<template>
  <div class="server-portlet">
    <div class="portlet-header">
      <h2 class="portlet-title">🖥️ 서버 현황</h2>
      <div class="summary-badges">
        <span class="badge">
          서버 {{ summary.servers.total }}대
          <span class="level-counts">
            <span class="lv">🟢{{ summary.servers.normal }}</span>
            <span class="lv">🟡{{ summary.servers.warning }}</span>
            <span class="lv">🟠{{ summary.servers.critical }}</span>
            <span class="lv">🔴{{ summary.servers.danger }}</span>
            <span class="lv">⚫{{ summary.servers.offline }}</span>
          </span>
        </span>
        <span class="divider">|</span>
        <span class="badge">
          컨테이너 {{ summary.containers.total }}개
          <span class="level-counts">
            <span class="lv">🟢{{ summary.containers.normal }}</span>
            <span class="lv">🟡{{ summary.containers.warning }}</span>
            <span class="lv">🟠{{ summary.containers.critical }}</span>
            <span class="lv">🔴{{ (summary.containers.danger || 0) + summary.containers.stopped }}</span>
          </span>
        </span>
      </div>
    </div>
    
    <div class="server-grid">
      <div 
        v-for="server in servers" 
        :key="server.target_id"
        :class="['server-unit', server.level]"
      >
        <div class="server-info" @dblclick="goToServerStatus(server.target_id)">
          <div class="server-name">
            <span class="level-icon">{{ levelIcon(server.level) }}</span>
            <div class="name-wrap">
              <span class="name">{{ server.server_name }}</span>
              <span class="server-ip">{{ server.server_ip }}</span>
            </div>
            <span class="container-count" v-if="server.level !== 'offline'">📦{{ server.container_summary.total }}</span>
          </div>
          
          <template v-if="server.level !== 'offline'">
            <!-- 업타임 -->
            <div class="info-row">
              <span class="info-label">UP</span>
              <span class="info-value">{{ server.uptime_str || '-' }}</span>
            </div>
            
            <div class="metric-row">
              <span class="metric-label">CPU</span>
              <div class="progress-bar">
                <div :class="['progress-fill', server.cpu_level]" :style="{ width: (server.cpu_percent || 0) + '%' }"></div>
              </div>
              <span :class="['metric-value', server.cpu_level, { 'value-changed': isChanged(server.target_id, 'cpu') }]">
                {{ server.cpu_percent?.toFixed(0) || '-' }}%
              </span>
            </div>
            <div class="metric-row">
              <span class="metric-label">MEM</span>
              <div class="progress-bar">
                <div :class="['progress-fill', server.memory_level]" :style="{ width: calcMemPercent(server) + '%' }"></div>
              </div>
              <span :class="['metric-value', server.memory_level, { 'value-changed': isChanged(server.target_id, 'mem') }]">
                {{ calcMemPercent(server).toFixed(0) }}%
              </span>
            </div>
            <div class="metric-row">
              <span class="metric-label">DISK</span>
              <div class="progress-bar">
                <div :class="['progress-fill', server.disk_level]" :style="{ width: (server.disk_percent || 0) + '%' }"></div>
              </div>
              <span :class="['metric-value', server.disk_level, { 'value-changed': isChanged(server.target_id, 'disk') }]">
                {{ server.disk_percent?.toFixed(0) || '-' }}%
              </span>
            </div>
            
            <!-- 추가 정보: 온도, Load, 메모리용량, 디스크용량 -->
            <div class="info-row">
              <span class="info-label">TEMP</span>
              <span class="info-value">{{ server.cpu_temp ? server.cpu_temp + '°C' : '-' }}</span>
            </div>
            <div class="info-row">
              <span class="info-label">LOAD</span>
              <span class="info-value">{{ server.load_percent ? server.load_percent.toFixed(1) + '%' : '-' }}</span>
            </div>
            <div class="info-row">
              <span class="info-label">RAM</span>
              <span class="info-value">{{ formatServerMem(server) }}</span>
            </div>
            <div class="info-row">
              <span class="info-label">HDD</span>
              <span class="info-value">{{ formatServerDisk(server) }}</span>
            </div>
          </template>
          
          <template v-else>
            <div class="offline-info">
              <div class="offline-text">오프라인</div>
              <div class="offline-time">{{ formatTimeAgo(server.last_collected) }}</div>
            </div>
          </template>
        </div>
        
