# Ruby To-Do List Application - Application Helper
# Created by: Molla Samser (help@rskworld.in, +91 93305 39277)
# Address: Nutanhat, Mongolkote, Purba Burdwan, West Bengal, India, 713147
# Year: 2026

module ApplicationHelper
  # Format datetime for display
  def format_datetime(datetime)
    datetime.strftime("%B %d, %Y at %I:%M %p") if datetime.present?
  end

  # Format date for display
  def format_date(date)
    date.strftime("%B %d, %Y") if date.present?
  end

  # Check if date is overdue
  def overdue?(date)
    date.present? && date < Date.current
  end

  # Check if date is due today
  def due_today?(date)
    date.present? && date == Date.current
  end

  # Get CSS classes for priority badges
  def priority_badge_classes(priority)
    base_classes = "badge"
    case priority
    when 1
      "#{base_classes} bg-success"
    when 2
      "#{base_classes} bg-warning text-dark"
    when 3
      "#{base_classes} bg-danger"
    else
      "#{base_classes} bg-secondary"
    end
  end

  # Get CSS classes for status badges
  def status_badge_classes(completed)
    completed ? "badge bg-success" : "badge bg-warning text-dark"
  end

  # Format file size
  def format_file_size(bytes)
    return "0 B" if bytes.zero?

    units = ['B', 'KB', 'MB', 'GB', 'TB']
    exponent = (Math.log(bytes) / Math.log(1024)).to_i
    exponent = units.length - 1 if exponent > units.length - 1

    "%.1f %s" % [bytes.to_f / (1024 ** exponent), units[exponent]]
  end

  # Generate random color for categories
  def random_category_color
    colors = ['#007bff', '#28a745', '#ffc107', '#dc3545', '#6f42c1', '#e83e8c', '#fd7e14', '#20c997']
    colors.sample
  end

  # Flash message classes for Bootstrap
  def flash_class(level)
    case level.to_sym
    when :notice, :success
      "alert alert-success alert-dismissible fade show"
    when :alert, :error
      "alert alert-danger alert-dismissible fade show"
    when :warning
      "alert alert-warning alert-dismissible fade show"
    when :info
      "alert alert-info alert-dismissible fade show"
    else
      "alert alert-secondary alert-dismissible fade show"
    end
  end

  # Active link helper
  def nav_link(text, path, options = {})
    classes = options[:class] || ""
    classes += " active" if current_page?(path)
    link_to text, path, class: classes.strip
  end

  # Loading spinner
  def loading_spinner(size = 'sm')
    content_tag :div, class: "spinner-border spinner-border-#{size}", role: "status" do
      content_tag :span, "Loading...", class: "visually-hidden"
    end
  end
end