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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | 7x 7x 7x 7x 7x 7x 7x 1x 1x 1x 1x 7x 3x 3x 3x 7x 1x 1x 1x 1x 5x 1x 1x | import { CcState } from "app/codeCharta/codeCharta.model" import { openDB } from "idb" export const DB_NAME = "CodeCharta" export const DB_VERSION = 1 export const CCSTATE_STORE_NAME = "ccstate" export const CCSTATE_PRIMARY_KEY = "id" export const CCSTATE_STATE_ID = 1001 export async function writeCcState(state: CcState) { const database = await createOrOpenCcStateStore() const tx = database.transaction(CCSTATE_STORE_NAME, "readwrite") await tx.store.put({ [CCSTATE_PRIMARY_KEY]: CCSTATE_STATE_ID, state }) await tx.done } export async function readCcState(): Promise<CcState | null> { const database = await createOrOpenCcStateStore() const record = await database.get(CCSTATE_STORE_NAME, CCSTATE_STATE_ID) return record?.state || null } export async function deleteCcState() { const database = await createOrOpenCcStateStore() const tx = database.transaction(CCSTATE_STORE_NAME, "readwrite") await tx.store.delete(CCSTATE_STATE_ID) await tx.done } async function createOrOpenCcStateStore() { return openDB(DB_NAME, DB_VERSION, { upgrade(database) { if (!database.objectStoreNames.contains(CCSTATE_STORE_NAME)) { database.createObjectStore(CCSTATE_STORE_NAME, { keyPath: CCSTATE_PRIMARY_KEY }) } } }) } |