agent-ui/frontend/src/pages/TerminalPage.vue

<script setup lang="ts">
import { ref, onMounted, onBeforeUnmount, nextTick } from 'vue'
import { endpoints } from '../config/endpoints'
import { useTerminalRenderer } from '../composables/useTerminalRenderer'

const terminalContainer = ref<HTMLElement | null>(null)
const connected = ref(false)
const connecting = ref(false)
const error = ref<string | null>(null)
const sessionId = ref<string | null>(null)
const isResumedSession = ref(false)

let socket: WebSocket | null = null

const WS_URL = endpoints.terminal

// Terminal theme for TerminalPage (different from FloatingTerminal)
const TERMINAL_PAGE_THEME = {
  background: '#0f0f14',
  foreground: '#e4e4e7',
  cursor: '#6366f1',
  cursorAccent: '#0f0f14',
  selectionBackground: 'rgba(99, 102, 241, 0.3)',
  black: '#16161d',
  red: '#ef4444',
  green: '#22c55e',
  yellow: '#eab308',
  blue: '#3b82f6',
  magenta: '#a855f7',
  cyan: '#06b6d4',
  white: '#e4e4e7',
  brightBlack: '#52525b',
  brightRed: '#f87171',
  brightGreen: '#4ade80',
  brightYellow: '#facc15',
  brightBlue: '#60a5fa',
  brightMagenta: '#c084fc',
  brightCyan: '#22d3ee',
  brightWhite: '#ffffff'
}

// Use the composable
const renderer = useTerminalRenderer({
  container: terminalContainer,
  theme: TERMINAL_PAGE_THEME,
  fontSize: 14,
  fontFamily: "'JetBrains Mono', 'Fira Code', Consolas, monospace",
  onData: (data) => {
    if (socket && socket.readyState === WebSocket.OPEN) {
      socket.send(JSON.stringify({ type: 'input', data }))
    }
  },
  onResize: (cols, rows) => {
    if (socket && socket.readyState === WebSocket.OPEN) {
      socket.send(JSON.stringify({ type: 'resize', cols, rows }))
    }
  }
})

async function connect() {
  if (connecting.value) return

  connecting.value = true
  error.value = null

  try {
    socket = new WebSocket(WS_URL)

    socket.onopen = () => {
      connected.value = true
      connecting.value = false
      renderer.focus()

      const term = renderer.terminal.value
      if (term) {
        socket?.send(JSON.stringify({ type: 'resize', cols: term.cols, rows: term.rows }))
      }
    }

    socket.onmessage = async (event) => {
      const msg = JSON.parse(event.data)

      if (msg.type === 'connected') {
        sessionId.value = msg.sessionId
        isResumedSession.value = !msg.isNew

        if (msg.hasHistory) {
          // Request replay
          socket?.send(JSON.stringify({ type: 'request-replay', tailOnly: false }))
        } else if (!msg.isNew) {
          renderer.writeln('\x1b[36m[Reconnected to existing session]\x1b[0m')
        }
      } else if (msg.type === 'replay') {
        await renderer.handleReplay(msg.data || '')
      } else if (msg.type === 'output') {
        renderer.write(msg.data)
      } else if (msg.type === 'exit') {
        renderer.write(msg.data)
        sessionId.value = null
      } else if (msg.type === 'error') {
        error.value = msg.message
        renderer.writeln(`\x1b[31mError: ${msg.message}\x1b[0m`)
      }
    }

    socket.onclose = () => {
      connected.value = false
      connecting.value = false
      if (sessionId.value) {
        renderer.writeln('\x1b[33mDisconnected - session preserved on server\x1b[0m')
      } else {
        renderer.writeln('\x1b[33mConnection closed\x1b[0m')
      }
    }

    socket.onerror = () => {
      error.value = 'WebSocket connection failed. Make sure terminal server is running.'
      connecting.value = false
    }
  } catch (e: any) {
    error.value = e.message
    connecting.value = false
  }
}

function disconnect() {
  if (socket) {
    socket.close()
    socket = null
  }
  connected.value = false
}

function clearTerminal() {
  renderer.clear()
  renderer.reset()
}

async function copyContent() {
  const content = renderer.getBufferContent()
  if (!content) return

  try {
    await navigator.clipboard.writeText(content)
    const btn = document.querySelector('.btn-copy') as HTMLButtonElement
    if (btn) {
      btn.classList.add('copied')
      setTimeout(() => btn.classList.remove('copied'), 1500)
    }
  } catch (e) {
    console.error('Failed to copy:', e)
  }
}

function runClaudeCode() {
  if (socket && socket.readyState === WebSocket.OPEN) {
    socket.send(JSON.stringify({ type: 'input', data: 'claude\r' }))
  }
}

