import { IsNotEmpty, IsString, IsNumber, IsBoolean, IsOptional, IsArray, IsEnum, ValidateNested, IsObject } from 'class-validator';
import { Type } from 'class-transformer';
import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
import { ClaimWorkflowStep } from 'src/Types&Enums/claim-request-management/claim-workflow-steps.enum';
import { WorkflowStep } from 'src/Types&Enums/blame-request-management/blameWorkflow-steps.enum';
import { Types } from 'mongoose';

// Combined enum for validation
const AllWorkflowSteps = { ...WorkflowStep, ...ClaimWorkflowStep };

export class ClaimStepFieldDto {
  @ApiProperty({ 
    description: 'Unique identifier for the field',
    example: '67fa10c259e15f231a2d1001'
  })
  @IsNotEmpty()
  id: Types.ObjectId;

  @ApiProperty({ 
    description: 'Field name in Farsi',
    example: 'قطعات خارجی'
  })
  @IsNotEmpty()
  @IsString()
  name_fa: string;

  @ApiProperty({ 
    description: 'Field name in English',
    example: 'outerParts'
  })
  @IsNotEmpty()
  @IsString()
  name_en: string;

  @ApiPropertyOptional({ 
    description: 'Field label in Farsi',
    example: 'قطعات خارجی آسیب‌دیده'
  })
  @IsOptional()
  @IsString()
  label_fa?: string;

  @ApiPropertyOptional({ 
    description: 'Field label in English',
    example: 'Damaged Outer Parts'
  })
  @IsOptional()
  @IsString()
  label_en?: string;

  @ApiPropertyOptional({ 
    description: 'Placeholder text in Farsi',
    example: 'قطعات خارجی آسیب‌دیده را انتخاب کنید'
  })
  @IsOptional()
  @IsString()
  placeholder_fa?: string;

  @ApiPropertyOptional({ 
    description: 'Placeholder text in English',
    example: 'Select damaged outer parts'
  })
  @IsOptional()
  @IsString()
  placeholder_en?: string;

  @ApiPropertyOptional({ 
    description: 'Possible values for select/multiselect fields (null for non-select fields)',
    example: null,
    nullable: true,
    default: null
  })
  @IsOptional()
  value?: Object[] | null;

  @ApiProperty({ 
    description: 'Data type of the field',
    example: 'multiselect',
    enum: ['string', 'number', 'boolean', 'date', 'select', 'multiselect', 'file', 'textarea', 'email', 'phone', 'object']
  })
  @IsNotEmpty()
  @IsString()
  dataType: string;

  @ApiPropertyOptional({ 
    description: 'Whether the field is required',
    example: true,
    default: false
  })
  @IsOptional()
  @IsBoolean()
  required?: boolean;

  @ApiPropertyOptional({ 
    description: 'Validation rules for the field',
    example: { minItems: 1, maxItems: 13 }
  })
  @IsOptional()
  @IsObject()
  validation?: Object;

  @ApiPropertyOptional({ 
    description: 'Display order of the field in the form',
    example: 1
  })
  @IsOptional()
  @IsNumber()
  order?: number;

  @ApiPropertyOptional({ 
    description: 'Whether the field is active',
    example: true,
    default: true
  })
  @IsOptional()
  @IsBoolean()
  isActive?: boolean;
}

export class CreateClaimWorkflowStepDto {
  @ApiProperty({ 
    description: 'Unique key identifying the claim workflow step',
    example: 'CLAIM_CREATED',
    enum: AllWorkflowSteps
  })
  @IsNotEmpty()
  @IsEnum(AllWorkflowSteps)
  stepKey: ClaimWorkflowStep | WorkflowStep;

  @ApiProperty({ 
    description: 'Workflow type: CLAIM for claim workflow',
    example: 'CLAIM',
    default: 'CLAIM'
  })
  @IsNotEmpty()
  @IsString()
  type: string;

  @ApiProperty({ 
    description: 'Order number of the step in the claim workflow',
    example: 1
  })
  @IsNotEmpty()
  @IsNumber()
  stepNumber: number;

  @ApiPropertyOptional({ 
    description: 'Whether the step is active',
    example: true,
    default: true
  })
  @IsOptional()
  @IsBoolean()
  isActive?: boolean;

  @ApiProperty({ 
    description: 'Step name in Farsi',
    example: 'ایجاد درخواست خسارت'
  })
  @IsNotEmpty()
  @IsString()
  stepName_fa: string;

  @ApiProperty({ 
    description: 'Step name in English',
    example: 'Create Claim Request'
  })
  @IsNotEmpty()
  @IsString()
  stepName_en: string;

  @ApiPropertyOptional({ 
    description: 'Step description in Farsi',
    example: 'ایجاد درخواست خسارت از پرونده تعیین تقصیر تکمیل شده'
  })
  @IsOptional()
  @IsString()
  description_fa?: string;

  @ApiPropertyOptional({ 
    description: 'Step description in English',
    example: 'Create claim request from completed blame case'
  })
  @IsOptional()
  @IsString()
  description_en?: string;

  @ApiPropertyOptional({ 
    description: 'Category of the step',
    example: 'CLAIM',
    enum: ['CLAIM', 'EXPERT', 'INSURER', 'FINAL']
  })
  @IsOptional()
  @IsString()
  category?: string;

  @ApiPropertyOptional({ 
    description: 'Dynamic fields for this step',
    type: [ClaimStepFieldDto],
    example: []
  })
  @IsOptional()
  @IsArray()
  @ValidateNested({ each: true })
  @Type(() => ClaimStepFieldDto)
  fields?: ClaimStepFieldDto[];

  @ApiPropertyOptional({ 
    description: 'Steps that must be completed before this step',
    example: [],
    enum: AllWorkflowSteps,
    isArray: true
  })
  @IsOptional()
  @IsArray()
  @IsEnum(AllWorkflowSteps, { each: true })
  requiredPreviousSteps?: (ClaimWorkflowStep | WorkflowStep)[];

  @ApiPropertyOptional({ 
    description: 'Possible next steps after completing this step',
    example: ['SELECT_OUTER_PARTS'],
    enum: AllWorkflowSteps,
    isArray: true
  })
  @IsOptional()
  @IsArray()
  @IsEnum(AllWorkflowSteps, { each: true })
  nextPossibleSteps?: (ClaimWorkflowStep | WorkflowStep)[];

  @ApiPropertyOptional({ 
    description: 'Additional metadata for the step',
    example: { icon: 'file-plus', color: '#8B5CF6' }
  })
  @IsOptional()
  @IsObject()
  metadata?: Record<string, any>;

  @ApiPropertyOptional({ 
    description: 'Estimated duration in minutes',
    example: 1
  })
  @IsOptional()
  @IsNumber()
  estimatedDuration?: number;

  @ApiPropertyOptional({ 
    description: 'Roles allowed to access this step',
    example: ['user', 'damage_expert', 'admin']
  })
  @IsOptional()
  @IsArray()
  @IsString({ each: true })
  allowedRoles?: string[];
}