From ec840ba4824be45364b560b64b39cd407924e3a6 Mon Sep 17 00:00:00 2001
From: Nick <nlaurie@metafig.com>
Date: Mon, 5 Feb 2024 11:09:53 -0500
Subject: [PATCH] Ability to SkipTables

---
 addons/dexie-export-import/src/export.ts | 9 ++++++---
 addons/dexie-export-import/src/import.ts | 4 ++++
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/addons/dexie-export-import/src/export.ts b/addons/dexie-export-import/src/export.ts
index de89bac81..53e41f867 100644
--- a/addons/dexie-export-import/src/export.ts
+++ b/addons/dexie-export-import/src/export.ts
@@ -5,6 +5,7 @@ import { DexieExportedTable, DexieExportJsonStructure } from './json-structure';
 import { TSON } from './tson';
 
 export interface ExportOptions {
+  skipTables?: string[],
   noTransaction?: boolean;
   numRowsPerChunk?: number;
   prettyJson?: boolean;
@@ -25,8 +26,10 @@ const DEFAULT_ROWS_PER_CHUNK = 2000;
 
 export async function exportDB(db: Dexie, options?: ExportOptions): Promise<Blob> {
   options = options || {};
+  const skipTables = options.skipTables? options.skipTables: []
+  const targetTables = db.tables.filter((x)=> !skipTables.includes(x.name))
   const slices: (string | Blob)[] = [];
-  const tables = db.tables.map(table => ({
+  const tables = targetTables.map(table => ({
     name: table.name,
     schema: getSchemaString(table),
     rowCount: 0
@@ -49,7 +52,7 @@ export async function exportDB(db: Dexie, options?: ExportOptions): Promise<Blob
     completedRows: 0,
     completedTables: 0,
     totalRows: NaN,
-    totalTables: db.tables.length
+    totalTables: tables.length
   };
 
   try {
@@ -66,7 +69,7 @@ export async function exportDB(db: Dexie, options?: ExportOptions): Promise<Blob
 
   async function exportAll() {
     // Count rows:
-    const tablesRowCounts = await Promise.all(db.tables.map(table => table.count()));
+    const tablesRowCounts = await Promise.all(targetTables.map(table => table.count()));
     tablesRowCounts.forEach((rowCount, i) => tables[i].rowCount = rowCount);
     progress.totalRows = tablesRowCounts.reduce((p,c)=>p+c);
 
diff --git a/addons/dexie-export-import/src/import.ts b/addons/dexie-export-import/src/import.ts
index 385e6b074..2fae19a2d 100644
--- a/addons/dexie-export-import/src/import.ts
+++ b/addons/dexie-export-import/src/import.ts
@@ -19,6 +19,7 @@ export interface ImportOptions extends StaticImportOptions {
   acceptChangedPrimaryKey?: boolean;
   overwriteValues?: boolean;
   clearTablesBeforeImport?: boolean;
+  skipTables?: string[],
   noTransaction?: boolean;
   chunkSizeBytes?: number; // Default: DEFAULT_KILOBYTES_PER_CHUNK ( 1MB )
   filter?: (table: string, value: any, key?: any) => boolean;
@@ -68,6 +69,7 @@ export async function importInto(db: Dexie, exportedData: Blob | JsonStream<Dexi
   const readBlobsSynchronously = 'FileReaderSync' in self; // true in workers only.
 
   const dbExport = dbExportFile.data!;
+  const skipTables = options.skipTables? options.skipTables: []
 
   if (!options!.acceptNameDiff && db.name !== dbExport.databaseName)
     throw new Error(`Name differs. Current database name is ${db.name} but export is ${dbExport.databaseName}`);
@@ -91,6 +93,7 @@ export async function importInto(db: Dexie, exportedData: Blob | JsonStream<Dexi
 
   if (options!.clearTablesBeforeImport) {
     for (const table of db.tables) {
+      if(skipTables.includes(table.name) ) continue;
       await table.clear();
     }
   }
@@ -104,6 +107,7 @@ export async function importInto(db: Dexie, exportedData: Blob | JsonStream<Dexi
   async function importAll () {
     do {
       for (const tableExport of dbExport.data) {
+        if(skipTables.includes(tableExport.tableName)) continue;
         if (!tableExport.rows) break; // Need to pull more!
         if (!(tableExport.rows as any).incomplete && tableExport.rows.length === 0)
           continue;