import { OpenAPIHono, createRoute, z } from "@hono/zod-openapi";
import { env } from "hono/adapter";

import { fetchFromMultipleSources } from "~/libs/fetchFromMultipleSources";
import type { Env } from "~/types/env";
import { EpisodesResponse, EpisodesResponseSchema } from "~/types/episode";
import {
  AniListIdQuerySchema,
  ErrorResponse,
  ErrorResponseSchema,
} from "~/types/schema";

import { getEpisodesFromAnify } from "./anify";

const route = createRoute({
  tags: ["aniplay", "episodes"],
  summary: "Fetch episodes for a title",
  operationId: "fetchEpisodes",
  method: "get",
  path: "/{aniListId}",
  request: {
    params: z.object({ aniListId: AniListIdQuerySchema }),
  },
  responses: {
    200: {
      content: {
        "application/json": {
          schema: EpisodesResponseSchema,
        },
      },
      description: "Returns a list of episodes",
    },
    500: {
      content: {
        "application/json": {
          schema: ErrorResponseSchema,
        },
      },
      description: "Error fetching episodes",
    },
  },
});

const app = new OpenAPIHono<Env>();

export function fetchEpisodesFromAllProviders(
  aniListId: number,
  env: Env,
): Promise<EpisodesResponse[]> {
  return Promise.allSettled([
    import("./aniwatch").then(({ getEpisodesFromAniwatch }) =>
      getEpisodesFromAniwatch(aniListId),
    ),
    getEpisodesFromAnify(env, aniListId),
  ]).then((episodeResults) =>
    episodeResults
      .filter((result) => result.status === "fulfilled")
      .map((result) => result.value)
      .filter((episodes) => !!episodes),
  );
}

export function fetchEpisodes(
  aniListId: number,
  env: Env,
  shouldRetry: boolean = false,
) {
  return fetchFromMultipleSources([
    () =>
      import("./aniwatch").then(({ getEpisodesFromAniwatch }) =>
        getEpisodesFromAniwatch(aniListId, shouldRetry),
      ),
    () => getEpisodesFromAnify(env, aniListId),
    // () =>
    //   import("./consumet").then(({ getEpisodesFromConsumet }) =>
    //     getEpisodesFromConsumet(aniListId),
    //   ),
  ]);
}

app.openapi(route, async (c) => {
  const aniListId = Number(c.req.param("aniListId"));

  const { result, errorOccurred } = await fetchEpisodes(
    aniListId,
    env(c, "workerd"),
  );

  if (errorOccurred || !result) {
    return c.json(ErrorResponse, { status: 500 });
  }

  const { episodes, providerId } = result;
  if (!episodes || episodes.length === 0) {
    return c.json(ErrorResponse, { status: 404 });
  }

  return c.json({
    success: true,
    result: { providerId, episodes },
  });
});

export default app;