import fs from "fs";
import { knex } from "../db";
import { TWEET_SNOWFLAKE_REGEX, MD5_REGEX } from "../utils";

export async function integrityCheck(): Promise<void> {
  await noDuplicateTweetIds();
  await noDuplicateTweetMd5s();

  await skinsWithoutFiles();
  await filesWithoutSkins();
  await reviewsWithoutSkins();
  await tweetsHaveIdIfTheyHaveURl();
  // There are still some
  // await noDuplicateIaItems();

  // There are still some
  // await tweetsHaveIds();

  // Not needed regularly
  // await findHashesForTweets();
  console.log("Done.");
}

async function findHashesForTweets(): Promise<void> {
  const todo = JSON.parse(fs.readFileSync("todo.json", "utf8"));
  let other = 0;

  for (const tweet of todo) {
    const match = tweet.text.match(MD5_REGEX);
    if (match) {
      const md5 = match[0];
      if (md5 == null) {
        throw new Error("No md5?");
      }
      await knex("tweets").insert(
        { skin_md5: md5, tweet_id: tweet.id_str },
        []
      );
      continue;
    }
    // console.log({ urls, text: skin.text, id: skin.id_str });

    other++;
  }
  console.log({ other });
}

async function skinsWithoutFiles(): Promise<void> {
  console.log("Checking for skins without files...");
  const result = await knex("skins")
    .leftJoin("files", "skins.md5", "=", "files.skin_md5")
    .where("files.skin_md5", null)
    .select(["md5"]);
  if (result.length > 0) {
    console.warn(`Found ${result.length} skins without files`);
  } else {
    console.log("None found.");
  }
}

async function filesWithoutSkins(): Promise<void> {
  console.log("Checking for files without skins...");
  const result = await knex("files")
    .leftJoin("skins", "skins.md5", "=", "files.skin_md5")
    .where("skins.md5", null)
    .select(["files.skin_md5"]);
  if (result.length > 0) {
    console.warn(`Found ${result.length} files without skins`);
  } else {
    console.log("None found.");
  }
}

async function reviewsWithoutSkins(): Promise<void> {
  console.log("Checking for reviews without skins...");
  const result = await knex("skin_reviews")
    .leftJoin("skins", "skins.md5", "=", "skin_reviews.skin_md5")
    .where("skins.md5", null)
    .select(["skin_reviews.skin_md5"]);
  if (result.length > 0) {
    console.warn(`Found ${result.length} reviews without skins`);
  } else {
    console.log("None found.");
  }
}

async function noDuplicateIaItems(): Promise<void> {
  console.log("Checking for duplicate Internet Archive items...");
  const result = await knex.raw(
    "SELECT identifier, COUNT(*) c FROM ia_items GROUP BY identifier HAVING c > 1;"
  );
  if (result.length > 0) {
    console.warn(
      `Found ${result.length} Internet Archive items with duplicate identifiers.`
    );
  } else {
    console.log("None found.");
  }
}

async function noDuplicateTweetIds(): Promise<void> {
  console.log("Checking for duplicate Tweet ids...");
  const result = await knex.raw(
    "SELECT tweet_id, COUNT(*) c FROM tweets GROUP BY tweet_id HAVING c > 1;"
  );
  if (result.length > 0) {
    console.warn(`Found ${result.length} tweets with duplicate tweet_id.`);
  } else {
    console.log("None found.");
  }
}

async function noDuplicateTweetMd5s(): Promise<void> {
  console.log("Checking for duplicate Tweet md5s...");
  const result = await knex.raw(
    "SELECT skin_md5, COUNT(*) c FROM tweets GROUP BY skin_md5 HAVING c > 1;"
  );
  if (result.length > 0) {
    console.warn(`Found ${result.length} tweets with duplicate skin_md5.`);
  } else {
    console.log("None found.");
  }
}

async function tweetsHaveIds(): Promise<void> {
  console.log("Checking for Tweets with URLs but no ids...");
  const results = await knex.raw(
    "SELECT * FROM tweets WHERE tweet_id IS NULL;"
  );
  if (results.length > 0) {
    for (const row of results) {
      // console.log(row);
    }
  } else {
    console.log("None found.");
  }
}

async function tweetsHaveIdIfTheyHaveURl(): Promise<void> {
  console.log("Checking for Tweets with URLs but no ids...");
  const results = await knex.raw(
    "SELECT * FROM tweets WHERE tweet_id IS NULL AND url IS NOT NULL;"
  );
  if (results.length > 0) {
    for (const row of results) {
      const { id, url } = row;
      const idMatch = url.match(TWEET_SNOWFLAKE_REGEX);
      if (idMatch == null) {
        throw new Error(`Can't extract id from tweet URL: ${url}`);
      }
      await knex("tweets").where({ id }).update({ tweet_id: idMatch[0] }, []);
      console.log(`Updated tweet with url ${url}`);
    }
  } else {
    console.log("None found.");
  }
}