43 lines
2.3 KiB
TypeScript
43 lines
2.3 KiB
TypeScript
import { IMAGE_UPLOAD_TOO_LARGE_MESSAGE, isImageUploadTooLarge } from "@/lib/image-upload-limits";
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const mimeByExtension: Record<string, string> = {
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jpg: "image/jpeg", jpeg: "image/jpeg", png: "image/png", webp: "image/webp",
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avif: "image/avif", tif: "image/tiff", tiff: "image/tiff", svg: "image/svg+xml",
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heic: "image/heic", heif: "image/heif",
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mp4: "video/mp4", mov: "video/quicktime", webm: "video/webm",
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mp3: "audio/mpeg", m4a: "audio/mp4", wav: "audio/wav", ogg: "audio/ogg", flac: "audio/flac",
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};
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const acceptedTypes = new Set([...Object.values(mimeByExtension), "image/jpg", "image/x-tiff", "audio/mp3", "audio/x-m4a", "audio/x-wav", "audio/webm"]);
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// Finder and some browsers provide no MIME type. Only infer it for known extensions;
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// the upload endpoints still validate/decode the actual file contents.
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export function prepareCanvasMediaFiles(input: File[]) {
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const files: File[] = [], errors: string[] = [];
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for (const file of input) {
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const originalType = file.type.toLowerCase();
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const type = !originalType || originalType === "application/octet-stream"
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? mimeByExtension[file.name.split(".").pop()?.toLowerCase() || ""]
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: originalType;
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if (!type || !acceptedTypes.has(type)) {
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errors.push(`${file.name}：不支持此格式，请拖入图片、MP4/MOV/WebM 视频或音频文件`);
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} else if (!file.size) {
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errors.push(`${file.name}：文件为空，请选择完整素材`);
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} else if (type.startsWith("image/") && isImageUploadTooLarge(file.size)) {
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errors.push(`${file.name}：${IMAGE_UPLOAD_TOO_LARGE_MESSAGE}`);
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} else if (!type.startsWith("image/") && file.size > 125 * 1024 * 1024) {
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errors.push(`${file.name}：音视频不能超过 125 MiB`);
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} else {
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files.push(type === file.type ? file : new File([file], file.name, { type, lastModified: file.lastModified }));
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}
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}
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if (files.length > 10) errors.push("每次最多导入 10 个素材，其余文件请分批拖入");
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return { files: files.slice(0, 10), errors };
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}
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export function canvasMediaType(file: File): "image" | "video" | "audio" {
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if (file.type.startsWith("image/")) return "image";
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if (file.type.startsWith("video/")) return "video";
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if (file.type.startsWith("audio/")) return "audio";
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throw Error(`${file.name}：不支持此素材格式`);
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}
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