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import { ref, computed, onMounted, watch } from 'vue'
import { useRoute, useRouter } from 'vue-router'
import { GraduationCap, ArrowLeft, UserMinus, UserPlus, Search, X, Loader2, Edit2, Check, X as CloseIcon, Info } from 'lucide-vue-next'
import { useCourseStore } from '@/stores/course.store'
import { userApi } from '@/api/user.api'
import { useToast } from '@/composables/useToast'
import { useRole } from '@/composables/useRole'
import { roleLabelKey } from '@/i18n/role-labels'
import { useI18n } from 'vue-i18n' // <-- i18n importieren
import Card from '@/components/ui/Card.vue'
import BaseButton from '@/components/ui/BaseButton.vue'
import BaseInput from '@/components/ui/BaseInput.vue'
import Modal from '@/components/ui/Modal.vue'
import type { User } from '@/types'
// ----------------------------------------------------------------
// Setup
// ----------------------------------------------------------------
const route = useRoute()
const router = useRouter()
const courseStore = useCourseStore()
const toast = useToast()
// Permission mirror: editing course name and managing members is the
// same staff-level capability the backend gates on course-teacher
// membership. We approximate with ``isStaff`` because the legacy view
// already did, and the API will still reject non-teachers.
const { isStaff } = useRole()
const { t } = useI18n() // <-- i18n initialisieren
const courseId = computed(() => String(route.params.id))
// --- Kursname bearbeiten ---
const isEditingName = ref(false)
const editNameValue = ref('')
const startEditName = () => {
editNameValue.value = courseStore.currentCourse?.name || ''
isEditingName.value = true
}
const cancelEditName = () => {
isEditingName.value = false
}
const saveName = async () => {
if (!editNameValue.value || editNameValue.value === courseStore.currentCourse?.name) {
isEditingName.value = false
return
}
try {
await courseStore.updateCourse(courseId.value, { name: editNameValue.value })
toast.success(t('CourseDetailView.toasts.nameUpdated'))
isEditingName.value = false
} catch (err) {
toast.error(t('CourseDetailView.toasts.nameUpdateError'))
}
}
// ----------------------------------------------------------------
// Modal States (Mitglieder)
// ----------------------------------------------------------------
const showAddModal = ref(false)
const searchQuery = ref('')
const searchResults = ref<User[]>([])
const isSearching = ref(false)
const selectedToAdd = ref<Map<string, User>>(new Map())
const isAddingMembers = ref(false)
const removingId = ref<string | null>(null)
const showRemoveModal = ref(false)
const memberToRemove = ref<User | null>(null)
// ----------------------------------------------------------------
// Loading
// ----------------------------------------------------------------
const loadCourse = async () => {
try {
await courseStore.fetchCourseById(courseId.value)
if (courseStore.courses.length === 0) {
await courseStore.fetchCourses()
}
} catch {
toast.error(t('CourseDetailView.toasts.loadError'))
router.push({ path: '/courses' })
}
}
onMounted(loadCourse)
watch(courseId, loadCourse)
// ----------------------------------------------------------------
// User search & selection
// ----------------------------------------------------------------
const loadAvailableUsers = async () => {
isSearching.value = true
try {
const { data } = await userApi.list({ role: 'student', limit: 100 })
searchResults.value = data
} catch {
searchResults.value = []
toast.error(t('CourseDetailView.toasts.loadUsersError'))
} finally {
isSearching.value = false
}
}
let searchTimer: number | null = null
