File size: 5,603 Bytes
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import axios from 'axios';
export interface StagedFileInfo {
attachment_id: string;
filename: string;
original_name: string;
url: string; // blob URL for preview
type: string; // image, record, file, video
}
export function useMediaHandling() {
const stagedAudioUrl = ref<string>('');
const stagedFiles = ref<StagedFileInfo[]>([]);
const mediaCache = ref<Record<string, string>>({});
async function getMediaFile(filename: string): Promise<string> {
if (mediaCache.value[filename]) {
return mediaCache.value[filename];
}
try {
const response = await axios.get('/api/chat/get_file', {
params: { filename },
responseType: 'blob'
});
const blobUrl = URL.createObjectURL(response.data);
mediaCache.value[filename] = blobUrl;
return blobUrl;
} catch (error) {
console.error('Error fetching media file:', error);
return '';
}
}
async function processAndUploadImage(file: File) {
const formData = new FormData();
formData.append('file', file);
try {
const response = await axios.post('/api/chat/post_file', formData, {
headers: {
'Content-Type': 'multipart/form-data'
}
});
const { attachment_id, filename, type } = response.data.data;
stagedFiles.value.push({
attachment_id,
filename,
original_name: file.name,
url: URL.createObjectURL(file),
type
});
} catch (err) {
console.error('Error uploading image:', err);
}
}
async function processAndUploadFile(file: File) {
const formData = new FormData();
formData.append('file', file);
try {
const response = await axios.post('/api/chat/post_file', formData, {
headers: {
'Content-Type': 'multipart/form-data'
}
});
const { attachment_id, filename, type } = response.data.data;
stagedFiles.value.push({
attachment_id,
filename,
original_name: file.name,
url: URL.createObjectURL(file),
type
});
} catch (err) {
console.error('Error uploading file:', err);
}
}
async function handlePaste(event: ClipboardEvent) {
const items = event.clipboardData?.items;
if (!items) return;
for (let i = 0; i < items.length; i++) {
if (items[i].type.indexOf('image') !== -1) {
const file = items[i].getAsFile();
if (file) {
await processAndUploadImage(file);
}
}
}
}
function removeImage(index: number) {
// 找到第 index 个图片类型的文件
let imageCount = 0;
for (let i = 0; i < stagedFiles.value.length; i++) {
if (stagedFiles.value[i].type === 'image') {
if (imageCount === index) {
const fileToRemove = stagedFiles.value[i];
if (fileToRemove.url.startsWith('blob:')) {
URL.revokeObjectURL(fileToRemove.url);
}
stagedFiles.value.splice(i, 1);
return;
}
imageCount++;
}
}
}
function removeAudio() {
stagedAudioUrl.value = '';
}
function removeFile(index: number) {
// 找到第 index 个非图片类型的文件
let fileCount = 0;
for (let i = 0; i < stagedFiles.value.length; i++) {
if (stagedFiles.value[i].type !== 'image') {
if (fileCount === index) {
const fileToRemove = stagedFiles.value[i];
if (fileToRemove.url.startsWith('blob:')) {
URL.revokeObjectURL(fileToRemove.url);
}
stagedFiles.value.splice(i, 1);
return;
}
fileCount++;
}
}
}
function clearStaged() {
stagedAudioUrl.value = '';
// 清理文件的 blob URLs
stagedFiles.value.forEach(file => {
if (file.url.startsWith('blob:')) {
URL.revokeObjectURL(file.url);
}
});
stagedFiles.value = [];
}
function cleanupMediaCache() {
Object.values(mediaCache.value).forEach(url => {
if (url.startsWith('blob:')) {
URL.revokeObjectURL(url);
}
});
mediaCache.value = {};
}
// 计算属性：获取图片的 URL 列表（用于预览）
const stagedImagesUrl = computed(() =>
stagedFiles.value.filter(f => f.type === 'image').map(f => f.url)
);
// 计算属性：获取非图片文件列表
const stagedNonImageFiles = computed(() =>
stagedFiles.value.filter(f => f.type !== 'image')
);
return {
stagedImagesUrl,
stagedAudioUrl,
stagedFiles,
stagedNonImageFiles,
getMediaFile,
processAndUploadImage,
processAndUploadFile,
handlePaste,
removeImage,
removeAudio,
removeFile,
clearStaged,
cleanupMediaCache
};
}
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