/**
 * EmployeeSelector Component
 *
 * Bottom sheet modal for searching and selecting employees.
 * Supports lazy word search (e.g., "fab her" matches "Fabian Herbst").
 */

export default {
    name: 'EmployeeSelector',
    emits: ['select', 'close'],
    props: {
        show: {
            type: Boolean,
            default: false
        },
        excludeIds: {
            type: Array,
            default: () => []
        }
    },

    setup(props, { emit }) {
        const { ref, computed, watch } = Vue;

        const searchQuery = ref('');
        const employees = ref([]);
        const isLoading = ref(false);
        const searchTimeout = ref(null);

        // Filter out already selected employees
        const filteredEmployees = computed(() => {
            return employees.value.filter(emp => !props.excludeIds.includes(emp.id));
        });

        // Search employees when query changes
        watch(searchQuery, (newVal) => {
            if (searchTimeout.value) {
                clearTimeout(searchTimeout.value);
            }

            // Debounce search
            searchTimeout.value = setTimeout(() => {
                searchEmployees(newVal);
            }, 300);
        });

        // Load employees when modal opens
        watch(() => props.show, (newVal) => {
            if (newVal) {
                searchQuery.value = '';
                searchEmployees('');
            }
        });

        const searchEmployees = async (query) => {
            isLoading.value = true;
            try {
                const params = new URLSearchParams();
                if (query) params.append('query', query);

                const response = await fetch(`/MobileApp/Lager/ShippingNote/searchEmployees?${params}`, {
                    credentials: 'include'
                });
                const data = await response.json();

                if (data.success) {
                    employees.value = data.employees;
                }
            } catch (error) {
                console.error('Error searching employees:', error);
            } finally {
                isLoading.value = false;
            }
        };

        const selectEmployee = (employee) => {
            emit('select', employee);
            emit('close');
        };

        const close = () => {
            emit('close');
        };

        return {
            searchQuery,
            filteredEmployees,
            isLoading,
            selectEmployee,
            close
        };
    },

    template: `
        <!-- Bottom Sheet Modal -->
        <teleport to="body">
            <transition name="fade">
                <div v-if="show" class="fixed inset-0 z-50">
                    <!-- Backdrop -->
                    <div class="absolute inset-0 bg-black/50" @click="close"></div>

                    <!-- Sheet -->
                    <transition name="slide-up-sheet">
                        <div v-if="show" class="absolute bottom-0 left-0 right-0 bg-white dark:bg-slate-800 rounded-t-2xl shadow-xl max-h-[85vh] flex flex-col">
                            <!-- Handle -->
                            <div class="flex justify-center pt-2 pb-1 flex-shrink-0">
                                <div class="w-10 h-1 bg-slate-300 dark:bg-slate-600 rounded-full"></div>
                            </div>

                            <!-- Header -->
                            <div class="px-4 pb-3 border-b border-slate-100 dark:border-slate-700 flex-shrink-0">
                                <h3 class="text-lg font-semibold text-slate-800 dark:text-white text-center">
                                    Mitarbeiter auswählen
                                </h3>
                            </div>

                            <!-- Search Input -->
                            <div class="px-4 py-3 flex-shrink-0">
                                <div class="relative">
                                    <svg xmlns="http://www.w3.org/2000/svg" class="absolute left-3 top-1/2 -translate-y-1/2 h-5 w-5 text-slate-400" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z" />
                                    </svg>
                                    <input
                                        v-model="searchQuery"
                                        type="text"
                                        placeholder="Name suchen..."
                                        class="w-full pl-10 pr-4 py-3 bg-slate-100 dark:bg-slate-700 rounded-xl text-slate-800 dark:text-white placeholder-slate-400 focus:outline-none focus:ring-2 focus:ring-primary"
                                        autofocus
                                    >
                                </div>
                            </div>

                            <!-- Results List -->
                            <div class="flex-1 overflow-y-auto px-4 pb-6">
                                <!-- Loading -->
                                <div v-if="isLoading" class="py-8 text-center">
                                    <div class="animate-spin w-8 h-8 border-3 border-primary border-t-transparent rounded-full mx-auto"></div>
                                </div>

                                <!-- Empty State -->
                                <div v-else-if="filteredEmployees.length === 0" class="py-8 text-center text-slate-500 dark:text-slate-400">
                                    <svg xmlns="http://www.w3.org/2000/svg" class="h-12 w-12 mx-auto mb-3 text-slate-300 dark:text-slate-600" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17 20h5v-2a3 3 0 00-5.356-1.857M17 20H7m10 0v-2c0-.656-.126-1.283-.356-1.857M7 20H2v-2a3 3 0 015.356-1.857M7 20v-2c0-.656.126-1.283.356-1.857m0 0a5.002 5.002 0 019.288 0M15 7a3 3 0 11-6 0 3 3 0 016 0zm6 3a2 2 0 11-4 0 2 2 0 014 0zM7 10a2 2 0 11-4 0 2 2 0 014 0z" />
                                    </svg>
                                    <p>Keine Mitarbeiter gefunden</p>
                                </div>

                                <!-- Employee List -->
                                <div v-else class="space-y-2">
                                    <button
                                        v-for="emp in filteredEmployees"
                                        :key="emp.id"
                                        @click="selectEmployee(emp)"
                                        class="w-full flex items-center p-3 bg-slate-50 dark:bg-slate-700/50 rounded-xl hover:bg-slate-100 dark:hover:bg-slate-700 transition text-left"
                                    >
                                        <!-- Avatar -->
                                        <div class="w-10 h-10 bg-primary/10 rounded-full flex items-center justify-center flex-shrink-0">
                                            <span class="text-primary font-semibold text-sm">
                                                {{ emp.name.charAt(0).toUpperCase() }}
                                            </span>
                                        </div>

                                        <!-- Info -->
                                        <div class="ml-3 flex-1 min-w-0">
                                            <p class="font-medium text-slate-800 dark:text-white truncate">
                                                {{ emp.name }}
                                            </p>
                                            <p v-if="emp.email" class="text-sm text-slate-500 dark:text-slate-400 truncate">
                                                {{ emp.email }}
                                            </p>
                                        </div>

                                        <!-- Select Icon -->
                                        <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5 text-slate-400 flex-shrink-0" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4v16m8-8H4" />
                                        </svg>
                                    </button>
                                </div>
                            </div>

                            <!-- Safe area padding for iOS -->
                            <div class="h-6 flex-shrink-0"></div>
                        </div>
                    </transition>
                </div>
            </transition>
        </teleport>
    `
};