import WebSocket from 'ws';
import { generateSigningKey, sign } from '../dist/sys/crypto.js';
import { uts, wait } from '../dist/sys/tools.js';
import * as ws from "./ws/ws.js"

function conn(url) {
    const ws = new WebSocket(url);

    ws.on('close', function open() {
        wsOpen = false;
    });

    let wsOpen = true;

    var list = [];
    var c = 0;

    ws.on('message', function message(data) {
        data = data.toString();
        if (data == "error") return void console.log("Server error");
        var json = JSON.parse(data);
        for (let i = 0; i < list.length; i++) {
            const e = list[i];
            if (e[0] == json.id) {
                e[2]({ state: json.state, data: json.data });
                list.splice(i, 1);
                return;
            }
        }
    });

    this.close = function () {
        ws.close();
    }

    setInterval(() => {
        for (let i = 0; i < list.length; i++) {
            const e = list[i];
            if (e[1] + 5 < uts()) {
                e[2]("timeout");
                list.splice(i, 1);
            }
        }
    }, 1000);

    function req(act, data) {
        return new Promise((res, rej) => {
            if (!wsOpen) {
                console.error("WebSocket is closed");
                rej("WebSocket is closed");
                return;
            }
            var id = ++c;
            list.push([id, uts(), res, rej]);
            ws.send(JSON.stringify({
                id,
                act,
                data
            }));
        })
    }
    this.req = req;
};

function shallowEqual(object1, object2) {
    const keys1 = Object.keys(object1);
    const keys2 = Object.keys(object2);
    if (keys1.length < keys2.length) {
        return false;
    }
    for (let key of keys1) {
        if (object1[key] != object2[key]) {
            return false;
        }
    }
    return true;
}



export async function wsTester(url, kill) {
    async function test(conn, act, data, expState, expData) {
        console.log("Testing Act:", act, "with Data:", data);
        let resp = await conn.req(act, data);
        if (resp.state != expState) {
            console.error(`Expected state: '${expState}', but got: '${resp.state}'`);
            kill();
            process.exit(1);
        }
        if (typeof expData == "object" && expData != null) {
            if (!shallowEqual(expData, resp.data)) {
                console.error(`Expected data: '${expData}', but got: '${resp.data}'`);
                kill();
                process.exit(1);
            }
        } else {
            if (expData != resp.data) {
                console.error(`Expected data: '${expData}', but got: '${resp.data}'`);
                kill();
                process.exit(1);
            }
        }
        return resp.data;
    }

    for (const k in ws) {
        console.log(`Testing '${k}':`);
        const handler = [new conn(url)];
        await wait(100);
        const currTest = ws[k];
        let resp = true;
        try {
            resp = await currTest(handler[0], test, async ()=>{
                let h = new conn(url);
                await wait(100);
                handler.push(h);
                return h;
            });
        } catch (error) {
            console.error("Test Error: ", error);
            kill();
            process.exit(1);
        }
        
        handler.forEach(h=>h.close());
        if (resp === false) {
            console.log("Test respond with error indication!");
            kill();
            process.exit(1);
        }
    }
}