import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
import { 
  IsString, 
  IsOptional, 
  IsEnum, 
  IsDateString, 
  IsNumber, 
  Min, 
  IsArray,
  ArrayNotEmpty
} from 'class-validator';

export class AnalyticsQueryDto {
  @ApiProperty({ 
    description: '指标类型',
    example: 'user_activity'
  })
  @IsString({ message: '指标类型必须是字符串' })
  metricType: string;

  @ApiPropertyOptional({ 
    description: '实体类型',
    example: 'tg_account'
  })
  @IsOptional()
  @IsString({ message: '实体类型必须是字符串' })
  entityType?: string;

  @ApiPropertyOptional({ 
    description: '实体ID',
    example: 1
  })
  @IsOptional()
  @IsNumber({}, { message: '实体ID必须是数字' })
  entityId?: number;

  @ApiProperty({ 
    description: '开始日期',
    example: '2023-12-01'
  })
  @IsDateString({}, { message: '开始日期格式不正确' })
  startDate: string;

  @ApiProperty({ 
    description: '结束日期',
    example: '2023-12-31'
  })
  @IsDateString({}, { message: '结束日期格式不正确' })
  endDate: string;

  @ApiPropertyOptional({ 
    description: '时间周期',
    enum: ['hour', 'day', 'week', 'month', 'year'],
    example: 'day'
  })
  @IsOptional()
  @IsEnum(['hour', 'day', 'week', 'month', 'year'], {
    message: '时间周期必须是有效的枚举值'
  })
  period?: string;

  @ApiPropertyOptional({ 
    description: '分组维度',
    example: ['status', 'type']
  })
  @IsOptional()
  @IsArray({ message: '分组维度必须是数组' })
  groupBy?: string[];

  @ApiPropertyOptional({ 
    description: '聚合函数',
    enum: ['count', 'sum', 'avg', 'min', 'max'],
    example: 'count'
  })
  @IsOptional()
  @IsEnum(['count', 'sum', 'avg', 'min', 'max'], {
    message: '聚合函数必须是有效的枚举值'
  })
  aggregation?: string;

  @ApiPropertyOptional({ 
    description: '限制结果数量',
    example: 100
  })
  @IsOptional()
  @IsNumber({}, { message: '限制数量必须是数字' })
  @Min(1, { message: '限制数量不能小于1' })
  limit?: number;
}

export class CreateAnalyticsRecordDto {
  @ApiProperty({ 
    description: '事件类型',
    enum: ['user_action', 'system_event', 'business_metric', 'performance_metric', 'error_event', 'custom'],
    example: 'user_action'
  })
  @IsEnum(['user_action', 'system_event', 'business_metric', 'performance_metric', 'error_event', 'custom'], {
    message: '事件类型必须是有效的枚举值'
  })
  eventType: string;

  @ApiProperty({ 
    description: '事件名称',
    example: 'login'
  })
  @IsString({ message: '事件名称必须是字符串' })
  eventName: string;

  @ApiPropertyOptional({ 
    description: '实体类型',
    example: 'user'
  })
  @IsOptional()
  @IsString({ message: '实体类型必须是字符串' })
  entityType?: string;

  @ApiPropertyOptional({ 
    description: '实体ID',
    example: 1
  })
  @IsOptional()
  @IsNumber({}, { message: '实体ID必须是数字' })
  entityId?: number;

  @ApiPropertyOptional({ 
    description: '用户ID',
    example: 1
  })
  @IsOptional()
  @IsNumber({}, { message: '用户ID必须是数字' })
  userId?: number;

  @ApiPropertyOptional({ 
    description: '事件数据',
    example: { action: 'click', target: 'button' }
  })
  @IsOptional()
  eventData?: any;

  @ApiPropertyOptional({ 
    description: '上下文信息',
    example: { page: 'dashboard', source: 'mobile' }
  })
  @IsOptional()
  context?: any;

  @ApiPropertyOptional({ 
    description: '数值指标',
    example: 100.5
  })
  @IsOptional()
  @IsNumber({}, { message: '数值指标必须是数字' })
  value?: number;

  @ApiPropertyOptional({ 
    description: '数值单位',
    example: 'ms'
  })
  @IsOptional()
  @IsString({ message: '数值单位必须是字符串' })
  unit?: string;

  @ApiPropertyOptional({ 
    description: '标签',
    example: { category: 'performance', severity: 'high' }
  })
  @IsOptional()
  tags?: any;
}

export class BatchAnalyticsQueryDto {
  @ApiProperty({ 
    description: '查询列表',
    type: [AnalyticsQueryDto]
  })
  @IsArray({ message: '查询列表必须是数组' })
  @ArrayNotEmpty({ message: '查询列表不能为空' })
  queries: AnalyticsQueryDto[];
}

export class UserActivityQueryDto {
  @ApiProperty({ 
    description: '开始日期',
    example: '2023-12-01'
  })
  @IsDateString({}, { message: '开始日期格式不正确' })
  startDate: string;

  @ApiProperty({ 
    description: '结束日期',
    example: '2023-12-31'
  })
  @IsDateString({}, { message: '结束日期格式不正确' })
  endDate: string;

  @ApiPropertyOptional({ 
    description: '用户ID',
    example: 1
  })
  @IsOptional()
  @IsNumber({}, { message: '用户ID必须是数字' })
  userId?: number;
}

export class PerformanceQueryDto {
  @ApiProperty({ 
    description: '开始日期',
    example: '2023-12-01'
  })
  @IsDateString({}, { message: '开始日期格式不正确' })
  startDate: string;

  @ApiProperty({ 
    description: '结束日期',
    example: '2023-12-31'
  })
  @IsDateString({}, { message: '结束日期格式不正确' })
  endDate: string;

  @ApiPropertyOptional({ 
    description: '指标名称',
    example: 'response_time'
  })
  @IsOptional()
  @IsString({ message: '指标名称必须是字符串' })
  metricName?: string;
}

export class ErrorAnalyticsQueryDto {
  @ApiProperty({ 
    description: '开始日期',
    example: '2023-12-01'
  })
  @IsDateString({}, { message: '开始日期格式不正确' })
  startDate: string;

  @ApiProperty({ 
    description: '结束日期',
    example: '2023-12-31'
  })
  @IsDateString({}, { message: '结束日期格式不正确' })
  endDate: string;
}