38 lines
1.3 KiB
TypeScript
38 lines
1.3 KiB
TypeScript
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export const ECOMMERCE_SUPPORTED_IMAGE_TYPES = new Set(["image/jpeg", "image/png", "image/webp", "image/gif"]);
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export const ECOMMERCE_MAX_IMAGE_BYTES = 10 * 1024 * 1024;
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export interface EcommerceImageValidationResult {
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accepted: File[];
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rejected: Array<{ name: string; reason: string }>;
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}
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export function validateEcommerceImageFiles(files: File[]): EcommerceImageValidationResult {
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const accepted: File[] = [];
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const rejected: EcommerceImageValidationResult["rejected"] = [];
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files.forEach((file) => {
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if (!ECOMMERCE_SUPPORTED_IMAGE_TYPES.has(file.type)) {
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rejected.push({ name: file.name, reason: "不支持的图片格式" });
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return;
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}
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if (file.size > ECOMMERCE_MAX_IMAGE_BYTES) {
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rejected.push({ name: file.name, reason: "图片超过 10MB" });
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return;
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}
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accepted.push(file);
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});
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return { accepted, rejected };
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}
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export function summarizeRejectedImages(rejected: EcommerceImageValidationResult["rejected"]): string {
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if (!rejected.length) return "";
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const first = rejected[0];
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const suffix = rejected.length > 1 ? ` 等 ${rejected.length} 个文件` : "";
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return `${first.name}${suffix} 已跳过：${first.reason}`;
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}
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export function normalizeEcommerceImageMime(type: string): string {
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return ECOMMERCE_SUPPORTED_IMAGE_TYPES.has(type) ? type : "image/png";
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}
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