Initial public release of MDEditor

src/hooks/useFileSystem.ts

@@ -0,0 +1,97 @@
+import { invoke, isTauri } from '@tauri-apps/api/core';
+import { confirm, message, open, save } from '@tauri-apps/plugin-dialog';
+import { readTextFile, writeTextFile } from '@tauri-apps/plugin-fs';
+
+import type { DocumentFileService, OpenResult, SaveResult } from '../lib/documentSession';
+
+function canUseTauriApis(): boolean {
+  return typeof window !== 'undefined' && isTauri();
+}
+
+async function browserSaveFallback(content: string, suggestedName = 'document.md'): Promise<SaveResult> {
+  const blob = new Blob([content], { type: 'text/markdown;charset=utf-8' });
+  const href = URL.createObjectURL(blob);
+  const anchor = document.createElement('a');
+
+  anchor.href = href;
+  anchor.download = suggestedName;
+  anchor.click();
+
+  URL.revokeObjectURL(href);
+
+  return { path: suggestedName };
+}
+
+export function createDocumentFileService(): DocumentFileService {
+  return {
+    async confirmDiscardChanges(): Promise<boolean> {
+      if (!canUseTauriApis()) {
+        return window.confirm('저장하지 않은 변경 사항이 있습니다. 계속 진행할까요?');
+      }
+
+      return confirm('저장하지 않은 변경 사항이 있습니다. 계속 진행할까요?', {
+        title: 'MDEditor',
+        kind: 'warning',
+      });
+    },
+
+    async openFile(): Promise<OpenResult | null> {
+      if (!canUseTauriApis()) {
+        window.alert('브라우저 미리보기에서는 파일 열기를 지원하지 않습니다.');
+        return null;
+      }
+
+      const selected = await open({
+        directory: false,
+        filters: [{ name: 'Markdown', extensions: ['md', 'markdown'] }],
+        multiple: false,
+      });
+
+      if (!selected || Array.isArray(selected)) {
+        return null;
+      }
+
+      const content = await readTextFile(selected);
+      return { path: String(selected), content };
+    },
+
+    async saveFile(content: string, path?: string): Promise<SaveResult | null> {
+      if (!canUseTauriApis()) {
+        return browserSaveFallback(content, path ?? 'document.md');
+      }
+
+      const targetPath =
+        path ??
+        (await save({
+          defaultPath: 'document.md',
+          filters: [{ name: 'Markdown', extensions: ['md'] }],
+        }));
+
+      if (!targetPath) {
+        return null;
+      }
+
+      await writeTextFile(targetPath, content);
+      return { path: String(targetPath) };
+    },
+
+    async exportDocument(inputPath: string, format: 'pdf' | 'docx' | 'hwp'): Promise<void> {
+      if (format !== 'pdf') {
+        throw new Error('Phase 0 only supports PDF export.');
+      }
+
+      const outputPath = inputPath.replace(/\.md$/i, '.pdf');
+
+      if (!canUseTauriApis()) {
+        throw new Error('PDF export is only available in the Tauri desktop app.');
+      }
+
+      await invoke('export_pdf', { inputPath, outputPath });
+
+      await message(`PDF로 내보냈습니다.\n${outputPath}`, {
+        title: 'MDEditor',
+        kind: 'info',
+      });
+    },
+  };
+}