"""Insurance Blueprint 路由注册

在基础平台的 main.py 中添加以下代码即可挂载所有自研路由：

    from insurance.routes import register_insurance_routes
    register_insurance_routes(app)
"""
import os
from flask import Flask


def register_insurance_routes(app: Flask):
    """注册所有 insurance 模块的 Blueprint 到基础平台主应用。"""
    from insurance.auth.routes import auth_bp
    from insurance.chat.routes import chat_bp
    from insurance.chat.agent_routes import agent_bp
    from insurance.recommend.routes import recommend_bp
    from insurance.kb.routes import kb_bp
    from insurance.kb.retrieval_routes import retrieval_bp
    from insurance.admin.routes import admin_bp
    from insurance.stats.routes import stats_bp
    from insurance.wecom.routes import wecom_bp
    from insurance.ppt.routes import ppt_bp
    from insurance.admin.ppt_admin_routes import ppt_admin_bp
    from insurance.poster.routes import poster_bp
    from insurance.generation.routes import workspace_bp

    # 使用 /insurance/ 前缀避免与 Dify 的 /api/ 路由冲突
    app.register_blueprint(auth_bp, url_prefix="/insurance/auth")
    app.register_blueprint(chat_bp, url_prefix="/insurance/chat")
    app.register_blueprint(agent_bp, url_prefix="/insurance/agents")
    app.register_blueprint(recommend_bp, url_prefix="/insurance/recommend")
    app.register_blueprint(kb_bp, url_prefix="/insurance/kb")
    app.register_blueprint(retrieval_bp, url_prefix="/insurance/retrieval")
    app.register_blueprint(admin_bp, url_prefix="/insurance/admin")
    app.register_blueprint(stats_bp, url_prefix="/insurance/stats")
    app.register_blueprint(wecom_bp, url_prefix="/insurance/wecom")
    app.register_blueprint(ppt_bp, url_prefix="/insurance/ppt")
    app.register_blueprint(ppt_admin_bp, url_prefix="/insurance/admin/ppt")
    app.register_blueprint(poster_bp, url_prefix="/insurance/poster")
    app.register_blueprint(workspace_bp, url_prefix="/insurance/workspace")

    # 注册 Celery 自研任务（不修改 BaoDan Celery 基座）
    _register_celery_tasks(app)

    # 恢复过期任务（启动时清理无心跳的 running/queued 任务）
    _recover_stale_tasks(app)

    # 注册全局异常处理器
    from insurance.utils.error_handler import register_error_handlers
    register_error_handlers(app)

    # 注册增强健康检查端点
    _register_health_checks(app)


def _register_celery_tasks(app: Flask):
    """将自研 Celery 任务注册到 BaoDan 的 Celery 实例。

    不修改 BaoDan 的 ext_celery.py，通过动态添加 imports 实现。
    """
    try:
        celery_app = app.extensions.get("celery")
        if celery_app:
            # 将自研任务模块添加到 Celery imports
            insurance_tasks = [
                "insurance.generation.celery_tasks",
            ]
            current_imports = list(celery_app.conf.get("imports", []) or [])
            for task_module in insurance_tasks:
                if task_module not in current_imports:
                    current_imports.append(task_module)
            celery_app.conf.update(imports=current_imports)
            app.logger.info(f"已注册自研 Celery 任务: {insurance_tasks}")
        else:
            app.logger.debug("Celery 未初始化，跳过自研任务注册")
    except Exception as e:
        app.logger.warning(f"注册自研 Celery 任务失败: {e}")


def _recover_stale_tasks(app: Flask):
    """启动时恢复过期任务。"""
    try:
        with app.app_context():
            from insurance.generation.task_service import recover_stale_tasks
            recover_stale_tasks()
    except Exception as e:
        app.logger.warning(f"恢复过期任务失败: {e}")


def _register_health_checks(app: Flask):
    """注册增强健康检查端点。"""
    from flask import jsonify

    @app.route("/insurance/health/ready", methods=["GET"])
    def health_ready():
        """就绪检查：DB、Redis、storage 可写、必要表字段。"""
        checks = {}

        # DB 检查
        try:
            from insurance.db.compat import db
            from sqlalchemy import text
            db.session.execute(text("SELECT 1"))
            checks["database"] = "ok"
        except Exception as e:
            checks["database"] = f"error: {e}"

        # Redis 检查
        try:
            from insurance.db.compat import redis_client
            if redis_client:
                redis_client.ping()
                checks["redis"] = "ok"
            else:
                checks["redis"] = "not_configured"
        except Exception as e:
            checks["redis"] = f"error: {e}"

        # Storage 可写检查
        try:
            from flask import current_app
            upload_dir = current_app.config.get("UPLOAD_FOLDER", "uploads")
            os.makedirs(upload_dir, exist_ok=True)
            test_file = os.path.join(upload_dir, ".health_check")
            with open(test_file, "w") as f:
                f.write("ok")
            os.remove(test_file)
            checks["storage"] = "ok"
        except Exception as e:
            checks["storage"] = f"error: {e}"

        # 关键表检查
        try:
            from insurance.db.compat import db
            from sqlalchemy import text
            tables = ["insurance_ppt_templates", "poster_records", "system_settings"]
            missing = []
            for t in tables:
                try:
                    db.session.execute(text(f"SELECT 1 FROM {t} LIMIT 0"))
                except Exception:
                    missing.append(t)
            if missing:
                checks["tables"] = f"missing: {', '.join(missing)}"
            else:
                checks["tables"] = "ok"
        except Exception as e:
            checks["tables"] = f"error: {e}"

        all_ok = all(v == "ok" or v == "not_configured" for v in checks.values())
        status_code = 200 if all_ok else 503
        return jsonify({"status": "ready" if all_ok else "degraded", "checks": checks}), status_code