/* Chan web API client helpers */
window.ChanApi = {
  analyze: function(params) {
    const q = new URLSearchParams(params);
    return fetch('/api/analyze?' + q.toString()).then(r => r.json());
  },
  chartMetadata: function() {
    return fetch('/api/chart_metadata').then(r => r.json());
  },
  symbols: function() {
    return fetch('/api/symbols').then(r => r.json());
  },
  macdConfig: function(body) {
    if (body === undefined) return fetch('/api/macd_config').then(r => r.json());
    return fetch('/api/macd_config', {
      method: 'POST',
      headers: {'Content-Type': 'application/json'},
      body: JSON.stringify(body)
    }).then(r => r.json());
  }
};