siftlode/frontend/src/lib/api.ts

import { notify } from "./notifications";

export interface Me {
  id: number;
  email: string;
  display_name: string | null;
  avatar_url: string | null;
  role: string;
  preferences: Record<string, any>;
}

export interface Tag {
  id: number;
  name: string;
  color: string | null;
  category: string;
  system: boolean;
  channel_count: number;
}

export interface Video {
  id: string;
  title: string | null;
  channel_id: string;
  channel_title: string | null;
  channel_thumbnail: string | null;
  channel_url: string;
  published_at: string | null;
  thumbnail_url: string | null;
  duration_seconds: number | null;
  view_count: number | null;
  is_short: boolean;
  live_status: string;
  status: string;
  watch_url: string;
}

export interface FeedResponse {
  items: Video[];
  has_more: boolean;
  offset: number;
  limit: number;
}

export interface FeedFilters {
  tags: number[];
  tagMode: "or" | "and";
  q: string;
  sort: string;
  includeNormal: boolean;
  includeShorts: boolean;
  includeLive: boolean;
  show: string;
  channelId?: string;
  channelName?: string;
  maxAgeDays?: number;
  minDuration?: number;
  maxDuration?: number;
  dateFrom?: string;
  dateTo?: string;
}

class HttpError extends Error {
  status: number;
  constructor(status: number) {
    super(`HTTP ${status}`);
    this.status = status;
  }
}

// Collapse bursts of connection failures (e.g. while the server restarts) into a
// single notification rather than one per failed request.
let lastErrorNotifiedAt = 0;
function notifyErrorThrottled(title: string, message: string): void {
  const now = Date.now();
  if (now - lastErrorNotifiedAt < 30_000) return;
  lastErrorNotifiedAt = now;
  notify({ level: "error", title, message });
}

async function req(url: string, opts: RequestInit = {}): Promise<any> {
  const method = opts.method ?? "GET";
  let r: Response;
  try {
    r = await fetch(url, {
      credentials: "include",
      headers: { "Content-Type": "application/json" },
      ...opts,
    });
  } catch (e) {
    notifyErrorThrottled(
      "Connection lost",
      "Couldn't reach the server — it may be restarting. This will clear once it's back."
    );
    throw e;
  }
  if (!r.ok) {
    // Server faults are worth surfacing; 401/403/404 etc. are handled by callers.
    if (r.status >= 500) {
      notifyErrorThrottled(`Server error ${r.status}`, `${method} ${url}`);
    }
    throw new HttpError(r.status);
  }
  return r.status === 204 ? null : r.json();
}

function feedQuery(f: FeedFilters, offset: number, limit: number): string {
  const p = new URLSearchParams();
  f.tags.forEach((t) => p.append("tags", String(t)));
  p.set("tag_mode", f.tagMode);
  if (f.q) p.set("q", f.q);
  p.set("sort", f.sort);
  p.set("show_normal", String(f.includeNormal));
  p.set("include_shorts", String(f.includeShorts));
  p.set("include_live", String(f.includeLive));
  p.set("show", f.show);
  if (f.channelId) p.set("channel_id", f.channelId);
  if (f.maxAgeDays) p.set("max_age_days", String(f.maxAgeDays));
  if (f.dateFrom) p.set("published_after", f.dateFrom);
  if (f.dateTo) p.set("published_before", f.dateTo);
  if (f.minDuration != null) p.set("min_duration", String(f.minDuration));
  if (f.maxDuration != null) p.set("max_duration", String(f.maxDuration));
  p.set("offset", String(offset));
  p.set("limit", String(limit));
  return p.toString();
}

export interface SyncStatus {
  subscriptions: number;
  channels_total: number;
  channels_backfilling: number;
  videos_total: number;
  pending_enrich: number;
  quota_used_today: number;
  quota_remaining_today: number;
  paused: boolean;
  is_admin: boolean;
}

export interface MyStatus {
  channels_total: number;
  channels_details_synced: number;
  channels_recent_synced: number;
  channels_deep_done: number;
  channels_recent_pending: number;
  channels_deep_pending: number;
  my_videos: number;
  quota_used_today: number;
  quota_remaining_today: number;
  paused: boolean;
}

export interface ManagedChannel {
  id: string;
  title: string | null;
  handle: string | null;
  thumbnail_url: string | null;
  subscriber_count: number | null;
  video_count: number | null;
  stored_videos: number;
  priority: number;
  hidden: boolean;
  tag_ids: number[];
  details_synced: boolean;
  recent_synced: boolean;
  backfill_done: boolean;
}

export const api = {
  me: (): Promise<Me> => req("/api/me"),
  tags: (): Promise<Tag[]> => req("/api/tags"),
  status: (): Promise<SyncStatus> => req("/api/sync/status"),
  feed: (f: FeedFilters, offset: number, limit: number): Promise<FeedResponse> =>
    req(`/api/feed?${feedQuery(f, offset, limit)}`),
  feedCount: (f: FeedFilters): Promise<{ count: number }> =>
    req(`/api/feed/count?${feedQuery(f, 0, 0)}`),
  setState: (id: string, status: string) =>
    req(`/api/videos/${id}/state`, { method: "POST", body: JSON.stringify({ status }) }),
  pauseSync: () => req("/api/sync/pause", { method: "POST" }),
  resumeSync: () => req("/api/sync/resume", { method: "POST" }),
  savePrefs: (p: Record<string, any>) =>
    req("/api/me/preferences", { method: "PUT", body: JSON.stringify(p) }),

  // --- channel manager ---
  myStatus: (): Promise<MyStatus> => req("/api/sync/my-status"),
  channels: (): Promise<ManagedChannel[]> => req("/api/channels"),
  updateChannel: (id: string, patch: { priority?: number; hidden?: boolean }) =>
    req(`/api/channels/${id}`, { method: "PATCH", body: JSON.stringify(patch) }),
  attachChannelTag: (id: string, tagId: number) =>
    req(`/api/channels/${id}/tags`, { method: "POST", body: JSON.stringify({ tag_id: tagId }) }),
  detachChannelTag: (id: string, tagId: number) =>
    req(`/api/channels/${id}/tags/${tagId}`, { method: "DELETE" }),
  syncSubscriptions: () => req("/api/sync/subscriptions", { method: "POST" }),

  // --- user tags ---
  createTag: (t: { name: string; color?: string; category?: string }) =>
    req("/api/tags", { method: "POST", body: JSON.stringify(t) }),
  updateTag: (id: number, patch: { name?: string; color?: string }) =>
    req(`/api/tags/${id}`, { method: "PATCH", body: JSON.stringify(patch) }),
  deleteTag: (id: number) => req(`/api/tags/${id}`, { method: "DELETE" }),
};

export { HttpError };