/** @import * as TYPES from "./graph/types.ts" */
import * as FSHandle from "./store-directory-handle.js";

const {Div, DOM} = Gale({
    Title:{
        padding:"2rem",
        background: "blue",
        color:"white"
    },
    Plain:{},
    PartGroup:{
        display: `flex`,
        flexWrap: `wrap`
    },
    Part:{
        border: `1px solid black`,
        borderRadius: `5px`,
        padding: `1rem`
    },
    BlockScreen:{
        position: "fixed",
        zIndex: "9999",
        top: "0",
        left: "0",
        width: "100%",
        height: "100%",
        background: "rgba(128, 128, 128, 0.5)"
    }
});

async function PickHandle()
{
    handle = await showDirectoryPicker();
    await FSHandle.setDirectoryHandle(handle);
    await LoadHandleFiles();
}
async function LoadHandleFiles()
{
    console.log("fetching room.js", handle);
    if(handle)
    {
        try
        {
            const module = await import("./graph/room.js"+"?bust="+Math.random());
            /** @type {Record<string, TYPES.GraphParts>} */
            const read = module.default();
            rooms.val = read;
        }
        catch(_e)
        {
            console.log("the handle exists, but the request failed. the service work must not be ready yet.")
            rooms.val = {};
        }
    }
    else
    {
        console.log("no fs handle has been set, cannot get room graph")
        rooms.val = {};
    }
}


/** @type {Van.State<Record<string, TYPES.GraphParts>>} */
const rooms = van.state({});
let handle = await FSHandle.getDirectoryHandle();
await LoadHandleFiles();

/** @type {(path:string[], part:string, time:number, data:string)=>void} */
async function WRITE(path, part, time, data)
{
    const fileHandle = await FSHandle.Dig(handle, path, true);
    if(fileHandle)
    {
        const file  = await fileHandle.getFile();
        const text = await file.text();
        let json = {};
        if(text)
        {
            json = JSON.parse(text);
        }
        let partProp = json[part];
        if(!partProp)
        {
            partProp = [];
            json[part] = partProp;
        }
        partProp.push([time, data]);

        const writeable = await fileHandle.createWritable();
        await writeable.write(JSON.stringify(json, null, 2));
        await writeable.close();
    }

}

/** @type {Van.State<TYPES.User|false>} */
const loggedIn = van.state(false);

const blocking = van.state(false);

/** @type {(room_id:string, graphParts:TYPES.GraphParts)=>HTMLElement} */
function Room(room_id, graphParts)
{
    const rerender = van.state(0);
    blocking.val;

    return Div.Plain(

        Div.Plain("Users:"),
        Div.PartGroup(
            Object.entries(graphParts.User).map(([user_id, user])=>{
                return ()=>{

                    //rerender.val;

                    return Div.Part(
                        DOM.div.Plain(user.name),
                        ()=>{
                            return DOM.button.Plain(
                                {onclick(){
                                    loggedIn.val = (loggedIn.val == user) ? false : user;
                                }},
                                loggedIn.val == user ? "this is me" : "impersonate"
                            )
                        },
                    )
                }
            })
        ),

        Div.Plain("Passes:"),
        Div.PartGroup(
            Object.entries(graphParts.Pass).map(([pass_id, pass])=>{
                return ()=>{
                    console.log("rerendering...", rerender.rawVal);

                    rerender.val;

                    return Div.Part(
                        DOM.div.Plain(pass.name),
                        ()=>{
                            return DOM.button.Plain(
                                {async onclick(){
                                    await pass[pass.live ? "dump" : "load"]();
                                    rerender.val++
                                }},
                                pass.live ? "Dump" : "Load"
                            )
                        },
                    )
                }
            })
        ),

        Div.Plain("Parts"),
        Div.PartGroup(
            Object.entries(graphParts.Part).map(([part_id, part])=>{

                return ()=>{

                    rerender.val;

                    const work = []
                    for(const [pass, data] of part.pass)
                    {

                        work.push(Div.Part(
                            DOM.h5(pass.name),
                            DOM.p(data.time),
                            data.work.map(([time, data, user])=>Div.Plain(
                                DOM.span(time),
                                " ",
                                DOM.strong(data),
                            )),
                            Div.Plain(
                                loggedIn.val ? DOM.button({onclick(){
                                    if(loggedIn.val)
                                    {
                                        blocking.val = true;
                                        data.make(loggedIn.val, "NEW").then(()=>{
                                            blocking.val = false;
                                            rerender.val++;
                                        });
                                    }
                                }}, "Add work!")
                                : null
                            )
                        ))
                    }

                    return Div.Part(
                        DOM.h3(part.name),
                        ...work,
                    );
                }

            }),
        ),

        Div.Plain("Desks"),
        Div.PartGroup(
            Object.entries(graphParts.Desk).map(([desk_id, desk])=>{

                return ()=>{

                    rerender.val;

                    /** @type {(part:TYPES.Part, index:number, pass:TYPES.Pass, dirty:number[])=>HTMLElement|null} */
                    const Iterator = (part, index, pass, dirty)=>{

                        const partPass = part.pass.get(pass);
                        if(partPass)
                        {
                            const time = partPass.time;
                            const latest = partPass.work.find(t=>t[0] == time);

                            return Div.Plain(
                                part.name,
                                DOM.p( dirty.includes(index) ? "Dirty" : "Good!" ),
                                Div.Part(
                                    time, " ", latest?.[1] || ""
                                )
                            );
                        }
                        return null;
                    }

                    const work = [];
                    for(const [pass, dirty] of desk.pass)
                    {
                        
                        work.push(Div.Part(
                            DOM.h5(pass.name),
                            Div.Part(
                                DOM.h4("Need:"),
                                desk.need.map((part, index)=>Iterator(part, index, pass, dirty.need))
                            ),
                            Div.Part(
                                DOM.h4("Make:"),
                                desk.make.map((part, index)=>Iterator(part, index, pass, dirty.make))
                            )
                        ))
                    }

                    return Div.Part(
                        DOM.h3(desk.name),
                        work
                    )
                }

            }),
        ),

        ()=>{
            return blocking.val ? Div.BlockScreen() : null
        }

    )
}

function App()
{
    return Div.Plain(
        DOM.button({onclick:PickHandle}, "Pick Directory"),
        Object.entries(rooms.val).map(([room_id, graphParts])=>
            Room(room_id, graphParts)
        )
    )
}

van.add(document.body, App);