From 6bcc83d92087894546bf6f083c0f780a6994519a Mon Sep 17 00:00:00 2001
From: Jan Prochazka <jan.prochazka@gmail.com>
Date: Wed, 10 Nov 2021 17:23:21 +0100
Subject: [PATCH] excel import - ability to skip header

---
 packages/web/src/forms/FormArgument.svelte        |  2 ++
 plugins/dbgate-plugin-excel/src/backend/reader.js | 10 +++++++++-
 plugins/dbgate-plugin-excel/src/frontend/index.js |  8 ++++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/packages/web/src/forms/FormArgument.svelte b/packages/web/src/forms/FormArgument.svelte
index 853509c6..1fa74f70 100644
--- a/packages/web/src/forms/FormArgument.svelte
+++ b/packages/web/src/forms/FormArgument.svelte
@@ -13,6 +13,8 @@
 
 {#if arg.type == 'text'}
   <FormTextField label={arg.label} {name} defaultValue={arg.default} />
+{:else if arg.type == 'number'}
+  <FormTextField label={arg.label} type="number" {name} defaultValue={arg.default} />
 {:else if arg.type == 'checkbox'}
   <FormCheckboxField label={arg.label} {name} defaultValue={arg.default} />
 {:else if arg.type == 'select'}
diff --git a/plugins/dbgate-plugin-excel/src/backend/reader.js b/plugins/dbgate-plugin-excel/src/backend/reader.js
index 3535e40f..1eadc1eb 100644
--- a/plugins/dbgate-plugin-excel/src/backend/reader.js
+++ b/plugins/dbgate-plugin-excel/src/backend/reader.js
@@ -23,7 +23,7 @@ async function waitForDrain(stream) {
   });
 }
 
-async function reader({ fileName, sheetName, limitRows = undefined }) {
+async function reader({ fileName, sheetName, skipHeaderRows, limitRows = undefined }) {
   const pass = new stream.PassThrough({
     objectMode: true,
     highWaterMark: 100,
@@ -32,10 +32,18 @@ async function reader({ fileName, sheetName, limitRows = undefined }) {
   const workbook = await loadWorkbook(fileName);
   const sheet = workbook.Sheets[sheetName];
 
+  let range = undefined;
+  if (parseInt(skipHeaderRows) > 0) {
+    range = xlsx.utils.decode_range(sheet['!ref']);
+    range.s.r = parseInt(skipHeaderRows);
+  }
+
   const rows = xlsx.utils.sheet_to_json(sheet, {
     header: 1,
+    range,
     blankrows: false,
   });
+
   const header = rows[0];
   const structure = {
     __isStreamHeader: true,
diff --git a/plugins/dbgate-plugin-excel/src/frontend/index.js b/plugins/dbgate-plugin-excel/src/frontend/index.js
index 25ceab8b..8340d0e0 100644
--- a/plugins/dbgate-plugin-excel/src/frontend/index.js
+++ b/plugins/dbgate-plugin-excel/src/frontend/index.js
@@ -42,6 +42,14 @@ const fileFormat = {
       label: 'Create single file',
       direction: 'target',
     },
+    {
+      type: 'number',
+      default: '0',
+      name: 'skipHeaderRows',
+      apiName: 'skipHeaderRows',
+      label: 'Skip header rows',
+      direction: 'source',
+    },
   ],
 
   getDefaultOutputName: (sourceName, values) => {