utils to provide dashboards for tests"""

import json
from typing import Any, Dict, List, Optional

from pandas import DataFrame

from superset import ConnectorRegistry, db
from superset.connectors.sqla.models import SqlaTable
from superset.models.core import Database
from superset.models.dashboard import Dashboard
from superset.models.slice import Slice
from superset.utils.core import get_example_default_schema


def create_table_for_dashboard(
    df: DataFrame,
    table_name: str,
    database: Database,
    dtype: Dict[str, Any],
    table_description: str = "",
    fetch_values_predicate: Optional[str] = None,
    schema: Optional[str] = None,
) -> SqlaTable:
    schema = schema or get_example_default_schema()

    df.to_sql(
        table_name,
        database.get_sqla_engine(),
        if_exists="replace",
        chunksize=500,
        dtype=dtype,
        index=False,
        method="multi",
        schema=schema,
    )

    table_source = ConnectorRegistry.sources["table"]
    table = (
        db.session.query(table_source)
        .filter_by(database_id=database.id, schema=schema, table_name=table_name)
        .one_or_none()
    )
    if not table:
        table = table_source(schema=schema, table_name=table_name)
    if fetch_values_predicate:
        table.fetch_values_predicate = fetch_values_predicate
    table.database = database
    table.description = table_description
    db.session.merge(table)
    db.session.commit()

    return table


def create_slice(
    title: str, viz_type: str, table: SqlaTable, slices_dict: Dict[str, str]
) -> Slice:
    return Slice(
        slice_name=title,
        viz_type=viz_type,
        datasource_type="table",
        datasource_id=table.id,
        params=json.dumps(slices_dict, indent=4, sort_keys=True),
    )


def create_dashboard(
    slug: str, title: str, position: str, slices: List[Slice]
) -> Dashboard:
    dash = db.session.query(Dashboard).filter_by(slug=slug).one_or_none()

    if not dash:
        dash = Dashboard()
    dash.dashboard_title = title
    if position is not None:
        js = position
        pos = json.loads(js)
        dash.position_json = json.dumps(pos, indent=4)
    dash.slug = slug
    if slices is not None:
        dash.slices = slices
    db.session.merge(dash)
    db.session.commit()

    return dash