feat: add import agents dialog with CSV upload and progress view

frontend/src/components/ui/importer/Importer.vue

@@ -0,0 +1,216 @@
+<template>
+  <div>
+    <Button @click="showDialog = true">Import Agents</Button>
+
+    <Dialog v-model:open="showDialog">
+      <DialogContent class="sm:max-w-[600px]">
+        <DialogHeader>
+          <DialogTitle>Import Agents</DialogTitle>
+        </DialogHeader>
+
+        <div class="space-y-4 py-4">
+          <!-- File Upload Section -->
+          <div v-if="!importing && !complete" class="space-y-4">
+            <div class="space-y-2">
+              <label class="text-sm font-medium">Select CSV File</label>
+              <Input 
+                type="file" 
+                accept=".csv"
+                @change="onFileSelect"
+                ref="fileInput"
+              />
+            </div>
+
+            <Card v-if="file" class="p-3">
+              <p class="text-sm"><strong>File:</strong> {{ file.name }}</p>
+            </Card>
+
+            <Alert>
+              <AlertTitle>Required CSV Format</AlertTitle>
+              <AlertDescription>
+                <code class="text-xs">first_name, last_name, email, roles, teams</code>
+                <p class="text-xs mt-1">Roles and teams must match exactly (case-sensitive)</p>
+              </AlertDescription>
+            </Alert>
+
+            <Button @click="startImport" :disabled="!file" class="w-full">
+              Start Import
+            </Button>
+          </div>
+
+          <!-- Progress Section -->
+          <div v-if="status" class="space-y-4">
+            <div class="flex gap-4 justify-center">
+              <div class="text-center">
+                <p class="text-xs text-muted-foreground mb-1">Total</p>
+                <Badge variant="outline" class="text-lg px-3 py-1">{{ status.total }}</Badge>
+              </div>
+              <div class="text-center">
+                <p class="text-xs text-muted-foreground mb-1">Success</p>
+                <Badge class="text-lg px-3 py-1 bg-green-500">{{ status.success }}</Badge>
+              </div>
+              <div class="text-center">
+                <p class="text-xs text-muted-foreground mb-1">Errors</p>
+                <Badge variant="destructive" class="text-lg px-3 py-1">{{ status.errors }}</Badge>
+              </div>
+            </div>
+
+            <Separator />
+
+            <div v-if="importing" class="flex items-center gap-2">
+              <Spinner class="h-4 w-4" />
+              <span class="text-sm">Importing agents...</span>
+            </div>
+
+            <Alert v-if="complete" class="bg-green-50 dark:bg-green-950 border-green-200">
+              <AlertTitle class="text-green-600">Success!</AlertTitle>
+              <AlertDescription class="text-green-600">Import completed successfully</AlertDescription>
+            </Alert>
+
+            <!-- Logs -->
+            <div>
+              <p class="text-sm font-medium mb-2">Import Logs</p>
+              <Card class="p-3">
+                <div class="bg-black text-white p-3 rounded-md text-xs font-mono max-h-60 overflow-y-auto space-y-1">
+                  <div v-for="(log, idx) in status.logs" :key="idx">
+                    {{ log }}
+                  </div>
+                </div>
+              </Card>
+            </div>
+          </div>
+
+          <Alert v-if="error" variant="destructive">
+            <AlertTitle>Error</AlertTitle>
+            <AlertDescription>{{ error }}</AlertDescription>
+          </Alert>
+        </div>
+
+        <DialogFooter>
+          <Button v-if="complete" @click="resetAndClose">Done</Button>
+          <Button variant="outline" @click="closeDialog" :disabled="importing">
+            Cancel
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  </div>
+</template>
+
+<script setup>
+import { ref, onBeforeUnmount } from 'vue'
+import { Button } from '@/components/ui/button'
+import { Input } from '@/components/ui/input'
+import { Card } from '@/components/ui/card'
+import { Badge } from '@/components/ui/badge'
+import { Alert, AlertTitle, AlertDescription } from '@/components/ui/alert'
+import { Separator } from '@/components/ui/separator'
+import { Spinner } from '@/components/ui/spinner'
+import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter } from '@/components/ui/dialog'
+import axios from 'axios'
+
+const showDialog = ref(false)
+const file = ref(null)
+const importing = ref(false)
+const complete = ref(false)
+const status = ref(null)
+const error = ref('')
+const pollInterval = ref(null)
+
+const emit = defineEmits(['import-complete'])
+
+const getCSRFToken = () => {
+  const name = 'csrf_token='
+  const cookies = document.cookie.split(';')
+  for (let i = 0; i < cookies.length; i++) {
+    let c = cookies[i].trim()
+    if (c.indexOf(name) === 0) {
+      return c.substring(name.length, c.length)
+    }
+  }
+  return ''
+}
+
+const onFileSelect = (e) => {
+  file.value = e.target.files[0]
+  error.value = ''
+}
+
+const startImport = async () => {
+  if (!file.value) return
+
+  error.value = ''
+  importing.value = true
+
+  const formData = new FormData()
+  formData.append('file', file.value)
+
+  try {
+    await axios.post('/api/v1/agents/import', formData, {
+      headers: {
+        'Content-Type': 'multipart/form-data',
+        'X-CSRFTOKEN': getCSRFToken()
+      }
+    })
+
+    startPolling()
+  } catch (err) {
+    error.value = err.response?.data?.message || err.message || 'Upload failed'
+    importing.value = false
+  }
+}
+
+const startPolling = () => {
+  pollInterval.value = setInterval(fetchStatus, 1000)
+}
+
+const fetchStatus = async () => {
+  try {
+    const res = await axios.get('/api/v1/agents/import/status')
+    status.value = res.data.data
+
+    if (!status.value.running) {
+      stopPolling()
+      importing.value = false
+      complete.value = true
+    }
+  } catch (err) {
+    if (err.response?.status !== 404) {
+      console.error('Poll error:', err)
+    }
+  }
+}
+
+const stopPolling = () => {
+  if (pollInterval.value) {
+    clearInterval(pollInterval.value)
+    pollInterval.value = null
+  }
+}
+
+const closeDialog = () => {
+  if (importing.value && !confirm('Import in progress. Close?')) return
+  stopPolling()
+  resetState()
+  showDialog.value = false
+}
+
+const resetAndClose = () => {
+  stopPolling()
+  resetState()
+  showDialog.value = false
+  emit('import-complete')
+}
+
+const resetState = () => {
+  file.value = null
+  importing.value = false
+  complete.value = false
+  status.value = null
+  error.value = ''
+}
+
+onBeforeUnmount(() => {
+  stopPolling()
+})
+</script>