import { GITEA_REPOSITORY, PR_NUMBER, PR_HEAD_BRANCH, PR_BASE_BRANCH, getLLMConfig } from './config.js';
import { loadRoles, getRoleIntro } from './roles.js';
import { getPRDiff, postComment } from './gitea.js';
import { analyzeWithRole, loadOldFindings, mergeFindings, sortByLevel } from './findings.js';

const WORKSPACE = process.env.GITHUB_WORKSPACE || '/workspace';

async function main() {
  console.log('='.repeat(60));
  console.log('🚀 Step1: Pipeline 啟動');
  console.log(`  repo=${GITEA_REPOSITORY}  PR=#${PR_NUMBER}`);
  console.log(`  ${PR_HEAD_BRANCH} -> ${PR_BASE_BRANCH}`);

  // 偵測 LLM
  const { provider, baseURL, model } = getLLMConfig();
  if (!provider) {
    console.error('❌ 未設定任何 LLM API Key，請檢查 action inputs');
    process.exit(1);
  }
  console.log(`  LLM: provider=${provider}  model=${model}  base_url=${baseURL}`);

  // 載入角色
  const roles = loadRoles();
  console.log(`  已載入 ${roles.length} 個角色: [${roles.map(r => r.name).join(', ')}]`);

  // 取得 PR diff
  console.log('\n📋 Step1: 取得 PR Diff');
  let diff;
  try {
    diff = await getPRDiff();
    console.log(`  diff 長度: ${diff.length} 字元`);
  } catch (e) {
    console.error(`  ❌ 取得 diff 失敗: ${e.message}`);
    process.exit(1);
  }

  if (!diff.trim()) {
    console.log('  ⚠️  diff 為空，無需審查');
    process.exit(0);
  }

  // 發布角色介紹 comment
  console.log('\n💬 Step1: 發布角色介紹 Comment');
  try {
    const intro = getRoleIntro(roles) + `\n\n> 🔍 服務：${provider}  模型：${model}`;
    await postComment(intro);
    console.log('  ✅ 角色介紹 comment 發布成功');
  } catch (e) {
    console.log(`  ⚠️  comment 發布失敗（繼續執行）: ${e.message}`);
  }

  // Step2: 各角色分析 diff 產生新 findings
  console.log('\n📊 Step2: Findings 產生');
  const newFindings = [];
  for (const role of roles) {
    try {
      const found = await analyzeWithRole(role, diff);
      newFindings.push(...found);
    } catch (e) {
      console.log(`  ⚠️  [${role.name}] 分析失敗（跳過）: ${e.message}`);
    }
  }
  console.log(`  Step2 完成: 新 findings 總計 ${newFindings.length} 筆`);

  // Step3: 讀取舊 findings，合併去重
  console.log('\n🔀 Step3: Findings 合併');
  const oldFindings = loadOldFindings(WORKSPACE);
  const mergedFindings = mergeFindings(oldFindings, newFindings);
  const sorted = sortByLevel(mergedFindings);
  console.log(`  Step3 merged findings total=${sorted.length} (critical=${sorted.filter(f=>f.level==='critical').length} warning=${sorted.filter(f=>f.level==='warning').length} info=${sorted.filter(f=>f.level==='info').length})`);

  console.log('\n📝 Step4: Findings 寫入與 Comment 發布（待實作）');
  console.log('  [stub] 寫入 findings.json，發布 comment...');

  console.log('\n💾 Step5: 記憶區 Commit/Push（待實作）');
  console.log('  [stub] commit & push findings.json...');

  console.log('\n🚦 Step6: 嚴重問題檢查（待實作）');
  console.log('  [stub] 檢查 critical findings...');

  console.log('\n✅ Pipeline 完成');
  console.log('='.repeat(60));
}

main().catch(e => {
  console.error('❌ Runner failed:', e.message);
  process.exit(1);
});