<div x-data="app" class="bg-white rounded-lg shadow">
    <div x-show="loading" class="fixed inset-0 bg-gray-800 bg-opacity-75 flex justify-center items-center z-50">
        <img src="../img/loading.gif" alt="Cargando..." class="w-16 h-16" />
    </div>

    <div class="container mx-auto p-6 w-full">
        <div class="justify-between items-center w-full md:flex mb-4">
            <div>
                <h1 class="text-2xl font-bold mb-1">Contratos</h1>
                <p class="text-sm text-gray-500">Gestión de contratos y vencimientos</p>
            </div>
            <div class="flex items-center gap-2 mt-3 md:mt-0 flex-wrap">
                <select x-model="filtroEstado" @change="loadData()" class="border border-gray-300 rounded p-2 text-sm">
                    <option value="">Todos los estados</option>
                    <option value="activo">Activo</option>
                    <option value="vencido">Vencido</option>
                    <option value="cancelado">Cancelado</option>
                    <option value="renovado">Renovado</option>
                </select>
                <input type="text" placeholder="Buscar cliente..." class="border border-gray-300 rounded p-2 text-sm"
                    x-model="search" @input.debounce.400ms="loadData()" />
                <button @click="addModal = true" class="bg-[#8eb02f] text-white px-4 py-2 rounded text-sm">+ Nuevo</button>
            </div>
        </div>

        <div class="overflow-x-auto">
            <table class="table-auto w-full text-sm">
                <thead class="text-left border-b border-gray-200 bg-gray-50">
                    <tr>
                        <th class="py-2 px-3">Cliente</th>
                        <th class="py-2 px-3">Servicios</th>
                        <th class="py-2 px-3">Vencimiento</th>
                        <th class="py-2 px-3">Días</th>
                        <th class="py-2 px-3">Precio</th>
                        <th class="py-2 px-3">Estado</th>
                        <th class="py-2 px-3 w-32"></th>
                    </tr>
                </thead>
                <tbody class="text-gray-600">
                    <template x-for="d in datos" :key="d.ID">
                        <tr class="hover:bg-gray-50 border-b border-gray-100">
                            <td class="py-2 px-3">
                                <div class="font-medium" x-text="d.cliente?.nombre||'—'"></div>
                                <div class="text-xs text-gray-400" x-text="d.cliente?.empresa||''"></div>
                            </td>
                            <td class="py-2 px-3">
                                <template x-for="s in (d.servicios||[])" :key="s.ID">
                                    <span class="inline-block text-xs bg-gray-100 rounded px-1.5 py-0.5 mr-1 mb-0.5" x-text="s.nombre"></span>
                                </template>
                                <span x-show="!d.servicios||d.servicios.length===0" class="text-gray-400">—</span>
                            </td>
                            <td class="py-2 px-3" x-text="fmtDate(d.fecha_vencimiento)"></td>
                            <td class="py-2 px-3">
                                <span class="px-2 py-0.5 rounded text-xs font-semibold"
                                    :class="d.urgencia==='rojo' ? 'bg-red-100 text-red-700' : d.urgencia==='amarillo' ? 'bg-yellow-100 text-yellow-700' : 'bg-green-100 text-green-700'"
                                    x-text="d.dias_restantes <= 0 ? 'Vencido' : d.dias_restantes+' días'"></span>
