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import { ref, onMounted } from 'vue'
import { useRouter } from 'vue-router'
import { GraduationCap, Trash2, Plus, Users } from 'lucide-vue-next'
import { useCourseStore } from '@/stores/course.store'
import { useToast } from '@/composables/useToast'
import { useRole } from '@/composables/useRole'
import { courseApi } from '@/api/course.api'
import { useI18n } from 'vue-i18n' // <-- i18n importiert
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 PageHeader from '@/components/ui/PageHeader.vue'
import EntityListState from '@/components/ui/EntityListState.vue'
const courseStore = useCourseStore()
const toast = useToast()
// Permission mirror: course CRUD is staff-only in the UI (the backend still
// enforces course-teacher membership on edit/delete). ``isStaff`` covers
// teacher + admin which matches the previous ``can.editCourse`` /
// ``can.createCourse`` / ``can.deleteCourse`` semantics.
const { isStaff } = useRole()
const router = useRouter()
const { t } = useI18n() // <-- i18n initialisiert
const showModal = ref(false)
const formData = ref({ name: '' })
const showDeleteModal = ref(false)
const courseToDelete = ref<{ courseId: string; name: string } | null>(null)
const isDeleting = ref(false)
const memberCounts = ref<Record<string, number>>({})
const fetchMemberCounts = async () => {
const entries = await Promise.all(
courseStore.courses.map(async (c) => {
try {
const { data } = await courseApi.listMembers(c.courseId)
return [c.courseId, data.length] as const
} catch {
return [c.courseId, 0] as const
}
})
)
memberCounts.value = Object.fromEntries(entries)
}
onMounted(async () => {
try {
await courseStore.fetchCourses()
if (isStaff.value) {
await fetchMemberCounts()
}
} catch (error) {
toast.error(t('CoursesView.toasts.loadError'))
}
})
const openCreateModal = () => {
formData.value = { name: '' }
showModal.value = true
}
const saveCourse = async () => {
try {
const created = await courseStore.createCourse({ name: formData.value.name })
toast.success(t('CoursesView.toasts.createSuccess'))
showModal.value = false
// Nach dem Erstellen direkt zur Detailseite navigieren
if (created?.courseId) {
router.push(`/courses/${created.courseId}`)
}
} catch (error: any) {
toast.error(error.response?.data?.detail || t('CoursesView.toasts.createError'))
}
}
const requestDelete = (course: { courseId: string; name: string }) => {
courseToDelete.value = course
showDeleteModal.value = true
}
const closeDeleteModal = () => {
if (isDeleting.value) return
showDeleteModal.value = false
courseToDelete.value = null
}
const confirmDelete = async () => {
if (!courseToDelete.value) return
const { courseId } = courseToDelete.value
isDeleting.value = true
try {
await courseStore.deleteCourse(courseId)
delete memberCounts.value[courseId]
toast.success(t('CoursesView.toasts.deleteSuccess'))
showDeleteModal.value = false
courseToDelete.value = null
} catch (error: any) {
toast.error(error.response?.data?.detail || t('CoursesView.toasts.deleteError'))
} finally {
isDeleting.value = false
}
}
const goToDetail = (courseId: string) => {
router.push({ path: `/courses/${courseId}` })
}
</script>
<template>
<div class="p-6">
<PageHeader :title="$t('CoursesView.title')" :subtitle="$t('CoursesView.subtitle')">
<template #actions>
<BaseButton
v-if="isStaff"
@click="openCreateModal"
class="flex items-center gap-2"
>
<Plus :size="16" />
{{ $t('CoursesView.newCourse') }}
</BaseButton>
</template>
</PageHeader>
<EntityListState
:is-loading="courseStore.isLoading && courseStore.courses.length === 0"
