import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
import { Type } from 'class-transformer';
import {
  ArrayMinSize,
  IsArray,
  IsBoolean,
  IsInt,
  IsOptional,
  IsString,
  Max,
  Min,
} from 'class-validator';

export class UpdateReschedulePolicyDto {
  @ApiPropertyOptional({ example: 30, description: '% of the leg fare charged as a change fee' })
  @IsOptional() @Type(() => Number) @IsInt() @Min(0) @Max(100)
  feePercent?: number;

  @ApiPropertyOptional({ example: 50000, description: 'Fee floor in ETB minor units (500 ETB = 50000)' })
  @IsOptional() @Type(() => Number) @IsInt() @Min(0)
  feeMinMinor?: number;

  @ApiPropertyOptional({ example: false })
  @IsOptional() @IsBoolean()
  routeChangeAllowed?: boolean;

  @ApiPropertyOptional({ example: false })
  @IsOptional() @IsBoolean()
  sameDayAllowed?: boolean;

  @ApiPropertyOptional({ example: 15, description: 'Same-day change: % of the leg fare (replaces feePercent)' })
  @IsOptional() @Type(() => Number) @IsInt() @Min(0) @Max(100)
  sameDayFeePercent?: number;

  @ApiPropertyOptional({ example: 25000, description: 'Same-day change: fee floor in ETB minor units' })
  @IsOptional() @Type(() => Number) @IsInt() @Min(0)
  sameDayFeeMinMinor?: number;

  @ApiPropertyOptional({ example: 120, description: 'Changes are refused this many minutes before departure' })
  @IsOptional() @Type(() => Number) @IsInt() @Min(0)
  cutoffMinutes?: number;

  @ApiPropertyOptional({ example: true })
  @IsOptional() @IsBoolean()
  isActive?: boolean;
}

/** Same fields as the update DTO, plus the fare class the new policy attaches to. */
export class CreateReschedulePolicyDto extends UpdateReschedulePolicyDto {
  @ApiProperty({ example: 'coach-type-uuid', description: 'CoachType the policy applies to (one policy per fare class)' })
  @IsString()
  coachTypeId: string;
}

export class RescheduleQuoteDto {
  @ApiPropertyOptional({ example: 1, description: '1 = outbound (default), 2 = return leg of a round trip' })
  @IsOptional() @Type(() => Number) @IsInt() @Min(1) @Max(2)
  leg?: number;

  @ApiProperty({ example: 'schedule-uuid' })
  @IsString() newScheduleId: string;

  @ApiProperty({ example: 'station-uuid' })
  @IsString() newOriginStationId: string;

  @ApiProperty({ example: 'station-uuid' })
  @IsString() newDestinationStationId: string;

  @ApiProperty({ type: [String], description: 'One seat per seated passenger of the leg, in BookingSeat order' })
  @IsArray() @ArrayMinSize(1) @IsString({ each: true })
  newSeatIds: string[];
}

export class CreateRescheduleDto extends RescheduleQuoteDto {
  @ApiProperty({ example: 'hold-uuid', description: 'SeatHold on the new schedule covering newSeatIds (POST /seats/hold)' })
  @IsString() holdId: string;
}