                            </td>
                            <td class="py-2 px-3" x-text="Number(d.precio_acordado).toFixed(2)"></td>
                            <td class="py-2 px-3">
                                <span class="px-2 py-0.5 rounded text-xs font-medium"
                                    :class="{
                                        'bg-green-100 text-green-700': d.estado==='activo',
                                        'bg-red-100 text-red-700': d.estado==='vencido',
                                        'bg-gray-100 text-gray-600': d.estado==='cancelado',
                                        'bg-blue-100 text-blue-700': d.estado==='renovado'
                                    }"
                                    x-text="d.estado"></span>
                            </td>
                            <td class="py-2 px-3">
                                <div class="flex gap-1.5">
                                    <button @click="openEdit(d)" title="Editar" class="text-gray-400 hover:text-[#8eb02f]">
                                        <svg class="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="m16.862 4.487 1.687-1.688a1.875 1.875 0 1 1 2.652 2.652L10.582 16.07a4.5 4.5 0 0 1-1.897 1.13L6 18l.8-2.685a4.5 4.5 0 0 1 1.13-1.897l8.932-8.931Zm0 0L19.5 7.125M18 14v4.75A2.25 2.25 0 0 1 15.75 21H5.25A2.25 2.25 0 0 1 3 18.75V8.25A2.25 2.25 0 0 1 5.25 6H10"/></svg>
                                    </button>
                                    <button @click="renovar(d)" title="Renovar" x-show="d.estado==='activo'" class="text-gray-400 hover:text-blue-500">
                                        <svg class="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M16.023 9.348h4.992v-.001M2.985 19.644v-4.992m0 0h4.992m-4.993 0 3.181 3.183a8.25 8.25 0 0 0 13.803-3.7M4.031 9.865a8.25 8.25 0 0 1 13.803-3.7l3.181 3.182m0-4.991v4.99"/></svg>
                                    </button>
                                    <button @click="enviarCorreo(d)" title="Enviar correo" class="text-gray-400 hover:text-purple-500">
                                        <svg class="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M21.75 6.75v10.5a2.25 2.25 0 0 1-2.25 2.25h-15a2.25 2.25 0 0 1-2.25-2.25V6.75m19.5 0A2.25 2.25 0 0 0 19.5 4.5h-15a2.25 2.25 0 0 0-2.25 2.25m19.5 0v.243a2.25 2.25 0 0 1-1.07 1.916l-7.5 4.615a2.25 2.25 0 0 1-2.36 0L3.32 8.91a2.25 2.25 0 0 1-1.07-1.916V6.75"/></svg>
                                    </button>
                                    <button @click="openDelete(d)" title="Eliminar" class="text-gray-400 hover:text-red-500">
                                        <svg class="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="m14.74 9-.346 9m-4.788 0L9.26 9m9.968-3.21c.342.052.682.107 1.022.166m-1.022-.165L18.16 19.673a2.25 2.25 0 0 1-2.244 2.077H8.084a2.25 2.25 0 0 1-2.244-2.077L4.772 5.79m14.456 0a48.108 48.108 0 0 0-3.478-.397m-12 .562c.34-.059.68-.114 1.022-.165m0 0a48.11 48.11 0 0 1 3.478-.397m7.5 0v-.916c0-1.18-.91-2.164-2.09-2.201a51.964 51.964 0 0 0-3.32 0c-1.18.037-2.09 1.022-2.09 2.201v.916m7.5 0a48.667 48.667 0 0 0-7.5 0"/></svg>
                                    </button>
                                </div>
                            </td>
                        </tr>
                    </template>
                    <tr x-show="!loading && datos.length===0">
                        <td colspan="7" class="text-center text-gray-400 py-8">Sin registros</td>
                    </tr>
                </tbody>
            </table>
        </div>

