import IpcEvents from "../src/utils/IpcEvents";
import * as DataStore from "../src/api/DataStore";

// Discord deletes this so need to store in variable
const { localStorage } = window;

// listeners for ipc.on
const listeners = {} as Record<string, Set<Function>>;

const handlers = {
    [IpcEvents.GET_REPO]: () => "https://github.com/Vendicated/Vencord", // shrug
    [IpcEvents.GET_SETTINGS_DIR]: () => "LocalStorage",

    [IpcEvents.GET_QUICK_CSS]: () => DataStore.get("VencordQuickCss").then(s => s ?? ""),
    [IpcEvents.SET_QUICK_CSS]: (css: string) => {
        DataStore.set("VencordQuickCss", css);
        listeners[IpcEvents.QUICK_CSS_UPDATE]?.forEach(l => l(null, css));
    },

    [IpcEvents.GET_SETTINGS]: () => localStorage.getItem("VencordSettings") || "{}",
    [IpcEvents.SET_SETTINGS]: (s: string) => localStorage.setItem("VencordSettings", s),

    [IpcEvents.GET_UPDATES]: () => ({ ok: true, value: [] }),

    [IpcEvents.OPEN_EXTERNAL]: (url: string) => open(url, "_blank"),
};

function onEvent(event: string, ...args: any[]) {
    const handler = handlers[event];
    if (!handler) throw new Error(`Event ${event} not implemented.`);
    return handler(...args);
}

// probably should make this less cursed at some point
window.VencordNative = {
    getVersions: () => ({}),
    ipc: {
        send: (event: string, ...args: any[]) => void onEvent(event, ...args),
        sendSync: onEvent,
        on(event: string, listener: () => {}) {
            (listeners[event] ??= new Set()).add(listener);
        },
        off(event: string, listener: () => {}) {
            return listeners[event]?.delete(listener);
        },
        invoke: (event: string, ...args: any[]) => Promise.resolve(onEvent(event, ...args))
    },
};