import sys
import traceback
from config import GITEA_REPOSITORY, PR_NUMBER, PR_HEAD_BRANCH, PR_BASE_BRANCH, get_llm_config
from roles import load_roles, get_role_intro
from gitea import get_pr_diff, post_comment


def main():
    print("=" * 60)
    print("🚀 Step1: Pipeline 啟動")
    print(f"  repo={GITEA_REPOSITORY}  PR=#{PR_NUMBER}")
    print(f"  {PR_HEAD_BRANCH} -> {PR_BASE_BRANCH}")

    # 偵測 LLM
    provider, _, base_url, model = get_llm_config()
    if not provider:
        print("❌ 未設定任何 LLM API Key，請檢查 action inputs")
        sys.exit(1)
    print(f"  LLM: provider={provider}  model={model}  base_url={base_url}")

    # 載入角色
    roles = load_roles()
    print(f"  已載入 {len(roles)} 個角色: {[r['name'] for r in roles]}")

    # 取得 PR diff
    print("\n📋 Step1: 取得 PR Diff")
    try:
        diff = get_pr_diff()
        print(f"  diff 長度: {len(diff)} 字元")
    except Exception as e:
        print(f"  ❌ 取得 diff 失敗: {e}")
        sys.exit(1)

    if not diff.strip():
        print("  ⚠️  diff 為空，無需審查")
        sys.exit(0)

    # 發布角色介紹 comment
    print("\n💬 Step1: 發布角色介紹 Comment")
    try:
        intro = get_role_intro(roles)
        intro += f"\n\n> 🔍 服務：{provider}  模型：{model}"
        post_comment(intro)
        print("  ✅ 角色介紹 comment 發布成功")
    except Exception as e:
        print(f"  ⚠️  comment 發布失敗（繼續執行）: {e}")

    print("\n📊 Step2: Findings 產生（待實作）")
    print("  [stub] 各角色分析 diff...")

    print("\n🔀 Step3: Findings 合併與去重（待實作）")
    print("  [stub] 合併新舊 findings...")

    print("\n📝 Step4: Findings 寫入與 Comment 發布（待實作）")
    print("  [stub] 寫入 findings.json，發布 comment...")

    print("\n💾 Step5: 記憶區 Commit/Push（待實作）")
    print("  [stub] commit & push findings.json...")

    print("\n🚦 Step6: 嚴重問題檢查（待實作）")
    print("  [stub] 檢查 critical findings...")

    print("\n✅ Pipeline 完成")
    print("=" * 60)


if __name__ == "__main__":
    try:
        main()
    except SystemExit:
        raise
    except Exception:
        print("❌ Runner failed:")
        traceback.print_exc()
        sys.exit(1)