import catalog from "@/runtime/nianxx-play/content/seedance-starter/catalog.json";

type LegacyCatalog = typeof catalog;
type LegacyCase = LegacyCatalog["cases"][number];

export type VideoTemplate = {
  id: string;
  title: string;
  mode: string;
  modeLabel: string;
  prompt: string;
  seedanceInstruction?: string;
  coverUrl?: string;
  referenceVideoUrl?: string;
  resultVideoUrl?: string;
  selectable: boolean;
  controls: string[];
  materials: Array<{
    role: string;
    type: "image" | "video" | "audio";
    url: string;
    label?: string;
  }>;
};

export function getVideoTemplates(): VideoTemplate[] {
  return (catalog.cases as LegacyCase[]).map((item) => ({
    id: item.id,
    title: item.title,
    mode: item.mode,
    modeLabel: item.modeLabel,
    prompt: item.prompt,
    seedanceInstruction: typeof item.promptPattern?.seedanceInstruction === "string" ? item.promptPattern.seedanceInstruction : undefined,
    coverUrl: rewriteLegacyUrl(item.display?.coverPublicUrl),
    referenceVideoUrl: rewriteLegacyUrl(item.display?.referenceVideoPublicUrl),
    resultVideoUrl: rewriteLegacyUrl(item.display?.resultVideoPublicUrl),
    selectable: Boolean(item.display?.selectableAsReferenceTemplate),
    controls: item.interactionHooks?.visibleControls || [],
    materials: (item.assets || [])
      .map((asset) => ({
        role: asset.role,
        type: asset.role.includes("video") ? "video" as const : asset.role.includes("audio") ? "audio" as const : "image" as const,
        url: rewriteLegacyUrl(asset.publicUrl) || "",
        label: "promptLabel" in asset ? asset.promptLabel : undefined
      }))
      .filter((asset) => asset.url)
  }));
}

export function getTemplateById(id?: string): VideoTemplate | undefined {
  if (!id) return undefined;
  return getVideoTemplates().find((template) => template.id === id);
}

function rewriteLegacyUrl(url?: string | null): string | undefined {
  if (!url) return undefined;
  if (/^https?:\/\//i.test(url)) return url;
  if (url.startsWith("/seedance-starter-assets/") || url.startsWith("/starter/") || url.startsWith("/planning-cases/")) return url;
  return url;
}