import { apiError, json, type FetchRoute } from './helpers';
import type { GuildSound } from '@/api/sounds';

/**
 * Маршруты ручек звуков для тестов: список, загрузка, переименование,
 * удаление и просьба сыграть. Состояние живёт в замыкании, поэтому ответы
 * согласованы между запросами (как у настоящего сервера).
 */

export interface SoundRoutesOptions {
  guildId?: string;
  /** Набор звуков «сервера»: его же проверяют тесты. */
  sounds?: GuildSound[];
  /** Ошибка на `POST .../play` (лимит 429, `voice.not_connected` и т.п.). */
  playError?: { code: string; status: number; retryAfterMs?: number };
  /** Ошибка на загрузку звука (`sound.name_taken`, `sounds.limit_reached`). */
  uploadError?: { code: string; status: number };
}

export interface SoundRoutes {
  routes: FetchRoute[];
  sounds: GuildSound[];
  /** Сколько раз просили сыграть звук. */
  playCount: () => number;
}

export function soundRoutes(options: SoundRoutesOptions = {}): SoundRoutes {
  const guildId = options.guildId ?? 'g-1';
  const sounds = [...(options.sounds ?? [])];
  let plays = 0;

  const list = (kind: string | null): GuildSound[] =>
    kind === null ? sounds : sounds.filter((sound) => sound.kind === kind);

  const routes: FetchRoute[] = [
    {
      match: `/guilds/${guildId}/sounds/`,
      method: 'POST',
      response: ({ url }) => {
        plays += 1;
        if (options.playError !== undefined) {
          const { code, status, retryAfterMs } = options.playError;
          return json(
            {
              error: {
                code,
                message: 'error',
                ...(retryAfterMs === undefined ? {} : { retry_after_ms: retryAfterMs }),
              },
            },
            status,
          );
        }
        // `/guilds/{id}/sounds/{sound_id}/play`
        const soundId = url.split('/sounds/')[1]?.split('/')[0] ?? '';
        const known = sounds.find((sound) => sound.id === soundId);
        return known === undefined ? apiError('sounds.not_found', 404) : json({ ok: true });
      },
    },
    {
      match: `/guilds/${guildId}/sounds`,
      method: 'POST',
      response: ({ url }) => {
        if (options.uploadError !== undefined) {
          return apiError(options.uploadError.code, options.uploadError.status);
        }
        const kind = url.includes('kind=ui') ? 'ui' : 'soundboard';
        const created: GuildSound = {
          id: `s-${sounds.length + 1}`,
          name: 'uploaded',
          file_id: '950',
          kind,
          ...(kind === 'ui' ? { event: 'member_join' as const } : {}),
        };
        sounds.push(created);
        return json({ sound: created });
      },
    },
    {
      match: `/guilds/${guildId}/sounds/`,
      method: 'PATCH',
      response: ({ url, body }) => {
        const soundId = url.split('/sounds/')[1]?.split(/[/?]/u)[0] ?? '';
        const patch = (body ?? {}) as Record<string, unknown>;
        const index = sounds.findIndex((sound) => sound.id === soundId);
        const current = sounds[index];
        if (current === undefined) {
          return apiError('sounds.not_found', 404);
        }
        const next: GuildSound = {
          ...current,
          ...(typeof patch['name'] === 'string' ? { name: patch['name'] } : {}),
        };
        sounds[index] = next;
        return json({ sound: next });
      },
    },
    {
      match: `/guilds/${guildId}/sounds/`,
      method: 'DELETE',
      response: ({ url }) => {
        const soundId = url.split('/sounds/')[1]?.split(/[/?]/u)[0] ?? '';
        const index = sounds.findIndex((sound) => sound.id === soundId);
        if (index >= 0) {
          sounds.splice(index, 1);
        }
        return json({ ok: true });
      },
    },
    {
      match: `/guilds/${guildId}/sounds`,
      response: ({ url }) => {
        const kind = url.includes('kind=ui')
          ? 'ui'
          : url.includes('kind=soundboard')
            ? 'soundboard'
            : null;
        return json({ sounds: list(kind) });
      },
    },
  ];

  return { routes, sounds, playCount: () => plays };
}