export function formatDate(dateString: string): string {
  const date = new Date(dateString)
  const months = [
    'January',
    'February',
    'March',
    'April',
    'May',
    'June',
    'July',
    'August',
    'September',
    'October',
    'November',
    'December',
  ]

  return `${date.getDate()} ${months[date.getMonth()]} ${date.getFullYear()}`
}

export function formatRelativeDate(dateString: string): string {
  const date = new Date(dateString)
  const now = new Date()
  const diffTime = Math.abs(now.getTime() - date.getTime())
  const diffDays = Math.ceil(diffTime / (1000 * 60 * 60 * 24))

  if (diffDays === 0) return 'today'
  if (diffDays === 1) return 'yesterday'
  if (diffDays < 7) {
    const days = diffDays
    return `${days} day${days > 1 ? 's' : ''} ago`
  }
  if (diffDays < 30) {
    const weeks = Math.floor(diffDays / 7)
    return `${weeks} week${weeks > 1 ? 's' : ''} ago`
  }
  if (diffDays < 365) {
    const months = Math.floor(diffDays / 30)
    return `${months} month${months > 1 ? 's' : ''} ago`
  }
  const years = Math.floor(diffDays / 365)
  return `${years} year${years > 1 ? 's' : ''} ago`
}

export function generateExcerpt(content: string, maxLength = 160): string {
  const text = content
    .replace(/^---[\s\S]*?---/, '')
    .replace(/!\[.*?\]\(.*?\)/g, '')
    .replace(/\[([^\]]+)\]\([^)]+\)/g, '$1')
    .replace(/[#*`]/g, '')
    .trim()

  if (text.length <= maxLength) return text

  const truncated = text.slice(0, maxLength)
  const lastSpace = truncated.lastIndexOf(' ')
  return truncated.slice(0, lastSpace) + '...'
}

export function generateSlug(title: string): string {
  const romanianMap: Record<string, string> = {
    ă: 'a',
    â: 'a',
    î: 'i',
    ș: 's',
    ț: 't',
    Ă: 'a',
    Â: 'a',
    Î: 'i',
    Ș: 's',
    Ț: 't',
  }

  return title
    .split('')
    .map(char => romanianMap[char] || char)
    .join('')
    .toLowerCase()
    .replace(/[^a-z0-9]+/g, '-')
    .replace(/^-+|-+$/g, '')
}

export function cn(...inputs: (string | undefined | null | false)[]): string {
  return inputs.filter(Boolean).join(" ")
}