SilverBullet pivot to become an offline-first PWA (#403)

2023-05-23 20:53:53 +02:00
parent b256269897
commit 5f484bed57
389 changed files with 4484 additions and 291129 deletions
@@ -0,0 +1,80 @@
+import Dexie, { Table } from "dexie";
+import type { KV, KVStore } from "./kv_store.ts";
+
+export class DexieKVStore implements KVStore {
+  db: Dexie;
+  items: Table<KV, string>;
+  constructor(
+    private dbName: string,
+    private tableName: string,
+    private indexedDB?: any,
+  ) {
+    this.db = new Dexie(dbName, {
+      indexedDB,
+    });
+    this.db.version(1).stores({
+      [tableName]: "key",
+    });
+    this.items = this.db.table<KV, string>(tableName);
+  }
+
+  async del(key: string) {
+    await this.items.delete(key);
+  }
+
+  async deletePrefix(prefix: string) {
+    await this.items.where("key").startsWith(prefix).delete();
+  }
+
+  async deleteAll() {
+    await this.items.clear();
+  }
+
+  async set(key: string, value: any) {
+    await this.items.put({
+      key,
+      value,
+    });
+  }
+
+  async batchSet(kvs: KV[]) {
+    await this.items.bulkPut(
+      kvs.map(({ key, value }) => ({
+        key,
+        value,
+      })),
+    );
+  }
+
+  async batchDelete(keys: string[]) {
+    await this.items.bulkDelete(keys);
+  }
+
+  async batchGet(
+    keys: string[],
+  ): Promise<(any | undefined)[]> {
+    return (await this.items.bulkGet(keys)).map((result) => result?.value);
+  }
+
+  async get(key: string): Promise<any | null> {
+    const result = await this.items.get({ key });
+    return result ? result.value : null;
+  }
+
+  async has(key: string): Promise<boolean> {
+    return await this.items.get({
+      key,
+    }) !== undefined;
+  }
+
+  async queryPrefix(
+    keyPrefix: string,
+  ): Promise<{ key: string; value: any }[]> {
+    const results = await this.items.where("key").startsWith(keyPrefix)
+      .toArray();
+    return results.map((result) => ({
+      key: result.key,
+      value: result.value,
+    }));
+  }
+}
@@ -0,0 +1,59 @@
+export type KV = {
+  key: string;
+  value: any;
+};
+
+/**
+ * An interface to any simple key-value store.
+ */
+export interface KVStore {
+  /**
+   * Deletes the value associated with a given key.
+   */
+  del(key: string): Promise<void>;
+
+  /**
+   * Deletes all keys that start with a specific prefix.
+   */
+  deletePrefix(prefix: string): Promise<void>;
+
+  /**
+   * Deletes all keys in the store.
+   */
+  deleteAll(): Promise<void>;
+
+  /**
+   * Sets the value for a given key.
+   */
+  set(key: string, value: any): Promise<void>;
+
+  /**
+   * Sets the values for a list of key-value pairs.
+   */
+  batchSet(kvs: KV[]): Promise<void>;
+
+  /**
+   * Deletes a list of keys.
+   */
+  batchDelete(keys: string[]): Promise<void>;
+
+  /**
+   * Gets the values for a list of keys.
+   */
+  batchGet(keys: string[]): Promise<(any | undefined)[]>;
+
+  /**
+   * Gets the value for a given key.
+   */
+  get(key: string): Promise<any | null>;
+
+  /**
+   * Checks whether a given key exists in the store.
+   */
+  has(key: string): Promise<boolean>;
+
+  /**
+   * Gets all key-value pairs where the key starts with a specific prefix.
+   */
+  queryPrefix(keyPrefix: string): Promise<{ key: string; value: any }[]>;
+}