import { ElMessage } from "element-plus";
import {
  clientRuntime,
  openFile,
  pickFiles,
  saveFile,
  type FileOutput,
  type FilePickerOptions,
  type SaveFileResult,
} from "../runtime";

const selectedFilesMessage = (count: number) => (count > 1 ? `已选择 ${count} 个文件` : "已选择 1 个文件");

export const pickFilesWithFeedback = async (options: FilePickerOptions = {}): Promise<File[]> => {
  const files = await pickFiles(options);
  if (files.length) {
    ElMessage.success(selectedFilesMessage(files.length));
  }
  return files;
};

export const saveFileWithFeedback = async (output: FileOutput): Promise<SaveFileResult> => {
  const result = await saveFile(output);
  if (result === "cancelled") {
    ElMessage.info("已取消保存文件");
    return result;
  }
  ElMessage.success(clientRuntime.capabilities().nativeFiles ? "文件已保存" : "文件下载已开始");
  return result;
};

export const openFileWithFeedback = async (output: FileOutput): Promise<void> => {
  await openFile(output);
  ElMessage.success("文件已打开");
};