<script setup lang="ts">
import { ref, computed, onMounted } from 'vue'
import { useServerStore } from '@/stores/server'
import { useAuthStore } from '@/stores/auth'
import {
  Server,
  Wifi,
  WifiOff,
  Play,
  Square,
  RotateCcw,
  Save,
  Loader2,
  Download,
  Terminal,
  Monitor,
} from 'lucide-vue-next'

const server = useServerStore()
const auth = useAuthStore()

const editMode = ref(false)
const saving = ref(false)
const actionLoading = ref<string | null>(null)
const copied = ref(false)

const isAgentConnected = computed(() =>
  server.connection?.connection_type === 'bare_metal' &&
  server.connection?.connection_status === 'connected'
)

const agentLastSeen = computed(() => {
  const ts = server.connection?.companion_last_seen
  if (!ts) return null
  return new Date(ts)
})

const agentLastSeenLabel = computed(() => {
  const d = agentLastSeen.value
  if (!d) return 'Never'
  const diff = Math.floor((Date.now() - d.getTime()) / 1000)
  if (diff < 60) return `${diff}s ago`
  if (diff < 3600) return `${Math.floor(diff / 60)}m ago`
  if (diff < 86400) return `${Math.floor(diff / 3600)}h ago`
  return d.toLocaleDateString()
})

const licenseKey = computed(() => auth.license?.license_key || 'YOUR-LICENSE-KEY')

const linuxCommands = computed(() => `# Download the agent
curl -LO https://git.corrosionmgmt.com/vantzs/corrosion-admin-panel/releases/latest/download/corrosion-companion-linux-amd64
chmod +x corrosion-companion-linux-amd64

# Start with your license key
export LICENSE_ID="${licenseKey.value}"
export NATS_URL="nats://nats.corrosionmgmt.com:4222"
export NATS_TOKEN="<your-nats-token>"
export GAME_SERVER_PATH="/path/to/RustDedicated"
./corrosion-companion-linux-amd64`)

async function copyCommands() {
  try {
    await navigator.clipboard.writeText(linuxCommands.value)
    copied.value = true
    setTimeout(() => { copied.value = false }, 2000)
  } catch {
    // Clipboard API unavailable
  }
}

const form = ref({
  server_name: '',
  max_players: 0,
  world_size: 0,
  current_seed: 0,
})

function loadFormFromConfig() {
  if (server.config) {
    form.value = {
      server_name: server.config.server_name || '',
      max_players: server.config.max_players ?? 100,
      world_size: server.config.world_size ?? 4000,
      current_seed: server.config.current_seed ?? 0,
    }
  }
}

async function saveConfig() {
  saving.value = true
  try {
    await server.updateConfig(form.value)
    editMode.value = false
  } catch {
    // Handle error
  } finally {
    saving.value = false
  }
}

async function serverAction(action: 'start' | 'stop' | 'restart') {
  actionLoading.value = action
  try {
    if (action === 'start') await server.startServer()
    else if (action === 'stop') await server.stopServer()
    else await server.restartServer()
    await server.fetchServer()
  } catch {
    // Handle error
  } finally {
    actionLoading.value = null
  }
}

onMounted(async () => {
  await server.fetchServer()
  loadFormFromConfig()
})
</script>

<template>
  <div class="p-6 space-y-6">
    <!-- Header -->
    <div class="flex items-center gap-3">
      <Server class="w-5 h-5 text-oxide-500" />
      <h1 class="text-2xl font-bold text-neutral-100">Server Management</h1>
    </div>

    <!-- Connection Status Card -->
    <div class="bg-neutral-900 border border-neutral-800 rounded-lg p-5">
      <h2 class="text-sm font-medium text-neutral-400 uppercase tracking-wider mb-4">Connection</h2>
      <div class="grid grid-cols-2 lg:grid-cols-4 gap-6">
        <div>
          <p class="text-xs text-neutral-500 mb-1">Status</p>
          <div class="flex items-center gap-2">
            <component
              :is="server.connection?.connection_status === 'connected' ? Wifi : WifiOff"
              class="w-4 h-4"
              :class="server.connection?.connection_status === 'connected' ? 'text-green-400' : 'text-red-400'"
            />
            <span class="text-sm font-medium text-neutral-100 capitalize">
              {{ server.connection?.connection_status || 'Unknown' }}
            </span>
          </div>
        </div>
        <div>
          <p class="text-xs text-neutral-500 mb-1">Connection Type</p>
          <p class="text-sm font-medium text-neutral-100 uppercase">
            {{ server.connection?.connection_type || '\u2014' }}
          </p>
        </div>
        <div>
          <p class="text-xs text-neutral-500 mb-1">Server IP</p>
          <p class="text-sm font-mono text-neutral-300">
            {{ server.connection?.server_ip || '\u2014' }}:{{ server.connection?.server_port || '' }}
          </p>
        </div>
        <div>
          <p class="text-xs text-neutral-500 mb-1">Game Port</p>
          <p class="text-sm font-mono text-neutral-300">
            {{ server.connection?.game_port || '\u2014' }}
          </p>
        </div>
      </div>
    </div>

