const WebSocket = require('ws');

const ws = new WebSocket('ws://localhost:5000/ws');

var nonceCounter = 1;
var nonceCallbacks = {};

// Setup

ws.on('open', function open() {
    const packet = JSON.stringify({ username: "test-user", password: "123456" });
    ws.send(packet);

    runTest();
});

ws.on('message', function incoming(rawMessage) {
    const parsed = JSON.parse(rawMessage);
    const callback = nonceCallbacks[parsed.nonce];
    if (callback) {
        callback(parsed);
    } else {
        if (messageResolverQueue.length > 0) {
            const resolver = messageResolverQueue.shift();
            resolver(parsed);
        } else {
            messageQueue.push(parsed);
        }
        console.log(parsed);
    }
});

async function send (action, message) {
    const nonce = nonceCounter++;
    let promise = new Promise((resolve, reject) => {
        nonceCallbacks[nonce] = res => {
            if (res.error) reject(Error(res.error));
            else resolve(res);
        };;
    });

    const packet = JSON.stringify({ nonce, action, ...message });
    ws.send(packet);
    return promise;
}

function waitMessage() {
    return new Promise((resolve) => {
        if (messageQueue.length > 0) {
            resolve(messageQueue.shift());
        } else {
            messageResolverQueue.push(resolve);
        }
    });
}


// Testing

async function runTest() {
    console.log("Initial Chats",
        await send('get-chats')
    );

    console.log("Create Agent",
        await send('create-agent', {body: {
            name: 'First Agent',
            description: 'First agent does nothing',
            kind: 'simple',
            data: {}
        }})
    );

    console.log("Get Agents",
        await send('get-agents')
    );

    await testChats();

    process.exit();
}

async function testChats () {
    let response = await send('get-chats')
    let chat = response.chats[0];

    let msgRes = await send('chat-send-message', {
        chatId: chat.id,
        content: "Hello World!",
    });
    console.log('message sent', msgRes);

    let nextMessage = await waitMessage();
    console.log('next incoming message', nextMessage);
}