import sqlite3 from 'sqlite3'
import ErrorType from '../error/types.error.js'
import serverConfig from '../configuration/server.config.js'

sqlite3.verbose()

const tableName = 'Histories'

class History {
  constructor(options = {}) {
    if (!options.name || !options.fullDate || !options.itemID || !options.itemName) {
      throw new Error('History has to have a name, a fullDate, an itemID and an itemName')
    }
    this.id = options.id
    this.name = options.name
    this.fullDate = options.fullDate
    this.itemID = options.itemID
    this.itemName = options.itemName
    this.class = options.class
    this.response = options.response
    this.votes = options.votes
    this.instance = options.instance
    this.boss = options.boss
    this.equipLoc = options.equipLoc
    this.note = options.note
  }

  static findAll() {
    return new Promise((resolve, reject) => {
      const db = openDB()
      db.serialize(() => {
        db.all(`SELECT * FROM ${tableName} order by fullDate desc`, (err, histories) => {
          if (err) reject(new Error(ErrorType.TECHNICAL_UNKNOWN))
          else {
            const array = [];
            for (const history of histories) {
              array.push(createHistoryFromDB(history))
            }
            resolve(array);
          }
        })
        closeDB(db)
      })
    })
  }

  static delete(id) {
    return new Promise((resolve, reject) => {
      const db = openDB();
      db.serialize(() => {
        db.run(`DELETE FROM ${tableName} WHERE id = '${id}'`, (err, history) => {
          if (err) reject(new Error(ErrorType.TECHNICAL_UNKNOWN))
          else resolve(history)
        })
      })
      closeDB(db)
    })
  }

  async insert() {
    return new Promise((resolve, reject) => {
      const values = `'${this.name}', ${this.fullDate}, '${this.itemID}', "${this.itemName}", '${this.class}', '${this.response}', '${this.votes}', "${this.instance}", "${this.boss}", "${this.equipLoc}", "${this.note}"`;
      const db = openDB();
      db.serialize(() => {
        db.run(`INSERT INTO ${tableName} (name, fullDate, itemID, itemName, class, response, votes, instance, boss, equipLoc, note) VALUES (${values})`, err => {
          if (err) reject(new Error(ErrorType.TECHNICAL_UNKNOWN))
          else resolve()
        })
      })
      closeDB(db)
    })
  }

  toJson() {
    return {
      id: this.id,
      name: this.name,
      fullDate: this.fullDate,
      itemID: this.itemID,
      itemName: this.itemName,
      class: this.class,
      response: this.response,
      votes: this.votes,
      instance: this.instance,
      boss: this.boss,
      equipLoc: this.equipLoc,
      note: this.note
    }
  }
}

export default History

function openDB() {
  const env = process.env.NODE_ENV || 'development'
  const db = new sqlite3.Database(serverConfig.database[env].path, err => {
    if (err) throw new Error(err)
  })
  db.configure('busyTimeout', 30000)
  return db
}

function closeDB(db) {
  db.close(err => {
    if (err) throw new Error(err)
  })
}

function createHistoryFromDB(dbHistory) {
  return new History({
    id: dbHistory.id,
    name: dbHistory.name,
    fullDate: dbHistory.fullDate,
    itemID: dbHistory.itemID,
    itemName: dbHistory.itemName,
    class: dbHistory.class,
    response: dbHistory.response,
    votes: dbHistory.votes,
    instance: dbHistory.instance,
    boss: dbHistory.boss,
    equipLoc: dbHistory.equipLoc,
    note: dbHistory.note
  })
}