:is-empty="!courseStore.isLoading && courseStore.courses.length === 0"
:icon="GraduationCap"
:empty-message="$t('CoursesView.noCourses')"
:loading-message="$t('CoursesView.loading')"
>
<template #empty-action>
<BaseButton v-if="isStaff" @click="openCreateModal">
{{ $t('CoursesView.createFirst') }}
</BaseButton>
</template>
<div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
<Card
v-for="course in courseStore.courses"
:key="course.courseId"
class="flex flex-col group h-full relative cursor-pointer hover:border-emerald-200"
@click="goToDetail(course.courseId)"
>
<!-- Delete action (top-right) -->
<button
v-if="isStaff"
@click.stop="requestDelete(course)"
class="absolute top-3 right-3 p-2 hover:bg-red-50 rounded-lg transition z-10"
:title="$t('CoursesView.deleteTitle')"
>
<Trash2 :size="16" class="text-red-600" />
</button>
<div class="flex items-center gap-4 mb-4">
<div class="bg-gray-50 p-3 rounded-lg text-blue-600 group-hover:text-primary transition-colors flex items-center justify-center w-[56px] h-[56px] flex-shrink-0 border border-gray-100">
<GraduationCap :size="32" />
</div>
<h3 class="font-bold text-xl text-gray-900 leading-tight pr-10">
{{ course.name }}
</h3>
</div>
<p class="text-gray-600 text-sm mb-6 flex-grow leading-relaxed text-left flex items-center gap-2">
<template v-if="isStaff">
<Users :size="14" class="text-gray-400" />
<span>
{{ memberCounts[course.courseId] ?? 0 }}
{{ (memberCounts[course.courseId] ?? 0) === 1 ? $t('CoursesView.memberSingular') : $t('CoursesView.memberPlural') }}
</span>
</template>
<span v-else class="text-gray-400 italic">
{{ $t('CoursesView.openToView') }}
</span>
</p>
<div class="mt-auto">
<BaseButton
variant="green"
class="w-full flex items-center justify-center gap-2"
@click.stop="goToDetail(course.courseId)"
>
{{ $t('CoursesView.openDetails') }}
</BaseButton>
</div>
</Card>
</div>
</EntityListState>
<Modal :show="showModal" @close="showModal = false">
<template #header>
<h2 class="text-xl font-semibold">{{ $t('CoursesView.createModal.title') }}</h2>
</template>
<template #body>
<div class="space-y-5">
<p class="text-sm text-gray-500">
{{ $t('CoursesView.createModal.intro') }}
</p>
<div>
<label class="block text-sm font-medium text-gray-700 mb-1.5">
{{ $t('CoursesView.createModal.nameLabel') }}
</label>
<BaseInput v-model="formData.name" :placeholder="$t('CoursesView.createModal.namePlaceholder')" required @keyup.enter="saveCourse" />
</div>
</div>
</template>
<template #footer>
<div class="flex justify-end gap-3">
<BaseButton variant="ghost" @click="showModal = false">
{{ $t('CoursesView.createModal.cancel') }}
</BaseButton>
<BaseButton @click="saveCourse" :disabled="!formData.name">
{{ $t('CoursesView.createModal.create') }}
</BaseButton>
</div>
</template>
</Modal>
<Modal :show="showDeleteModal" @close="closeDeleteModal">
<template #header>
<h2 class="text-xl font-semibold text-red-700">{{ $t('CoursesView.deleteModal.title') }}</h2>
</template>
<template #body>
<div class="space-y-3">
<p class="text-gray-700" v-html="$t('CoursesView.deleteModal.confirmPrompt', { name: courseToDelete?.name })"></p>
<p class="text-sm text-gray-500">
{{ $t('CoursesView.deleteModal.warning') }}
</p>
</div>
</template>
<template #footer>
<div class="flex justify-end gap-3">
<BaseButton variant="ghost" @click="closeDeleteModal" :disabled="isDeleting">
{{ $t('CoursesView.deleteModal.cancel') }}
</BaseButton>
<BaseButton variant="red" @click="confirmDelete" :disabled="isDeleting">
{{ isDeleting ? $t('CoursesView.deleteModal.deleting') : $t('CoursesView.deleteModal.delete') }}
</BaseButton>
</div>
</template>
</Modal>
</div>
</template> |