        <div class="container-area" v-if="server.level !== 'offline'">
          <div 
            v-for="container in sortContainers(server.containers)" 
            :key="server.target_id + '-' + container.name"
            :class="['container-card', container.level]"
            @click="goToServerStatus(server.target_id, container.name)"
          >
            <div class="card-header">
              <div class="card-name">
                <span class="card-level">{{ levelIcon(container.level) }}</span>
                <span class="name">{{ container.name }}</span>
              </div>
              <span class="card-uptime" v-if="container.status === 'running'">{{ container.uptime || '-' }}</span>
            </div>
            <template v-if="container.status === 'running'">
              <div class="card-metrics">
                <div class="card-metric">
                  <span class="label">CPU</span>
                  <div class="mini-bar">
                    <div :class="['mini-fill', getContainerCpuLevel(container)]" :style="{ width: Math.min(container.cpu_percent || 0, 100) + '%' }"></div>
                  </div>
                  <span :class="['value', { 'value-changed': isContainerChanged(server.target_id, container.name, 'cpu') }]">
                    {{ formatCpuPercent(container.cpu_percent) }}
                  </span>
                </div>
                <div class="card-metric">
                  <span class="label">MEM</span>
                  <div class="mini-bar">
                    <div :class="['mini-fill', getContainerMemLevel(container)]" :style="{ width: getMemPercent(container) + '%' }"></div>
                  </div>
                  <span :class="['value', { 'mem-highlight': isMemoryOver1GB(container.memory_usage), 'value-changed': isContainerChanged(server.target_id, container.name, 'mem') }]">
                    {{ formatMemoryShort(container.memory_usage) }}
                  </span>
                </div>
                <div class="card-metric">
                  <span class="label">↓RX</span>
                  <span :class="['value', 'net', { 'value-changed': isContainerChanged(server.target_id, container.name, 'rx') }]">
                    {{ formatNetworkShort(container.network_rx) }}
                  </span>
                </div>
                <div class="card-metric">
                  <span class="label">↑TX</span>
                  <span :class="['value', 'net', { 'value-changed': isContainerChanged(server.target_id, container.name, 'tx') }]">
                    {{ formatNetworkShort(container.network_tx) }}
                  </span>
                </div>
              </div>
            </template>
            <template v-else>
              <div class="card-stopped">{{ container.status }}</div>
            </template>
          </div>
          
          <div class="no-container" v-if="server.containers.length === 0">
            <span>컨테이너 없음</span>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, watch } from 'vue'

interface ContainerStatus {
  name: string
  status: string
  level: string
  cpu_percent: number | null
  memory_usage: number | null
  memory_limit: number | null
  uptime: string | null
  network_rx: number | null
  network_tx: number | null
}

interface ServerStatus {
  target_id: number
  server_name: string
  server_ip: string
  level: string
  cpu_percent: number | null
  cpu_level: string
  memory_percent: number | null
  memory_level: string
  memory_total: number | null
  memory_free: number | null
  memory_used: number | null
  disk_percent: number | null
  disk_level: string
  disk_used: number | null
  disk_total: number | null
  cpu_temp: number | null
  load_percent: number | null
  uptime_str: string | null
  last_collected: string | null
  containers: ContainerStatus[]
  container_summary: { total: number; normal: number; warning: number; critical: number; stopped: number }
}

interface Summary {
  servers: { total: number; normal: number; warning: number; critical: number; danger: number; offline: number }
  containers: { total: number; normal: number; warning: number; critical: number; danger: number; stopped: number }
}

const props = defineProps<{
  servers: ServerStatus[]
  summary: Summary
}>()

const emit = defineEmits<{
  (e: 'navigate', path: string): void
}>()

// 이전 값 저장 (변경 감지용)
const prevServerValues = ref<Record<string, Record<string, number | null>>>({})
const prevContainerValues = ref<Record<string, Record<string, number | null>>>({})
const changedKeys = ref<Set<string>>(new Set())

// 값 변경 감지
watch(() => props.servers, (newServers, oldServers) => {
  if (!oldServers || oldServers.length === 0) {
    // 초기 로드 시 이전 값 저장
    newServers.forEach(server => {
      prevServerValues.value[server.target_id] = {
        cpu: server.cpu_percent,
        mem: server.memory_percent,
        disk: server.disk_percent
      }
      server.containers.forEach(c => {
        const key = `${server.target_id}-${c.name}`
        prevContainerValues.value[key] = {
          cpu: c.cpu_percent,
          mem: c.memory_usage,
          rx: c.network_rx,
          tx: c.network_tx
        }
      })
    })
    return
  }
  
  const newChangedKeys = new Set<string>()
  
  newServers.forEach(server => {
    const prev = prevServerValues.value[server.target_id] || {}
    
