/**
 * P2 动态 key 验证脚本
 *
 * 作用：枚举审计报告 P2 中运行时拼接的 $lang() key 的所有已知取值，
 * 模拟 common/js/lang.js 的合并/解析逻辑，检查这些 key 是否都能在
 * zh-cn / en-us 语言包中解析。
 *
 * 用法：node scripts/verify-p2-keys.js
 */

const fs = require('fs');
const path = require('path');

const ROOT = path.resolve(__dirname, '..');

function loadLangFile(filePath) {
	const fullPath = path.join(ROOT, filePath);
	if (!fs.existsSync(fullPath)) {
		console.error('Missing language pack:', filePath);
		return {};
	}
	const content = fs.readFileSync(fullPath, 'utf-8');
	const match = content.match(/export\s+const\s+lang\s*=\s*([\s\S]*?);?\s*$/);
	if (!match) return {};
	try {
		return eval('(' + match[1] + ')');
	} catch (e) {
		console.error('Failed to parse', filePath, e.message);
		return {};
	}
}

function getValue(obj, keys) {
	let current = obj;
	for (const key of keys) {
		if (current && typeof current === 'object' && !Array.isArray(current) && key in current) {
			current = current[key];
		} else {
			return undefined;
		}
	}
	return current;
}

function toCamelCaseName(name) {
	return String(name || '').replace(/[-_]([a-z])/g, function(_, letter) {
		return letter.toUpperCase();
	});
}

function deepCloneLang(obj) {
	if (obj === null || typeof obj !== 'object') return obj;
	if (Array.isArray(obj)) {
		const result = new Array(obj.length);
		for (let i = 0; i < obj.length; i++) {
			result[i] = deepCloneLang(obj[i]);
		}
		return result;
	}
	const result = {};
	for (const k in obj) {
		if (Object.prototype.hasOwnProperty.call(obj, k)) {
			result[k] = deepCloneLang(obj[k]);
		}
	}
	return result;
}

const FORBIDDEN_KEYS = new Set(['__proto__', 'constructor', 'prototype']);

function deepMergeLang(target, source) {
	if (target === null || typeof target !== 'object') return source;
	if (source === null || typeof source !== 'object') return source;
	if (Array.isArray(target) || Array.isArray(source)) return source;

	for (const key in source) {
		if (!Object.prototype.hasOwnProperty.call(source, key)) continue;
		if (FORBIDDEN_KEYS.has(key)) continue;

		const srcVal = source[key];
		const tgtVal = target[key];

		if (
			srcVal !== null && typeof srcVal === 'object' && !Array.isArray(srcVal) &&
			tgtVal !== null && typeof tgtVal === 'object' && !Array.isArray(tgtVal)
		) {
			target[key] = deepMergeLang(tgtVal, srcVal);
		} else {
			target[key] = deepCloneLang(srcVal);
		}
	}
	return target;
}

function normalizeSharedLangPack(packPath, langData) {
	if (!langData || typeof langData !== 'object') return {};

	const segments = String(packPath || '').split('/');
	const group = segments[0];
	const fileName = segments[segments.length - 1];
	if (group !== 'components' && group !== 'components-diy') return langData;

	if (langData[group]) return langData;

	const componentName = toCamelCaseName(fileName);
	const keys = Object.keys(langData);

	if (keys.length === 1 && langData[keys[0]] && typeof langData[keys[0]] === 'object') {
		return {
			[group]: langData
		};
	}

	return {
		[group]: {
			[componentName]: langData
		}
	};
}

function normalizePageLangPack(packPath, langData) {
	if (!packPath || !langData || typeof langData !== 'object') return langData || {};

	const segments = String(packPath).split('/').filter(Boolean);
	if (!segments.length) return langData;

	let leaf = langData;
	let hasLeaf = true;
	for (const segment of segments) {
		const key = toCamelCaseName(segment);
		if (leaf && typeof leaf === 'object' && !Array.isArray(leaf) && leaf[key] !== undefined) {
			leaf = leaf[key];
		} else {
			hasLeaf = false;
			break;
		}
	}

	const lastSegment = toCamelCaseName(segments[segments.length - 1]);
	const currentPageLeaf =
		hasLeaf && leaf && typeof leaf === 'object' && !Array.isArray(leaf)
			? leaf
			: (langData[lastSegment] && typeof langData[lastSegment] === 'object' && !Array.isArray(langData[lastSegment]) ? langData[lastSegment] : langData);
	let result = deepCloneLang(langData);
	if (currentPageLeaf !== langData) {
		result = deepMergeLang(deepCloneLang(currentPageLeaf), result);
	}
	if (!result[lastSegment]) {
		result[lastSegment] = deepCloneLang(currentPageLeaf);
	}

	let namespaced = {};
	{
		let cursor = namespaced;
		for (let i = 0; i < segments.length; i++) {
			const segment = toCamelCaseName(segments[i]);
			cursor[segment] = i === segments.length - 1 ? deepCloneLang(currentPageLeaf) : {};
			cursor = cursor[segment];
		}
	}

