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

from typing import Optional
from pydantic import BaseModel, ConfigDict, Field, field_validator, model_validator

from app.core.base_schema import BaseSchema
from urllib.parse import urlparse


class ApplicationCreateSchema(BaseModel):
    """应用创建模型"""
    name: str = Field(..., max_length=64, description='应用名称')
    access_url: str = Field(..., max_length=255, description="访问地址")
    icon_url: Optional[str] = Field(None, max_length=300, description="应用图标URL")
    status: bool = Field(True, description="是否启用(True:启用 False:禁用)")
    description: Optional[str] = Field(default=None, max_length=255, description="描述")

    @model_validator(mode="before")
    @classmethod
    def _normalize(cls, data):
        """模型级前置处理：去除首尾空格，空字符串转为 None（可选字段），并规范布尔。"""
        if isinstance(data, dict):
            for key in ("name", "access_url", "icon_url", "description"):
                val = data.get(key)
                if isinstance(val, str):
                    val = val.strip()
                    # 将可选字段的空字符串转换为 None
                    if key in ("icon_url", "description") and val == "":
                        val = None
                    data[key] = val
            # 规范布尔字符串/数字为布尔值
            status_val = data.get("status")
            if isinstance(status_val, str):
                lowered = status_val.strip().lower()
                if lowered in {"true", "1", "y", "yes"}:
                    data["status"] = True
                elif lowered in {"false", "0", "n", "no"}:
                    data["status"] = False
            elif isinstance(status_val, int):
                data["status"] = bool(status_val)
        return data

    @field_validator('name')
    @classmethod
    def _validate_name_length(cls, v: str) -> str:
        if len(v) > 64:
            raise ValueError('应用名称长度不能超过64字符')
        return v

    @field_validator('access_url')
    @classmethod
    def _validate_access_url(cls, v: str) -> str:
        v = v.strip()
        if not v:
            raise ValueError('访问地址不能为空')
        parsed = urlparse(v)
        if parsed.scheme not in ('http', 'https'):
            raise ValueError('访问地址必须为 http/https URL')
        return v

    @field_validator('icon_url')
    @classmethod
    def _validate_icon_url(cls, v: Optional[str]) -> Optional[str]:
        if v is None:
            return v
        v = v.strip()
        if v == "":
            return None
        parsed = urlparse(v)
        if parsed.scheme not in ('http', 'https'):
            raise ValueError('应用图标URL必须为 http/https URL')
        return v


class ApplicationUpdateSchema(ApplicationCreateSchema):
    """应用更新模型"""
    ...


class ApplicationOutSchema(ApplicationCreateSchema, BaseSchema):
    """应用响应模型"""
    model_config = ConfigDict(from_attributes=True)