'use strict';

const test = require('node:test');
const assert = require('node:assert/strict');

const {
    isUnset,
    requireEnv,
    normalizeBetaFlag,
    loadConfig,
} = require('../app/config');

test('isUnset 將 undefined/空字串/null 字面值視為未設定', () => {
    assert.equal(isUnset(undefined), true);
    assert.equal(isUnset(''), true);
    assert.equal(isUnset('null'), true);
    assert.equal(isUnset('value'), false);
});

test('requireEnv 未設定時拋錯，有值時回傳原值', () => {
    assert.throws(() => requireEnv('FOO', ''), /FOO 未設定/);
    assert.equal(requireEnv('FOO', 'bar'), 'bar');
});

test('normalizeBetaFlag 僅 "true" 視為啟用', () => {
    assert.equal(normalizeBetaFlag('true'), true);
    assert.equal(normalizeBetaFlag('false'), false);
    assert.equal(normalizeBetaFlag(undefined), false);
    assert.equal(normalizeBetaFlag('TRUE'), false);
});

test('loadConfig 解析完整設定', () => {
    const config = loadConfig({
        GITEA_SERVER_URL: 'https://gitea.example.com',
        GITEA_REPOSITORY: 'owner/repo',
        GITEA_TOKEN: 'secret',
        IS_BETA: 'true',
    });

    assert.deepEqual(config, {
        serverUrl: 'https://gitea.example.com',
        repository: 'owner/repo',
        token: 'secret',
        isBeta: true,
    });
});

test('loadConfig 缺少 token 視為匿名（null）', () => {
    const config = loadConfig({
        GITEA_SERVER_URL: 'https://gitea.example.com',
        GITEA_REPOSITORY: 'owner/repo',
        GITEA_TOKEN: 'null',
    });

    assert.equal(config.token, null);
    assert.equal(config.isBeta, false);
});

test('loadConfig 缺少必填項目時拋錯', () => {
    assert.throws(() => loadConfig({ GITEA_REPOSITORY: 'owner/repo' }), /GITEA_SERVER_URL 未設定/);
});

test('loadConfig 於 GITEA_SERVER_URL 非合法 URL 時拋錯', () => {
    assert.throws(() => loadConfig({
        GITEA_SERVER_URL: 'not-a-url',
        GITEA_REPOSITORY: 'owner/repo',
    }), /GITEA_SERVER_URL 格式錯誤/);
});

test('loadConfig 於 GITEA_SERVER_URL 使用非 http(s) 協定時拋錯', () => {
    assert.throws(() => loadConfig({
        GITEA_SERVER_URL: 'ftp://gitea.example.com',
        GITEA_REPOSITORY: 'owner/repo',
    }), /必須使用 http 或 https/);
});