61 lines
1.9 KiB
JavaScript
61 lines
1.9 KiB
JavaScript
import cloneDeep from 'lodash/cloneDeep'
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const STORE = 'statuses'
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const dbPromise = new Promise((resolve, reject) => {
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let req = indexedDB.open(STORE, 1)
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req.onerror = reject
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req.onblocked = () => {
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console.log('idb blocked')
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}
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req.onupgradeneeded = () => {
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let db = req.result;
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let oStore = db.createObjectStore(STORE, {
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keyPath: 'id'
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})
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oStore.createIndex('created_at', 'created_at')
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oStore.createIndex('pinafore_id_as_negative_big_int', 'pinafore_id_as_negative_big_int')
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oStore.createIndex('pinafore_id_as_big_int', 'pinafore_id_as_big_int')
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}
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req.onsuccess = () => resolve(req.result)
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})
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function transformStatusForStorage(status) {
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status = cloneDeep(status)
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status.pinafore_id_as_big_int = parseInt(status.id, 10)
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status.pinafore_id_as_negative_big_int = -parseInt(status.id, 10)
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status.pinafore_stale = true
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return status
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}
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export async function getTimelineAfter(max_id = null, limit = 20) {
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const db = await dbPromise
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return await new Promise((resolve, reject) => {
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const tx = db.transaction(STORE, 'readonly')
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const store = tx.objectStore(STORE)
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const index = store.index('pinafore_id_as_negative_big_int')
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let sinceAsNegativeBigInt = max_id === null ? null : -parseInt(max_id, 10)
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let query = sinceAsNegativeBigInt === null ? null : IDBKeyRange.lowerBound(sinceAsNegativeBigInt, false)
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let res
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index.getAll(query, limit).onsuccess = (e) => {
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res = e.target.result
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}
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tx.oncomplete = () => resolve(res)
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tx.onerror = reject
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})
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}
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export async function insertStatuses(statuses) {
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const db = await dbPromise
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return await new Promise((resolve, reject) => {
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const tx = db.transaction(STORE, 'readwrite')
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const store = tx.objectStore(STORE)
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for (let status of statuses) {
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store.put(transformStatusForStorage(status))
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}
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tx.oncomplete = resolve
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tx.onerror = reject
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})
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} |