129 lines
4.0 KiB
TypeScript
129 lines
4.0 KiB
TypeScript
import { fetchApi } from "@/lib/server-api-util";
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import { Message } from "@/types/ask";
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import * as FileSystem from 'expo-file-system';
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import * as MediaLibrary from 'expo-media-library';
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import { TFunction } from "i18next";
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import { useCallback } from "react";
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import { Alert } from 'react-native';
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// 实现一个函数，从两个数组中轮流插入新数组
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export const mergeArrays = (arr1: any[], arr2: any[]) => {
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const result: any[] = [];
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const maxLength = Math.max(arr1.length, arr2.length);
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for (let i = 0; i < maxLength; i++) {
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if (i < arr1.length) result.push(arr1[i]);
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if (i < arr2.length) result.push(arr2[i]);
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}
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return result;
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};
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// 创建新对话并获取消息
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export const createNewConversation = useCallback(async (user_text: string) => {
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const data = await fetchApi<string>("/chat/new", {
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method: "POST",
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});
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return data
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}, []);
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// 获取对话信息
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export const getConversation = async ({
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session_id,
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user_text,
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material_ids
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}: {
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session_id: string,
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user_text: string,
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material_ids: string[]
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}): Promise<Message | undefined> => {
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// 获取对话信息必须要有对话id
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if (!session_id) return undefined;
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try {
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const response = await fetchApi<Message>(`/chat`, {
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method: "POST",
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body: JSON.stringify({
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session_id,
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user_text,
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material_ids
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})
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});
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return response;
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} catch (error) {
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// console.error('Error in getConversation:', error);
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return undefined;
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}
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};
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// 图片 视频 保存到本地
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export const saveMediaToGallery = async (mediaUrl: string, t: TFunction) => {
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// 声明 fileUri 变量以便在 finally 块中使用
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let fileUri: string | null = null;
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try {
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// 首先请求权限
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const { status } = await MediaLibrary.requestPermissionsAsync();
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if (status !== 'granted') {
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Alert.alert('需要相册权限', '请允许应用访问相册以保存媒体文件');
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return false;
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}
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// 获取文件扩展名
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const fileExtension = mediaUrl.split('.').pop()?.toLowerCase() || 'mp4';
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const isVideo = ['mp4', 'mov', 'avi', 'mkv'].includes(fileExtension);
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const fileName = `temp_${Date.now()}.${fileExtension}`;
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fileUri = `${FileSystem.documentDirectory}${fileName}`;
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// 下载文件
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console.log('开始下载文件:', mediaUrl);
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const downloadResumable = FileSystem.createDownloadResumable(
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mediaUrl,
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fileUri,
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{},
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(downloadProgress) => {
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const progress = downloadProgress.totalBytesWritten / (downloadProgress.totalBytesExpectedToWrite || 1);
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console.log(`下载进度: ${Math.round(progress * 100)}%`);
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}
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);
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const downloadResult = await downloadResumable.downloadAsync();
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if (!downloadResult) {
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throw new Error('下载失败: 下载被取消或发生错误');
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}
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const { uri } = downloadResult;
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console.log('文件下载完成，准备保存到相册:', uri);
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// 保存到相册
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const asset = await MediaLibrary.createAssetAsync(uri);
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await MediaLibrary.createAlbumAsync(
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'Memowake',
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asset,
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false
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);
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Alert.alert(
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'保存成功',
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isVideo ? '视频已保存到相册' : '图片已保存到相册'
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);
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return true;
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} catch (error) {
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console.error('保存失败:', error);
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Alert.alert(
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'保存失败',
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error instanceof Error ? error.message : '保存媒体文件时出错，请重试'
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);
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return false;
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} finally {
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// 清理临时文件
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try {
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if (fileUri) {
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await FileSystem.deleteAsync(fileUri, { idempotent: true }).catch(console.warn);
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}
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} catch (cleanupError) {
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console.warn('清理临时文件时出错:', cleanupError);
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}
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}
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}; |