Initial commit: WordPress wp-content (themes, plugins, languages)

- Theme: momentry (custom theme with REST API routes)
- Plugins: code-snippets (contains all API proxies)
- Languages: zh_TW translations
- Excludes: cache, backups, uploads, logs

plugins/code-snippets/js/components/Import/FromFileUpload/hooks/useSnippetSelection.ts

@@ -0,0 +1,45 @@
+import { useState } from 'react'
+import type { ImportableSnippet } from '../../../../hooks/useFileUploadAPI'
+
+export const useSnippetSelection = (availableSnippets: ImportableSnippet[]) => {
+	const [selectedSnippets, setSelectedSnippets] = useState<Set<number | string>>(new Set())
+
+	const handleSnippetToggle = (snippetId: number | string) => {
+		const newSelected = new Set(selectedSnippets)
+		if (newSelected.has(snippetId)) {
+			newSelected.delete(snippetId)
+		} else {
+			newSelected.add(snippetId)
+		}
+		setSelectedSnippets(newSelected)
+	}
+
+	const handleSelectAll = () => {
+		if (selectedSnippets.size === availableSnippets.length) {
+			setSelectedSnippets(new Set())
+		} else {
+			setSelectedSnippets(new Set(availableSnippets.map(snippet => snippet.table_data.id)))
+		}
+	}
+
+	const clearSelection = () => {
+		setSelectedSnippets(new Set())
+	}
+
+	const getSelectedSnippets = () => {
+		return availableSnippets.filter(snippet => 
+			selectedSnippets.has(snippet.table_data.id)
+		)
+	}
+
+	const isAllSelected = selectedSnippets.size === availableSnippets.length && availableSnippets.length > 0
+
+	return {
+		selectedSnippets,
+		handleSnippetToggle,
+		handleSelectAll,
+		clearSelection,
+		getSelectedSnippets,
+		isAllSelected
+	}
+}