import { ApiProperty } from '@nestjs/swagger';
import {
  IsString,
  IsNotEmpty,
  IsEnum,
  IsNumber,
  IsInt,
  IsArray,
  IsDateString,
  IsOptional,
  IsBoolean,
  Min,
  ArrayMinSize,
  Matches,
} from 'class-validator';
import { MedicationFormEnum } from '../enums/medication-form.enum';
import { RepeatPatternEnum } from '../enums/repeat-pattern.enum';

/**
 * 创建药物 DTO
 */
export class CreateMedicationDto {
  @ApiProperty({ description: '药物名称', example: 'Metformin' })
  @IsString()
  @IsNotEmpty()
  name: string;

  @ApiProperty({
    description: '药物正面照片URL',
    example: 'https://cdn.example.com/medications/front_001.jpg',
    required: false,
  })
  @IsString()
  @IsOptional()
  photoUrl?: string;

  @ApiProperty({
    description: '药物侧面照片URL',
    example: 'https://cdn.example.com/medications/side_001.jpg',
    required: false,
  })
  @IsString()
  @IsOptional()
  sideImageUrl?: string;

  @ApiProperty({
    description: '药物辅助照片URL（可选的第三张图片）',
    example: 'https://cdn.example.com/medications/auxiliary_001.jpg',
    required: false,
  })
  @IsString()
  @IsOptional()
  auxiliaryImageUrl?: string;

  @ApiProperty({
    description: '药物剂型',
    enum: MedicationFormEnum,
    example: MedicationFormEnum.CAPSULE,
  })
  @IsEnum(MedicationFormEnum)
  @IsNotEmpty()
  form: MedicationFormEnum;

  @ApiProperty({ description: '剂量数值', example: 1 })
  @IsNumber()
  @Min(0.01)
  dosageValue: number;

  @ApiProperty({ description: '剂量单位', example: '粒' })
  @IsString()
  @IsNotEmpty()
  dosageUnit: string;

  @ApiProperty({ description: '每日服用次数', example: 2 })
  @IsInt()
  @Min(1)
  timesPerDay: number;

  @ApiProperty({
    description: '服药时间列表，格式：HH:mm',
    example: ['08:00', '20:00'],
    type: [String],
  })
  @IsArray()
  @ArrayMinSize(1)
  @IsString({ each: true })
  @Matches(/^([01]\d|2[0-3]):([0-5]\d)$/, {
    each: true,
    message: '服药时间格式必须为 HH:mm',
  })
  medicationTimes: string[];

  @ApiProperty({
    description: '重复模式',
    enum: RepeatPatternEnum,
    example: RepeatPatternEnum.DAILY,
  })
  @IsEnum(RepeatPatternEnum)
  @IsNotEmpty()
  repeatPattern: RepeatPatternEnum;

  @ApiProperty({
    description: '开始日期，ISO 8601 格式',
    example: '2025-01-01T00:00:00.000Z',
  })
  @IsDateString()
  @IsNotEmpty()
  startDate: string;

  @ApiProperty({
    description: '结束日期，ISO 8601 格式（可选）',
    example: '2025-12-31T23:59:59.999Z',
    required: false,
  })
  @IsDateString()
  @IsOptional()
  endDate?: string;

  @ApiProperty({
    description: '药品有效期，ISO 8601 格式（可选）',
    example: '2026-12-31T23:59:59.999Z',
    required: false,
  })
  @IsDateString()
  @IsOptional()
  expiryDate?: string;

  @ApiProperty({ description: '备注信息', example: '饭后服用', required: false })
  @IsString()
  @IsOptional()
  note?: string;

  @ApiProperty({
    description: '是否激活',
    example: true,
    required: false,
    default: true
  })
  @IsOptional()
  @IsBoolean()
  isActive?: boolean;
}