'use strict';

const { test, afterEach } = require('node:test');
const assert = require('node:assert/strict');
const logger = require('../logger');

const realStdout = process.stdout.write;
const realStderr = process.stderr.write;

afterEach(() => {
    process.stdout.write = realStdout;
    process.stderr.write = realStderr;
});

// 同時攔截 stdout 與 stderr，回傳本次 run() 內各自寫出的字串
function capture(run) {
    const out = [];
    const err = [];
    process.stdout.write = (chunk) => { out.push(String(chunk)); return true; };
    process.stderr.write = (chunk) => { err.push(String(chunk)); return true; };
    try {
        run();
    } finally {
        process.stdout.write = realStdout;
        process.stderr.write = realStderr;
    }
    return { out: out.join(''), err: err.join('') };
}

const TIME = /\[\d{4}\/\d{2}\/\d{2} \d{2}:\d{2}:\d{2}\]/;

test('info 未帶 stage 時以 [INF][時間]: 格式輸出至 stdout', () => {
    const { out, err } = capture(() => logger.info('IS_BETA=false'));
    assert.match(out, new RegExp(`^\\[INF\\]${TIME.source}: IS_BETA=false\\n$`));
    assert.equal(err, '');
});

test('info 帶 stage 時以 [階段][INF][時間]: 格式輸出至 stdout', () => {
    const { out, err } = capture(() => logger.info('IS_BETA=false', '參數檢查'));
    assert.match(out, new RegExp(`^\\[參數檢查\\]\\[INF\\]${TIME.source}: IS_BETA=false\\n$`));
    assert.equal(err, '');
});

test('error 未帶 stage 時以 [ERR][時間]: 格式輸出至 stderr，且不寫入 stdout', () => {
    const { out, err } = capture(() => logger.error('GITEA_SERVER_URL 未設定'));
    assert.match(err, new RegExp(`^\\[ERR\\]${TIME.source}: GITEA_SERVER_URL 未設定\\n$`));
    assert.equal(out, '');
});

test('error 帶 stage 時以 [階段][ERR][時間]: 格式輸出至 stderr', () => {
    const { err } = capture(() => logger.error('讀取失敗', '取得舊版本'));
    assert.match(err, new RegExp(`^\\[取得舊版本\\]\\[ERR\\]${TIME.source}: 讀取失敗\\n$`));
});

test('forStage 回傳的子記錄器自動帶入階段名稱', () => {
    const staged = logger.forStage('計算版本號');
    const { out, err } = capture(() => {
        staged.info('NEW_VERSION=0.0.6');
        staged.error('計算錯誤');
    });
    assert.match(out, new RegExp(`^\\[計算版本號\\]\\[INF\\]${TIME.source}: NEW_VERSION=0.0.6\\n$`));
    assert.match(err, new RegExp(`^\\[計算版本號\\]\\[ERR\\]${TIME.source}: 計算錯誤\\n$`));
});

test('info/error 的時間戳為 yyyy/MM/dd HH:mm:ss 格式', () => {
    const { out } = capture(() => logger.info('x'));
    assert.match(out, TIME);
});