aboutsummaryrefslogtreecommitdiffstats
path: root/mascara/src/lib/index-db-controller.js
diff options
context:
space:
mode:
Diffstat (limited to 'mascara/src/lib/index-db-controller.js')
-rw-r--r--mascara/src/lib/index-db-controller.js71
1 files changed, 0 insertions, 71 deletions
diff --git a/mascara/src/lib/index-db-controller.js b/mascara/src/lib/index-db-controller.js
deleted file mode 100644
index 5aded1cbe..000000000
--- a/mascara/src/lib/index-db-controller.js
+++ /dev/null
@@ -1,71 +0,0 @@
-const EventEmitter = require('events')
-module.exports = class IndexDbController extends EventEmitter {
-
- constructor (opts) {
- super()
- global.IDBTransaction = global.IDBTransaction || global.webkitIDBTransaction || global.msIDBTransaction || {READ_WRITE: "readwrite"}; // This line should only be needed if it is needed to support the object's constants for older browsers
- global.IDBKeyRange = global.IDBKeyRange || global.webkitIDBKeyRange || global.msIDBKeyRange
- this.migrations = opts.migrations
- this.key = opts.key
- this.version = opts.version
- this.initialState = opts.initialState
- }
-
- // Opens the database connection and returns a promise
- open () {
- return this.get('dataStore')
- .then((data) => {
- if (!data) {
- return this._add('dataStore', this.initialState)
- .then(() => this.get('dataStore'))
- .then((versionedData) => Promise.resolve(versionedData))
- }
- return Promise.resolve(data)
- })
- }
-
-
- get (key = 'dataStore') {
- return this._request('get', key)
- }
- put (state) {
- return this._request('put', state, 'dataStore')
- }
-
- _add (key = 'dataStore', objStore) {
- return this._request('add', objStore, key)
- }
-
- _request (call, ...args) {
- return new Promise((resolve, reject) => {
- const self = this
- const dbOpenRequest = global.indexedDB.open(this.key, this.version)
-
- dbOpenRequest.addEventListener('upgradeneeded', (event) => {
- this.db = event.target.result
- this.db.createObjectStore('dataStore')
- })
-
- dbOpenRequest.onsuccess = (event) => {
- this.db = dbOpenRequest.result
- this.emit('success')
- const dbTransaction = this.db.transaction('dataStore', 'readwrite')
- const request = dbTransaction.objectStore('dataStore')
- const objRequest = request[call](...args)
- objRequest.addEventListener('success', (event) => {
- return resolve(objRequest.result)
- })
- objRequest.addEventListener('error', (err) => {
- return reject(`IndexDBController - ${call} failed to excute on indexedDB`)
- })
- dbTransaction.addEventListener('complete', (event) => {
- this.emit('complete')
- })
- }
-
- dbOpenRequest.addEventListener('error', (event) => {
- return reject({message: `IndexDBController - open:@${call} failed to excute on indexedDB`, errorEvent: event})
- })
- })
- }
-}