// Smart App City — Formatters utility

export const formatters = {
  temperature: (value: number, unit: string = '°C') => `${value.toFixed(1)}${unit}`,
  humidity: (value: number) => `${value}%`,
  aqi: (value: number) => {
    if (value <= 50) return { label: 'Bon', color: '#2E7D32' };
    if (value <= 100) return { label: 'Modéré', color: '#F57C00' };
    if (value <= 150) return { label: 'Mauvais', color: '#D32F2F' };
    return { label: 'Dangereux', color: '#7B1FA2' };
  },
  noise: (value: number) => {
    if (value <= 40) return { label: 'Silencieux', color: '#2E7D32' };
    if (value <= 55) return { label: 'Normal', color: '#0288D1' };
    if (value <= 70) return { label: 'Bruyant', color: '#F57C00' };
    return { label: 'Très bruyant', color: '#D32F2F' };
  },
  date: (date: string | Date, locale: string = 'fr-FR') => {
    const d = new Date(date);
    return d.toLocaleDateString(locale, {
      day: '2-digit',
      month: '2-digit',
      year: 'numeric',
      hour: '2-digit',
      minute: '2-digit',
    });
  },
  time: (date: string | Date) => {
    const d = new Date(date);
    return d.toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit' });
  },
  relativeTime: (date: string | Date) => {
    const d = new Date(date);
    const now = new Date();
    const diffMs = now.getTime() - d.getTime();
    const diffMins = Math.floor(diffMs / 60000);
    const diffHours = Math.floor(diffMs / 3600000);
    const diffDays = Math.floor(diffMs / 86400000);

    if (diffMins < 1) return "À l'instant";
    if (diffMins < 60) return `Il y a ${diffMins} min`;
    if (diffHours < 24) return `Il y a ${diffHours}h`;
    if (diffDays < 7) return `Il y a ${diffDays}j`;
    return d.toLocaleDateString('fr-FR', { day: '2-digit', month: '2-digit' });
  },
  currency: (value: number, currency: string = 'EUR') =>
    new Intl.NumberFormat('fr-FR', { style: 'currency', currency }).format(value),
};