import type { Review } from './api/client';

export type ReviewStatus = 'completed' | 'in-progress' | 'dropped';

export type ParsedReview = Omit<Review, 'tags'> & {
  tags: string[];
  normalizedStatus: ReviewStatus;
  coverIsImage: boolean;
  coverUrl: string | null;
  linkUrl: string | null;
  externalLink: boolean;
};

const reviewCoverCatalog: Record<string, string> = {
  '《漫长的季节》': '/review-covers/the-long-season.svg',
  '《十三邀》': '/review-covers/thirteen-invites.svg',
  '《黑神话：悟空》': '/review-covers/black-myth-wukong.svg',
  '《置身事内》': '/review-covers/placed-within.svg',
  '《宇宙探索编辑部》': '/review-covers/journey-to-the-west-editorial.svg',
  '《疲惫生活中的英雄梦想》': '/review-covers/hero-dreams-in-tired-life.svg',
};

export function normalizeReviewStatus(status: string | null | undefined): ReviewStatus {
  const normalized = String(status || '').trim().toLowerCase();

  if (normalized === 'published' || normalized === 'completed' || normalized === 'done') {
    return 'completed';
  }

  if (
    normalized === 'draft' ||
    normalized === 'in-progress' ||
    normalized === 'watching' ||
    normalized === 'reading' ||
    normalized === 'listening'
  ) {
    return 'in-progress';
  }

  if (normalized === 'dropped' || normalized === 'abandoned') {
    return 'dropped';
  }

  return 'completed';
}

export function parseReviewTags(value: string | null | undefined): string[] {
  if (!value) {
    return [];
  }

  try {
    const parsed = JSON.parse(value);
    return Array.isArray(parsed) ? parsed.filter((item): item is string => typeof item === 'string') : [];
  } catch {
    return [];
  }
}

export function isImageCover(cover: string | null | undefined) {
  const normalized = String(cover || '').trim();
  return /^(https?:)?\/\//.test(normalized) || normalized.startsWith('/');
}

export function resolveReviewCover(review: Pick<Review, 'cover' | 'title'>) {
  if (isImageCover(review.cover)) {
    return String(review.cover).trim();
  }

  return reviewCoverCatalog[review.title] || null;
}

export function normalizeLinkUrl(value: string | null | undefined) {
  const trimmed = String(value || '').trim();
  return trimmed ? trimmed : null;
}

export function isExternalLink(value: string | null | undefined) {
  return /^(https?:)?\/\//.test(String(value || '').trim());
}

export function parseReview(review: Review): ParsedReview {
  return {
    ...review,
    tags: parseReviewTags(review.tags),
    normalizedStatus: normalizeReviewStatus(review.status),
    coverIsImage: isImageCover(review.cover),
    coverUrl: resolveReviewCover(review),
    linkUrl: normalizeLinkUrl(review.link_url),
    externalLink: isExternalLink(review.link_url),
  };
}