import { IsEmail, IsString, IsOptional, IsEnum, IsNumber, IsDate, IsBoolean, Length, MinLength } from 'class-validator';
import { Type } from 'class-transformer';
import { UserStatus, UserAuthLevel } from '../entities/user.entity';

// JWT Token DTO
export class JwtTokenDto {
    @IsNumber()
    userId!: number;

    @IsString()
    @Length(1, 255)
    username!: string;

    @IsOptional()
    @IsNumber()
    companyId?: number;

    @IsEnum(UserAuthLevel)
    authLevel!: UserAuthLevel;

    @IsEnum(UserStatus)
    status!: UserStatus;
}

// Login Response DTO
export class LoginResponseDto {
    @IsString()
    @Length(1, 255)
    username!: string;

    @IsNumber()
    id!: number;

    @IsOptional()
    @IsNumber()
    companyId?: number;

    @IsEnum(UserAuthLevel)
    authLevel!: UserAuthLevel;

    @IsEnum(UserStatus)
    status!: UserStatus;

    @IsString()
    token!: string;
}

// User Creation DTO
export class CreateUserDto {
    @IsString()
    @Length(1, 255)
    username!: string;

    @IsString()
    @Length(1, 255)
    FirstName!: string;

    @IsString()
    @Length(1, 255)
    LastName!: string;

    @IsEmail()
    @Length(1, 255)
    email!: string;

    @IsString()
    @MinLength(8)
    @Length(1, 255)
    password!: string;

    @IsOptional()
    @IsNumber()
    CompanyId?: number;

    @IsOptional()
    @IsEnum(UserAuthLevel)
    authLevel?: UserAuthLevel;

    @IsOptional()
    @IsEnum(UserStatus)
    status?: UserStatus;
}

// User Update DTO
export class UpdateUserDto {
    @IsOptional()
    @IsString()
    @Length(1, 255)
    username?: string;

    @IsOptional()
    @IsString()
    @Length(1, 255)
    FirstName?: string;

    @IsOptional()
    @IsString()
    @Length(1, 255)
    LastName?: string;

    @IsOptional()
    @IsEmail()
    @Length(1, 255)
    email?: string;

    @IsOptional()
    @IsString()
    @MinLength(8)
    @Length(1, 255)
    password?: string;

    @IsOptional()
    @IsEnum(UserStatus)
    status?: UserStatus;

    @IsOptional()
    @IsEnum(UserAuthLevel)
    authLevel?: UserAuthLevel;

    @IsOptional()
    @IsString()
    @Length(1, 32)
    securityToken?: string;

    @IsOptional()
    @IsDate()
    @Type(() => Date)
    securityTokenExpiry?: Date;

    @IsOptional()
    @IsDate()
    @Type(() => Date)
    premiumExpirationDate?: Date;

    @IsOptional()
    @IsNumber()
    CompanyId?: number;

    @IsOptional()
    @IsBoolean()
    companyRegistered?: boolean;

    @IsOptional()
    @IsDate()
    @Type(() => Date)
    companyRegistrationDate?: Date;
}

// User Request DTO (for queries/filters)
export class UserRequestDto {
    @IsOptional()
    @IsString()
    @Length(1, 26)
    guid?: string;

    @IsOptional()
    @IsString()
    @Length(1, 255)
    username?: string;

    @IsOptional()
    @IsEmail()
    email?: string;

    @IsOptional()
    @IsEnum(UserStatus)
    status?: UserStatus;

    @IsOptional()
    @IsEnum(UserAuthLevel)
    authLevel?: UserAuthLevel;

    @IsOptional()
    @IsNumber()
    CompanyId?: number;

    @IsOptional()
    @IsBoolean()
    companyRegistered?: boolean;

    @IsOptional()
    @IsNumber()
    page?: number;

    @IsOptional()
    @IsNumber()
    limit?: number;
}

// User Response DTO (for API responses)
export class UserResponseDto {
    @IsNumber()
    id!: number;

    @IsString()
    guid!: string;

    @IsString()
    username!: string;

    @IsString()
    FirstName!: string;

    @IsString()
    LastName!: string;

    @IsEmail()
    email!: string;

    @IsDate()
    createdAt!: Date;

    @IsDate()
    updatedAt!: Date;

    @IsEnum(UserStatus)
    status!: UserStatus;

    @IsEnum(UserAuthLevel)
    authLevel!: UserAuthLevel;

    @IsOptional()
    @IsDate()
    premiumExpirationDate?: Date;

    @IsOptional()
    @IsNumber()
    CompanyId?: number;

    @IsBoolean()
    companyRegistered!: boolean;

    @IsOptional()
    @IsDate()
    companyRegistrationDate?: Date;

    // Helper method flags
    @IsBoolean()
    isConfirmed!: boolean;

    @IsBoolean()
    isPremium!: boolean;

    @IsBoolean()
    isAdmin!: boolean;

    @IsBoolean()
    canLogin!: boolean;

    @IsBoolean()
    hasCompany!: boolean;

    @IsBoolean()
    needsCompanyReregistration!: boolean;
}

// User Remove DTO
export class RemoveUserDto {
    @IsString()
    @Length(1, 26)
    guid!: string;

    @IsOptional()
    @IsString()
    reason?: string;

    @IsOptional()
    @IsBoolean()
    hardDelete?: boolean; // true for permanent deletion, false for soft delete
}

// Login Request DTO
export class LoginRequestDto {
    @IsString()
    @Length(1, 255)
    username!: string;

    @IsString()
    @Length(1, 255)
    password!: string;
}

// Password Reset Request DTO
export class PasswordResetRequestDto {
    @IsEmail()
    email!: string;
}

// Password Reset DTO
export class PasswordResetDto {
    @IsString()
    @Length(32, 32)
    token!: string;

    @IsString()
    @MinLength(8)
    @Length(1, 255)
    newPassword!: string;
}

// Email Confirmation DTO
export class EmailConfirmationDto {
    @IsString()
    @Length(32, 32)
    token!: string;
}

// Premium Subscription DTO
export class PremiumSubscriptionDto {
    @IsString()
    @Length(1, 26)
    userGuid!: string;

    @IsNumber()
    months!: number;
}

// Company Registration DTO
export class CompanyRegistrationDto {
    @IsString()
    @Length(1, 26)
    userGuid!: string;

    @IsNumber()
    companyId!: number;
}