/**
 * 验证 pages.json 的所有 page.style 块都已经有 navigationBarTitleText 字段,
 * 且都在 // #ifdef / // #ifndef 块之外 (保证所有平台生效).
 *
 * 运行: node scripts/verify-nav-title.js
 */
const fs = require('fs');
const path = require('path');

const PAGES_JSON = path.join(__dirname, '..', 'pages.json');
const s = fs.readFileSync(PAGES_JSON, 'utf-8');
const lines = s.split(/\r?\n/);

let i = 0;
let totalStyle = 0, totalNavTitle = 0, insideIfdef = 0, doubleTitle = 0, missingTitle = [];
// 跟踪 subPackage 上下文, 让 missing-title 报出全路径 (root/path), 不只是 path
let currentSubRoot = null;

while (i < lines.length) {
	// 跟踪 subPackage 的 root, 找路径时回退可见
	const rootMatch = lines[i].match(/^\s*"root"\s*:\s*"([^"]+)"/);
	if (rootMatch) {
		currentSubRoot = rootMatch[1];
		i++;
		continue;
	}

	const m = lines[i].match(/^(\s*)"style"\s*:\s*\{\s*,?\s*$/);
	if (m) {
		totalStyle++;
		const blockStart = i;
		i++;
		const bodyStart = i;
		let depth = 1;
		while (i < lines.length && depth > 0) {
			const c = lines[i];
			let b = 0;
			let inS = false, e = false;
			for (let k = 0; k < c.length; k++) {
				const ch = c[k];
				if (inS) {
					if (e) e = false;
					else if (ch === '\\') e = true;
					else if (ch === '"') inS = false;
				} else {
					if (ch === '/' && c[k + 1] === '/') break;
					if (ch === '"') inS = true;
					else if (ch === '{') b++;
					else if (ch === '}') b--;
				}
			}
			depth += b;
			i++;
		}
		const body = lines.slice(bodyStart, i - 1);
		const titleIdxs = body
			.map((l, idx) => /^\s*"navigationBarTitleText"\s*:/.test(l) ? idx : -1)
			.filter(x => x >= 0);
		totalNavTitle += titleIdxs.length;
		if (titleIdxs.length > 1) doubleTitle++;

		// 找最近的 path 行, 若处于 subPackage 则补上 root 前缀, 报全路径
		let pathLine = '';
		for (let k = blockStart - 1; k >= 0; k--) {
			const pm = lines[k].match(/^\s*"path"\s*:\s*"([^"]+)"/);
			if (pm) {
				pathLine = pm[1];
				break;
			}
			// 跨过 subPackage 边界 (遇到另一个 root) 视为顶层 pages
			const rm = lines[k].match(/^\s*"root"\s*:\s*"([^"]+)"/);
			if (rm) {
				currentSubRoot = rm[1];
				break;
			}
		}
		if (titleIdxs.length === 0) {
			// 只在缺标题时, 用 currentSubRoot 校正路径
			// (找 path 时可能已被同包兄弟 root 行先 break 出, 这里用循环外的 currentSubRoot)
			const fullPath = pathLine && currentSubRoot ? `${currentSubRoot}/${pathLine}` : pathLine;
			missingTitle.push(fullPath);
		} else {
			for (const tIdx of titleIdxs) {
				let d = 0;
				for (let k = 0; k < tIdx; k++) {
					const t = body[k];
					if (/^\s*\/\/\s*#(ifdef|ifndef)\b/.test(t)) d++;
					else if (/^\s*\/\/\s*#endif\b/.test(t)) d--;
				}
				if (d >= 1) insideIfdef++;
			}
		}
	} else {
		i++;
	}
}

console.log('style blocks:', totalStyle);
console.log('navigationBarTitleText occurrences:', totalNavTitle);
console.log('inside-ifdef:', insideIfdef);
console.log('double-title:', doubleTitle);
console.log('missing-title:', missingTitle.length, missingTitle);
const ok = totalStyle === totalNavTitle && insideIfdef === 0 && doubleTitle === 0 && missingTitle.length === 0;
console.log(ok ? '✅ PASS' : '❌ FAIL');
process.exit(ok ? 0 : 1);