import type { ChannelMeta, ProviderId } from './channel.model';
import type { VideoItem } from './video-item.model';

export type ChannelTabId = 'videos' | 'shorts' | 'playlists' | 'live' | 'about';
export type ChannelSort = 'recent' | 'popular';
export type ChannelContentType = 'videos' | 'shorts' | 'playlists' | 'live';

export interface ChannelCapabilities {
  videos: boolean;
  shorts: boolean;
  playlists: boolean;
  live: boolean;
  about: boolean;
  searchInChannel: boolean;
}

export interface ChannelDetail extends ChannelMeta {
  bannerUrl?: string | null;
  description?: string | null;
  videoCount?: number | null;
  viewCount?: number | null;
  createdAt?: string | null;
  links?: { label: string; url: string }[];
  capabilities: ChannelCapabilities;
}

export interface ChannelContentPage<T> {
  items: T[];
  nextPage: number | null;
  total?: number | null;
}

export interface ChannelPlaylist {
  id: string;
  provider: ProviderId;
  title: string;
  thumbnailUrl?: string | null;
  videoCount?: number | null;
  updatedAt?: string | null;
}

export const DEFAULT_CAPABILITIES: Record<ProviderId, ChannelCapabilities> = {
  yt: { videos: true, shorts: true, playlists: true, live: true, about: true, searchInChannel: true },
  dm: { videos: true, shorts: false, playlists: true, live: false, about: true, searchInChannel: true },
  tw: { videos: true, shorts: false, playlists: false, live: true, about: true, searchInChannel: true },
  pt: { videos: true, shorts: false, playlists: true, live: false, about: true, searchInChannel: true },
  od: { videos: true, shorts: false, playlists: false, live: false, about: true, searchInChannel: true },
  ru: { videos: true, shorts: false, playlists: false, live: false, about: true, searchInChannel: true },
};

export function buildChannelDetail(meta: ChannelMeta, extra?: Partial<ChannelDetail>): ChannelDetail {
  return {
    ...meta,
    bannerUrl: extra?.bannerUrl ?? null,
    description: extra?.description ?? null,
    videoCount: extra?.videoCount ?? null,
    viewCount: extra?.viewCount ?? null,
    createdAt: extra?.createdAt ?? null,
    links: extra?.links ?? [],
    capabilities: extra?.capabilities ?? DEFAULT_CAPABILITIES[meta.provider],
  };
}

export type { VideoItem };