import { ApiProperty, ApiPropertyOptional } from "@nestjs/swagger";

// ---------------------------------------------------------------------------
// Query helpers
// ---------------------------------------------------------------------------

export type ExpertKindFilter = "all" | "expert" | "damage_expert";

export class InsurerReportQueryDto {
  @ApiPropertyOptional({ description: "Start of date range (ISO string)" })
  from?: string;

  @ApiPropertyOptional({ description: "End of date range (ISO string)" })
  to?: string;

  @ApiPropertyOptional({
    enum: ["all", "expert", "damage_expert"],
    description:
      "Filter by expert kind. `expert` = blame-panel expert; `damage_expert` = claim damage expert; `all` (default) = both.",
  })
  expertKind?: ExpertKindFilter;
}

export class InsurerWorkLogQueryDto extends InsurerReportQueryDto {
  @ApiPropertyOptional({ type: Number, description: "Page number (1-based)" })
  page?: number;

  @ApiPropertyOptional({ type: Number, description: "Items per page" })
  limit?: number;
}

// ---------------------------------------------------------------------------
// Statistics
// ---------------------------------------------------------------------------

export class InsurerStatisticsBreakdownDto {
  @ApiProperty({ description: "Files that have an insurer rating" })
  filesWithInsurerRating: number;

  @ApiProperty({ description: "Files that have a bot rating" })
  filesWithBotRating: number;

  @ApiProperty({ description: "Files that have any user rating" })
  filesWithUserRating: number;

  @ApiProperty({ description: "Files that have an objection" })
  filesWithObjection: number;

  @ApiProperty({ description: "Average insurer rating (0–5)" })
  averageInsurerRating: number;

  @ApiProperty({ description: "Average bot rating (0–5)" })
  averageBotRating: number;
}

export class InsurerStatisticsDto {
  @ApiProperty({
    description:
      "تعداد کل پرونده‌های بررسی‌شده — distinct tenant claim files with at least one expert CHECKED activity.",
  })
  totalFilesReviewed: number;

  @ApiProperty({
    description:
      "رضایت کاربران از روند پرونده — average of progressSpeed + registrationEase + overallEvaluation across rated claim files, normalised to 0–100. Formula: (avg of three dimensions across all rated files / 5) * 100.",
  })
  averageUserRatingPercentage: number;

  @ApiProperty({
    description:
      "پرونده‌های همراه — blame files where expertInitiated === true AND creationMethod === IN_PERSON.",
  })
  inPersonAccompaniedCount: number;

  @ApiProperty({ description: "Claim files created in the current calendar month." })
  filesCreatedThisMonth: number;

  @ApiProperty({ description: "Total claim files scoped to this insurer." })
  totalFiles: number;

  @ApiProperty({
    description:
      "Percentage of total claim files that have any user rating recorded. (NOT a satisfaction metric — do not render as رضایت کاربران.)",
    deprecated: true,
  })
  filesWithUserRatingPercentage: number;

  @ApiProperty({ description: "Percentage of files with an objection." })
  objectionPercentage: number;

  @ApiProperty({ description: "Insurer-to-bot rating ratio (0–100)." })
  insurerToBotRatingPercentage: number;

  @ApiProperty({ type: InsurerStatisticsBreakdownDto })
  breakdown: InsurerStatisticsBreakdownDto;
}

// ---------------------------------------------------------------------------
// Top files
// ---------------------------------------------------------------------------

export class TopFileUserRatingDto {
  @ApiPropertyOptional({ description: "User's free-text comment" })
  comment?: string | null;

  @ApiPropertyOptional({ description: "User's overall evaluation score (0–5)" })
  overallEvaluation?: number | null;
}

export class InsurerTopFileDto {
  @ApiProperty({ description: "Public file ID — use for front-end link مشاهده پرونده" })
  publicId: string;

  @ApiProperty({ description: "ISO creation datetime" })
  createdAt: string;

  @ApiProperty({ description: "Combined insurer + user rating blend (0–5)" })
  combinedScore: number;

  @ApiProperty({ type: TopFileUserRatingDto })
  userRating: TopFileUserRatingDto;
}

// ---------------------------------------------------------------------------
// Top experts
// ---------------------------------------------------------------------------

export class InsurerTopExpertDto {
  @ApiProperty()
  _id: string;

  @ApiProperty()
  fullName: string;

  @ApiProperty({ enum: ["blame", "claim"] })
  expertKind: "blame" | "claim";

  @ApiPropertyOptional({ description: "Overall average combined rating (0–5)" })
  overallAverageRating: number | null;

  @ApiProperty({ description: "Activity stats from expertFileActivity log" })
  requestStats: { totalHandled: number; totalChecked: number };
}

export class InsurerTopExpertsDto {
  @ApiProperty({ type: [InsurerTopExpertDto], description: "Top blame-panel experts" })
  blameExperts: InsurerTopExpertDto[];

  @ApiProperty({ type: [InsurerTopExpertDto], description: "Top damage experts (claim)" })
  claimExperts: InsurerTopExpertDto[];
}

// ---------------------------------------------------------------------------
// Work-log (mirrors reports.dto.ts shapes; exposed from this module for swagger)
// ---------------------------------------------------------------------------

export class InsurerWorkLogEntryDto {
  @ApiProperty()
  expertId: string;

  @ApiProperty()
  fullName: string;

  @ApiProperty({ enum: ["expert", "damage_expert"] })
  expertKind: "expert" | "damage_expert";

  @ApiProperty({ description: "Distinct files in HANDLED state up to cutoff" })
  totalHandled: number;

  @ApiProperty({ description: "Distinct files currently CHECKED but not yet HANDLED" })
  currentlyChecking: number;

  @ApiProperty({
    description:
      "Distinct files with at least one CHECKED event in the reporting window (all-time when no date range given; restricted to from–to otherwise).",
  })
  distinctFilesCheckedInPeriod: number;
}

export class InsurerWorkLogResponseDto {
  @ApiProperty({ type: [InsurerWorkLogEntryDto] })
  experts: InsurerWorkLogEntryDto[];

  @ApiProperty({ description: "Total experts in roster" })
  total: number;
}