    // 서버 값 비교
    if (prev.cpu !== server.cpu_percent) newChangedKeys.add(`server-${server.target_id}-cpu`)
    if (prev.mem !== server.memory_percent) newChangedKeys.add(`server-${server.target_id}-mem`)
    if (prev.disk !== server.disk_percent) newChangedKeys.add(`server-${server.target_id}-disk`)
    
    // 현재 값 저장
    prevServerValues.value[server.target_id] = {
      cpu: server.cpu_percent,
      mem: server.memory_percent,
      disk: server.disk_percent
    }
    
    // 컨테이너 값 비교
    server.containers.forEach(c => {
      const key = `${server.target_id}-${c.name}`
      const prevC = prevContainerValues.value[key] || {}
      
      if (prevC.cpu !== c.cpu_percent) newChangedKeys.add(`container-${key}-cpu`)
      if (prevC.mem !== c.memory_usage) newChangedKeys.add(`container-${key}-mem`)
      if (prevC.rx !== c.network_rx) newChangedKeys.add(`container-${key}-rx`)
      if (prevC.tx !== c.network_tx) newChangedKeys.add(`container-${key}-tx`)
      
      prevContainerValues.value[key] = {
        cpu: c.cpu_percent,
        mem: c.memory_usage,
        rx: c.network_rx,
        tx: c.network_tx
      }
    })
  })
  
  changedKeys.value = newChangedKeys
  
  // 1.5초 후 하이라이트 제거
  if (newChangedKeys.size > 0) {
    setTimeout(() => {
      changedKeys.value = new Set()
    }, 1500)
  }
}, { deep: true })

function isChanged(serverId: number, metric: string): boolean {
  return changedKeys.value.has(`server-${serverId}-${metric}`)
}

function isContainerChanged(serverId: number, containerName: string, metric: string): boolean {
  return changedKeys.value.has(`container-${serverId}-${containerName}-${metric}`)
}

// 서버 메모리 퍼센트: memory_percent 직접 사용
function calcMemPercent(server: ServerStatus): number {
  return server.memory_percent || 0
}

// 서버 메모리 용량 포맷: used/total GB (memory_used는 DB에서 계산된 값)
function formatServerMem(server: ServerStatus): string {
  const used = Number(server.memory_used) || 0
  const total = Number(server.memory_total) || 0
  if (total === 0) return '-'
  const usedGB = (used / (1024 * 1024 * 1024)).toFixed(1)
  const totalGB = (total / (1024 * 1024 * 1024)).toFixed(1)
  return `${usedGB}/${totalGB}G`
}

// 서버 디스크 용량 포맷: used/total GB
function formatServerDisk(server: ServerStatus): string {
  const used = Number(server.disk_used) || 0
  const total = Number(server.disk_total) || 0
  if (total === 0) return '-'
  const usedGB = (used / (1024 * 1024 * 1024)).toFixed(0)
  const totalGB = (total / (1024 * 1024 * 1024)).toFixed(0)
  return `${usedGB}/${totalGB}G`
}

function sortContainers(containers: ContainerStatus[]) {
  return [...containers].sort((a, b) => a.name.localeCompare(b.name))
}

function goToServerStatus(targetId: number, containerName?: string) {
  let path = `/server/history?target=${targetId}`
  if (containerName) path += `&container=${containerName}`
  emit('navigate', path)
}

function levelIcon(level: string): string {
  const icons: Record<string, string> = { normal: '🟢', warning: '🟡', critical: '🟠', danger: '🔴', offline: '⚫', stopped: '🔴' }
  return icons[level] || '⚪'
}

function getContainerCpuLevel(c: ContainerStatus): string {
  if (c.cpu_percent === null) return 'normal'
  if (c.cpu_percent >= 95) return 'danger'
  if (c.cpu_percent >= 90) return 'critical'
  if (c.cpu_percent >= 80) return 'warning'
  return 'normal'
}

function getContainerMemLevel(c: ContainerStatus): string {
  const pct = getMemPercent(c)
  if (pct >= 95) return 'danger'
  if (pct >= 90) return 'critical'
  if (pct >= 80) return 'warning'
  return 'normal'
}

