import { ctx } from "context";
import { eq, isNull } from "drizzle-orm";
import { decrypt } from "lib/crypto";
import { env } from "lib/env";
import _ from "lodash";
import tables from "schema";

async function getSpotifyToken(): Promise<string> {
  const spotifyTokens = await ctx.db
    .select()
    .from(tables.spotifyTokens)
    .leftJoin(
      tables.spotifyAccounts,
      eq(tables.spotifyAccounts.userId, tables.spotifyTokens.userId)
    )
    .where(eq(tables.spotifyAccounts.isBetaUser, true))
    .execute()
    .then((res) => res.map(({ spotify_tokens }) => spotify_tokens));

  const record =
    spotifyTokens[Math.floor(Math.random() * spotifyTokens.length)];
  const refreshToken = decrypt(record.refreshToken, env.SPOTIFY_ENCRYPTION_KEY);

  const accessToken = await fetch("https://accounts.spotify.com/api/token", {
    method: "POST",
    headers: {
      "Content-Type": "application/x-www-form-urlencoded",
    },
    body: new URLSearchParams({
      grant_type: "refresh_token",
      refresh_token: refreshToken,
      client_id: env.SPOTIFY_CLIENT_ID,
      client_secret: env.SPOTIFY_CLIENT_SECRET,
    }),
  })
    .then((res) => res.json() as Promise<{ access_token: string }>)
    .then((data) => data.access_token);

  return accessToken;
}

async function getGenresAndPicture(artists) {
  for (const artist of artists) {
    do {
      try {
        const token = await getSpotifyToken();
        // search artist by name on spotify
        const result = await fetch(
          `https://api.spotify.com/v1/search?q=${encodeURIComponent(artist.name)}&type=artist&limit=1`,
          {
            headers: {
              Authorization: `Bearer ${token}`,
            },
          }
        )
          .then(
            (res) =>
              res.json() as Promise<{
                artists: {
                  items: Array<{
                    id: string;
                    name: string;
                    genres: string[];
                    images: Array<{ url: string }>;
                  }>;
                };
              }>
          )
          .then(async (data) => _.get(data, "artists.items.0"));

        if (result) {
          console.log(JSON.stringify(result, null, 2), "\n");
          if (result.genres && result.genres.length > 0) {
            await ctx.db
              .update(tables.artists)
              .set({ genres: result.genres })
              .where(eq(tables.artists.id, artist.id))
              .execute();
          }
          // update artist picture if not set
          if (!artist.picture && result.images && result.images.length > 0) {
            await ctx.db
              .update(tables.artists)
              .set({ picture: result.images[0].url })
              .where(eq(tables.artists.id, artist.id))
              .execute();
          }
        }
        break; // exit the retry loop on success
      } catch (error) {
        console.error("Error fetching genres for artist:", artist.name, error);
        // wait for a while before retrying
        await new Promise((resolve) => setTimeout(resolve, 1000));
      }
      // biome-ignore lint/correctness/noConstantCondition: true
    } while (true);

    // sleep for a while to avoid rate limiting
    await new Promise((resolve) => setTimeout(resolve, 1000));
  }
}

const PAGE_SIZE = 1000;

const count = await ctx.db
  .select()
  .from(tables.artists)
  .where(isNull(tables.artists.genres))
  .execute()
  .then((res) => res.length);

for (let offset = 0; offset < count; offset += PAGE_SIZE) {
  const artists = await ctx.db
    .select()
    .from(tables.artists)
    .where(isNull(tables.artists.genres))
    .offset(offset)
    .limit(PAGE_SIZE)
    .execute();

  await getGenresAndPicture(artists);
}

console.log(`Artists without genres: ${count}`);

process.exit(0);