'use client'

import { cn } from '@/lib/utils'
import { CheckCircle, Circle, Clock, XCircle, Trophy } from 'lucide-react'

interface TimelineItem {
  status: string
  label: string
  date: Date | string | null
  completed: boolean
  isTerminal?: boolean
}

interface StatusTrackerProps {
  timeline: TimelineItem[]
  currentStatus: string
  className?: string
}

export function StatusTracker({
  timeline,
  currentStatus,
  className,
}: StatusTrackerProps) {
  const formatDate = (date: Date | string | null) => {
    if (!date) return null
    const d = typeof date === 'string' ? new Date(date) : date
    return d.toLocaleDateString('en-US', {
      month: 'short',
      day: 'numeric',
      year: 'numeric',
    })
  }

  return (
    <div className={cn('relative', className)}>
      <div className="space-y-0">
        {timeline.map((item, index) => {
          const isCompleted = item.completed
          const isCurrent =
            isCompleted && !timeline[index + 1]?.completed
          const isPending = !isCompleted
          const isRejected = item.status === 'REJECTED' && item.isTerminal
          const isWinner = item.status === 'WINNER' && isCompleted

          return (
            <div key={item.status} className="relative flex gap-4">
              {/* Vertical line */}
              {index < timeline.length - 1 && (
                <div
                  className={cn(
                    'absolute left-[15px] top-[32px] h-full w-0.5',
                    isRejected
                      ? 'bg-destructive/30'
                      : isCompleted
                        ? 'bg-primary'
                        : 'bg-muted'
                  )}
                />
              )}

              {/* Icon */}
              <div className="relative z-10 flex h-8 w-8 shrink-0 items-center justify-center">
                {isRejected ? (
                  <div className="flex h-8 w-8 items-center justify-center rounded-full bg-destructive text-destructive-foreground">
                    <XCircle className="h-4 w-4" />
                  </div>
                ) : isWinner ? (
                  <div className="flex h-8 w-8 items-center justify-center rounded-full bg-yellow-500 text-white">
                    <Trophy className="h-4 w-4" />
                  </div>
                ) : isCompleted ? (
                  <div
                    className={cn(
                      'flex h-8 w-8 items-center justify-center rounded-full',
                      isCurrent
                        ? 'bg-primary text-primary-foreground'
                        : 'bg-primary/20 text-primary'
                    )}
                  >
                    {isCurrent ? (
                      <Clock className="h-4 w-4" />
                    ) : (
                      <CheckCircle className="h-4 w-4" />
                    )}
                  </div>
                ) : (
                  <div className="flex h-8 w-8 items-center justify-center rounded-full border-2 border-muted bg-background">
                    <Circle className="h-4 w-4 text-muted-foreground" />
                  </div>
                )}
              </div>

              {/* Content */}
              <div className="flex-1 pb-8">
                <div className="flex items-center gap-2">
                  <p
                    className={cn(
                      'font-medium',
                      isRejected && 'text-destructive',
                      isWinner && 'text-yellow-600',
                      isPending && !isRejected && 'text-muted-foreground'
                    )}
                  >
                    {item.label}
                  </p>
                  {isCurrent && !isRejected && !isWinner && (
                    <span className="text-xs bg-primary/10 text-primary px-2 py-0.5 rounded-full">
                      Current
                    </span>
                  )}
                  {isRejected && (
                    <span className="text-xs bg-destructive/10 text-destructive px-2 py-0.5 rounded-full">
                      Final
                    </span>
                  )}
                  {isWinner && (
                    <span className="text-xs bg-yellow-100 text-yellow-700 px-2 py-0.5 rounded-full">
                      Winner
                    </span>
                  )}
                </div>
                {item.date && (
                  <p className="text-sm text-muted-foreground">
                    {formatDate(item.date)}
                  </p>
                )}
                {isPending && !isCurrent && !isRejected && (
                  <p className="text-sm text-muted-foreground">Pending</p>
                )}
              </div>
            </div>
          )
        })}
      </div>
    </div>
  )
}

// Compact horizontal version
interface StatusBarProps {
  status: string
  statuses: { value: string; label: string }[]
  className?: string
}

export function StatusBar({ status, statuses, className }: StatusBarProps) {
  const currentIndex = statuses.findIndex((s) => s.value === status)

  return (
    <div className={cn('flex items-center gap-2', className)}>
      {statuses.map((s, index) => {
        const isCompleted = index <= currentIndex
        const isCurrent = index === currentIndex

        return (
          <div key={s.value} className="flex items-center gap-2">
            {index > 0 && (
              <div
                className={cn(
                  'h-0.5 w-8',
                  isCompleted ? 'bg-primary' : 'bg-muted'
                )}
              />
            )}
            <div
              className={cn(
                'flex items-center gap-1 px-2 py-1 rounded-full text-xs font-medium',
                isCurrent
                  ? 'bg-primary text-primary-foreground'
                  : isCompleted
                    ? 'bg-primary/20 text-primary'
                    : 'bg-muted text-muted-foreground'
              )}
            >
              {isCompleted && !isCurrent && (
                <CheckCircle className="h-3 w-3" />
              )}
              {s.label}
            </div>
          </div>
        )
      })}
    </div>
  )
}