'use client'

import { motion } from 'framer-motion'
import { useEffect, useRef, useState } from 'react'

const commands: Record<string, string> = {
  help: `Available commands:
  ls              - List services
  kubectl         - Cluster info
  terraform       - Infrastructure
  argocd          - Deployments
  kafka           - Message broker
  about           - About me
  clear           - Clear terminal`,
  ls: `storage/
monitoring/
cicd/
sqs/
temporal/
iam/`,
  kubectl: `Nodes: 3 (talos-cp-1, talos-worker-1, talos-worker-2)
Pods: 42 running
Uptime: 99.2%
Cluster Version: v1.36.1`,
  terraform: `Modules: 18 deployed
Services: Kafka, PostgreSQL, MinIO, Grafana
Storage: Longhorn (3-replica)
Network: Cilium eBPF CNI`,
  argocd: `Applications: 12
Synced: 11/12
Last Sync: 2 min ago
Health: Healthy`,
  kafka: `Brokers: 3 (KRaft)
Replication Factor: 3
Min ISR: 2
Topics: 5 active
Throughput: ~1K msgs/sec`,
  about: `Rock Liang - Senior Full-Stack Systems Engineer
Experience: 5+ years (AWS, RBC, Homelab)
Focus: Infrastructure × Backend × LLM Systems
Tech: Go, Java, Python, C++ | Kubernetes, Terraform, gRPC
Current: Building production homelab + LLM inference optimization
Open Source: go-flink (distributed DataLakeHouse)`,
}

export function InteractiveTerminal() {
  const [input, setInput] = useState('')
  const [history, setHistory] = useState<{ cmd: string; output: string }[]>([])
  const [isOpen, setIsOpen] = useState(false)
  const terminalRef = useRef<HTMLDivElement>(null)

  useEffect(() => {
    const handleKeyDown = (e: KeyboardEvent) => {
      if ((e.metaKey || e.ctrlKey) && e.key === 'k') {
        e.preventDefault()
        setIsOpen(!isOpen)
      }
    }

    window.addEventListener('keydown', handleKeyDown)
    return () => window.removeEventListener('keydown', handleKeyDown)
  }, [isOpen])

  const handleCommand = (cmd: string) => {
    const trimmed = cmd.trim().toLowerCase()
    if (trimmed === 'clear') {
      setHistory([])
      setInput('')
      return
    }

    const output = commands[trimmed] || `command not found: ${cmd}`
    setHistory([...history, { cmd, output }])
    setInput('')

    setTimeout(() => {
      terminalRef.current?.scrollTo(0, terminalRef.current.scrollHeight)
    }, 0)
  }

  return (
    <motion.div
      className="fixed bottom-6 right-6 z-40"
      initial={{ opacity: 0, scale: 0.9 }}
      animate={{ opacity: 1, scale: 1 }}
    >
      {!isOpen ? (
        <button
          onClick={() => setIsOpen(true)}
          className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg font-mono text-sm shadow-lg"
        >
          Terminal (Cmd+K)
        </button>
      ) : (
        <motion.div
          initial={{ opacity: 0, y: 10 }}
          animate={{ opacity: 1, y: 0 }}
          className="bg-gray-950 border border-gray-700 rounded-lg shadow-2xl w-96 h-96 flex flex-col"
        >
          <div className="bg-gray-900 border-b border-gray-700 px-4 py-3 flex justify-between items-center">
            <span className="text-gray-300 font-mono text-xs">ZSH_THEME="robbyrussell"</span>
            <button
              onClick={() => setIsOpen(false)}
              className="text-gray-400 hover:text-white"
            >
              ✕
            </button>
          </div>

          <div
            ref={terminalRef}
            className="flex-1 overflow-y-auto px-4 py-3 font-mono text-sm text-gray-200 space-y-2"
          >
            {history.length === 0 && (
              <div className="text-gray-500">type 'help' for commands</div>
            )}
            {history.map((entry, i) => (
              <div key={i}>
                <div className="text-green-400"><span className="text-red-400">➜</span> % {entry.cmd}</div>
                <div className="text-gray-300 whitespace-pre-wrap text-xs mt-1">
                  {entry.output}
                </div>
              </div>
            ))}
          </div>

          <div className="border-t border-gray-700 px-4 py-2">
            <div className="flex items-center">
              <span className="text-red-400 font-mono text-sm">➜</span>
              <span className="text-green-400 font-mono text-sm ml-2">% </span>
              <input
                type="text"
                value={input}
                onChange={(e) => setInput(e.target.value)}
                onKeyPress={(e) => {
                  if (e.key === 'Enter') handleCommand(input)
                }}
                placeholder=""
                className="flex-1 bg-transparent text-green-400 font-mono text-sm outline-none ml-1"
                autoFocus
              />
            </div>
          </div>
        </motion.div>
      )}
    </motion.div>
  )
}