import fs from 'fs';
import path from 'path';
import { postComment } from './gitea.js';
import { FINDINGS_PATH } from './config.js';
import { ok, line } from './log.js';

const LEVEL_EMOJI = { critical: '🔴', warning: '🟡', info: '🔵' };
const LEVEL_LABEL = { critical: '嚴重', warning: '警告', info: '建議' };

function findingRow(f) {
  return `| ${LEVEL_EMOJI[f.level] || ''} ${LEVEL_LABEL[f.level] || f.level} | ${f.role} | ${f.location} | ${f.suggestion} |`;
}

function buildTable(findings) {
  const rows = findings.map(findingRow).join('\n');
  return `| 等級 | 審查員 | 位置 | 建議 |\n|------|--------|------|------|\n${rows}`;
}

/**
 * 寫入 findings.json。
 * 預設寫到 workspace；若提供 mirrorDir，則同步寫入另一份供 repo commit 使用。
 */
export function saveFindings(workspace, findings, mirrorDir = null) {
  const targets = [workspace];
  if (mirrorDir && mirrorDir !== workspace) targets.push(mirrorDir);

  for (const targetDir of targets) {
    const fullPath = path.join(targetDir, FINDINGS_PATH);
    fs.mkdirSync(path.dirname(fullPath), { recursive: true });
    fs.writeFileSync(fullPath, JSON.stringify(findings, null, 2) + '\n', 'utf8');
    ok(`findings 寫入: ${fullPath} (${findings.length} 筆)`);
  }
}

/**
 * 發布所有舊問題 comment（一次發布，依等級排序）
 */
export async function postOldFindingsComment(findings) {
  const old = findings.filter(f => !f.is_new);
  if (old.length === 0) {
    line('無舊問題，跳過');
    return;
  }
  const body = `## 📋 舊有未解決問題（${old.length} 筆）\n\n${buildTable(old)}`;
  await postComment(body);
  ok(`舊問題 comment 發布 (${old.length} 筆)`);
}

/**
 * 發布新問題中非 critical 的 comment（一次發布）
 */
export async function postNewNonCriticalComment(findings) {
  const items = findings.filter(f => f.is_new && f.level !== 'critical');
  if (items.length === 0) {
    line('無新的非嚴重問題，跳過');
    return;
  }
  const body = `## 🔍 新發現問題（${items.length} 筆）\n\n${buildTable(items)}`;
  await postComment(body);
  ok(`新問題（非嚴重）comment 發布 (${items.length} 筆)`);
}

/**
 * 每個新 critical 問題各發一個 comment
 */
export async function postNewCriticalComments(findings) {
  const criticals = findings.filter(f => f.is_new && f.level === 'critical');
  if (criticals.length === 0) {
    line('無新的嚴重問題，跳過');
    return;
  }
  for (const f of criticals) {
    const body = `## 🚨 嚴重問題\n\n${buildTable([f])}`;
    await postComment(body);
    ok(`嚴重問題 comment 發布: [${f.role}] ${f.location}`);
  }
}