"""
后台管理系统数据传输对象定义

定义管理员认证、用户管理、模型管理相关API请求和响应的数据结构
"""
from datetime import datetime, date
from decimal import Decimal
from typing import Optional, List
from pydantic import BaseModel, ConfigDict, Field


# ==================== 认证相关 Schema ====================

class AdminLoginRequest(BaseModel):
    """管理员登录请求"""
    username: str = Field(..., min_length=1, max_length=50, description="用户名")
    password: str = Field(..., min_length=1, max_length=100, description="密码")


class AdminLoginResponse(BaseModel):
    """管理员登录响应"""
    token: str = Field(..., description="JWT Token")
    admin_id: int = Field(..., description="管理员ID")
    username: str = Field(..., description="用户名")
    nickname: str = Field(..., description="昵称")
    expires_at: datetime = Field(..., description="Token过期时间")


class AdminInfo(BaseModel):
    """管理员信息"""
    id: int
    username: str
    nickname: str
    status: str
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)


# ==================== 用户管理相关 Schema ====================

class UserListParams(BaseModel):
    """用户列表查询参数"""
    keyword: Optional[str] = Field(None, description="搜索关键词（用户ID/用户名/手机号/邮箱）")
    status: Optional[str] = Field(None, description="账户状态：active/disabled")
    register_start: Optional[date] = Field(None, description="注册开始日期")
    register_end: Optional[date] = Field(None, description="注册结束日期")
    sort_by: Optional[str] = Field("created_at", description="排序字段：created_at")
    sort_order: Optional[str] = Field("desc", description="排序方向：asc/desc")
    page: int = Field(1, ge=1, description="页码")
    size: int = Field(20, ge=1, le=100, description="每页数量")


class UserListItem(BaseModel):
    """用户列表项"""
    id: str
    username: Optional[str] = None
    nickname: str
    phone: Optional[str] = None
    registration_date: Optional[date] = None
    status: str = "active"
    is_verified: Optional[str] = None
    real_name: Optional[str] = None

    model_config = ConfigDict(from_attributes=True)


class UserDetailResponse(BaseModel):
    """用户详情响应"""
    id: str
    username: Optional[str] = None
    nickname: str
    phone: Optional[str] = None
    email: Optional[str] = None
    avatar: Optional[str] = None
    registration_date: Optional[date] = None
    status: str = "active"

    model_config = ConfigDict(from_attributes=True)


class UserUsageStats(BaseModel):
    """用户使用统计"""
    conversation_count: int = 0
    token_consumed: int = 0
    image_count: int = 0
    audio_count: int = 0
    audio_duration: int = 0
    video_count: int = 0
    api_call_count: int = 0
    api_input_tokens: int = 0
    api_output_tokens: int = 0


class UserStatusRequest(BaseModel):
    """用户状态变更请求"""
    status: str = Field(..., pattern="^(active|disabled)$", description="目标状态：active/disabled")


class ResetPasswordResponse(BaseModel):
    """密码重置响应"""
    user_id: str
    new_password: str


# ==================== 模型管理相关 Schema ====================

class ModelListParams(BaseModel):
    """模型列表查询参数"""
    keyword: Optional[str] = Field(None, description="搜索关键词（模型标识/显示名称/供应商）")
    category: Optional[int] = Field(None, description="模型分类")
    supplier: Optional[str] = Field(None, description="供应商")
    is_show_enabled: Optional[bool] = Field(None, description="是否展示")
    is_api_enabled: Optional[bool] = Field(None, description="是否启用API")
    page: int = Field(1, ge=1, description="页码")
    size: int = Field(20, ge=1, le=100, description="每页数量")


class ModelListItem(BaseModel):
    """模型列表项"""
    id: int
    model_code: str
    display_name: Optional[str] = None
    img: str = ""
    category: int
    categories: List[int] = []
    supplier: str
    description: Optional[str] = None       # 描述摘要（前80字）
    # 价格摘要：取第一条 is_active 价格记录
    price_label: Optional[str] = None       # 如 "input<=32k"
    input_price_original: Optional[Decimal] = None
    output_price_original: Optional[Decimal] = None
    input_price_discounted: Optional[Decimal] = None
    output_price_discounted: Optional[Decimal] = None
    discount_rate: Optional[Decimal] = None
    discount_label: Optional[str] = None
    price_unit: Optional[str] = None
    is_show_enabled: bool = True
    is_api_enabled: bool = False
    is_featured: bool = False
    is_search: bool = False
    is_thinking: bool = False

    model_config = ConfigDict(from_attributes=True)


class PriceTierItem(BaseModel):
    """价格阶梯项"""
    tier_min: int
    tier_max: Optional[int] = None
    input_price: Decimal
    output_price: Decimal


class ModelPriceDetail(BaseModel):
    """模型价格详情"""
    id: Optional[int] = None
    pricing_mode: str = "simple"
    input_price: Optional[Decimal] = None
    output_price: Optional[Decimal] = None
    unit: str = "tokens"
    currency: str = "CNY"
    tiers: Optional[List[PriceTierItem]] = None