	// 同步建立 snake_case 镜像:让 camelCase 与 snake_case 路径都能解析到同一份 leaf
	// 与 bundle 服务器侧 emit 形式对齐(bundle 用 snake_case 段名,如 point.order_list.statusAll)
	const nested = [];
	{
		let cursor = namespaced;
		nested.push(cursor);
		for (let i = 0; i < segments.length - 1; i++) {
			cursor = cursor[toCamelCaseName(segments[i])];
			nested.push(cursor);
		}
	}
	for (let i = 0; i < segments.length; i++) {
		const raw = segments[i];
		const camel = toCamelCaseName(raw);
		const snake = raw.replace(/([A-Z])/g, '_$1').replace(/-/g, '_').toLowerCase();
		if (snake !== camel) {
			const isLeaf = i === segments.length - 1;
			nested[i][snake] = isLeaf ? deepCloneLang(currentPageLeaf) : {};
		}
	}

	return deepMergeLang(result, namespaced);
}

function buildContext(locale, sharedPacks, pagePackPath) {
	let context = deepCloneLang(loadLangFile(`lang/${locale}/common.js`));

	for (const sharedPath of sharedPacks) {
		const pack = loadLangFile(`lang/${locale}/${sharedPath}.js`);
		const normalized = normalizeSharedLangPack(sharedPath, pack);
		context = deepMergeLang(context, normalized);
	}

	if (pagePackPath) {
		const pack = loadLangFile(`lang/${locale}/${pagePackPath}.js`);
		const normalized = normalizePageLangPack(pagePackPath, pack);
		context = deepMergeLang(context, normalized);
	}

	return context;
}

function checkKey(context, key) {
	const value = getValue(context, key.split('.'));
	return typeof value === 'string' ? value : undefined;
}

// ===================== 动态 key 定义 =====================

const P2_CASES = [
	{
		file: 'components/payment/payment.vue',
		locale: 'zh-cn',
		shared: ['components/payment'],
		keys: ['components.payment.alipay', 'components.payment.wechatpay', 'components.payment.balancePay']
	},
	{
		file: 'components/payment/payment.vue',
		locale: 'en-us',
		shared: ['components/payment'],
		keys: ['components.payment.alipay', 'components.payment.wechatpay', 'components.payment.balancePay']
	},
	{
		file: 'pages_order/list.vue',
		locale: 'zh-cn',
		page: 'order/list',
		keys: ['order.list.status.all', 'order.list.status.waitpay', 'order.list.status.waitsend', 'order.list.status.waitconfirm', 'order.list.status.waitrate']
	},
	{
		file: 'pages_order/list.vue',
		locale: 'en-us',
		page: 'order/list',
		keys: ['order.list.status.all', 'order.list.status.waitpay', 'order.list.status.waitsend', 'order.list.status.waitconfirm', 'order.list.status.waitrate']
	},
	{
		file: 'pages_promotion/fenxiao/order.vue',
		locale: 'zh-cn',
		page: 'fenxiao/order',
		keys: ['all', 'pendingSettlement', 'settled', 'refunded']
	},
	{
		file: 'pages_promotion/fenxiao/order.vue',
		locale: 'en-us',
		page: 'fenxiao/order',
		keys: ['all', 'pendingSettlement', 'settled', 'refunded']
	},
	{
		file: 'pages_promotion/fenxiao/team.vue',
		locale: 'zh-cn',
		page: 'fenxiao/team',
		keys: ['levelOne', 'levelTwo']
	},
	{
		file: 'pages_promotion/fenxiao/team.vue',
		locale: 'en-us',
		page: 'fenxiao/team',
		keys: ['levelOne', 'levelTwo']
	},
	{
		file: 'pages_promotion/point/order_list.vue',
		locale: 'zh-cn',
		page: 'point/order_list',
		keys: ['point.order_list.statusAll', 'point.order_list.statusPendingPayment', 'point.order_list.statusCompleted']
	},
	{
		file: 'pages_promotion/point/order_list.vue',
		locale: 'en-us',
		page: 'point/order_list',
		keys: ['point.order_list.statusAll', 'point.order_list.statusPendingPayment', 'point.order_list.statusCompleted']
	},
	{
		file: 'pages_tool/goods/evaluate.vue',
		locale: 'zh-cn',
		page: 'goods/evaluate',
		keys: ['tabAll', 'tabPositive', 'tabNeutral', 'tabNegative']
	},
	{
		file: 'pages_tool/goods/evaluate.vue',
		locale: 'en-us',
		page: 'goods/evaluate',
		keys: ['tabAll', 'tabPositive', 'tabNeutral', 'tabNegative']
	},
	{
		file: 'pages_tool/pay/cashier.vue',
		locale: 'zh-cn',
		page: 'pay/cashier',
		keys: ['pay.cashier.alipay', 'pay.cashier.wechatpay']
	},
	{
		file: 'pages_tool/pay/cashier.vue',
		locale: 'en-us',
		page: 'pay/cashier',
		keys: ['pay.cashier.alipay', 'pay.cashier.wechatpay']
	}
];

// ===================== 执行校验 =====================

let allOk = true;
let currentFile = '';

for (const c of P2_CASES) {
	if (currentFile !== c.file) {
		console.log(`\nChecking ${c.file}:`);
		currentFile = c.file;
	}

	const context = buildContext(c.locale, c.shared || [], c.page);
	for (const key of c.keys) {
		const value = checkKey(context, key);
		if (value === undefined) {
			console.log(`  ❌ [${c.locale}] MISSING: ${key}`);
			allOk = false;
		} else {
			console.log(`  ✅ [${c.locale}] ${key} => ${value}`);
		}
	}
}

console.log('\n⚠️  components-diy/diy-tab.vue 的 title 为运行时 DIY 数据，无法静态枚举，建议通过 DIY 数据规范/白名单保证。');

if (allOk) {
	console.log('\n✅ 所有可枚举的 P2 动态 key 均可解析');
	process.exit(0);
} else {
	console.log('\n❌ 部分 P2 动态 key 缺失');
	process.exit(1);
}