watch(searchQuery, (q) => {
if (searchTimer) window.clearTimeout(searchTimer)
const query = q.trim()
if (query.length === 0) {
loadAvailableUsers()
return
}
if (query.length < 2) return
searchTimer = window.setTimeout(async () => {
isSearching.value = true
try {
const { data } = await userApi.search(query, 10)
searchResults.value = data
} catch {
searchResults.value = []
} finally {
isSearching.value = false
}
}, 300) as unknown as number
})
const isAlreadyMember = (userId: string) =>
courseStore.currentMembers.some((m) => m.userId === userId)
const getOtherCourseName = (userCourseId: string | undefined | null) => {
if (!userCourseId || userCourseId === courseId.value) return null
const found = courseStore.courses.find(c => c.courseId === userCourseId)
return found ? found.name : t('CourseDetailView.otherCourseFallback')
}
const toggleSelection = (user: User) => {
if (selectedToAdd.value.has(user.userId)) {
selectedToAdd.value.delete(user.userId)
} else {
selectedToAdd.value.set(user.userId, user)
}
selectedToAdd.value = new Map(selectedToAdd.value)
}
const removeSelection = (userId: string) => {
selectedToAdd.value.delete(userId)
selectedToAdd.value = new Map(selectedToAdd.value)
}
const openAddModal = () => {
searchQuery.value = ''
selectedToAdd.value = new Map()
showAddModal.value = true
loadAvailableUsers()
}
const closeAddModal = () => {
showAddModal.value = false
}
const submitAddMembers = async () => {
if (selectedToAdd.value.size === 0) return
isAddingMembers.value = true
try {
const ids = Array.from(selectedToAdd.value.keys())
await courseStore.addMembers(courseId.value, ids)
// Singular/Plural bei Toasts
if (ids.length === 1) {
toast.success(t('CourseDetailView.toasts.membersAddedSingular'))
} else {
toast.success(t('CourseDetailView.toasts.membersAddedPlural', { count: ids.length }))
}
closeAddModal()
} catch (err: any) {
toast.error(err?.response?.data?.detail || t('CourseDetailView.toasts.addError'))
} finally {
isAddingMembers.value = false
}
}
// ----------------------------------------------------------------
// Member removal
// ----------------------------------------------------------------
const requestRemoveMember = (user: User) => {
memberToRemove.value = user
showRemoveModal.value = true
}
const closeRemoveModal = () => {
if (removingId.value) return
showRemoveModal.value = false
memberToRemove.value = null
}
const confirmRemoveMember = async () => {
if (!memberToRemove.value) return
const user = memberToRemove.value
removingId.value = user.userId
try {
await courseStore.removeMember(courseId.value, user.userId)
toast.success(t('CourseDetailView.toasts.memberRemoved'))
showRemoveModal.value = false
memberToRemove.value = null
} catch (err: any) {
toast.error(err?.response?.data?.detail || t('CourseDetailView.toasts.removeError'))
} finally {
removingId.value = null
}
}
// ----------------------------------------------------------------
// Display helpers
// ----------------------------------------------------------------
const memberCount = computed(() => courseStore.currentMembers.length)
const roleLabel = (role: string | undefined) => {
// Zentralisierte Role-Labels (i18n/role-labels.ts) → konsistente
// Übersetzungen über Views hinweg.
return t(roleLabelKey(role))
}
const roleClass = (role: string | undefined) => {
switch (role) {
case 'admin': return 'bg-red-50 text-red-700'
case 'teacher': return 'bg-purple-50 text-purple-700'
default: return 'bg-blue-50 text-blue-700'
}
}
</script>
<template>
<div class="p-6 max-w-5xl mx-auto">
<button
@click="router.push('/courses')"
class="flex items-center gap-2 text-gray-500 hover:text-gray-900 mb-4 text-sm"
