import { IsString, IsEnum, IsOptional } from 'class-validator';
import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
import { PaymentIntentStatus } from '@prisma/client';

export enum PaymentMethodTypeEnum { 
  TELEBIRR = 'TELEBIRR',  // Ethiopia
  CBE_BIRR = 'CBE_BIRR',  // Ethiopia
  EBIRR = 'EBIRR',        // Ethiopia
  WAAFI = 'WAAFI',        // Djibouti
  CARD = 'CARD',          // International
  WALLET = 'WALLET'       // Internal
}

export class InitiatePaymentDto {
  @ApiProperty({ example: 'booking-uuid' }) @IsString() bookingId: string;
  @ApiProperty({ 
    enum: PaymentMethodTypeEnum,
    description: 'Payment method: TELEBIRR/CBE_BIRR/EBIRR (Ethiopia), WAAFI (Djibouti), CARD (International), WALLET (Internal)',
    example: 'TELEBIRR'
  }) @IsEnum(PaymentMethodTypeEnum) method: PaymentMethodTypeEnum;
  @ApiPropertyOptional({ description: 'Saved payment method ID (optional)' }) @IsOptional() @IsString() paymentMethodId?: string;
}

export class RefundDto {
  @ApiProperty() @IsString() bookingId: string;
  @ApiPropertyOptional() @IsOptional() @IsString() reason?: string;
}

export class AddPaymentMethodDto {
  @ApiProperty() @IsString() userId: string;
  @ApiProperty({ enum: PaymentMethodTypeEnum }) @IsEnum(PaymentMethodTypeEnum) type: PaymentMethodTypeEnum;
  @ApiProperty() @IsString() displayName: string;
  @ApiPropertyOptional() @IsOptional() @IsString() maskedHint?: string;
}

export class ClientActionDto {
  @ApiProperty({ enum: ['REDIRECT'] }) type: 'REDIRECT';
  @ApiProperty() url: string;
}

export class InitiateResponseDto {
  @ApiProperty() intentId: string;
  @ApiProperty({ enum: PaymentIntentStatus }) status: PaymentIntentStatus;
  @ApiPropertyOptional({ type: ClientActionDto }) clientAction?: ClientActionDto;
  @ApiPropertyOptional() merchantOrderId?: string;
}

export class IntentStatusDto {
  @ApiProperty() intentId: string;
  @ApiProperty({ enum: PaymentIntentStatus }) status: PaymentIntentStatus;
  @ApiPropertyOptional({ type: ClientActionDto }) clientAction?: ClientActionDto;
  @ApiPropertyOptional() merchantOrderId?: string;
  @ApiPropertyOptional() paidAt?: string;
  @ApiPropertyOptional() failureCode?: string;
  @ApiPropertyOptional() failureMessage?: string;
}