import type { ExtensionContext } from "@mariozechner/pi-coding-agent";

export interface ResolvedModelMeta {
  provider: string;
  id: string;
}

export function resolveModelMetaFromValue(model: unknown): ResolvedModelMeta {
  if (!model) return { provider: "", id: "" };
  if (typeof model === "string") return { provider: "", id: model };

  return {
    provider: (model as any).provider ?? "",
    id: (model as any).id ?? (model as any).modelId ?? (model as any).name ?? (model as any).model ?? "",
  };
}

export function resolveModelMeta(ctx: ExtensionContext): ResolvedModelMeta {
  return resolveModelMetaFromValue((ctx as any).model);
}

export function resolveModelId(ctx: ExtensionContext): string {
  return resolveModelMeta(ctx).id;
}

export function formatModelRef(model: unknown): string {
  const meta = resolveModelMetaFromValue(model);
  if (!meta.provider) return meta.id;
  if (!meta.id) return meta.provider;
  return `${meta.provider}/${meta.id}`;
}

export function sameModelRef(left: unknown, right: unknown): boolean {
  return formatModelRef(left).toLowerCase() === formatModelRef(right).toLowerCase();
}