---
import { Icon } from 'astro-icon/components';
import { twMerge } from 'tailwind-merge';
import type { Item } from '~/types';

export interface Props {
  items?: Array<Item & { year?: string }>;
  defaultIcon?: string;
  classes?: Record<string, string>;
  compact?: boolean;
}

const { items = [], classes = {}, defaultIcon, compact = false } = Astro.props as Props;

const {
  container: containerClass = '',
  panel: panelClass = '',
  title: titleClass = '',
  description: descriptionClass = '',
  icon: defaultIconClass = 'text-primary dark:text-slate-200 border-primary dark:border-blue-700',
  timeline: timelineClass = 'bg-primary/30 dark:bg-blue-700/30',
  timelineDot: timelineDotClass = 'bg-primary dark:bg-blue-700',
  year: yearClass = 'text-primary dark:text-blue-300',
} = classes;
---

{
  items && items.length && (
    <div class={twMerge("relative mx-auto max-w-5xl", containerClass)}>
      {/* Main timeline line */}
      <div class="absolute left-4 md:left-1/2 top-0 h-full w-1 transform -translate-x-1/2 z-0 transition-all duration-300 ease-in-out" class:list={[timelineClass]}></div>
      
      <div class="relative">
        {items.map((item, index) => {
          const { title, description, icon, classes: itemClasses = {} } = item;
          const isEven = index % 2 === 0;
          
          // Use the year property if available, otherwise try to extract from date
          let year = item.year;
          
          // If year is not provided, try to extract from date in the description
          if (!year && description) {
            // Look for a date pattern like MM-YYYY
            const dateMatch = description.match(/\d{2}-(\d{4})/);
            if (dateMatch) {
              year = dateMatch[1];
            }
          }
          
          return (
            <div class={`relative ${compact ? 'mb-6' : 'mb-12'}`}>
              {/* Year marker (if available) */}
              {year && (
                <div class={twMerge("absolute left-4 md:left-1/2 transform -translate-x-1/2 -top-4 font-bold text-sm z-10", yearClass)}>
                  {year}
                </div>
              )}
              
              {/* Timeline dot */}
              <div class={`absolute left-4 md:left-1/2 transform -translate-x-1/2 top-5 ${compact ? 'w-3 h-3' : 'w-4 h-4'} rounded-full z-10 shadow-md transition-all duration-300 ease-in-out`} class:list={[timelineDotClass]}></div>
              
              {/* Content card */}
              <div 
                class={twMerge(
                  'relative ml-10 md:ml-0 md:w-[45%]',
                  isEven ? 'md:mr-auto md:pr-6' : 'md:ml-auto md:pl-6',
                  'transition-all duration-300 ease-in-out'
                )}
              >
                <div
                  class={twMerge(
                    `flex flex-col border border-gray-200 dark:border-gray-700 rounded-lg ${compact ? 'p-3' : 'p-4'} shadow-sm hover:shadow-md transition-all duration-300 ease-in-out bg-white dark:bg-gray-900 hover:translate-y-[-3px] group card-container`,
                    panelClass,
                    itemClasses?.panel
                  )}
                >
                  <div class="flex items-center mb-2">
                    {(icon || defaultIcon) && (
                      <Icon
                        name={icon || defaultIcon}
                        class={twMerge(`${compact ? 'w-6 h-6 p-1' : 'w-7 h-7 p-1.5'} rounded-full border-2 mr-2 flex-shrink-0`, defaultIconClass, itemClasses?.icon)}
                      />
                    )}
                    {title && <p class={twMerge(`${compact ? 'text-base' : 'text-lg'} font-bold`, titleClass, itemClasses?.title)} set:html={title} />}
                  </div>
                  {description && (
                    <div class="max-h-0 group-hover:max-h-[500px] overflow-hidden transition-all duration-500 ease-in-out" data-details>
                      <div class="flex items-center justify-center mb-1 opacity-70 group-hover:opacity-0 transition-opacity duration-200 h-4">
                        <div class="w-6 h-1 bg-gray-300 dark:bg-gray-700 rounded-full"></div>
                      </div>
                      <div
                        class={twMerge(`text-muted ${compact ? 'text-sm' : 'text-sm'} opacity-0 group-hover:opacity-100 transition-all duration-500 ease-in-out`, descriptionClass, itemClasses?.description)}
                        set:html={description}
                      />
                    </div>
                  )}
                </div>
                
                {/* Connector line to timeline (visible only on desktop) */}
                <div class={twMerge(
                  'absolute top-5 hidden md:block h-0.5 w-6 z-0',
                  isEven ? 'right-0 bg-gradient-to-r' : 'left-0 bg-gradient-to-l',
                  'from-transparent to-primary/70 dark:to-blue-700/70'
                )}></div>
              </div>
            </div>
          );
        })}
      </div>
    </div>
  )
}

<style>
  /* Add some animation classes */
  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* Card container styles */
  .card-container {
    min-height: 0;
    height: auto;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), box-shadow 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform, box-shadow;
  }
  
  /* Hover effect for details */
  [data-details] {
    transform-origin: top;
    transition: max-height 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                opacity 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: max-height, opacity;
  }
  
  /* Add a subtle indicator that more content is available */
  .group:not(:hover) [data-details] {
    max-height: 0 !important;
    overflow: hidden;
  }
  
  .group:hover [data-details] {
    max-height: 500px; /* Large enough to fit content but still allows animation */
  }
  
  @keyframes fadeIn {
    to { opacity: 1; }
  }
  
  /* Responsive adjustments */
  @media (max-width: 768px) {
    .timeline-item {
      width: calc(100% - 2.5rem);
      margin-left: 2.5rem;
    }
  }
</style>