    <!-- Server Controls -->
    <div class="bg-neutral-900 border border-neutral-800 rounded-lg p-5">
      <h2 class="text-sm font-medium text-neutral-400 uppercase tracking-wider mb-4">Controls</h2>
      <div class="flex flex-wrap gap-3">
        <button
          @click="serverAction('start')"
          :disabled="server.connection?.connection_status === 'connected' || actionLoading !== null"
          class="flex items-center gap-2 px-4 py-2.5 bg-green-600/20 hover:bg-green-600/30 disabled:opacity-30 disabled:cursor-not-allowed text-green-400 border border-green-600/30 rounded-lg text-sm font-medium transition-colors"
        >
          <Loader2 v-if="actionLoading === 'start'" class="w-4 h-4 animate-spin" />
          <Play v-else class="w-4 h-4" />
          Start Server
        </button>
        <button
          @click="serverAction('stop')"
          :disabled="server.connection?.connection_status !== 'connected' || actionLoading !== null"
          class="flex items-center gap-2 px-4 py-2.5 bg-red-600/20 hover:bg-red-600/30 disabled:opacity-30 disabled:cursor-not-allowed text-red-400 border border-red-600/30 rounded-lg text-sm font-medium transition-colors"
        >
          <Loader2 v-if="actionLoading === 'stop'" class="w-4 h-4 animate-spin" />
          <Square v-else class="w-4 h-4" />
          Stop Server
        </button>
        <button
          @click="serverAction('restart')"
          :disabled="server.connection?.connection_status !== 'connected' || actionLoading !== null"
          class="flex items-center gap-2 px-4 py-2.5 bg-oxide-600/20 hover:bg-oxide-600/30 disabled:opacity-30 disabled:cursor-not-allowed text-oxide-400 border border-oxide-600/30 rounded-lg text-sm font-medium transition-colors"
        >
          <Loader2 v-if="actionLoading === 'restart'" class="w-4 h-4 animate-spin" />
          <RotateCcw v-else class="w-4 h-4" />
          Restart Server
        </button>
      </div>
    </div>

    <!-- Companion Agent -->
    <div class="bg-neutral-900 border border-neutral-800 rounded-lg p-5">
      <div class="flex items-center gap-2 mb-5">
        <Monitor class="w-4 h-4 text-oxide-400" />
        <h2 class="text-sm font-medium text-neutral-400 uppercase tracking-wider">Companion Agent</h2>
      </div>

      <!-- Agent Status -->
      <div class="grid grid-cols-2 lg:grid-cols-3 gap-6 mb-6">
        <div>
          <p class="text-xs text-neutral-500 mb-1">Agent Status</p>
          <div class="flex items-center gap-2">
            <span
              class="w-2 h-2 rounded-full"
              :class="isAgentConnected ? 'bg-green-400' : 'bg-neutral-600'"
            />
            <span
              class="text-sm font-medium"
              :class="isAgentConnected ? 'text-green-400' : 'text-neutral-400'"
            >
              {{ isAgentConnected ? 'Active' : 'Inactive' }}
            </span>
          </div>
        </div>
        <div>
          <p class="text-xs text-neutral-500 mb-1">Connection Type</p>
          <p class="text-sm font-medium text-neutral-100 uppercase">
            {{ server.connection?.connection_type || '\u2014' }}
          </p>
        </div>
        <div>
          <p class="text-xs text-neutral-500 mb-1">Last Heartbeat</p>
          <p class="text-sm font-medium" :class="agentLastSeen ? 'text-neutral-200' : 'text-neutral-500'">
            {{ agentLastSeenLabel }}
          </p>
        </div>
      </div>

