// Mythic Oracle — shared fetch wrapper, all API calls

const BASE_URL = '/api';

async function request(path, options = {}) {
  const response = await fetch(`${BASE_URL}${path}`, {
    headers: { 'Content-Type': 'application/json' },
    ...options,
  });

  if (!response.ok) {
    let message = `Request failed: ${response.status}`;
    try {
      const body = await response.json();
      if (body.error) message = body.error;
    } catch {
      // no JSON body on the error response
    }
    throw new Error(message);
  }

  if (response.status === 204) {
    return null;
  }

  return response.json();
}

export function getCampaigns() {
  return request('/campaigns');
}

export function createCampaign(data) {
  return request('/campaigns', { method: 'POST', body: JSON.stringify(data) });
}

export function getCampaign(id) {
  return request(`/campaigns/${id}`);
}

export function updateCampaign(id, data) {
  return request(`/campaigns/${id}`, { method: 'PATCH', body: JSON.stringify(data) });
}

export function deleteCampaign(id) {
  return request(`/campaigns/${id}`, { method: 'DELETE' });
}

export function getSystems() {
  return request('/systems');
}

export function getTable(name) {
  return request(`/tables/${name}`);
}

export async function getThreads(campaignId) {
  const { data } = await request(`/campaigns/${campaignId}/threads`);
  return data;
}

export async function createThread(campaignId, data) {
  const result = await request(`/campaigns/${campaignId}/threads`, {
    method: 'POST',
    body: JSON.stringify(data),
  });
  return result.data;
}

export async function updateThread(campaignId, id, data) {
  const result = await request(`/campaigns/${campaignId}/threads/${id}`, {
    method: 'PUT',
    body: JSON.stringify(data),
  });
  return result.data;
}

export async function deleteThread(campaignId, id) {
  const result = await request(`/campaigns/${campaignId}/threads/${id}`, { method: 'DELETE' });
  return result.data;
}