Add yaml export (#32)

README.md

@@ -1,6 +1,6 @@
 # BMLT Data Converter
 
-- Converts BMLT data from JSON to CSV, XLSX or KML
+- Converts BMLT data from JSON to CSV, XLSX KML, or YAML
   - Note that export of KML is only supported with GetSearchResults.
 - Use your semantic interface to build query url. You can find your semantic url by visiting the
   [tally](https://tally.bmlt.app/) and hitting Explore on your root server.

package.json

@@ -18,13 +18,15 @@
 		"@sveltejs/kit": "^2.0.0",
 		"@sveltejs/vite-plugin-svelte": "^3.0.0",
 		"@types/eslint": "8.56.0",
+		"@types/js-yaml": "^4.0.9",
 		"@typescript-eslint/eslint-plugin": "^6.0.0",
 		"@typescript-eslint/parser": "^6.0.0",
 		"eslint": "^8.56.0",
 		"eslint-config-prettier": "^9.1.0",
 		"eslint-plugin-svelte": "^2.35.1",
 		"fetch-jsonp": "^1.3.0",
 		"gh-pages": "^6.1.1",
+		"js-yaml": "^4.1.0",
 		"prettier": "^3.1.1",
 		"prettier-plugin-svelte": "^3.1.2",
 		"sass": "^1.71.0",

src/lib/DataConverter.svelte

@@ -1,26 +1,29 @@
 <script lang="ts">
 	import { writable } from 'svelte/store';
-	import { fetchData, exportCSV, exportXLSX, exportKML } from './DataUtils';
+	import { fetchData, exportCSV, exportXLSX, exportKML, exportYAML } from './DataUtils';
 
 	const processing = writable<boolean>(false);
 	const errorMessage = writable<string>('');
 	let query: string = '';
 	let csvDownloadUrl: string = '';
 	let xlsxDownloadUrl: string = '';
 	let kmlDownloadUrl: string = '';
+	let yamlDownloadUrl: string = '';
 
 	async function handleExport() {
 		if (query.trim() === '') return;
 		errorMessage.set('');
 		csvDownloadUrl = '';
 		xlsxDownloadUrl = '';
 		kmlDownloadUrl = '';
+		yamlDownloadUrl = '';
 
 		try {
 			processing.set(true);
 			const data = await fetchData(query);
 			csvDownloadUrl = exportCSV(data);
 			xlsxDownloadUrl = exportXLSX(data);
+			yamlDownloadUrl = exportYAML(data);
 			kmlDownloadUrl = query.includes('GetSearchResults') ? exportKML(data) : '';
 		} catch (error) {
 			errorMessage.set(error instanceof Error ? error.message : 'Failed to export data.');
@@ -50,9 +53,12 @@
 				<a href={xlsxDownloadUrl} class="download-links" download="BMLT_data.xlsx">Download XLSX</a><br />
 			{/if}
 			{#if kmlDownloadUrl}
-				<a href={kmlDownloadUrl} class="download-links" download="BMLT_data.kml">Download KML</a>
+				<a href={kmlDownloadUrl} class="download-links" download="BMLT_data.kml">Download KML</a><br />
 			{/if}
-			<div id="description">Converts BMLT data from JSON to CSV, XLSX or KML</div>
+			{#if yamlDownloadUrl}
+				<a href={yamlDownloadUrl} class="download-links" download="BMLT_data.yaml">Download YAML</a>
+			{/if}
+			<div id="description">Converts BMLT data from JSON to CSV, XLSX, KML or YAML</div>
 		</div>
 		<div id="footer">
 			<a href="https://github.com/bmlt-enabled/bmlt-data-converter/issues" class="footer-link" target="_blank">Issues?</a>

src/lib/DataUtils.ts

@@ -1,5 +1,6 @@
 import fetchJsonp from 'fetch-jsonp';
 import * as XLSX from 'xlsx';
+import * as yaml from 'js-yaml';
 
 interface Meeting {
 	meeting_name: string;
@@ -49,6 +50,13 @@ export function exportCSV(data: any[]): string {
 	return URL.createObjectURL(blob);
 }
 
+export function exportYAML(data: any[]): string {
+	const processedData = processExportData(data);
+	const yamlString = yaml.dump(processedData);
+	const blob = new Blob([yamlString], { type: 'application/x-yaml' });
+	return URL.createObjectURL(blob);
+}
+
 export function exportXLSX(data: any[]): string {
 	const processedData = processExportData(data);
 	const wb = XLSX.utils.book_new();