function getMemPercent(c: ContainerStatus): number {
  if (!c.memory_limit || !c.memory_usage) return 0
  return (Number(c.memory_usage) / Number(c.memory_limit)) * 100
}

function formatCpuPercent(value: number | null): string {
  if (value === null || value === undefined) return '-'
  // 10% 이상이면 정수로, 미만이면 소수점 1자리
  if (value >= 10) return `${value.toFixed(0)}%`
  if (value >= 1) return `${value.toFixed(1)}%`
  if (value >= 0.1) return `${value.toFixed(1)}%`
  return `${value.toFixed(2)}%`
}

function formatMemoryShort(bytes: number | null): string {
  if (bytes === null || bytes === undefined) return '-'
  const numBytes = Number(bytes)
  if (numBytes < 1024 * 1024) return `${(numBytes / 1024).toFixed(0)}K`
  if (numBytes < 1024 * 1024 * 1024) return `${(numBytes / 1024 / 1024).toFixed(0)}M`
  return `${(numBytes / 1024 / 1024 / 1024).toFixed(1)}G`
}

function isMemoryOver1GB(bytes: number | null): boolean {
  if (bytes === null || bytes === undefined) return false
  return Number(bytes) >= 1024 * 1024 * 1024
}

function formatNetworkShort(bytes: number | null): string {
  if (bytes === null || bytes === undefined) return '-'
  const numBytes = Number(bytes)
  if (numBytes < 1024) return `${numBytes}B`
  if (numBytes < 1024 * 1024) return `${(numBytes / 1024).toFixed(0)}K`
  if (numBytes < 1024 * 1024 * 1024) return `${(numBytes / 1024 / 1024).toFixed(1)}M`
  return `${(numBytes / 1024 / 1024 / 1024).toFixed(2)}G`
}

function formatTimeAgo(datetime: string | null): string {
  if (!datetime) return '-'
  const now = new Date()
  const then = new Date(datetime.replace(' ', 'T') + '+09:00')
  const diff = Math.floor((now.getTime() - then.getTime()) / 1000)
  if (diff < 60) return `${diff}초 전`
  if (diff < 3600) return `${Math.floor(diff / 60)}분 전`
  if (diff < 86400) return `${Math.floor(diff / 3600)}시간 전`
  return `${Math.floor(diff / 86400)}일 전`
}
</script>

<style scoped>
.server-portlet { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 12px; overflow: hidden; }

.portlet-header { display: flex; justify-content: space-between; align-items: center; padding: 18px 24px; border-bottom: 1px solid var(--border-color); background: var(--bg-tertiary, #f8fafc); }
.portlet-title { margin: 0; font-size: 22px; font-weight: 600; color: var(--text-primary); }
.summary-badges { display: flex; align-items: center; gap: 16px; font-size: 17px; color: var(--text-secondary); }
.divider { color: var(--border-color); }
.level-counts { margin-left: 12px; }
.level-counts .lv { margin-right: 10px; font-size: 16px; }

.server-grid { display: flex; flex-wrap: wrap; gap: 16px; padding: 20px; align-items: flex-start; }

.server-unit { display: flex; background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 12px; overflow: hidden; }
.server-unit.warning { border-left: 5px solid #eab308; }
.server-unit.critical { border-left: 5px solid #f97316; }
.server-unit.danger { border-left: 5px solid #ef4444; }
.server-unit.offline { border-left: 5px solid #6b7280; opacity: 0.7; }

.server-info { width: 240px; min-width: 240px; padding: 16px; border-right: 1px solid var(--border-color); cursor: pointer; }
.server-info:hover { background: var(--bg-tertiary, #f8fafc); }

.server-name { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.server-name .level-icon { font-size: 16px; flex-shrink: 0; }
.server-name .name-wrap { flex: 1; min-width: 0; overflow: hidden; }
.server-name .name { display: block; font-size: 19px; font-weight: 700; color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.server-name .server-ip { display: block; font-size: 12px; color: var(--text-muted); font-family: monospace; margin-top: 2px; }
.server-name .container-count { font-size: 15px; color: var(--text-muted); flex-shrink: 0; }