onMounted(async () => {
  await nextTick()
  renderer.init()
  connect()
})

onBeforeUnmount(() => {
  socket?.close()
  renderer.dispose()
})
</script>

<template>
  <div class="terminal-page">
    <!-- Toolbar -->
    <div class="terminal-toolbar">
      <div class="toolbar-left">
        <h2>Terminal</h2>
        <span v-if="connected" class="status connected">
          Connected
          <span v-if="sessionId" class="session-badge">{{ sessionId }}</span>
        </span>
        <span v-else-if="connecting" class="status connecting">Connecting...</span>
        <span v-else class="status disconnected">
          Disconnected
          <span v-if="sessionId" class="session-hint">(session active on server)</span>
        </span>
      </div>

      <div class="toolbar-actions">
        <button v-if="!connected" class="btn-primary" @click="connect" :disabled="connecting">
          Connect
        </button>
        <button v-else class="btn-secondary" @click="disconnect">
          Disconnect
        </button>

        <button class="btn-accent" @click="runClaudeCode" :disabled="!connected" title="Run Claude Code">
          <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
            <path d="M12 2L2 7l10 5 10-5-10-5z"/>
            <path d="M2 17l10 5 10-5"/>
            <path d="M2 12l10 5 10-5"/>
          </svg>
          Claude
        </button>

        <button class="btn-icon btn-copy" @click="copyContent" title="Copy terminal content">
          <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
            <rect x="9" y="9" width="13" height="13" rx="2" ry="2"/>
            <path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"/>
          </svg>
        </button>

        <button class="btn-icon" @click="clearTerminal" title="Clear terminal">
          <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
            <path d="M3 6h18"/>
            <path d="M19 6v14c0 1-1 2-2 2H7c-1 0-2-1-2-2V6"/>
            <path d="M8 6V4c0-1 1-2 2-2h4c1 0 2 1 2 2v2"/>
          </svg>
        </button>
      </div>
    </div>

    <!-- Error message -->
    <div v-if="error && !connected" class="error-banner">
      {{ error }}
      <p class="error-hint">Make sure the server is running with <code>bun start</code> in the server folder</p>
    </div>

    <!-- Terminal container -->
    <div ref="terminalContainer" class="terminal-container"></div>
  </div>
</template>

<style scoped>
.terminal-page {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
  background: #0f0f14;
}

.terminal-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.toolbar-left h2 {
  margin: 0;
  font-size: 1rem;
  color: var(--text-primary);
}

.status {
  font-size: 0.75rem;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  font-weight: 500;
}

.status.connected { background: var(--success-bg); color: var(--success); }
.status.connecting { background: var(--warning-bg); color: var(--warning); }
.status.disconnected { background: var(--error-bg); color: var(--error); }

.session-badge {
  margin-left: 0.5rem;
  padding: 0.125rem 0.375rem;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  font-size: 0.7rem;
  font-family: var(--font-mono);
}

.session-hint {
  margin-left: 0.25rem;
  font-size: 0.7rem;
  opacity: 0.8;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary {
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-secondary {
  padding: 0.5rem 1rem;
  background: var(--bg-hover);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
}
.btn-secondary:hover { background: var(--bg-tertiary); }

.btn-accent {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-accent:hover:not(:disabled) { opacity: 0.9; }
.btn-accent:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-icon {
  padding: 0.5rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text-primary); }
.btn-icon.btn-copy.copied { color: var(--success); background: var(--success-bg); }

.error-banner {
  padding: 1rem;
  background: var(--error-bg);
  color: var(--error);
  font-size: 0.875rem;
  border-bottom: 1px solid var(--error);
}

.error-hint {
  margin: 0.5rem 0 0;
  font-size: 0.8rem;
  opacity: 0.8;
}

.error-hint code {
  background: rgba(0, 0, 0, 0.2);
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  font-family: var(--font-mono);
}

.terminal-container {
  flex: 1;
  padding: 0.5rem;
  overflow: hidden;
}

/* xterm overrides */
.terminal-container :deep(.xterm) { height: 100%; padding: 0.5rem; }
.terminal-container :deep(.xterm-viewport) { overflow-y: auto !important; }
.terminal-container :deep(.xterm-viewport::-webkit-scrollbar) { width: 10px; }
.terminal-container :deep(.xterm-viewport::-webkit-scrollbar-track) { background: #16161d; }
.terminal-container :deep(.xterm-viewport::-webkit-scrollbar-thumb) { background: #2a2a3a; border-radius: 5px; }
.terminal-container :deep(.xterm-viewport::-webkit-scrollbar-thumb:hover) { background: #3a3a4a; }
</style>