import { z } from "zod";
export const videoUpscaleSchema = z.object({
  url: z
    .string()
    .url()
    .refine((v) => /^https?:\/\//.test(v)),
  resolution: z.enum(["1080P", "2K", "4K"]),
});
export type VideoUpscaleInput = z.infer<typeof videoUpscaleSchema>;
export function upscaleDimensions(
  width: number,
  height: number,
  resolution: VideoUpscaleInput["resolution"]
) {
  if (![width, height].every((v) => Number.isInteger(v) && v > 0))
    throw Error("视频尺寸无效");
  const [long, short] =
    resolution === "4K"
      ? [3840, 2160]
      : resolution === "2K"
        ? [2560, 1440]
        : [1920, 1080];
  const ratio = Math.min(
    (width >= height ? long : short) / width,
    (width >= height ? short : long) / height
  );
  if (ratio <= 1) throw Error("源视频已达到所选分辨率，请选择更高分辨率");
  if (ratio > 4) throw Error("单次 AI 超分最大 4 倍，请先选择较低目标分辨率");
  return {
    width: Math.floor((width * ratio) / 2) * 2,
    height: Math.floor((height * ratio) / 2) * 2,
  };
}