#!/usr/bin/env node
/**
 * 江中 VOC 报告生成主入口
 * 
 * 输入：data/jiangzhong-{product}-voc.json
 * 输出：reports/jiangzhong-{product}-voc-report.html
 * 
 * 用法：
 *   node scripts/tools/gen-voc-report.js              # 全量 3 产品
 *   node scripts/tools/gen-voc-report.js liver        # 指定单产品
 */

const fs = require('fs');
const path = require('path');
const { analyze, extractThemes, cleanText } = require('./voc-analyze');
const { buildHTML } = require('./voc-render');

const PRODUCTS = [
    { id: 'liver', file: 'jiangzhong-liver-voc.json' },
    { id: 'probiotic', file: 'jiangzhong-probiotic-voc.json' },
    { id: 'monkey', file: 'jiangzhong-monkey-voc.json' },
];

const DATA_DIR = path.resolve(__dirname, '..', '..', 'data');
const REPORT_DIR = path.resolve(__dirname, '..', '..', 'reports');
if (!fs.existsSync(REPORT_DIR)) fs.mkdirSync(REPORT_DIR, { recursive: true });

function generateOne(productId) {
    const target = PRODUCTS.find((p) => p.id === productId);
    if (!target) throw new Error(`unknown product: ${productId}`);

    const vocPath = path.join(DATA_DIR, target.file);
    if (!fs.existsSync(vocPath)) {
        console.log(`  ⚠️  ${target.id}: 数据缺失 ${vocPath}`);
        return;
    }

    const voc = JSON.parse(fs.readFileSync(vocPath, 'utf-8'));
    const A = analyze(voc);

    // 收集语料做主题聚类
    const commentTexts = A.topComments.map((c) => cleanText(c.content || ''));
    const noteTexts = A.topNotes.map((n) => cleanText((n.title || '') + ' ' + (n.desc || '')));
    const themes = extractThemes([...commentTexts, ...noteTexts]);

    const html = buildHTML({
        product: voc.product,
        category: voc.category,
        collectedAt: new Date(voc.collected_at).toLocaleDateString('zh-CN'),
        A,
        themes,
    });

    const outPath = path.join(REPORT_DIR, `jiangzhong-${target.id}-voc-report.html`);
    fs.writeFileSync(outPath, html, 'utf-8');
    const kb = (html.length / 1024).toFixed(1);
    console.log(`  ✅ ${voc.product}: ${outPath} (${kb}KB, ${A.metrics.notes} 笔记 / ${A.metrics.sampleComments} 评论)`);
}

function main() {
    const argId = process.argv[2];
    console.log('');
    console.log('╔══════════════════════════════════════════════════════════╗');
    console.log('║   江中 VOC 报告生成器                                      ║');
    console.log('╚══════════════════════════════════════════════════════════╝');
    console.log(`  输出目录: ${REPORT_DIR}`);
    console.log('');

    if (argId) {
        generateOne(argId);
    } else {
        for (const p of PRODUCTS) {
            try { generateOne(p.id); }
            catch (e) { console.log(`  ❌ ${p.id}: ${e.message}`); }
        }
    }
    console.log('');
    console.log('📄 Done.');
}

main();