.metric-row { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.metric-label { font-size: 14px; font-weight: 600; color: var(--text-muted); width: 42px; }
.progress-bar { flex: 1; height: 10px; background: var(--bg-tertiary, #e5e7eb); border-radius: 5px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 5px; transition: width 0.3s; }
.progress-fill.normal { background: #22c55e; }
.progress-fill.warning { background: #eab308; }
.progress-fill.critical { background: #f97316; }
.progress-fill.danger { background: #ef4444; }
.metric-value { font-size: 17px; font-weight: 700; width: 44px; text-align: right; transition: all 0.3s; padding: 2px 4px; border-radius: 4px; }
.metric-value.normal { color: #16a34a; }
.metric-value.warning { color: #ca8a04; }
.metric-value.critical { color: #ea580c; }
.metric-value.danger { color: #dc2626; }

.info-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.info-label { font-size: 14px; font-weight: 600; color: var(--text-muted); width: 42px; }
.info-value { flex: 1; font-size: 14px; font-weight: 600; color: var(--text-secondary); font-family: monospace; text-align: right; }

.offline-info { text-align: center; padding: 24px 0; color: var(--text-muted); }
.offline-text { font-size: 18px; margin-bottom: 8px; }
.offline-time { font-size: 15px; opacity: 0.7; }

.container-area { display: flex; flex-wrap: wrap; gap: 10px; padding: 12px; align-content: flex-start; min-width: 140px; }

.container-card { width: 208px; padding: 10px; border-radius: 8px; border: 1px solid var(--border-color); background: var(--bg-secondary); cursor: pointer; transition: all 0.15s; overflow: hidden; }
.container-card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.container-card.normal { background: var(--container-normal-bg, #f0fdf4); border-color: var(--container-normal-border, #86efac); }
.container-card.warning { background: var(--container-warning-bg, #fefce8); border-color: var(--container-warning-border, #fde047); }
.container-card.critical { background: var(--container-critical-bg, #fff7ed); border-color: var(--container-critical-border, #fdba74); }
.container-card.danger { background: var(--container-danger-bg, #fef2f2); border-color: var(--container-danger-border, #fca5a5); }
.container-card.stopped { background: var(--container-danger-bg, #fef2f2); border-color: var(--container-danger-border, #fca5a5); }

.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; overflow: hidden; }
.card-name { display: flex; align-items: center; gap: 6px; flex: 1; min-width: 0; overflow: hidden; }
.card-name .card-level { font-size: 12px; flex-shrink: 0; }
.card-name .name { font-size: 15px; font-weight: 700; color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-uptime { font-size: 12px; color: var(--text-muted); flex-shrink: 0; margin-left: 8px; white-space: nowrap; }

.card-metrics { display: flex; flex-wrap: wrap; gap: 5px 8px; }
.card-metric { display: flex; align-items: center; gap: 4px; width: calc(50% - 4px); overflow: visible; }
.card-metric .label { font-size: 11px; color: var(--text-muted); width: 22px; flex-shrink: 0; font-weight: 500; }
.mini-bar { flex: 1; height: 6px; background: rgba(0,0,0,0.1); border-radius: 3px; overflow: hidden; min-width: 20px; }
.mini-fill { height: 100%; border-radius: 3px; }
.mini-fill.normal { background: #22c55e; }
.mini-fill.warning { background: #eab308; }
.mini-fill.critical { background: #f97316; }
.mini-fill.danger { background: #ef4444; }
.card-metric .value { font-size: 13px; font-weight: 700; color: var(--text-secondary); min-width: 44px; text-align: right; flex-shrink: 0; transition: all 0.3s; padding: 1px 2px; border-radius: 3px; }
.card-metric .value.mem-highlight { color: #dc2626; font-weight: 800; }
.card-metric .value.net { color: var(--text-muted); font-weight: 600; }

.card-stopped { font-size: 15px; color: var(--text-muted); font-style: italic; text-align: center; padding: 10px 0; }

.no-container { font-size: 16px; color: var(--text-muted); padding: 16px; display: flex; align-items: center; justify-content: center; }

/* 값 변경 시 하이라이트 애니메이션 - 글자색 변경 */
@keyframes valueFlash {
  0% { 
    color: #3b82f6;
    text-shadow: 0 0 8px rgba(59, 130, 246, 0.8);
    transform: scale(1.15);
  }
  50% { 
    color: #60a5fa;
    text-shadow: 0 0 4px rgba(59, 130, 246, 0.5);
    transform: scale(1.08);
  }
  100% { 
    text-shadow: none;
    transform: scale(1);
  }
}

.value-changed {
  animation: valueFlash 1.5s ease-out;
}
</style>
