"""
消息通知相关的Pydantic Schema
"""
from typing import Optional, List, Dict, Any
from datetime import datetime
from pydantic import BaseModel, Field
from enum import Enum


class NotificationTypeEnum(str, Enum):
    """通知类型枚举"""
    SYSTEM = "system"  # 系统通知
    APPROVAL = "approval"  # 审批通知
    MAINTENANCE = "maintenance"  # 维修通知
    ALLOCATION = "allocation"  # 调拨通知
    ASSET = "asset"  # 资产通知
    WARRANTY = "warranty"  # 保修到期通知
    REMINDER = "reminder"  # 提醒通知


class PriorityEnum(str, Enum):
    """优先级枚举"""
    LOW = "low"
    NORMAL = "normal"
    HIGH = "high"
    URGENT = "urgent"


class NotificationBase(BaseModel):
    """消息通知基础Schema"""
    recipient_id: int = Field(..., description="接收人ID")
    title: str = Field(..., min_length=1, max_length=200, description="通知标题")
    content: str = Field(..., min_length=1, description="通知内容")
    notification_type: NotificationTypeEnum = Field(..., description="通知类型")
    priority: PriorityEnum = Field(default=PriorityEnum.NORMAL, description="优先级")
    related_entity_type: Optional[str] = Field(None, max_length=50, description="关联实体类型")
    related_entity_id: Optional[int] = Field(None, description="关联实体ID")
    action_url: Optional[str] = Field(None, max_length=500, description="操作链接")
    extra_data: Optional[Dict[str, Any]] = Field(None, description="额外数据")
    send_email: bool = Field(default=False, description="是否发送邮件")
    send_sms: bool = Field(default=False, description="是否发送短信")
    expire_at: Optional[datetime] = Field(None, description="过期时间")


class NotificationCreate(NotificationBase):
    """创建消息通知Schema"""
    pass


class NotificationUpdate(BaseModel):
    """更新消息通知Schema"""
    is_read: Optional[bool] = Field(None, description="是否已读")


class NotificationInDB(BaseModel):
    """数据库中的消息通知Schema"""
    id: int
    recipient_id: int
    recipient_name: str
    title: str
    content: str
    notification_type: str
    priority: str
    is_read: bool
    read_at: Optional[datetime]
    related_entity_type: Optional[str]
    related_entity_id: Optional[int]
    action_url: Optional[str]
    extra_data: Optional[Dict[str, Any]]
    sent_via_email: bool
    sent_via_sms: bool
    created_at: datetime
    expire_at: Optional[datetime]

    class Config:
        from_attributes = True


class NotificationResponse(NotificationInDB):
    """消息通知响应Schema"""
    pass


class NotificationQueryParams(BaseModel):
    """消息通知查询参数"""
    recipient_id: Optional[int] = Field(None, description="接收人ID")
    notification_type: Optional[NotificationTypeEnum] = Field(None, description="通知类型")
    priority: Optional[PriorityEnum] = Field(None, description="优先级")
    is_read: Optional[bool] = Field(None, description="是否已读")
    start_time: Optional[datetime] = Field(None, description="开始时间")
    end_time: Optional[datetime] = Field(None, description="结束时间")
    keyword: Optional[str] = Field(None, description="关键词")
    page: int = Field(default=1, ge=1, description="页码")
    page_size: int = Field(default=20, ge=1, le=100, description="每页数量")


class NotificationBatchCreate(BaseModel):
    """批量创建通知Schema"""
    recipient_ids: List[int] = Field(..., min_items=1, description="接收人ID列表")
    title: str = Field(..., min_length=1, max_length=200, description="通知标题")
    content: str = Field(..., min_length=1, description="通知内容")
    notification_type: NotificationTypeEnum = Field(..., description="通知类型")
    priority: PriorityEnum = Field(default=PriorityEnum.NORMAL, description="优先级")
    action_url: Optional[str] = Field(None, max_length=500, description="操作链接")
    extra_data: Optional[Dict[str, Any]] = Field(None, description="额外数据")


class NotificationBatchUpdate(BaseModel):
    """批量更新通知Schema"""
    notification_ids: List[int] = Field(..., min_items=1, description="通知ID列表")
    is_read: bool = Field(..., description="是否已读")


class NotificationStatistics(BaseModel):
    """通知统计Schema"""
    total_count: int = Field(..., description="总通知数")
    unread_count: int = Field(..., description="未读数")
    read_count: int = Field(..., description="已读数")
    high_priority_count: int = Field(..., description="高优先级数")
    urgent_count: int = Field(..., description="紧急通知数")
    type_distribution: List[Dict[str, Any]] = Field(default_factory=list, description="类型分布")


# ===== 通知模板Schema =====

class NotificationTemplateBase(BaseModel):
    """通知模板基础Schema"""
    template_code: str = Field(..., min_length=1, max_length=50, description="模板编码")
    template_name: str = Field(..., min_length=1, max_length=200, description="模板名称")
    notification_type: NotificationTypeEnum = Field(..., description="通知类型")
    title_template: str = Field(..., min_length=1, max_length=200, description="标题模板")
    content_template: str = Field(..., min_length=1, description="内容模板")
    variables: Optional[Dict[str, str]] = Field(None, description="变量说明")
    priority: PriorityEnum = Field(default=PriorityEnum.NORMAL, description="默认优先级")
    send_email: bool = Field(default=False, description="是否发送邮件")
    send_sms: bool = Field(default=False, description="是否发送短信")
    is_active: bool = Field(default=True, description="是否启用")
    description: Optional[str] = Field(None, description="模板描述")


class NotificationTemplateCreate(NotificationTemplateBase):
    """创建通知模板Schema"""
    pass


class NotificationTemplateUpdate(BaseModel):
    """更新通知模板Schema"""
    template_name: Optional[str] = Field(None, min_length=1, max_length=200)
    title_template: Optional[str] = Field(None, min_length=1, max_length=200)
    content_template: Optional[str] = Field(None, min_length=1)
    variables: Optional[Dict[str, str]] = None
    priority: Optional[PriorityEnum] = None
    send_email: Optional[bool] = None
    send_sms: Optional[bool] = None
    is_active: Optional[bool] = None
    description: Optional[str] = None


class NotificationTemplateInDB(BaseModel):
    """数据库中的通知模板Schema"""
    id: int
    template_code: str
    template_name: str
    notification_type: str
    title_template: str
    content_template: str
    variables: Optional[Dict[str, str]]
    priority: str
    send_email: bool
    send_sms: bool
    is_active: bool
    description: Optional[str]
    created_at: datetime
    updated_at: datetime

    class Config:
        from_attributes = True


class NotificationTemplateResponse(NotificationTemplateInDB):
    """通知模板响应Schema"""
    pass


class NotificationSendFromTemplate(BaseModel):
    """从模板发送通知Schema"""
    template_code: str = Field(..., description="模板编码")
    recipient_ids: List[int] = Field(..., min_items=1, description="接收人ID列表")
    variables: Dict[str, Any] = Field(default_factory=dict, description="模板变量")
    related_entity_type: Optional[str] = Field(None, description="关联实体类型")
    related_entity_id: Optional[int] = Field(None, description="关联实体ID")
    action_url: Optional[str] = Field(None, description="操作链接")