'use client'

import { useState, useEffect } from 'react'
import { motion } from 'framer-motion'
import { GitBranch, CheckCircle, XCircle, Loader2, AlertCircle } from 'lucide-react'

interface CIStatus {
  status: string
  conclusion?: string
  title?: string
  branch?: string
  url?: string
  updatedAt?: string
  error?: string
}

export function CIStatusIndicator() {
  const [ciStatus, setCIStatus] = useState<CIStatus | null>(null)
  const [loading, setLoading] = useState(true)

  useEffect(() => {
    const fetchStatus = async () => {
      try {
        const res = await fetch('/api/ci-status')
        const data = await res.json()
        setCIStatus(data)
      } catch {
        setCIStatus({ status: 'error', error: 'Failed to fetch' })
      } finally {
        setLoading(false)
      }
    }

    fetchStatus()
    // Poll every 60 seconds
    const interval = setInterval(fetchStatus, 60000)
    return () => clearInterval(interval)
  }, [])

  const getStatusIcon = () => {
    if (loading) return <Loader2 size={14} className="animate-spin" />
    if (!ciStatus || ciStatus.status === 'error') return <AlertCircle size={14} />
    if (ciStatus.conclusion === 'success') return <CheckCircle size={14} />
    if (ciStatus.conclusion === 'failure') return <XCircle size={14} />
    if (ciStatus.status === 'in_progress' || ciStatus.status === 'queued') {
      return <Loader2 size={14} className="animate-spin" />
    }
    return <GitBranch size={14} />
  }

  const getStatusColor = () => {
    if (loading) return 'text-gray-400'
    if (!ciStatus || ciStatus.status === 'error') return 'text-gray-400'
    if (ciStatus.conclusion === 'success') return 'text-green-500'
    if (ciStatus.conclusion === 'failure') return 'text-red-500'
    if (ciStatus.status === 'in_progress' || ciStatus.status === 'queued') {
      return 'text-yellow-500'
    }
    return 'text-gray-400'
  }

  const getStatusText = () => {
    if (loading) return 'Checking...'
    if (!ciStatus || ciStatus.status === 'error') return 'Unknown'
    if (ciStatus.conclusion === 'success') return 'Passing'
    if (ciStatus.conclusion === 'failure') return 'Failed'
    if (ciStatus.status === 'in_progress') return 'Running'
    if (ciStatus.status === 'queued') return 'Queued'
    return ciStatus.status
  }

  const content = (
    <motion.div
      initial={{ opacity: 0, x: 20 }}
      animate={{ opacity: 1, x: 0 }}
      transition={{ duration: 0.5, delay: 0.8 }}
      className={`flex items-center gap-2 px-3 py-1.5 rounded-full bg-white/90 dark:bg-gray-900/90 backdrop-blur-sm border border-gray-200 dark:border-gray-700 shadow-sm ${getStatusColor()}`}
    >
      <GitBranch size={14} className="text-gray-500 dark:text-gray-400" />
      {process.env.NEXT_PUBLIC_COMMIT_SHA ? (
        <a
          href={`https://forgejo.riotpiao.com/rock/riotpiao.com/commit/${process.env.NEXT_PUBLIC_COMMIT_SHA}`}
          target="_blank"
          rel="noopener noreferrer"
          className="text-xs font-mono font-medium text-gray-600 dark:text-gray-300 hover:text-blue-600 dark:hover:text-blue-400"
        >
          {process.env.NEXT_PUBLIC_COMMIT_SHA}
        </a>
      ) : (
        <span className="text-xs font-medium text-gray-600 dark:text-gray-300">CI</span>
      )}
      <div className={`flex items-center gap-1 ${getStatusColor()}`}>
        {getStatusIcon()}
        <span className="text-xs font-semibold">{getStatusText()}</span>
      </div>
    </motion.div>
  )

  if (ciStatus?.url) {
    return (
      <a
        href={ciStatus.url}
        target="_blank"
        rel="noopener noreferrer"
        className="hover:scale-105 transition-transform"
        title={ciStatus.title || 'View CI run'}
      >
        {content}
      </a>
    )
  }

  return content
}