        <div class="flex items-center justify-between mt-4 text-sm text-gray-500">
            <span>Total: <span x-text="total"></span></span>
            <div class="flex gap-1">
                <button @click="prevPage()" :disabled="page===1" class="px-3 py-1 rounded border disabled:opacity-40">‹</button>
                <span class="px-3 py-1" x-text="'Pág. '+page+' / '+totalPages"></span>
                <button @click="nextPage()" :disabled="page>=totalPages" class="px-3 py-1 rounded border disabled:opacity-40">›</button>
            </div>
        </div>
    </div>

    <!-- Modal Crear / Editar -->
    <div x-show="addModal || editModal" x-cloak class="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
        <div class="bg-white rounded-lg shadow-xl w-full max-w-lg mx-4 p-6" @click.stop>
            <h2 class="text-lg font-semibold mb-4" x-text="editModal ? 'Editar Contrato' : 'Nuevo Contrato'"></h2>
            <form @submit.prevent="save()">
                <div class="grid grid-cols-2 gap-3">
                    <div class="col-span-2" x-show="!editModal">
                        <label class="text-xs font-medium text-gray-600">Cliente *</label>
                        <select x-model="form.cliente_id" required class="mt-1 w-full border rounded px-3 py-2 text-sm">
                            <option value="">Seleccionar...</option>
                            <template x-for="c in clientes" :key="c.ID">
                                <option :value="c.ID" x-text="c.nombre + (c.empresa ? ' — '+c.empresa : '')"></option>
                            </template>
                        </select>
                    </div>
                    <div class="col-span-2">
                        <label class="text-xs font-medium text-gray-600">Servicios <span class="font-normal text-gray-400">(uno o varios)</span></label>
                        <div class="mt-1 border rounded max-h-36 overflow-y-auto divide-y text-sm">
                            <template x-for="s in servicios" :key="s.ID">
                                <label class="flex items-center gap-2 px-3 py-1.5 hover:bg-gray-50 cursor-pointer">
                                    <input type="checkbox" :value="s.ID"
                                        :checked="form.servicio_ids.includes(s.ID)"
                                        @change="toggleServicio(s.ID)" />
                                    <span class="flex-1" x-text="s.nombre"></span>
                                    <span class="text-xs text-gray-400" x-text="s.moneda+' '+Number(s.precio).toFixed(2)"></span>
                                </label>
                            </template>
                            <div x-show="servicios.length===0" class="text-xs text-gray-400 px-3 py-2">Sin servicios disponibles</div>
                        </div>
                    </div>
                    <div>
                        <label class="text-xs font-medium text-gray-600">Fecha inicio *</label>
                        <input x-model="form.fecha_inicio" type="date" required class="mt-1 w-full border rounded px-3 py-2 text-sm" />
                    </div>
                    <div>
                        <label class="text-xs font-medium text-gray-600">Fecha vencimiento *</label>
                        <input x-model="form.fecha_vencimiento" type="date" required class="mt-1 w-full border rounded px-3 py-2 text-sm" />
                    </div>
                    <div>
                        <label class="text-xs font-medium text-gray-600">Precio acordado</label>
                        <input x-model="form.precio_acordado" type="number" step="0.01" class="mt-1 w-full border rounded px-3 py-2 text-sm" />
                        <p class="text-xs text-gray-400 mt-0.5" x-show="precioSugerido > 0">
                            Sugerido: <span class="font-medium text-gray-600" x-text="precioSugerido.toFixed(2)"></span>
                        </p>
                    </div>
                    <div x-show="editModal">
                        <label class="text-xs font-medium text-gray-600">Estado</label>
                        <select x-model="form.estado" class="mt-1 w-full border rounded px-3 py-2 text-sm">
                            <option value="activo">Activo</option>
                            <option value="vencido">Vencido</option>
                            <option value="cancelado">Cancelado</option>
                            <option value="renovado">Renovado</option>
                        </select>
                    </div>
                    <div class="col-span-2">
                        <label class="text-xs font-medium text-gray-600">Notas</label>
                        <textarea x-model="form.notas" rows="2" class="mt-1 w-full border rounded px-3 py-2 text-sm"></textarea>
                    </div>
                    <div class="flex items-center gap-2">
                        <input type="checkbox" x-model="form.auto_renovar" id="auto_ren" />
                        <label for="auto_ren" class="text-sm">Auto-renovar</label>
                    </div>
                </div>
                <div class="flex justify-end gap-2 mt-5">
                    <button type="button" @click="closeModals()" class="px-4 py-2 border rounded text-sm">Cancelar</button>
                    <button type="submit" class="px-4 py-2 bg-[#8eb02f] text-white rounded text-sm" :disabled="loading">
                        <span x-text="loading ? 'Guardando…' : 'Guardar'"></span>
                    </button>
                </div>
            </form>
        </div>
    </div>

    <!-- Modal Eliminar -->
    <div x-show="deleteModal" x-cloak class="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
        <div class="bg-white rounded-lg shadow-xl p-6 w-full max-w-sm mx-4 text-center" @click.stop>
            <svg class="w-12 h-12 text-red-400 mx-auto mb-3" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M12 9v3.75m-9.303 3.376c-.866 1.5.217 3.374 1.948 3.374h14.71c1.73 0 2.813-1.874 1.948-3.374L13.949 3.378c-.866-1.5-3.032-1.5-3.898 0L2.697 16.126ZM12 15.75h.007v.008H12v-.008Z"/></svg>
            <p class="font-semibold mb-1">¿Eliminar contrato?</p>
            <p class="text-sm text-gray-400 mb-5">Esta acción no se puede deshacer.</p>
            <div class="flex justify-center gap-3">
                <button @click="closeModals()" class="px-4 py-2 border rounded text-sm">Cancelar</button>
                <button @click="deleteItem()" class="px-4 py-2 bg-red-500 text-white rounded text-sm">Eliminar</button>
            </div>
        </div>
    </div>

    <div x-show="toast.show" x-cloak x-transition
        class="fixed bottom-4 right-4 z-[100] px-4 py-3 rounded shadow-lg text-sm text-white"
        :class="toast.type==='error' ? 'bg-red-500' : 'bg-[#8eb02f]'"
        x-text="toast.msg"></div>
</div>

