export type Activity = {
  spot_id: string; waterbody_slug: string; waterbody: string; fish_slug: string;
  fish: string; x: number; y: number; best_bait: string | null; catches: number;
  unique_players: number; average_weight_g: number; max_weight_g: number;
  last_confirmed_at: string; activity_score: number; confidence_score: number;
  explanation: string; sources: string[];
};

export type PaginatedActivity = {
  items: Activity[];
  total: number;
  limit: number;
  offset: number;
};

export type Spot = { id: string; waterbody_slug: string; waterbody: string; x: number; y: number; description: string | null; catches_24h: number; catches_3d: number; catches_7d: number; top_baits: string[] };
export type Catch = { id: string; fish: string; weight_g: number; bait: string | null; player_name: string | null; caught_at: string | null; reported_at: string; retrieve_method: string | null; retrieve_speed: number | null; source_system: string; source_url: string | null };
export type DictionaryItem = { id: string; slug: string; name_ru: string };
export type OfficialRecord = { id: string; fish: string; weight_g: number; waterbody: string; bait: string | null; player_name: string | null; record_date: string | null; category: string | null; region: string | null; source_url: string | null; source_system: string };
export type PublicObservation = { id: string; source_system: string; source_name: string; source_url: string; fish_name: string; waterbody_name: string; x: number | null; y: number | null; weight_g: number | null; last_seen_at: string; missing_fields: string[]; quality: "incomplete" | "unverified" };
export type ImportRun = { id: string; started_at: string; finished_at: string | null; status: string; source_url: string; rows_seen: number; rows_created: number; rows_updated: number; error_summary: string | null };
export type SourceStatus = { source_system: string; name: string; status: "healthy" | "stale" | "temporarily_limited" | "source_changed" | "waiting" | "disabled"; last_started_at: string | null; last_success_at: string | null; observations: number };

export const spotPath = (item: Pick<Activity, "waterbody_slug" | "x" | "y">) => `/spots/${item.waterbody_slug}-${item.x}x${item.y}`;

export { activityLevel, ago, kg, plural } from "./presentation";

const base = process.env.API_INTERNAL_URL || import.meta.env.API_INTERNAL_URL || "http://localhost:8000";

export class ApiError extends Error {
  constructor(public status: number) { super(`API ${status}`); }
}

export async function api<T>(path: string): Promise<T> {
  const response = await fetch(`${base}${path}`, { signal: AbortSignal.timeout(8000) });
  if (!response.ok) throw new ApiError(response.status);
  return response.json() as Promise<T>;
}