class ModelDetailResponse(BaseModel):
    """模型详情响应"""
    id: int
    model_code: str
    display_name: Optional[str] = None
    img: Optional[str] = None
    category: int
    supplier: str
    description: Optional[str] = None
    custom_description: Optional[str] = None
    tag1: Optional[str] = None
    tag2: Optional[str] = None
    keywords: Optional[str] = None
    is_featured: bool = False
    is_search: bool = False
    is_thinking: bool = False
    is_show_enabled: bool = True
    is_api_enabled: bool = False
    source_keys: Optional[List[str]] = None
    normalized_keys: Optional[List[str]] = None
    created_at: datetime
    updated_at: datetime

    model_config = ConfigDict(from_attributes=True)


class ModelCreateRequest(BaseModel):
    """模型创建请求"""
    model_code: str = Field(..., min_length=1, max_length=200, description="模型唯一标识")
    display_name: Optional[str] = Field(None, max_length=255, description="显示名称")
    img: Optional[str] = Field(None, description="图标URL")
    category: int = Field(0, ge=0, le=8, description="模型分类")
    supplier: str = Field("Qwen", min_length=1, max_length=100, description="供应商")
    description: Optional[str] = Field(None, description="模型描述")
    custom_description: Optional[str] = Field(None, description="管理员自定义描述")
    tag1: Optional[str] = Field(None, max_length=100, description="主标签")
    tag2: Optional[str] = Field(None, max_length=100, description="次要标签")
    keywords: Optional[str] = Field(None, description="关键词")
    is_featured: bool = Field(False, description="是否精选")
    is_search: bool = Field(False, description="是否支持搜索")
    is_thinking: bool = Field(False, description="是否支持思考")
    is_show_enabled: bool = Field(True, description="是否展示")
    is_api_enabled: bool = Field(False, description="是否启用API")


class ModelUpdateRequest(BaseModel):
    """模型更新请求"""
    display_name: Optional[str] = Field(None, max_length=255, description="显示名称")
    img: Optional[str] = Field(None, description="图标URL")
    category: Optional[int] = Field(None, ge=0, le=8, description="模型分类")
    supplier: Optional[str] = Field(None, min_length=1, max_length=100, description="供应商")
    description: Optional[str] = Field(None, description="模型描述")
    custom_description: Optional[str] = Field(None, description="管理员自定义描述")
    tag1: Optional[str] = Field(None, max_length=100, description="主标签")
    tag2: Optional[str] = Field(None, max_length=100, description="次要标签")
    keywords: Optional[str] = Field(None, description="关键词")
    is_featured: Optional[bool] = Field(None, description="是否精选")
    is_search: Optional[bool] = Field(None, description="是否支持搜索")
    is_thinking: Optional[bool] = Field(None, description="是否支持思考")

class ModelPriceRequest(BaseModel):
    """模型价格设置请求"""
    label: str = Field("default", description="价格标签，如 input<=128k / 视频生成（720P）")
    tier_min: Optional[Decimal] = Field(None, description="阶梯下限")
    tier_max: Optional[Decimal] = Field(None, description="阶梯上限")
    tier_unit: Optional[str] = Field(None, description="阶梯单位：tokens/seconds/images")
    input_price: Optional[Decimal] = Field(None, description="输入原价")
    output_price: Optional[Decimal] = Field(None, description="输出原价")
    discount_rate: Optional[Decimal] = Field(Decimal("100"), description="折扣率 0-100，100=无折扣")
    unit: str = Field("元/每百万tokens", description="显示单位")
    display_multiplier: int = Field(1000000, description="展示倍数")
    currency: str = Field("CNY", description="货币单位")


class ModelStatusRequest(BaseModel):
    """模型状态变更请求"""
    field: str = Field(..., pattern="^(is_show_enabled|is_api_enabled|is_featured)$", description="状态字段")
    value: bool = Field(..., description="目标值")


# ==================== 本地模型管理相关 Schema ====================

class LocalModelListParams(BaseModel):
    """本地模型列表查询参数"""
    keyword: Optional[str] = Field(None, description="搜索关键词")
    user_id: Optional[str] = Field(None, description="用户ID筛选")
    visibility: Optional[str] = Field(None, description="可见性筛选: user/global")
    page: int = Field(1, ge=1, description="页码")
    size: int = Field(20, ge=1, le=100, description="每页数量")


class LocalModelListItem(BaseModel):
    """本地模型列表项"""
    id: int
    title: str
    name: str
    supplier: Optional[str] = "Custom"
    user_id: str
    username: Optional[str] = None
    base_url: str
    visibility: str = "user"
    category: int = 0
    created_at: datetime
    updated_at: datetime

    model_config = ConfigDict(from_attributes=True)


class LocalModelVisibilityRequest(BaseModel):
    """本地模型可见性变更请求"""
    visibility: str = Field(..., pattern="^(user|global)$", description="可见性: user/global")