      <!-- Download Section -->
      <div class="mb-6">
        <div class="flex items-center gap-2 mb-3">
          <Download class="w-3.5 h-3.5 text-neutral-500" />
          <p class="text-xs font-medium text-neutral-400 uppercase tracking-wider">Download Companion Agent</p>
        </div>
        <div class="flex flex-wrap gap-3">
          <a
            href="https://git.corrosionmgmt.com/vantzs/corrosion-admin-panel/releases/latest/download/corrosion-companion-linux-amd64"
            download="corrosion-companion-linux-amd64"
            class="flex items-center gap-2 px-4 py-2.5 bg-neutral-800 hover:bg-neutral-700 text-neutral-200 border border-neutral-700 hover:border-neutral-600 rounded-lg text-sm font-medium transition-colors"
          >
            <Download class="w-4 h-4 text-oxide-400" />
            Linux (amd64)
          </a>
          <a
            href="https://git.corrosionmgmt.com/vantzs/corrosion-admin-panel/releases/latest/download/corrosion-companion-windows-amd64.exe"
            download="corrosion-companion-windows-amd64.exe"
            class="flex items-center gap-2 px-4 py-2.5 bg-neutral-800 hover:bg-neutral-700 text-neutral-200 border border-neutral-700 hover:border-neutral-600 rounded-lg text-sm font-medium transition-colors"
          >
            <Download class="w-4 h-4 text-oxide-400" />
            Windows (amd64)
          </a>
        </div>
      </div>

      <!-- Quick Setup Section -->
      <div>
        <div class="flex items-center justify-between mb-3">
          <div class="flex items-center gap-2">
            <Terminal class="w-3.5 h-3.5 text-neutral-500" />
            <p class="text-xs font-medium text-neutral-400 uppercase tracking-wider">Quick Setup (Linux)</p>
          </div>
          <button
            @click="copyCommands"
            class="flex items-center gap-1.5 px-3 py-1 text-xs font-medium rounded-md transition-colors"
            :class="copied
              ? 'bg-green-600/20 text-green-400 border border-green-600/30'
              : 'bg-neutral-800 hover:bg-neutral-700 text-neutral-400 hover:text-neutral-200 border border-neutral-700'"
          >
            {{ copied ? 'Copied!' : 'Copy' }}
          </button>
        </div>
        <div class="bg-black/50 border border-neutral-800 rounded-lg p-4 font-mono text-sm text-neutral-300 overflow-x-auto">
          <p class="text-neutral-500"># Download the agent</p>
          <p>curl -LO https://git.corrosionmgmt.com/vantzs/corrosion-admin-panel/releases/latest/download/corrosion-companion-linux-amd64</p>
          <p>chmod +x corrosion-companion-linux-amd64</p>
          <p class="mt-3 text-neutral-500"># Start with your license key</p>
          <p>export LICENSE_ID=<span class="text-oxide-400">"{{ licenseKey }}"</span></p>
          <p>export NATS_URL=<span class="text-oxide-400">"nats://nats.corrosionmgmt.com:4222"</span></p>
          <p>export NATS_TOKEN=<span class="text-neutral-500">"&lt;your-nats-token&gt;"</span></p>
          <p>export GAME_SERVER_PATH=<span class="text-neutral-500">"/path/to/RustDedicated"</span></p>
          <p>./corrosion-companion-linux-amd64</p>
        </div>
      </div>
    </div>

    <!-- Configuration -->
    <div class="bg-neutral-900 border border-neutral-800 rounded-lg p-5">
      <div class="flex items-center justify-between mb-4">
        <h2 class="text-sm font-medium text-neutral-400 uppercase tracking-wider">Configuration</h2>
        <button
          v-if="!editMode"
          @click="editMode = true; loadFormFromConfig()"
          class="text-sm text-oxide-400 hover:text-oxide-300 transition-colors"
        >
          Edit
        </button>
      </div>

      <!-- Read mode -->
      <div v-if="!editMode" class="grid grid-cols-2 lg:grid-cols-4 gap-6">
        <div>
          <p class="text-xs text-neutral-500 mb-1">Server Name</p>
          <p class="text-sm text-neutral-200">{{ server.config?.server_name || 'Not configured' }}</p>
        </div>
        <div>
          <p class="text-xs text-neutral-500 mb-1">Max Players</p>
          <p class="text-sm text-neutral-200">{{ server.config?.max_players ?? '\u2014' }}</p>
        </div>
        <div>
          <p class="text-xs text-neutral-500 mb-1">World Size</p>
          <p class="text-sm text-neutral-200">{{ server.config?.world_size ?? '\u2014' }}</p>
        </div>
        <div>
          <p class="text-xs text-neutral-500 mb-1">Current Seed</p>
          <p class="text-sm text-neutral-200">{{ server.config?.current_seed ?? '\u2014' }}</p>
        </div>
      </div>

