# -*- coding: utf-8 -*-

import os
import sys
from pathlib import Path
from typing import Annotated
import uvicorn
import typer
from fastapi import FastAPI
from alembic import command
from alembic.config import Config
import importlib

from app.common.enums import EnvironmentEnum


fastapiadmin_cli = typer.Typer()

# 初始化 Alembic 配置
alembic_cfg = Config("alembic.ini")


def create_app() -> FastAPI:
    """创建 FastAPI 应用实例"""
    from app.plugin.init_app import (
        register_middlewares,
        register_exceptions,
        register_routers,
        register_files,
        reset_api_docs,
        lifespan
    )
    from app.config.setting import settings
    # 创建FastAPI应用
    app = FastAPI(**settings.FASTAPI_CONFIG, lifespan=lifespan)
    
    from app.core.logger import setup_logging
    # 初始化日志
    setup_logging()
    # 注册各种组件
    register_exceptions(app)
    # 注册中间件
    register_middlewares(app)
    # 注册路由
    register_routers(app)
    # 注册静态文件
    register_files(app)
    # 重设API文档
    reset_api_docs(app)

    return app

# typer.Option是非必填；typer.Argument是必填
@fastapiadmin_cli.command(name="run",
                          help="启动 FastapiAdmin 服务, 运行 python main.py run --env=dev 不加参数默认 dev 环境")
def run(env: Annotated[
    EnvironmentEnum, typer.Option("--env", help="运行环境 (dev, prod)")] = EnvironmentEnum.DEV) -> None:
    """启动FastAPI服务"""

    try:
        # 设置环境变量
        os.environ["ENVIRONMENT"] = env.value
        typer.echo("项目启动中...")

        # 清除配置缓存，确保重新加载配置
        from app.config.setting import get_settings
        get_settings.cache_clear()
        settings = get_settings()

        from app.core.logger import setup_logging
        setup_logging()

        # 显示启动横幅
        from app.utils.banner import worship
        worship(env.value)

        # 检测是否为PyInstaller打包环境
        is_packaged = getattr(sys, 'frozen', False)

        if is_packaged:
            app = create_app()
            uvicorn.run(
                app=app,
                host=settings.SERVER_HOST,
                port=settings.SERVER_PORT,
                reload=False,  # 打包后强制关闭 reload
                factory=False,
                log_config=None
            )
        else:
            app_str = "main:create_app"
            uvicorn.run(
                app=app_str,  # 开发环境传字符串路径
                host=settings.SERVER_HOST,
                port=settings.SERVER_PORT,
                reload=env == EnvironmentEnum.DEV,  # 开发环境开启 reload
                factory=(app_str.endswith("create_app")),  # 若传函数名则开启 factory
                log_config=None
            )

    except KeyboardInterrupt:
        from app.utils.console import display_shutdown_info
        display_shutdown_info()
    except Exception as e:
        raise
    finally:
        from app.core.logger import cleanup_logging
        cleanup_logging()

@fastapiadmin_cli.command(name="revision", help="生成新的 Alembic 迁移脚本, 运行 python main.py revision --env=dev")
def revision(env: Annotated[EnvironmentEnum, typer.Option("--env", help="运行环境 (dev, prod)")] = EnvironmentEnum.DEV) -> None:
    """生成新的 Alembic 迁移脚本"""
    os.environ["ENVIRONMENT"] = env.value
    command.revision(alembic_cfg, autogenerate=True, message="迁移脚本")
    typer.echo(f"迁移脚本已生成")

@fastapiadmin_cli.command(name="upgrade", help="应用最新的 Alembic 迁移, 运行 python main.py upgrade --env=dev")
def upgrade(env: Annotated[EnvironmentEnum, typer.Option("--env", help="运行环境 (dev, prod)")] = EnvironmentEnum.DEV) -> None:
    """应用最新的 Alembic 迁移"""
    os.environ["ENVIRONMENT"] = env.value
    command.upgrade(alembic_cfg, "head")
    typer.echo("所有迁移已应用。")


if __name__ == '__main__':

    fastapiadmin_cli()