/// burn vanjs into codebase
{let e,t,r,o,n,s,l,i,f,h,w,a,u,d,c,_,S,g,y,b,m,v,j,x,O;l=Object.getPrototypeOf,f={},h=l(i={isConnected:1}),w=l(l),a=(e,t,r,o)=>(e??(o?setTimeout(r,o):queueMicrotask(r),new Set)).add(t),u=(e,t,o)=>{let n=r;r=t;try{return e(o)}catch(e){return console.error(e),o}finally{r=n}},d=e=>e.filter(e=>e.t?.isConnected),c=e=>n=a(n,e,()=>{for(let e of n)e.o=d(e.o),e.l=d(e.l);n=s},1e3),_={get val(){return r?.i?.add(this),this.rawVal},get oldVal(){return r?.i?.add(this),this.h},set val(o){r?.u?.add(this),o!==this.rawVal&&(this.rawVal=o,this.o.length+this.l.length?(t?.add(this),e=a(e,this,x)):this.h=o)}},S=e=>({__proto__:_,rawVal:e,h:e,o:[],l:[]}),g=(e,t)=>{let r={i:new Set,u:new Set},n={f:e},s=o;o=[];let l=u(e,r,t);l=(l??document).nodeType?l:new Text(l);for(let e of r.i)r.u.has(e)||(c(e),e.o.push(n));for(let e of o)e.t=l;return o=s,n.t=l},y=(e,t=S(),r)=>{let n={i:new Set,u:new Set},s={f:e,s:t};s.t=r??o?.push(s)??i,t.val=u(e,n,t.rawVal);for(let e of n.i)n.u.has(e)||(c(e),e.l.push(s));return t},b=(e,...t)=>{for(let r of t.flat(1/0)){let t=l(r??0),o=t===_?g(()=>r.val):t===w?g(r):r;o!=s&&e.append(o)}return e},m=(e,t,...r)=>{let[{is:o,...n},...i]=l(r[0]??0)===h?r:[{},...r],a=e?document.createElementNS(e,t,{is:o}):document.createElement(t,{is:o});for(let[e,r]of Object.entries(n)){let o=t=>t?Object.getOwnPropertyDescriptor(t,e)??o(l(t)):s,n=t+","+e,i=f[n]??=o(l(a))?.set??0,h=e.startsWith("on")?(t,r)=>{let o=e.slice(2);a.removeEventListener(o,r),a.addEventListener(o,t)}:i?i.bind(a):a.setAttribute.bind(a,e),u=l(r??0);e.startsWith("on")||u===w&&(r=y(r),u=_),u===_?g(()=>(h(r.val,r.h),a)):h(r)}return b(a,i)},v=e=>({get:(t,r)=>m.bind(s,e,r)}),j=(e,t)=>t?t!==e&&e.replaceWith(t):e.remove(),x=()=>{let r=0,o=[...e].filter(e=>e.rawVal!==e.h);do{t=new Set;for(let e of new Set(o.flatMap(e=>e.l=d(e.l))))y(e.f,e.s,e.t),e.t=s}while(++r<100&&(o=[...t]).length);let n=[...e].filter(e=>e.rawVal!==e.h);e=s;for(let e of new Set(n.flatMap(e=>e.o=d(e.o))))j(e.t,g(e.f,e.t)),e.t=s;for(let e of n)e.h=e.rawVal},O={tags:new Proxy(e=>new Proxy(m,v(e)),v()),hydrate:(e,t)=>j(e,g(t,e)),add:b,state:S,derive:y},window.van=O;}
///

const $ = van.tags;
const writeKey = "vault";

const password = van.state("");

const encrypt =(secret)=>
{
    const serialized = JSON.stringify(vault.val);
    
    // todo add actual encryption here using secret
        const encrypted = serialized+"|"+secret;
    //

    localStorage.setItem(writeKey, encrypted); 
    vaultSerialized.val = encrypted;
};
const decrypt =(secret)=>
{
    try
    {
        const encrypted = localStorage.getItem(writeKey)||"";
        vaultSerialized.val = encrypted;
        
        // todo add actual decryption here using secret
            const [decrypted, actual] = encrypted.split("|");
            if(actual !== secret){return false;}
        //

        vault.val = JSON.parse(decrypted);
        return true;
    }
    catch(e)
    {
        console.log("decrypt error", e);
        return false;
    }
};

/** @typedef {[domain:string, username:string, password:string, codegen:string, timestamp:number, custom_kvp:Record<string, string>]} CredSet */
const vault = van.state(/**@type{CredSet[]}*/([]));
const vaultSerialized = van.state("");

let attempts = 0;
const preexisting = van.state((localStorage.getItem(writeKey)||"").length>2 ? true : false);
const accessError = van.state(false);


van.derive(()=>{
    if(preexisting.val)
    {
        const success = decrypt(password.val);
        if(success)
        {
            preexisting.val = false;
            accessError.val = false;
        }
        else
        {
            if(attempts > 0)
            {
                accessError.val = true;
            }
            return;
        }
    }
    encrypt(password.val);
    console.log("password change");
});

/** @type {(credSet:CredSet)=>void} */
const vaultAdd =(credSet)=>{
    const clone = [...vault.rawVal];
    let i;
    for(i=0; i<clone.length; i++)
    {
        if(credSet[0] < clone[i][0])
        {
            break;
        }
    }
    clone.splice(i, 0, credSet);
    vault.val = clone;
};

const Components = {
    Form()
    {
        /** @type {(label:string, control:HTMLInputElement)=>HTMLFieldSetElement} */
        const block =(label, control)=>
        {
            control.id = label;
            return $.fieldset(
                $.label({for:label}, label),
                control
            )
        };

        const inputSite = $.input();
        const inputUser = $.input();
        const inputPass = $.input();
        const inputCode = $.input();
        return $.form(

            {
                onsubmit(e){
                    e.preventDefault();
                    vaultAdd([inputSite.value, inputUser.value, inputPass.value, inputCode.value, new Date().getTime(), {}])
                }
            },

            block("Site", inputSite),
            block("User", inputUser),
            block("Pass", inputPass),
            block("Code", inputCode),

            $.button("Add")
        )
    },

    Root()
    {
        const input = $.input({id:"passwordField", value:password.val});
        return $.div(
            $.label({for:input.id}, "Password"),
            ()=>input,
            $.strong(password.val),
            $.button({onclick(){
                attempts++;
                password.val = input.value;
            }}, "Set Password"),
            $.hr(),
            $.em(preexisting.val),
            accessError.val ? $.strong("Password did not decrypt existing session.") : null,
            preexisting.val ? $.div(
                $.p("Existing session found. Unlock it with the right password, or destroy data."),
                $.button({onclick(){attempts = 0; accessError.val = false; preexisting.val = false;}}, "Destroy Data")
            ) : null,
            (!preexisting.val && password.val) ? Components.Vault() : null,
            $.hr(),
            $.pre(vaultSerialized.val)
        );

    },

    Vault()
    {
        return $.div(
            $.h2("Vault"),
            Components.Form,
            vault.val.map((cred)=>{
                return $.details(
                    $.summary(cred[0]),
                    $.p(
                        $.strong("User Name:"),
                        cred[1]
                    )
                )
            })
        );
    }
}

van.add(document.body, Components.Root);