      <!-- Edit mode -->
      <form v-else @submit.prevent="saveConfig" class="space-y-4">
        <div class="grid grid-cols-2 gap-4">
          <div class="col-span-2">
            <label class="block text-xs text-neutral-500 mb-1">Server Name</label>
            <input
              v-model="form.server_name"
              type="text"
              class="w-full px-3 py-2 bg-neutral-800 border border-neutral-700 rounded-lg text-sm text-neutral-100 focus:outline-none focus:ring-2 focus:ring-oxide-500/50 focus:border-oxide-500 transition-colors"
            />
          </div>
          <div>
            <label class="block text-xs text-neutral-500 mb-1">Max Players</label>
            <input
              v-model.number="form.max_players"
              type="number"
              min="1"
              max="500"
              class="w-full px-3 py-2 bg-neutral-800 border border-neutral-700 rounded-lg text-sm text-neutral-100 focus:outline-none focus:ring-2 focus:ring-oxide-500/50 focus:border-oxide-500 transition-colors"
            />
          </div>
          <div>
            <label class="block text-xs text-neutral-500 mb-1">World Size</label>
            <input
              v-model.number="form.world_size"
              type="number"
              min="1000"
              max="8000"
              class="w-full px-3 py-2 bg-neutral-800 border border-neutral-700 rounded-lg text-sm text-neutral-100 focus:outline-none focus:ring-2 focus:ring-oxide-500/50 focus:border-oxide-500 transition-colors"
            />
          </div>
          <div>
            <label class="block text-xs text-neutral-500 mb-1">Current Seed</label>
            <input
              v-model.number="form.current_seed"
              type="number"
              class="w-full px-3 py-2 bg-neutral-800 border border-neutral-700 rounded-lg text-sm text-neutral-100 focus:outline-none focus:ring-2 focus:ring-oxide-500/50 focus:border-oxide-500 transition-colors"
            />
          </div>
        </div>
        <div class="flex items-center gap-3 pt-2">
          <button
            type="submit"
            :disabled="saving"
            class="flex items-center gap-2 px-4 py-2 bg-oxide-600 hover:bg-oxide-700 disabled:opacity-50 text-white text-sm font-medium rounded-lg transition-colors"
          >
            <Save class="w-4 h-4" />
            {{ saving ? 'Saving...' : 'Save Changes' }}
          </button>
          <button
            type="button"
            @click="editMode = false"
            class="px-4 py-2 text-sm text-neutral-400 hover:text-neutral-200 transition-colors"
          >
            Cancel
          </button>
        </div>
      </form>
    </div>

    <!-- Advanced Settings -->
    <div class="bg-neutral-900 border border-neutral-800 rounded-lg p-5">
      <h2 class="text-sm font-medium text-neutral-400 uppercase tracking-wider mb-4">Automation</h2>
      <div class="grid grid-cols-2 lg:grid-cols-3 gap-6">
        <div class="flex items-center justify-between">
          <div>
            <p class="text-sm text-neutral-200">Auto-Restart</p>
            <p class="text-xs text-neutral-500">Restart on crash detection</p>
          </div>
          <div
            class="w-9 h-5 rounded-full transition-colors cursor-pointer"
            :class="server.config?.crash_recovery_enabled ? 'bg-oxide-500' : 'bg-neutral-700'"
          >
            <div
              class="w-4 h-4 bg-white rounded-full shadow transition-transform mt-0.5"
              :class="server.config?.crash_recovery_enabled ? 'translate-x-4.5' : 'translate-x-0.5'"
            />
          </div>
        </div>
        <div class="flex items-center justify-between">
          <div>
            <p class="text-sm text-neutral-200">Auto-Update on Force Wipe</p>
            <p class="text-xs text-neutral-500">Update when Facepunch pushes</p>
          </div>
          <div
            class="w-9 h-5 rounded-full transition-colors cursor-pointer"
            :class="server.config?.auto_update_on_force_wipe ? 'bg-oxide-500' : 'bg-neutral-700'"
          >
            <div
              class="w-4 h-4 bg-white rounded-full shadow transition-transform mt-0.5"
              :class="server.config?.auto_update_on_force_wipe ? 'translate-x-4.5' : 'translate-x-0.5'"
            />
          </div>
        </div>
        <div class="flex items-center justify-between">
          <div>
            <p class="text-sm text-neutral-200">Force Wipe Eligible</p>
            <p class="text-xs text-neutral-500">Server participates in force wipes</p>
          </div>
          <div
            class="w-9 h-5 rounded-full transition-colors cursor-pointer"
            :class="server.config?.force_wipe_eligible ? 'bg-oxide-500' : 'bg-neutral-700'"
          >
            <div
              class="w-4 h-4 bg-white rounded-full shadow transition-transform mt-0.5"
              :class="server.config?.force_wipe_eligible ? 'translate-x-4.5' : 'translate-x-0.5'"
            />
          </div>
        </div>
      </div>
    </div>
  </div>
</template>
