import dj from 'dayjs'
import Dexie from 'dexie'
import RelativeTime from 'dayjs/plugin/relativeTime'
import Duration from 'dayjs/plugin/duration'

import { checkForErrors, DBValidator } from './validation'

dj.extend(Duration)
dj.extend(RelativeTime)

export const DB = new Dexie('ora')

DB.version(2).stores({
  logs: `++id, host, timestamp`,
  limits: `++id, host`,
})

DB.version(3).stores({
  settings: `key, value`,
})

export function normalizeTimestamp(timestamp) {
  // Normalize every dato to 15 minutes
  const t = dj(timestamp)
  const min = t.minute()
  return t
    .millisecond(0)
    .second(0)
    .minute(min - (min % 15))
    .toDate()
}

export async function insertLog({ timestamp, host, seconds }) {
  const saved = await DB.logs.where({ host, timestamp }).first()
  const data = Object.assign({ host, timestamp, seconds: 0 }, saved)
  data.seconds += seconds
  await DB.logs.put(data)
}

export async function clear() {
  await DB.limits.clear()
  await DB.logs.clear()
}

export async function dump() {
  return {
    limits: await DB.limits.toArray(),
    logs: await DB.logs.toArray(),
  }
}

export async function load(data) {
  if (!checkForErrors(DBValidator, data)) throw new Error('Invalid data')

  await clear()
  await DB.limits.bulkAdd(data.limits)
  await DB.logs.bulkAdd(
    data.logs.map((log) => ({
      ...log,
      timestamp: new Date(log.timestamp),
    }))
  )
}

export async function updateOrSet(table, key, value) {
  // const updated = await table.update(key, value)
  // if(updated === 0) await table.
}