import { Database } from 'bun:sqlite';
import { wordFactorial } from './utils';

// read

export function fetchResource(db: Database, spelling: string) {
  const query = db.query(`
    SELECT 
      spelling,
      ipa,
      frequency,
      type,
      subtype,
      GROUP_CONCAT(c.name, ',') AS category,
    FROM expressions
    JOIN word_categories wc ON wc.word_id = words.id
    JOIN categories c ON c.id = wc.category_id
    WHERE spelling = $spelling
    GROUP BY words.id
    `);
  return query.get({ spelling });
}
export function fetchFrequent(db: Database, count: number, page: number) {
  const offset = (page - 1) * count;
  const query = db.query(`
    SELECT 
      spelling,
      ipa,
      frequency,
      GROUP_CONCAT(c.name, ',') AS category,
    FROM expressions e
    JOIN word_categories wc ON wc.word_id = e.id
    JOIN categories c ON c.id = wc.category_id
    ORDER BY e.frequency DESC
    LIMIT $count
    OFFSET $offset
    `);
  return query.get({ count, offset });
}
export function fetchLessons(db: Database, count: number, page: number) {
  const p = page < 1 ? 1 : page;
  const offset = (p - 1) * count;
  const queryString = `
    SELECT 
      l.id, l.text as ltext, cards.text as ctext, cards.note as cnote, cards.id as cid
    FROM cards_lessons cl
    JOIN lessons l ON l.id = cl.lesson_id
    JOIN cards ON cards.id = cl.card_id
    LIMIT $count
    OFFSET $offset
    `;
  const query = db.query(queryString);
  const res = query.all({ count, offset });
  return res;
}

// SELECT l.id, l.text, cards.text, cards.note FROM cards_lessons cl LEFT JOIN lessons l ON l.id = cl.lesson_id LEFT JOIN cards ON cards.id = cl.card_id ORDER BY l.id ASC LIMIT 20 OFFSET 0;
export function fetchLesson(db: Database, lesson: number) {
  const queryString = `
    SELECT 
      l.id, l.text, cards.text, cards.note, cards.id as cid
    FROM cards_lessons cl
    JOIN lessons l ON l.id = cl.lesson_id
    JOIN cards ON cards.id = lc.card_id
    WHERE l.id = $lesson 
    `;
  const query = db.query(queryString);
  return query.all({ lesson });
}
export function fetchCard(db: Database, cid: number, userid: number) {
  const query = db.query(`
    SELECT 
      l.id, l.text, cards.text, cards.note
    FROM cards_lessons cl
    JOIN lessons l ON l.id = cl.lesson_id
    JOIN cards ON cards.id = lc.card_id
    JOIN attempts a ON a.card_id = cards.id AND a.user_id = $userid 
    WHERE cards.id = $cid
    `);
  return query.all({ cid, userid });
}

// write
export function addLesson(db: Database, text: string) {
  const query = db.query(`
    INSERT 
    INTO lessons(text) 
    VALUES($text)
  `);
  const res = query.run({ text });
  return res.lastInsertRowid;
}
export function addCard(
  db: Database,
  lesson_id: number | bigint | null,
  text: string,
  mnote?: string,
) {
  const note = mnote ? mnote : null;
  const query = db.query(`
    INSERT 
    INTO cards(text, note) 
    VALUES($text, $note)
  `);
  const params = { text, note };
  const res = query.run(params);
  const cid = res.lastInsertRowid;
  const wquery = db.query(`
    INSERT OR IGNORE
    INTO cards_expressions(card_id, expression_id)
    VALUES($cid, (
      SELECT id FROM expressions e
      WHERE e.spelling LIKE $spelling 
    ))
    `);
  const wtr = db.transaction((pairs) => {
    for (const pair of pairs) wquery.run(pair);
  });
  const words = text
    .replace(/[^\w\s]/g, '')
    .replace(/\s+/g, ' ')
    .trim()
    .split(' ');
  const combinations = wordFactorial(words);
  const richWords = combinations.map((spelling) => {
    return { spelling, cid };
  });
  wtr(richWords);
  if (lesson_id) {
    const query = db.query(`
      INSERT INTO cards_lessons(card_id, lesson_id)
      VALUES($cid, $lesson_id)
      `);
    query.run({ lesson_id, cid });
  }
}

export function addUser(db: Database, name: string, creds: string) {
  const query = db.query(`
    INSERT 
    INTO users(name, creds) 
    VALUES($name, $creds)
  `);
  query.run({ $name: name, $creds: creds });
}

export function addWord(
  db: Database,
  spelling: string,
  ipa: string,
  language: string,
  type: string,
  subtype: string | null,
) {
  const queryString = `
  INSERT
  INTO expressions(spelling, ipa, type, subtype, frequency, language_id)
  VALUES($spelling, $ipa, $type, $subtype, 0, (
      SELECT id FROM languages
      WHERE name = $language
  ))
  `;
  const query = db.prepare(queryString);
  const res = query.run({ spelling, ipa, language, type, subtype });
  return res.lastInsertRowid;
}
export function addCat(db: Database, wordId: number | bigint, domain: string) {
  const queryString = `
  INSERT
  INTO word_categories(word_id, category_id)
  VALUES($wordId, (
      SELECT id FROM categories
      WHERE name = $category
  ))
  `;
  const category = domains[domain] || 'unknown';
  const query = db.query(queryString);
  const res = query.run({ wordId, category });
  return res.lastInsertRowid;
}

const domains: Record<string, string> = {
  'adj.all': 'adjective',
  'adj.pert': 'adjective',
  'adj.ppl': 'adjective',
  'adv.all': 'adverb',
  'noun.Tops': '',
  'noun.act': 'abstract',
  'noun.animal': 'animate',
  'noun.artifact': 'inanimate',
  'noun.attribute': 'abstract',
  'noun.body': 'inanimate',
  'noun.cognition': 'abstract',
  'noun.communication': 'abstract',
  'noun.event': 'abstract',
  'noun.feeling': 'abstract',
  'noun.food': 'inanimate',
  'noun.group': 'noun',
  'noun.location': 'spatial',
  'noun.motive': 'abstract',
  'noun.object': 'inanimate',
  'noun.person': 'animate',
  'noun.phenomenon': 'abstract',
  'noun.plant': 'noun',
  'noun.possession': 'noun',
  'noun.process': 'noun',
  'noun.quantity': 'uncountable',
  'noun.relation': 'noun',
  'noun.shape': 'noun',
  'noun.state': 'noun',
  'noun.substance': 'uncountable',
  'noun.time': 'temporal',
  'verb.body': 'verb',
  'verb.change': 'verb',
  'verb.cognition': 'verb',
  'verb.communication': 'verb',
  'verb.competition': 'verb',
  'verb.consumption': 'verb',
  'verb.contact': 'verb',
  'verb.creation': 'verb',
  'verb.emotion': 'mental',
  'verb.motion': 'verb',
  'verb.perception': 'mental',
  'verb.possession': 'verb',
  'verb.social': 'verb',
  'verb.stative': 'verb',
  'verb.weather': 'verb',
};
export function addFrequency(
  db: Database,
  spelling: string,
  frequency: number,
) {
  const queryString = `
  UPDATE expressions
  SET frequency = $frequency
  WHERE expressions.spelling = $spelling
  `;
  const query = db.query(queryString);
  const res = query.run({ spelling, frequency });
  console.log(res, 'added frequency');
}