const API_BASE = '/api';

export async function fetchApi(endpoint, options = {}) {
  const url = `${API_BASE}${endpoint}`;
  const response = await fetch(url, {
    headers: {
      'Content-Type': 'application/json',
      ...options.headers,
    },
    ...options,
  });

  if (!response.ok) {
    const error = await response.json().catch(() => ({ error: 'Unknown error' }));
    throw new Error(error.error || `HTTP ${response.status}`);
  }

  return response.json();
}

export const api = {
  // Settings
  getSettings: () => fetchApi('/settings'),
  updateSettings: (settings) => fetchApi('/settings', {
    method: 'PUT',
    body: JSON.stringify(settings),
  }),

  // Scanning
  startScan: (hostname, username = 'root', port = 22) => fetchApi('/scan', {
    method: 'POST',
    body: JSON.stringify({ hostname, username, port }),
  }),
  getScan: (scanId) => fetchApi(`/scan/${scanId}`),

  // Commands
  runCommand: (scanId, command, reason) => fetchApi(`/scan/${scanId}/command`, {
    method: 'POST',
    body: JSON.stringify({ command, reason }),
  }),

  // Approvals
  getPendingApprovals: () => fetchApi('/approvals'),
  approveRequest: (approvalId) => fetchApi(`/approvals/${approvalId}/approve`, {
    method: 'POST',
  }),
  rejectRequest: (approvalId) => fetchApi(`/approvals/${approvalId}/reject`, {
    method: 'POST',
  }),

  // Monitors
  getMonitors: () => fetchApi('/monitors'),
  createDefaultMonitors: (scanId) => fetchApi('/monitors/create-defaults', {
    method: 'POST',
    body: JSON.stringify({ scan_id: scanId }),
  }),
  createSuggestedMonitors: (scanId, monitorIndices) => fetchApi('/monitors/create-suggested', {
    method: 'POST',
    body: JSON.stringify({ scan_id: scanId, monitors: monitorIndices }),
  }),
  deployPushScript: (monitorId, hostname, pushMetric, options = {}) => fetchApi(`/monitors/${monitorId}/deploy-script`, {
    method: 'POST',
    body: JSON.stringify({
      hostname,
      push_metric: pushMetric,
      username: options.username || 'root',
      port: options.port || 22,
      interval_minutes: options.intervalMinutes || 5,
    }),
  }),
  deployAllPushScripts: (monitors) => fetchApi('/monitors/deploy-all-scripts', {
    method: 'POST',
    body: JSON.stringify({ monitors }),
  }),

  // Uptime Kuma
  testKumaConnection: () => fetchApi('/kuma/test'),
  getKumaAuthStatus: () => fetchApi('/kuma/auth'),
  kumaLogin: (username, password, totp) => fetchApi('/kuma/login', {
    method: 'POST',
    body: JSON.stringify({ username, password, totp }),
  }),
  kumaLogout: () => fetchApi('/kuma/logout', { method: 'POST' }),

  // Sync
  triggerSync: () => fetchApi('/sync', { method: 'POST' }),
  syncHost: (hostname) => fetchApi(`/sync/host/${encodeURIComponent(hostname)}`, { method: 'POST' }),

  // Hosts and tracked monitors
  getHosts: () => fetchApi('/hosts'),
  getHostMonitors: (hostname) => fetchApi(`/hosts/${encodeURIComponent(hostname)}/monitors`),
  getTrackedMonitors: () => fetchApi('/monitors/tracked'),
};