"use strict";

const { Client } = require("../Client.js");
const { on, emit, register } = require("../WebSocket");

on('disconnect', (xclient) => {
    const { intersection, pairs } = xclient.getSucureClients();
    
    for (const [clientid, client] of intersection) {
        client?.send([{ id: xclient.id }, "peer/disconnect"]);
    }

    for (const [id, peer] of pairs) {
        peer?.pairs.delete(xclient.id);
        xclient.pairs.delete(id);
    }
});

register('auth/pair-system', (client, msg) => {
    if (msg.value == 'everybody') {
        client.requiredPair = true;
        return { status: 'success' };
    }
    if (msg.value == 'disable') {
        client.requiredPair = false;
        return { status: 'success' };
    }
    return { status: 'fail', message: 'INVALID_VALUE' };
});

register('my/socketid', (client, msg) => {
    return client.id;
});

register('auth/public', (client, msg) => {
    client.requiredPair = false;
    return { value: 'success', mode: 'public' };
});

register('auth/private', (client, msg) => {
    client.requiredPair = true;
    return { value: 'success', mode: 'private' };
});

register('request/pair', (client, msg) => {
    const { to } = msg;
    
    if (!Client.clients.has(to)) {
        return { status: 'fail', message: 'CLIENT_NOT_FOUND' };
    }
    
    const pairclient = Client.clients.get(to);
    
    if (pairclient.pairs.has(client.id)) {
        return { status: 'success', message: 'ALREADY-PAIRED' };
    }
    
    if (client.pairs.has(to)) {
        return { status: 'fail', message: 'ALREADY-REQUESTED' };
    }
    
    client.peerRequest(pairclient);
    return { status: 'success', message: 'REQUESTED' };
});

register('accept/pair', (client, msg) => {
    const { to } = msg;
    
    if (!Client.clients.has(to)) {
        return { status: 'fail', message: 'CLIENT_NOT_FOUND' };
    }
    
    const pairclient = Client.clients.get(to);
    
    if (pairclient.pairs.has(client.id)) {
        return { status: 'success', message: 'ALREADY-PAIRED' };
    }
    
    if (!client.pairs.has(to)) {
        return { status: 'fail', message: 'NOT_REQUESTED_PAIR' };
    }
    
    client.acceptPeerRequest(pairclient);
    return { status: 'success' };
});

register('reject/pair', (client, msg) => {
    const { to } = msg;
    
    if (!Client.clients.has(to)) {
        return { status: 'fail', message: 'CLIENT_NOT_FOUND' };
    }
    
    const pairclient = Client.clients.get(to);
    
    if (pairclient.pairs.has(client.id)) {
        return { status: 'success', message: 'ALREADY-PAIRED' };
    }
    
    if (!client.pairs.has(to)) {
        return { status: 'fail', message: 'NOT_REQUESTED_PAIR' };
    }
    
    client.rejectPeerRequest(pairclient);
    return { status: 'success' };
});

register('end/pair', (client, msg) => {
    const { to } = msg;
    
    if (!Client.clients.has(to)) {
        return { status: 'fail', message: 'CLIENT_NOT_FOUND' };
    }
    
    const pairclient = Client.clients.get(to);
    
    if (!pairclient.pairs.has(client.id)) {
        return { status: 'success', message: 'NOT_PAIRED' };
    }
    
    client.rejectPeerRequest(pairclient);
    return { status: 'success' };
});

register('pair/list', (client, msg) => {
    return { type: 'pair/list', value: client.pairList() };
});

register('is/reachable', (client, msg) => {
    const { to } = msg;
    
    if (!Client.clients.has(to)) {
        return false;
    }
    
    const otherPeer = Client.clients.get(to);
    
    if (otherPeer.requiredPair && !otherPeer.pairs.has(to)) {
        return false;
    }
    
    return true;
});

register('auth/info', (client, msg) => {
    const { name, value } = msg;
    
    client.info.set(name, value);
    
    const clients = client.getSucureClients();
    
    for (const [, spair] of clients.pairs) {
        spair.send([{ from: client.id, name, value }, "pair/info"]);
    }
    
    for (const [, spair] of clients.roompairs) {
        spair.send([{ from: client.id, name, value }, "pair/info"]);
    }
    
    return { status: 'success' };
});

register('peer/info', (client, msg) => {
    const { peer } = msg;
    
    if (!client.isSecure(peer)) {
        return { status: "fail", message: "unaccessible user" };
    }
    
    const peerClient = Client.clients.get(peer);
    const info = {};
    peerClient.info.forEach((value, name) => { info[name] = value; });
    
    return { status: "success", info };
});