91 lines
2.8 KiB
JavaScript
91 lines
2.8 KiB
JavaScript
import keyval from 'idb-keyval'
|
|
import cloneDeep from 'lodash/cloneDeep'
|
|
import padStart from 'lodash/padStart'
|
|
|
|
const STORE = 'statuses'
|
|
const databaseCache = {}
|
|
|
|
function toPaddedBigInt(id) {
|
|
return padStart(id, 30, '0')
|
|
}
|
|
|
|
function toReversePaddedBigInt(id) {
|
|
let bigInt = toPaddedBigInt(id)
|
|
let res = ''
|
|
for (let i = 0; i < bigInt.length; i++) {
|
|
res += (9 - parseInt(bigInt.charAt(i), 10)).toString(10)
|
|
}
|
|
return res
|
|
}
|
|
|
|
function transformStatusForStorage(status) {
|
|
status = cloneDeep(status)
|
|
status.pinafore_id_as_big_int = toPaddedBigInt(status.id)
|
|
status.pinafore_id_as_negative_big_int = toReversePaddedBigInt(status.id)
|
|
status.pinafore_stale = true
|
|
return status
|
|
}
|
|
|
|
function getDatabase(instanceName, timeline) {
|
|
const key = `${instanceName}_${timeline}`
|
|
if (databaseCache[key]) {
|
|
return Promise.resolve(databaseCache[key])
|
|
}
|
|
|
|
let objectStoreName = `${STORE}_${key}`
|
|
|
|
keyval.get('known_dbs').then(knownDbs => {
|
|
knownDbs = knownDbs || {}
|
|
knownDbs[objectStoreName] = true
|
|
keyval.set('known_dbs', knownDbs)
|
|
})
|
|
|
|
databaseCache[key] = new Promise((resolve, reject) => {
|
|
let req = indexedDB.open(objectStoreName, 1)
|
|
req.onerror = reject
|
|
req.onblocked = () => {
|
|
console.log('idb blocked')
|
|
}
|
|
req.onupgradeneeded = () => {
|
|
let db = req.result;
|
|
let oStore = db.createObjectStore(STORE, {
|
|
keyPath: 'id'
|
|
})
|
|
oStore.createIndex('pinafore_id_as_negative_big_int', 'pinafore_id_as_negative_big_int')
|
|
}
|
|
req.onsuccess = () => resolve(req.result)
|
|
})
|
|
return databaseCache[key]
|
|
}
|
|
|
|
export async function getTimeline(instanceName, timeline, max_id = null, limit = 20) {
|
|
const db = await getDatabase(instanceName, timeline)
|
|
return await new Promise((resolve, reject) => {
|
|
const tx = db.transaction(STORE, 'readonly')
|
|
const store = tx.objectStore(STORE)
|
|
const index = store.index('pinafore_id_as_negative_big_int')
|
|
let sinceAsNegativeBigInt = max_id === null ? null : toReversePaddedBigInt(max_id)
|
|
let query = sinceAsNegativeBigInt === null ? null : IDBKeyRange.lowerBound(sinceAsNegativeBigInt, false)
|
|
|
|
let res
|
|
index.getAll(query, limit).onsuccess = (e) => {
|
|
res = e.target.result
|
|
}
|
|
|
|
tx.oncomplete = () => resolve(res)
|
|
tx.onerror = () => reject(tx.error.name + ' ' + tx.error.message)
|
|
})
|
|
}
|
|
|
|
export async function insertStatuses(instanceName, timeline, statuses) {
|
|
const db = await getDatabase(instanceName, timeline)
|
|
return await new Promise((resolve, reject) => {
|
|
const tx = db.transaction(STORE, 'readwrite')
|
|
const store = tx.objectStore(STORE)
|
|
for (let status of statuses) {
|
|
store.put(transformStatusForStorage(status))
|
|
}
|
|
tx.oncomplete = () => resolve()
|
|
tx.onerror = () => reject(tx.error.name + ' ' + tx.error.message)
|
|
})
|
|
} |