>
<ArrowLeft :size="16" />
{{ $t('CourseDetailView.back') }}
</button>
<div v-if="courseStore.isLoading && !courseStore.currentCourse" class="text-center py-16 text-gray-400">
{{ $t('CourseDetailView.loading') }}
</div>
<div v-else-if="courseStore.currentCourse" class="space-y-6">
<div class="flex items-start gap-5 border-b border-gray-100 pb-6">
<div class="w-14 h-14 bg-blue-100 rounded-xl flex items-center justify-center flex-shrink-0">
<GraduationCap :size="28" class="text-blue-600" />
</div>
<div class="flex-grow">
<div v-if="!isEditingName" class="flex items-center gap-3">
<h1 class="text-3xl font-bold text-gray-900">{{ courseStore.currentCourse.name }}</h1>
<button
v-if="isStaff"
@click="startEditName"
class="p-1 hover:bg-gray-100 rounded text-gray-400 hover:text-blue-600 transition"
:title="$t('CourseDetailView.editNameTitle')"
>
<Edit2 :size="20" />
</button>
</div>
<div v-else class="flex items-center gap-2 max-w-md">
<BaseInput v-model="editNameValue" @keyup.enter="saveName" auto-focus />
<BaseButton @click="saveName" class="!p-2" :title="$t('CourseDetailView.save')">
<Check :size="18" />
</BaseButton>
<BaseButton variant="ghost" @click="cancelEditName" class="!p-2" :title="$t('CourseDetailView.cancel')">
<CloseIcon :size="18" />
</BaseButton>
</div>
<p class="text-gray-500 text-sm mt-1">
{{ memberCount === 1 ? $t('CourseDetailView.memberSingular', { count: memberCount }) : $t('CourseDetailView.memberPlural', { count: memberCount }) }}
</p>
</div>
</div>
<Card>
<div class="flex items-center justify-between mb-4">
<h2 class="text-lg font-semibold text-gray-900">{{ $t('CourseDetailView.membersTitle') }}</h2>
<BaseButton
v-if="isStaff"
@click="openAddModal"
class="flex items-center gap-2"
>
<UserPlus :size="16" />
{{ $t('CourseDetailView.addMemberBtn') }}
</BaseButton>
</div>
<div
v-if="courseStore.currentMembers.length === 0"
class="py-10 text-center text-gray-400 text-sm"
>
{{ $t('CourseDetailView.noMembers') }}
</div>
<ul v-else class="divide-y divide-gray-100">
<li
v-for="user in courseStore.currentMembers"
:key="user.userId"
class="flex items-center justify-between py-3"
>
<div class="flex items-center gap-3">
<div class="w-9 h-9 rounded-full bg-gray-100 flex items-center justify-center text-gray-600 text-sm font-semibold">
{{ (user.username || '?').charAt(0).toUpperCase() }}
</div>
<div>
<div class="font-medium text-gray-900">{{ user.username }}</div>
<div class="text-xs text-gray-500">{{ user.email }}</div>
</div>
</div>
<div class="flex items-center gap-3">
<span
class="text-xs px-2 py-0.5 rounded font-medium"
:class="roleClass(user.role)"
>
{{ roleLabel(user.role) }}
</span>
<button
v-if="isStaff"
@click="requestRemoveMember(user)"
:disabled="removingId === user.userId"
class="p-2 hover:bg-red-50 rounded-lg transition disabled:opacity-50"
:title="$t('CourseDetailView.removeMemberTitle')"
>
<Loader2 v-if="removingId === user.userId" :size="16" class="animate-spin text-red-500" />
<UserMinus v-else :size="16" class="text-red-600" />
</button>
</div>
</li>
</ul>
</Card>
</div>
<Modal :show="showAddModal" @close="closeAddModal">
<template #header>
<h2 class="text-xl font-semibold">{{ $t('CourseDetailView.addModal.title') }}</h2>
</template>
<template #body>
<div class="space-y-5">
<div class="bg-blue-50 text-blue-800 p-3.5 rounded-lg text-sm flex gap-3 items-start border border-blue-100">
<Info :size="18" class="mt-0.5 flex-shrink-0 text-blue-600" />
<p v-html="$t('CourseDetailView.addModal.info')"></p>
</div>
<div class="relative">
<Search :size="16" class="absolute left-3 top-1/2 -translate-y-1/2 text-gray-400" />
<input
v-model="searchQuery"
