import type { IRawVideoData, IVideoData, ISceneGroup, ITimelineGroup } from '../../../types';

// «locations» → «Locations», «living_room» → «Living room».
const humanize = (value?: string | null): string => {
  const text = (value ?? '').replace(/_/g, ' ').trim();
  return text ? text.charAt(0).toUpperCase() + text.slice(1) : text;
};

// timelines_groups ({ name, actions:[{ duration?, title }] }) → sceneGroups ({ id, title, scenes:[{ start, title }] }).
const cleanTimelineGroups = (raw: ITimelineGroup[] | null): ISceneGroup[] | null => {
  if (!Array.isArray(raw)) return null;

  const groups = raw
    .filter((group) => Array.isArray(group?.actions) && group.actions.length > 0)
    .map((group) => ({
      id: group.name || '',
      title: humanize(group.title),
      scenes: group.actions
        .filter((action) => action?.title)
        .map((action) => ({
          start: Number(action.duration) || 0,
          title: humanize(action.title),
        })),
    }))
    .filter((group) => group.scenes.length > 0);

  return groups.length ? groups : null;
};

// hotspots (string[]) → number[] (значения кривой популярности по корзинам).
const cleanHotspots = (raw: string[] | null): number[] | null => {
  if (!Array.isArray(raw)) return null;

  const values = raw.map(Number).filter((value) => Number.isFinite(value));
  return values.length ? values : null;
};

/** Нормализует сырые данные видео к типу IVideoData. */
export const cleanVideoData = (data: IRawVideoData): IVideoData => ({
  guid: data.guid || '',
  md5: data.md5 || '',
  duration: data.duration || 0,
  title: data.title || '',
  header: data.header || '',
  views: data.views || 0,
  likes: data.likes || 0,
  id: data.id || '',
  tags: data.tags || [],
  models: data.models || [],
  categories: data.categories || [],
  actions: data.actions || null,
  channelName: data.channel?.name || '',
  channelAvatar: data.channel?.avatar_url || '',
  url: data.url || '',
  previewUrl: data.preview_url || '',
  thumbUrls: data.thumb_urls ? {
    webp: data.thumb_urls.webp,
  } : undefined,
  vttUrl: data.vtt_url || '',
  vttSpriteUrl: data.vtt_sprite_url || '',
  created: data.created || 0,
  videoUrl: data.video_url || '',
  isDeleted: data.is_deleted || false,
  thumbNum: data.thumb_number || 0,
  description: data.description || '',
  dislikes: data.dislikes || 0,
  hotspots: cleanHotspots(data.hotspots),
  timelinesGroups: cleanTimelineGroups(data.timelines_groups),
  isCanonical: data.is_canonical || false,
});