import { Skill } from '@/types/skills';
import { getSkillPath } from '@/lib/skills-utils';

interface SkillContentResponse {
  content: string;
  relativePath?: string;
}

interface SkillContentError {
  error: string;
}

export async function fetchSkillContent(skill: Skill): Promise<string> {
  const url = getSkillPath(skill);
  const response = await fetch(url);

  if (!response.ok) {
    let message = `Failed to load skill (${response.status})`;
    try {
      const body = (await response.json()) as SkillContentError;
      if (body.error) message = body.error;
    } catch {
      // ignore JSON parse errors
    }
    throw new Error(message);
  }

  const data = (await response.json()) as SkillContentResponse;
  if (!data.content) {
    throw new Error('Skill file is empty');
  }

  return data.content;
}