// API client for the Decidron network simulator.
//
// Defaults to relative URLs so a production build served by the FastAPI
// container hits the same origin. For CRA dev (`npm start` on :3000),
// set REACT_APP_API_URL=http://localhost:7860 in frontend/.env.development.
const API_BASE = process.env.REACT_APP_API_URL !== undefined
  ? process.env.REACT_APP_API_URL
  : '';

async function jsonFetch(path, options = {}) {
  const resp = await fetch(`${API_BASE}${path}`, {
    headers: { 'Content-Type': 'application/json' },
    cache: 'no-store',
    ...options,
  });
  if (!resp.ok) {
    const err = await resp.json().catch(() => ({ detail: resp.statusText }));
    throw new Error(err.detail || `Request failed: ${resp.status}`);
  }
  return resp.json();
}

export function getNetwork() {
  return jsonFetch('/api/decidron/network');
}

export function getCommands() {
  return jsonFetch('/api/decidron/commands');
}

export function createCommand(command) {
  return jsonFetch('/api/decidron/commands', {
    method: 'POST',
    body: JSON.stringify(command),
  });
}

export function deleteCommand(name) {
  return jsonFetch(`/api/decidron/commands/${encodeURIComponent(name)}`, {
    method: 'DELETE',
  });
}

export function submitSensorInput(channel, value) {
  return jsonFetch('/api/decidron/sensors/input', {
    method: 'POST',
    body: JSON.stringify({ channel, value }),
  });
}

export function runSimulation(inputs = null) {
  return jsonFetch('/api/decidron/run', {
    method: 'POST',
    body: JSON.stringify(inputs ? { inputs } : {}),
  });
}

export function getStats() {
  return jsonFetch('/api/decidron/stats');
}

export function getHistory() {
  return jsonFetch('/api/decidron/history');
}

export function resetSimulation() {
  return jsonFetch('/api/decidron/reset', { method: 'POST' });
}