68 lines
2.0 KiB
JavaScript
68 lines
2.0 KiB
JavaScript
const openReqs = {}
|
|
const databaseCache = {}
|
|
|
|
import {
|
|
META_STORE,
|
|
TIMELINE_STORE,
|
|
STATUSES_STORE,
|
|
ACCOUNTS_STORE
|
|
} from './constants'
|
|
|
|
export function getDatabase(instanceName) {
|
|
if (!instanceName) {
|
|
throw new Error('instanceName is undefined in getDatabase()')
|
|
}
|
|
if (databaseCache[instanceName]) {
|
|
return Promise.resolve(databaseCache[instanceName])
|
|
}
|
|
|
|
databaseCache[instanceName] = new Promise((resolve, reject) => {
|
|
let req = indexedDB.open(instanceName, 1)
|
|
openReqs[instanceName] = req
|
|
req.onerror = reject
|
|
req.onblocked = () => {
|
|
console.log('idb blocked')
|
|
}
|
|
req.onupgradeneeded = () => {
|
|
let db = req.result;
|
|
db.createObjectStore(META_STORE, {keyPath: 'key'})
|
|
db.createObjectStore(STATUSES_STORE, {keyPath: 'id'})
|
|
db.createObjectStore(ACCOUNTS_STORE, {keyPath: 'id'})
|
|
let timelineStore = db.createObjectStore(TIMELINE_STORE, {keyPath: 'id'})
|
|
timelineStore.createIndex('statusId', 'statusId')
|
|
}
|
|
req.onsuccess = () => resolve(req.result)
|
|
})
|
|
return databaseCache[instanceName]
|
|
}
|
|
|
|
export async function dbPromise(db, storeName, readOnlyOrReadWrite, cb) {
|
|
return await new Promise((resolve, reject) => {
|
|
const tx = db.transaction(storeName, readOnlyOrReadWrite)
|
|
let store = typeof storeName === 'string' ?
|
|
tx.objectStore(storeName) :
|
|
storeName.map(name => tx.objectStore(name))
|
|
let res
|
|
cb(store, (result) => {
|
|
res = result
|
|
})
|
|
|
|
tx.oncomplete = () => resolve(res)
|
|
tx.onerror = () => reject(tx.error.name + ' ' + tx.error.message)
|
|
})
|
|
}
|
|
|
|
export function deleteDatabase(instanceName) {
|
|
return new Promise((resolve, reject) => {
|
|
// close any open requests
|
|
let openReq = openReqs[instanceName];
|
|
if (openReq && openReq.result) {
|
|
openReq.result.close()
|
|
}
|
|
delete openReqs[instanceName]
|
|
delete databaseCache[instanceName]
|
|
let req = indexedDB.deleteDatabase(instanceName)
|
|
req.onsuccess = () => resolve()
|
|
req.onerror = () => reject(req.error.name + ' ' + req.error.message)
|
|
})
|
|
} |