<script>
document.addEventListener('alpine:init', () => {
    Alpine.data('app', () => ({
        loading: false,
        datos: [], total: 0, totalPages: 1, page: 1, limit: 10,
        search: '', filtroEstado: '',
        addModal: false, editModal: false, deleteModal: false,
        clientes: [], servicios: [],
        selectedId: null,
        form: { cliente_id:'', servicio_ids:[], fecha_inicio:'', fecha_vencimiento:'', precio_acordado:0, estado:'activo', auto_renovar:false, notas:'' },
        toast: { show: false, msg: '', type: 'ok' },

        async init() {
            await Promise.all([this.loadData(), this.loadSelects()]);
        },

        async loadData() {
            this.loading = true;
            const { data } = await axios.get(`/app/api/contratos?page=${this.page}&limit=${this.limit}&search=${this.search}&estado=${this.filtroEstado}`);
            this.datos = data.registros || [];
            this.total = data.total || 0;
            this.totalPages = data.totalPages || 1;
            this.loading = false;
        },

        async loadSelects() {
            try {
                const [c, s] = await Promise.all([
                    axios.get('/app/api/clientes/select'),
                    axios.get('/app/api/servicios/select'),
                ]);
                this.clientes = Array.isArray(c.data) ? c.data : (c.data.registros || []);
                this.servicios = Array.isArray(s.data) ? s.data : (s.data.registros || []);
            } catch(e) {
                this.showToast('Error cargando listas: ' + (e.response?.data?.error || e.message), 'error');
            }
        },

        get precioSugerido() {
            return this.servicios
                .filter(s => (this.form.servicio_ids || []).includes(s.ID))
                .reduce((acc, s) => acc + (parseFloat(s.precio) || 0), 0);
        },
        toggleServicio(id) {
            const idx = (this.form.servicio_ids || []).indexOf(id);
            if (idx === -1) {
                this.form.servicio_ids.push(id);
            } else {
                this.form.servicio_ids.splice(idx, 1);
            }
            this.form.precio_acordado = this.precioSugerido;
        },

        openEdit(d) {
            this.form = {
                cliente_id: d.cliente_id,
                servicio_ids: (d.servicios || []).map(s => s.ID),
                fecha_inicio: d.fecha_inicio ? d.fecha_inicio.substring(0,10) : '',
                fecha_vencimiento: d.fecha_vencimiento ? d.fecha_vencimiento.substring(0,10) : '',
                precio_acordado: d.precio_acordado,
                estado: d.estado,
                auto_renovar: d.auto_renovar,
                notas: d.notas
            };
            this.selectedId = d.ID;
            this.editModal = true;
        },
        openDelete(d) { this.selectedId = d.ID; this.deleteModal = true; },
        closeModals() {
            this.addModal = this.editModal = this.deleteModal = false;
            this.selectedId = null;
            this.form = { cliente_id:'', servicio_ids:[], fecha_inicio:'', fecha_vencimiento:'', precio_acordado:0, estado:'activo', auto_renovar:false, notas:'' };
        },

        async save() {
            this.loading = true;
            try {
                const payload = {
                    ...this.form,
                    cliente_id: parseInt(this.form.cliente_id) || 0,
                    servicio_id: parseInt(this.form.servicio_id) || 0,
                    precio_acordado: parseFloat(this.form.precio_acordado) || 0,
                };
                if (this.editModal) {
                    await axios.put(`/app/api/contratos/${this.selectedId}`, payload);
                } else {
                    await axios.post('/app/api/contratos', payload);
                }
                this.showToast('Guardado correctamente');
                this.closeModals();
                await this.loadData();
            } catch(e) { this.showToast(e.response?.data?.error||'Error', 'error'); }
            this.loading = false;
        },

        async deleteItem() {
            this.loading = true;
            try {
                await axios.delete(`/app/api/contratos/${this.selectedId}`);
                this.showToast('Eliminado');
                this.closeModals();
                await this.loadData();
            } catch(e) { this.showToast(e.response?.data?.error||'Error', 'error'); }
            this.loading = false;
        },

        async renovar(d) {
            if (!confirm(`¿Renovar el contrato de ${d.cliente?.nombre}?`)) return;
            try {
                await axios.post(`/app/api/contratos/${d.ID}/renovar`);
                this.showToast('Contrato renovado');
                await this.loadData();
            } catch(e) { this.showToast(e.response?.data?.error||'Error', 'error'); }
        },

        async enviarCorreo(d) {
            if (!confirm(`¿Enviar correo de aviso a ${d.cliente?.email}?`)) return;
            try {
                await axios.post(`/app/api/contratos/${d.ID}/enviar-correo`);
                this.showToast('Correo enviado');
            } catch(e) { this.showToast(e.response?.data?.error||'Error', 'error'); }
        },

        fmtDate(raw) {
            if (!raw) return '—';
            return new Date(raw).toLocaleDateString('es-ES', { day:'2-digit', month:'2-digit', year:'numeric' });
        },
        prevPage() { if(this.page>1){ this.page--; this.loadData(); } },
        nextPage() { if(this.page<this.totalPages){ this.page++; this.loadData(); } },
        showToast(msg, type='ok') {
            this.toast = { show: true, msg, type };
            setTimeout(() => this.toast.show = false, 3000);
        }
    }));
});
</script>
