/** @import * as TYPES from "./types.ts" */

/** @type {TYPES.GraphBuilder} */
export function Room({user, role, part, desk, pass})
{

// mutate users
    /** @type {Record<string, TYPES.User>} */
    //@ts-ignore
    const UserList = user;
    for(let userId in user)
    {
        const name = user[userId];
        UserList[userId] = {name, desk:new Set()};
    }

// mutate roles
    /** @type {Record<string, TYPES.Role>} */
    //@ts-ignore
    const RoleList = role;
    for(let roleId in role)
    {
        const [name, ...userIds] = role[roleId];
        RoleList[roleId] = {name, user:userIds.map(uId=>UserList[/**@type{string}*/(uId)])};
    }

// mutate parts
    /** @type {Record<string, TYPES.Part>} */
    //@ts-ignore
    const PartList = part;
    for(let partId in part)
    {
        const name = part[partId];
        PartList[partId] = /** @type {TYPES.Part} */({name, need:[], make:[], pass:new Map()});
    }

// mutate desks
    /** @type {Record<string, TYPES.Desk>} */
    //@ts-ignore
    const DeskList = desk;
    for(let deskId in desk)
    {
        const [name, roleIDs, mode, needObj, ...makePartIDs] = desk[deskId];
        /** @type {TYPES.Part[]}*/ const need =[];
        /** @type {number[]}*/ const time =[];

        /** @type {TYPES.Desk} */
        const deskObj = {
            name,
            mode,
            need,
            time,
            make:[],
            role:[],
            pass:new Map()
        };

        for(const partId in needObj)
        {   
            const part = PartList[partId];
            need.push(part);
            part.need.push(deskObj);
            time.push(needObj[partId]);
        }

        deskObj.role = roleIDs.map(roleId=>
        {
            const role = RoleList[/**@type{string}*/(roleId)];
            role.user.forEach(u =>u.desk.add(deskObj));
            return role;
        }); 

        deskObj.make = makePartIDs.map( partId=>
        {
            const part = PartList[/**@type{string}*/(partId)];
            part.make.push(deskObj);
            return part;
        } )

        DeskList[deskId] = deskObj;
    }

// Apply passes
    /** @type {Record<string, TYPES.Pass>} */
    //@ts-ignore
    const PassList = pass;
    for(let passID in pass)
    {
        /** @type {TYPES.Pass} */
        const passObj = {
            name: pass[passID][0],
            path:passID,
            async load(){

                // make room for this pass to each part and desk
                Object.values(PartList).forEach((partObj)=>
                {
                    partObj.pass.set(passObj, {time:0, work:[], make(user, data)
                    {
                        this.time = Date.now();
                        this.work.push(/** @type {TYPES.Work}*/([this.time, data, user]));
                        partObj.make.forEach((arg)=>{Scan(arg, passObj)});
                        partObj.need.forEach((arg)=>{Scan(arg, passObj)});
                    }});
                });
                Object.values(DeskList).forEach((deskObj)=>
                {
                    deskObj.pass.set(passObj, {need:[], make:[]});
                });
                

                // actually load the pass
                const userData = Object.entries(UserList);
                for(let i=0; i<userData.length; i++)
                {
                    const [userID, userObject] = userData[i];
                    try
                    {
                        const resp = await fetch(`./room/${context.Path}/${passID}/${userID}.json`);
                        /** @type {TYPES.UserPassFile} */
                        const json = await resp.json();
                        
                        Object.entries(json).forEach(([partID, payload])=>{

                            let latest = 0;
                            payload.forEach((condensedWork)=>{
                                if(condensedWork[0] > latest)
                                {
                                    latest = condensedWork[0];
                                }
                                condensedWork[2] = userObject;
                            });

                            const passCheck = PartList[partID].pass.get(this);
                            if(passCheck)
                            {
                                if(latest > passCheck.time)
                                {
                                    passCheck.time = latest;
                                }
                                passCheck.work = /** @type {TYPES.Work[]}*/(payload);
                            }

                        })
                    }
                    catch(e)
                    {
                        console.warn(`No data for user ${userID} on pass ${passID} yet.`)
                        continue;
                    }

                }
                console.log("load complete", PartList);

                // update the graph
                Object.values(DeskList).forEach((deskObj)=>Scan(deskObj, passObj));

                this.live = true;
            },
            dump(){
                Object.values(PartList).forEach((partObj)=>partObj.pass.delete(passObj));
                Object.values(DeskList).forEach((deskObj)=>deskObj.pass.delete(passObj));
                this.live = false;
            },
            live:false
        };

        PassList[passID] = passObj;
    }

    const context = {
        Path:"",
        Desk:DeskList,
        Part:PartList,
        User:UserList,
        Role:RoleList,
        Pass:PassList
    }

    return context;
}

/** @type {TYPES.MassBuilder} */
export default function MassBuild(params)
{
    return ()=>{
        Object.entries(params).forEach( ([roomFolderName, roomData])=>
        {
            roomData.Path = roomFolderName;
        });
        return params;
    }
}

/** @type {TYPES.Scanner} */
const Scan =(desk, pass)=>
{
    const dirtyNeed = [];
    const dirtyMake = [];

    let makeMin = Infinity;
    let needMax = -Infinity;

    // update needMax
    for(let i=0; i<desk.need.length; i++)
    {
        const part = desk.need[i];
        const partPassTime = part.pass.get(pass)?.time || 0;
        if(partPassTime > needMax) needMax = partPassTime;
    }

    // update makeMin AND dirty check makes
    for(let i=0; i<desk.make.length; i++)
    {
        const part = desk.make[i];
        const partPassTime = part.pass.get(pass)?.time || 0;
        if(partPassTime < makeMin) makeMin = partPassTime;
        if(partPassTime < needMax)
        {
            dirtyMake.push(i);
        } 
    }

    // dirty check needs
    for(let i=0; i<desk.need.length; i++)
    {
        const part = desk.need[i];
        const partPassTime = part.pass.get(pass)?.time || 0;
        if(partPassTime > makeMin)
        {
            dirtyNeed.push(i);
        }
    }
    
    desk.pass.set(pass, {need:dirtyNeed, make:dirtyMake})
};