Initial commit

src/utils/filePicker.js

@@ -0,0 +1,57 @@
+export function isAbortError(error) {
+  return error && error.name === 'AbortError'
+}
+
+export function isSavePickerSupported() {
+  return typeof window !== 'undefined' && typeof window.showSaveFilePicker === 'function'
+}
+
+export function isOpenPickerSupported() {
+  return typeof window !== 'undefined' && typeof window.showOpenFilePicker === 'function'
+}
+
+function downloadBlob(blob, filename) {
+  const url = URL.createObjectURL(blob)
+  const link = document.createElement('a')
+  link.href = url
+  link.download = filename
+  document.body.appendChild(link)
+  link.click()
+  document.body.removeChild(link)
+  URL.revokeObjectURL(url)
+}
+
+export async function saveBlob(blob, filename, types) {
+  if (isSavePickerSupported()) {
+    const handle = await window.showSaveFilePicker({
+      suggestedName: filename,
+      types
+    })
+    const writable = await handle.createWritable()
+    await writable.write(blob)
+    await writable.close()
+    return { method: 'picker' }
+  }
+
+  downloadBlob(blob, filename)
+  return { method: 'download' }
+}
+
+export async function openJsonFile() {
+  if (!isOpenPickerSupported()) return null
+
+  const handles = await window.showOpenFilePicker({
+    multiple: false,
+    types: [
+      {
+        description: 'JSON 配置文件',
+        accept: {
+          'application/json': ['.json']
+        }
+      }
+    ]
+  })
+
+  if (!handles.length) return null
+  return handles[0].getFile()
+}