pinafore/routes/_utils/database/timelines.js

36 lines
1.0 KiB
JavaScript

import { addKnownDb } from './knownDbs'
import { openReqs, databaseCache } from './cache'
export const TIMELINE_STORE = 'statuses'
export function createTimelineDbName(instanceName, timeline) {
return `${instanceName}_timeline_${timeline}`
}
export function getTimelineDatabase(instanceName, timeline) {
let dbName = createTimelineDbName(instanceName, timeline)
if (databaseCache[dbName]) {
return Promise.resolve(databaseCache[dbName])
}
addKnownDb(instanceName, 'timeline', dbName)
databaseCache[dbName] = new Promise((resolve, reject) => {
let req = indexedDB.open(dbName, 1)
openReqs[dbName] = req
req.onerror = reject
req.onblocked = () => {
console.log('idb blocked')
}
req.onupgradeneeded = () => {
let db = req.result;
let oStore = db.createObjectStore(TIMELINE_STORE, {
keyPath: 'id'
})
oStore.createIndex('pinafore_id_as_negative_big_int', 'pinafore_id_as_negative_big_int')
}
req.onsuccess = () => resolve(req.result)
})
return databaseCache[dbName]
}