26 lines
1.4 KiB
TypeScript
26 lines
1.4 KiB
TypeScript
export type ReferenceAccess = "reachable" | "unreachable" | "unknown";
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export async function validateVideoReferences(
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input: unknown,
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probe: (url: string) => Promise<ReferenceAccess>,
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): Promise<{ images: string[]; error?: string; status?: number }> {
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if (input === undefined) return { images: [] };
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if (!Array.isArray(input) || input.length > 8) return { images: [], error: "请提供不超过 8 张参考图", status: 400 };
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const images: string[] = [];
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for (const value of input) {
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try {
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if (typeof value !== "string") throw new Error();
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const parsed = new URL(value.trim());
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if (!["http:", "https:"].includes(parsed.protocol) || parsed.username || parsed.password) throw new Error();
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images.push(value.trim());
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} catch {
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return { images: [], error: "参考图地址无效，请重新上传", status: 400 };
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}
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}
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const checks = await Promise.all([...new Set(images)].map(url => probe(url).catch(() => "unknown" as const)));
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if (checks.includes("unreachable")) return { images: [], error: "参考图片链接已失效或无访问权限，请重新上传", status: 400 };
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if (checks.includes("unknown")) return { images: [], error: "参考图片连接暂时超时或服务繁忙，请重试；尚未提交生成任务", status: 503 };
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// First and last frames are positional; identical URLs must remain two entries.
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return { images };
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}
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