import { describe, it, before, after } from 'mocha';
import BoxError from '../boxerror.js';
import common from './common.js';
import assert from 'node:assert/strict';
import fs from 'node:fs';
import paths from '../paths.js';
import safe from 'safetydance';
import tasks from '../tasks.js';
import _ from '../underscore.js';


describe('task', function () {
    const { setup, cleanup } = common;

    before(setup);
    after(cleanup);

    let taskId;

    const TASK = {
        type: 'tasktype',
        args: [ 1 ],
        percent: 0,
        message: 'Queued'
    };

    it('add succeeds', async function () {
        const id = await tasks.add(TASK.type, TASK.args);
        assert.ok(id);
        taskId = id;
    });

    it('get succeeds', async function () {
        const task = await tasks.get(taskId);
        assert.deepEqual(_.pick(task, Object.keys(TASK)), TASK);
    });

    it('get random task fails', async function () {
        const task = await tasks.get('random');
        assert.equal(task, null);
    });

    it('update succeeds', async function () {
        TASK.percent = 34;
        TASK.message = 'almost ther';
        await tasks.update(taskId, { percent: TASK.percent, message: TASK.message });
        const task = await tasks.get(taskId);
        assert.deepEqual(_.pick(task, Object.keys(TASK)), TASK);
    });

    it('list succeeds - does not exist', async function () {
        const result = await tasks.list(1, 1, { type: 'randomtask' });
        assert.equal(result.length, 0);
    });

    it('list succeeds - by type', async function () {
        const result = await tasks.list(1, 1, { type: TASK.type });
        assert.equal(result.length, 1);
        assert.deepEqual(_.pick(result[0], Object.keys(TASK)), TASK);
    });

    it('list succeeds - all', async function () {
        const result = await tasks.list(1, 1, { type: null });
        assert.equal(result.length, 1);
        assert.deepEqual(_.pick(result[0], Object.keys(TASK)), TASK);
    });

    it('del succeeds', async function () {
        await tasks._del(taskId);
        const task = await tasks.get(taskId);
        assert.equal(task, null);
    });

    it('del missing task fails', async function () {
        const [error] = await safe(tasks._del('1235'));
        assert.equal(error.reason, BoxError.NOT_FOUND);
    });

    it('can run valid task - success', async function () {
        const successTaskId = await tasks.add(tasks._TASK_IDENTITY, [ 'ping' ]);

        const [error, result] = await safe(tasks.startTask(successTaskId, {}));
        if (error) throw error;
        assert.equal(result, 'ping');
    });

    it('can run valid task - error', async function () {
        const errorTaskId = await tasks.add(tasks._TASK_ERROR, [ 'ping' ]);

        const [error, result] = await safe(tasks.startTask(errorTaskId, {}));
        if (!error) throw new Error('expecting task to fail');
        assert.equal(error.message, 'Task crashed. Failed for arg: ping');
        assert.ok(!(result));
    });

    it('can get logs of crash', async function () {
        const crashTaskId = await tasks.add(tasks._TASK_CRASH, [ 'ping' ]);

        const [error, result] = await safe(tasks.startTask(crashTaskId, {}));
        if (!error) throw new Error('expecting task to crash');
        assert.ok(error.message.includes(`Task ${crashTaskId} crashed`));
        assert.ok(!(result));

        const logs = fs.readFileSync(`${paths.TASKS_LOG_DIR}/${crashTaskId}.log`, 'utf8');
        assert.ok(logs.includes('Crashing for arg: ping'));
    });

    it('can stop task', async function () {
        const sleepTaskId = await tasks.add(tasks._TASK_SLEEP, [ 10000 ]);

        setTimeout(async function () {
            await tasks.stopTask(sleepTaskId);
        }, 2000);

        const [error, result] = await safe(tasks.startTask(sleepTaskId, {}));
        if (!error) throw new Error('expecting task to stop');
        assert.ok(error.message.includes('stopped'));
        assert.equal(error.code, tasks.ESTOPPED);
        assert.ok(!(result));
    });

    it('task timesout', async function () {
        const timeoutTaskId = await tasks.add(tasks._TASK_SLEEP, [ 10000 ]);

        const [error, result] = await safe(tasks.startTask(timeoutTaskId, { timeout: 2000 }));
        if (!error) throw new Error('expecting task to timeout');
        assert.equal(error.code, tasks.ETIMEOUT);
        assert.ok(error.message.includes('timed out'));
        assert.ok(!(result));
    });
});