feat(#245): in results list, show where an image/pdf is embedded

* Add an index of embeds for reference in results

* Notes embedding images are now shown in results

* Updated dependencies

* Correctly referencing all embeds

* Updated docs

* Basic embedded feature ok

src/database.ts

@@ -1,12 +1,11 @@
 import Dexie from 'dexie'
-import type MiniSearch from 'minisearch'
 import type { AsPlainObject } from 'minisearch'
 import type { DocumentRef } from './globals'
 import { Notice } from 'obsidian'
 import type OmnisearchPlugin from './main'
 
 export class Database extends Dexie {
-  public static readonly dbVersion = 8
+  public static readonly dbVersion = 9
   searchHistory!: Dexie.Table<{ id?: number; query: string }, number>
   minisearch!: Dexie.Table<
     {
@@ -16,6 +15,7 @@ export class Database extends Dexie {
     },
     string
   >
+  embeds!: Dexie.Table<{ embedded: string; references: string[] }, string>
 
   constructor(private plugin: OmnisearchPlugin) {
     super(Database.getDbName(plugin.app.appId))
@@ -23,6 +23,7 @@ export class Database extends Dexie {
     this.version(Database.dbVersion).stores({
       searchHistory: '++id',
       minisearch: 'date',
+      embeds: 'embedded',
     })
   }
 
@@ -49,17 +50,15 @@ export class Database extends Dexie {
     }
   }
 
-  public async writeMinisearchCache(
-    minisearch: MiniSearch,
-    indexed: Map<string, number>
-  ): Promise<void> {
-    const paths = Array.from(indexed).map(([k, v]) => ({ path: k, mtime: v }))
+  public async writeMinisearchCache(): Promise<void> {
+    const minisearchJson = this.plugin.searchEngine.getSerializedMiniSearch()
+    const paths = this.plugin.searchEngine.getSerializedIndexedDocuments()
     const database = this.plugin.database
     await database.minisearch.clear()
     await database.minisearch.add({
       date: new Date().toISOString(),
       paths,
-      data: minisearch.toJSON(),
+      data: minisearchJson,
     })
     console.log('Omnisearch - Search cache written')
   }
@@ -85,7 +84,8 @@ export class Database extends Dexie {
   }
 
   public async clearCache() {
-    new Notice('Omnisearch - Cache cleared. Please restart Obsidian.')
     await this.minisearch.clear()
+    await this.embeds.clear()
+    new Notice('Omnisearch - Cache cleared. Please restart Obsidian.')
   }
 }