"""文件系统配置服务"""

from __future__ import annotations


def init_app(app):
    """初始化文件系统配置（系统启动时自动执行）"""
    with app.app_context():
        # pass
        _init_file_system_config()


def _init_file_system_config():
    """初始化文件系统配置"""
    from iti.applications.extensions import db
    from iti.applications.models import SysConfig
    from iti.applications.common.enums import StatusEnum

    configs = [
        {
            "type": "SYSTEM",
            "name": "后端访问地址",
            "code": "BACKEND_URL",
            "value": "http://localhost:5000",
            "desc": "后端访问地址。应配置为前端可访问的后端地址（通常是Nginx反向代理的公网地址）",
            "sort": 90,
        },
        {
            "type": "SYSTEM",
            "name": "文件回收站功能",
            "code": "FILE_RECYCLE_ENABLED",
            "value": "true",
            "desc": "是否启用文件回收站功能。启用后，删除文件会移动到回收站而不是直接删除",
            "sort": 100,
        },
        {
            "type": "SYSTEM",
            "name": "回收站保留天数",
            "code": "FILE_RECYCLE_DAYS",
            "value": "30",
            "desc": "回收站文件保留天数，超过此天数的文件将被自动清理",
            "sort": 101,
        },
        {
            "type": "SYSTEM",
            "name": "文件分享功能",
            "code": "FILE_SHARE_ENABLED",
            "value": "true",
            "desc": "是否启用文件分享功能",
            "sort": 102,
        },
        {
            "type": "SYSTEM",
            "name": "分享默认过期时间",
            "code": "FILE_SHARE_DEFAULT_EXPIRE_HOURS",
            "value": "168",
            "desc": "文件分享默认过期时间（小时），168小时=7天，0表示永久",
            "sort": 103,
        },
        {
            "type": "SYSTEM",
            "name": "分片上传阈值",
            "code": "FILE_CHUNK_THRESHOLD",
            "value": "104857600",
            "desc": "文件大小超过此阈值（字节）时使用分片上传，默认100MB。前端根据此值判断使用直接上传还是分片上传",
            "sort": 104,
        },
        {
            "type": "SYSTEM",
            "name": "分片上传分片大小",
            "code": "FILE_CHUNK_SIZE",
            "value": "2097152",
            "desc": "分片上传时每个分片的大小（字节），默认2MB",
            "sort": 105,
        },
    ]

    for config_data in configs:
        # 检查配置是否已存在
        existing = SysConfig.query.filter_by(
            type=config_data["type"], code=config_data["code"]
        ).first()

        if not existing:
            config = SysConfig(
                type=config_data["type"],
                name=config_data["name"],
                code=config_data["code"],
                value=config_data["value"],
                desc=config_data["desc"],
                sort=config_data["sort"],
                status=StatusEnum.ENABLED,
            )
            db.session.add(config)

    try:
        db.session.commit()
    except Exception as e:
        db.session.rollback()
        print(f"⚠️  文件系统配置初始化失败: {e}")