import { BadRequestException } from "@nestjs/common";
import { BlameRequestType } from "src/Types&Enums/blame-request-management/blameRequestType.enum";
import { parseFanavaranId } from "src/lookups/fanavaran-last-car-policy";

export type FileMakerFanavaranExpertCodes = {
  ThirdPartyClaimExpertId?: string;
  CarBodyClaimExpertId?: string;
};

export type FileReviewerFanavaranExpertCodes = {
  ThirdPartyExpertiseClaim?: string;
  CarBodyExpertiseClaim?: string;
};

export function parseFanavaranExpertId(raw?: string | null): number | null {
  if (raw == null) return null;
  const trimmed = String(raw).trim();
  if (!trimmed) return null;
  return parseFanavaranId(trimmed) ?? parseFanavaranId(Number(trimmed));
}

export function fileMakerStageOneExpertCode(
  fileMaker: FileMakerFanavaranExpertCodes,
  blameType: BlameRequestType,
): string | undefined {
  return blameType === BlameRequestType.CAR_BODY
    ? fileMaker.CarBodyClaimExpertId
    : fileMaker.ThirdPartyClaimExpertId;
}

export function fileReviewerExpertiseExpertCode(
  fileReviewer: FileReviewerFanavaranExpertCodes,
  blameType: BlameRequestType,
): string | undefined {
  return blameType === BlameRequestType.CAR_BODY
    ? fileReviewer.CarBodyExpertiseClaim
    : fileReviewer.ThirdPartyExpertiseClaim;
}

function blameTypeLabel(blameType: BlameRequestType): string {
  return blameType === BlameRequestType.CAR_BODY
    ? "car body (بدنه)"
    : "third party (ثالث)";
}

export function assertFileMakerCanCreateBlameType(
  fileMaker: FileMakerFanavaranExpertCodes,
  blameType: BlameRequestType,
): void {
  const raw = fileMakerStageOneExpertCode(fileMaker, blameType);
  if (parseFanavaranExpertId(raw) != null) {
    return;
  }
  throw new BadRequestException({
    code: "FILE_MAKER_FANAVARAN_EXPERT_CODE_MISSING",
    message: `Your FileMaker profile has no Fanavaran stage-1 claim expert id for ${blameTypeLabel(blameType)} files. You cannot create this file type.`,
  });
}

export function assertFileReviewerCanReviewBlameType(
  fileReviewer: FileReviewerFanavaranExpertCodes,
  blameType: BlameRequestType,
): void {
  const raw = fileReviewerExpertiseExpertCode(fileReviewer, blameType);
  if (parseFanavaranExpertId(raw) != null) {
    return;
  }
  throw new BadRequestException({
    code: "FILE_REVIEWER_FANAVARAN_EXPERT_CODE_MISSING",
    message: `Your FileReviewer profile has no Fanavaran expertise claim expert id for ${blameTypeLabel(blameType)} files. You cannot review this file type.`,
  });
}

export function resolveFileMakerStageOneExpertId(
  fileMaker: FileMakerFanavaranExpertCodes,
  blameType: BlameRequestType,
): number | null {
  return parseFanavaranExpertId(
    fileMakerStageOneExpertCode(fileMaker, blameType),
  );
}

export function resolveFileReviewerExpertiseExpertId(
  fileReviewer: FileReviewerFanavaranExpertCodes,
  blameType: BlameRequestType,
): number | null {
  return parseFanavaranExpertId(
    fileReviewerExpertiseExpertCode(fileReviewer, blameType),
  );
}