type="text"
:placeholder="$t('CourseDetailView.addModal.searchPlaceholder')"
class="w-full pl-9 pr-3 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-emerald-500 outline-none"
/>
</div>
<div v-if="selectedToAdd.size > 0" class="flex flex-wrap gap-2">
<span
v-for="user in Array.from(selectedToAdd.values())"
:key="user.userId"
class="flex items-center gap-1 bg-emerald-50 text-emerald-700 text-sm px-2 py-1 rounded"
>
{{ user.username }}
<button @click="removeSelection(user.userId)" class="hover:text-emerald-900">
<X :size="14" />
</button>
</span>
</div>
<div class="max-h-64 overflow-y-auto border border-gray-200 rounded-lg overscroll-contain">
<div v-if="isSearching" class="p-4 text-center text-gray-400 text-sm">
{{ $t('CourseDetailView.addModal.loadingUsers') }}
</div>
<div
v-else-if="searchResults.length === 0"
class="p-4 text-center text-gray-400 text-sm"
>
{{ $t('CourseDetailView.addModal.noUsersFound') }}
</div>
<ul v-else class="divide-y divide-gray-100">
<label
v-for="user in searchResults"
:key="user.userId"
class="flex items-center justify-between p-3 hover:bg-gray-50 transition select-none"
:class="isAlreadyMember(user.userId) ? 'opacity-75' : 'cursor-pointer'"
>
<div class="flex items-center gap-3">
<div class="w-8 h-8 rounded-full bg-gray-100 flex items-center justify-center text-gray-600 text-xs font-semibold">
{{ (user.username || '?').charAt(0).toUpperCase() }}
</div>
<div>
<div class="font-medium text-gray-900 text-sm">{{ user.username }}</div>
<div class="text-xs text-gray-500">{{ user.email }}</div>
</div>
</div>
<div class="flex items-center gap-3">
<span v-if="isAlreadyMember(user.userId)" class="text-xs text-gray-400">
{{ $t('CourseDetailView.addModal.alreadyMember') }}
</span>
<template v-else>
<span
v-if="getOtherCourseName(user.courseId)"
class="text-xs font-medium text-orange-700 bg-orange-100 px-2 py-1 rounded"
>
{{ $t('CourseDetailView.addModal.inOtherCourse', { courseName: getOtherCourseName(user.courseId) }) }}
</span>
<input
type="checkbox"
:checked="selectedToAdd.has(user.userId)"
@change="toggleSelection(user)"
class="w-4 h-4 text-emerald-600 rounded border-gray-300 focus:ring-emerald-500 cursor-pointer"
/>
</template>
</div>
</label>
</ul>
</div>
</div>
</template>
<template #footer>
<div class="flex justify-end gap-3">
<BaseButton variant="ghost" @click="closeAddModal" :disabled="isAddingMembers">
{{ $t('CourseDetailView.addModal.cancel') }}
</BaseButton>
<BaseButton
@click="submitAddMembers"
:disabled="selectedToAdd.size === 0 || isAddingMembers"
>
{{ isAddingMembers ? $t('CourseDetailView.addModal.adding') : $t('CourseDetailView.addModal.addCount', { count: selectedToAdd.size }) }}
</BaseButton>
</div>
</template>
</Modal>
<Modal :show="showRemoveModal" @close="closeRemoveModal">
<template #header>
<h2 class="text-xl font-semibold text-red-700">{{ $t('CourseDetailView.removeModal.title') }}</h2>
</template>
<template #body>
<div class="space-y-3">
<p class="text-gray-700" v-html="$t('CourseDetailView.removeModal.confirmPrompt', { username: memberToRemove?.username })"></p>
<p class="text-sm text-gray-500">
{{ $t('CourseDetailView.removeModal.warning') }}
</p>
</div>
</template>
<template #footer>
<div class="flex justify-end gap-3">
<BaseButton variant="ghost" @click="closeRemoveModal" :disabled="!!removingId">
{{ $t('CourseDetailView.removeModal.cancel') }}
</BaseButton>
<BaseButton variant="red" @click="confirmRemoveMember" :disabled="!!removingId">
{{ removingId ? $t('CourseDetailView.removeModal.removing') : $t('CourseDetailView.removeModal.remove') }}
</BaseButton>
</div>
</template>
</Modal>
</div>
</template> |