"""AirLabs Project —— 主入口"""
from dotenv import load_dotenv
load_dotenv()

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
from fastapi.responses import FileResponse
from database import engine, Base
from models import (
    User, Role, PhaseGroup, BUILTIN_ROLES, COST_PERM_MIGRATION,
    Project, ProjectMilestone, DEFAULT_MILESTONES
)
from auth import hash_password
import os
import logging

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

# 创建所有表
Base.metadata.create_all(bind=engine)

# ── 手动迁移：为旧 SQLite 数据库补充 role_id 列 ──
from config import DATABASE_URL as _db_url
if _db_url.startswith("sqlite"):
    import sqlalchemy
    with engine.connect() as conn:
        cols = [r[1] for r in conn.execute(sqlalchemy.text("PRAGMA table_info('users')"))]
        if "role_id" not in cols:
            conn.execute(sqlalchemy.text("ALTER TABLE users ADD COLUMN role_id INTEGER"))
            conn.commit()
            logger.info("[MIGRATE] added column users.role_id")

app = FastAPI(title="AirLabs Project", version="1.0.0")

# CORS
from config import CORS_ORIGINS
app.add_middleware(
    CORSMiddleware,
    allow_origins=CORS_ORIGINS,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# 注册路由
from routers.auth import router as auth_router
from routers.users import router as users_router
from routers.projects import router as projects_router
from routers.submissions import router as submissions_router
from routers.costs import router as costs_router
from routers.dashboard import router as dashboard_router
from routers.roles import router as roles_router
try:
    from routers.reports import router as reports_router
except ImportError as e:
    reports_router = None
    logging.warning(f"[路由] reports 模块加载失败: {e}")

app.include_router(auth_router)
app.include_router(users_router)
app.include_router(projects_router)
app.include_router(submissions_router)
app.include_router(costs_router)
app.include_router(dashboard_router)
app.include_router(roles_router)
if reports_router:
    app.include_router(reports_router)

# 前端静态文件
frontend_dir = os.path.join(os.path.dirname(os.path.dirname(__file__)), "frontend", "dist")
if os.path.exists(frontend_dir):
    app.mount("/assets", StaticFiles(directory=os.path.join(frontend_dir, "assets")), name="assets")

    @app.get("/{full_path:path}")
    async def serve_frontend(full_path: str):
        file_path = os.path.join(frontend_dir, full_path)
        if os.path.isfile(file_path):
            return FileResponse(file_path)
        return FileResponse(os.path.join(frontend_dir, "index.html"))


@app.on_event("startup")
async def start_scheduler():
    """启动定时任务调度器"""
    try:
        from services.scheduler_service import setup_scheduler
        setup_scheduler()
    except Exception as e:
        logger.warning(f"[定时任务] 启动失败（不影响核心功能）: {e}")


@app.on_event("shutdown")
async def stop_scheduler():
    """关闭定时任务调度器"""
    try:
        from services.scheduler_service import scheduler
        scheduler.shutdown(wait=False)
        logger.info("[定时任务] 已关闭")
    except Exception:
        pass


@app.on_event("startup")
def init_roles_and_admin():
    """首次启动时创建内置角色和默认管理员"""
    from database import SessionLocal
    db = SessionLocal()
    try:
        # 初始化内置角色
        for role_name, role_def in BUILTIN_ROLES.items():
            existing = db.query(Role).filter(Role.name == role_name).first()
            if not existing:
                role = Role(
                    name=role_name,
                    description=role_def["description"],
                    permissions=role_def["permissions"],
                    is_system=1,
                )
                db.add(role)
                print(f"[OK] created role: {role_name}")
        db.commit()

        # 迁移旧成本权限 → 细分权限
        old_cost_perms = set(COST_PERM_MIGRATION.keys())
        for role in db.query(Role).all():
            perms = list(role.permissions or [])
            changed = False
            for old_perm, new_perms in COST_PERM_MIGRATION.items():
                if old_perm in perms:
                    perms.remove(old_perm)
                    for np in new_perms:
                        if np not in perms:
                            perms.append(np)
                    changed = True
            if changed:
                role.permissions = perms
                print(f"[MIGRATE] upgraded cost permissions for role: {role.name}")
        db.commit()

        # 为已有项目补充默认里程碑
        for proj in db.query(Project).all():
            has_ms = db.query(ProjectMilestone).filter(
                ProjectMilestone.project_id == proj.id
            ).first()
            if not has_ms:
                for ms in DEFAULT_MILESTONES:
                    db.add(ProjectMilestone(
                        project_id=proj.id,
                        name=ms["name"],
                        phase=PhaseGroup(ms["phase"]),
                        sort_order=ms.get("sort_order", 0),
                    ))
                print(f"[MIGRATE] added default milestones for project: {proj.name}")
        db.commit()

        # 迁移：为旧用户补充默认 role_id（成员角色）
        member_role = db.query(Role).filter(Role.name == "成员").first()
        if member_role:
            orphans = db.query(User).filter(User.role_id.is_(None)).all()
            for u in orphans:
                u.role_id = member_role.id
                print(f"[MIGRATE] assigned default role '成员' to user: {u.username}")
            if orphans:
                db.commit()

        # 创建默认管理员（关联超级管理员角色）
        admin_role = db.query(Role).filter(Role.name == "超级管理员").first()
        if admin_role and not db.query(User).filter(User.username == "admin").first():
            owner = User(
                username="admin",
                password_hash=hash_password("admin123"),
                name="管理员",
                phase_group=PhaseGroup.PRODUCTION,
                role_id=admin_role.id,
                monthly_salary=0,
            )
            db.add(owner)
            db.commit()
            print("[OK] default admin created: admin / admin123")
    finally:
        db.close()