<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">Plantillas de Documento</h1>
                <p class="text-sm text-gray-500">Fuente de verdad de cotizaciones, contratos, actas y cuentas de cobro generadas por IA</p>
            </div>
            <div class="flex items-center gap-2 mt-3 md:mt-0">
                <select x-model="filtroTipo" @change="loadData()" class="border border-gray-300 rounded p-2 text-sm">
                    <option value="">Todos los tipos</option>
                    <option value="cotizacion">Cotización</option>
                    <option value="contrato">Contrato</option>
                    <option value="acta">Acta</option>
                    <option value="cuenta_cobro">Cuenta de cobro</option>
                </select>
                <button @click="addModal = true" class="bg-[#8eb02f] text-white px-4 py-2 rounded text-sm">+ Nueva</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">Nombre</th>
                        <th class="py-2 px-3">Tipo</th>
                        <th class="py-2 px-3">Versión</th>
                        <th class="py-2 px-3">Estado</th>
                        <th class="py-2 px-3 w-24"></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 font-medium" x-text="d.nombre"></td>
                            <td class="py-2 px-3">
                                <span class="px-2 py-0.5 rounded text-xs font-medium bg-indigo-100 text-indigo-700" x-text="d.tipo"></span>
                            </td>
                            <td class="py-2 px-3" x-text="'v'+d.version"></td>
                            <td class="py-2 px-3">
                                <span class="px-2 py-0.5 rounded text-xs font-medium"
                                    :class="d.activa ? 'bg-green-100 text-green-700' : 'bg-gray-100 text-gray-500'"
                                    x-text="d.activa ? 'Activa' : 'Inactiva'"></span>
                            </td>
                            <td class="py-2 px-3">
                                <div class="flex gap-2">
                                    <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="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="5" class="text-center text-gray-400 py-8">Sin plantillas</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-4xl mx-4 p-6 max-h-[90vh] overflow-y-auto" @click.stop>
            <h2 class="text-lg font-semibold mb-4" x-text="editModal ? 'Editar Plantilla' : 'Nueva Plantilla'"></h2>

            <div class="mb-4 p-3 bg-blue-50 rounded text-xs text-blue-700 leading-6">
                <strong>Variables comunes:</strong>
                <code>&#123;&#123;.Cliente&#125;&#125;</code>,
                <code>&#123;&#123;.Alcance&#125;&#125;</code>,
                <code>&#123;&#123;.Fecha&#125;&#125;</code>,
                <code>&#123;&#123;.EmpresaNombre&#125;&#125;</code>,
                <code>&#123;&#123;.Total&#125;&#125;</code>,
                <code>&#123;&#123;range .Items&#125;&#125;...&#123;&#123;.Descripcion&#125;&#125;...&#123;&#123;end&#125;&#125;</code>
                <span class="block mt-1 text-blue-500">Cada tipo de documento pasa campos adicionales propios (ver /api/v2/spec).</span>
            </div>

            <form @submit.prevent="save()">
                <div class="grid grid-cols-3 gap-3 mb-3">
                    <div>
                        <label class="text-xs font-medium text-gray-600">Nombre *</label>
                        <input x-model="form.nombre" 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">Tipo</label>
                        <select x-model="form.tipo" class="mt-1 w-full border rounded px-3 py-2 text-sm">
                            <option value="cotizacion">Cotización</option>
                            <option value="contrato">Contrato</option>
                            <option value="acta">Acta</option>
                            <option value="cuenta_cobro">Cuenta de cobro</option>
                        </select>
                    </div>
                    <div class="flex items-end gap-2">
                        <label class="flex items-center gap-2 text-sm mb-2">
                            <input type="checkbox" x-model="form.activa" /> Activa
                        </label>
                    </div>
                </div>
                <div>
                    <label class="text-xs font-medium text-gray-600 block mb-1">HTML de la plantilla (Go text/template) *</label>
                    <textarea x-model="form.contenido_html" rows="16"
                        @input.debounce.600ms="validar()"
                        :class="templateError ? 'border-red-400' : ''"
                        class="w-full border rounded px-3 py-2 text-xs font-mono" required></textarea>
                    <p x-show="templateError" x-text="templateError" class="text-red-500 text-xs mt-1"></p>
                </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>
            <p class="font-semibold mb-1">¿Eliminar plantilla?</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: 20, filtroTipo: '',
        addModal: false, editModal: false, deleteModal: false,
        selectedId: null, templateError: '',
        form: { nombre:'', tipo:'cotizacion', contenido_html:'', version:1, activa:true },
        toast: { show:false, msg:'', type:'ok' },

        async init() { await this.loadData(); },

        async loadData() {
            this.loading = true;
            try {
                const { data } = await axios.get(`/app/api/plantillas-documento?page=${this.page}&limit=${this.limit}&tipo=${this.filtroTipo}`);
                this.datos = data.registros || [];
                this.total = data.total || 0;
                this.totalPages = data.totalPages || 1;
            } catch(e) {
                this.showToast(e.response?.data?.error || 'No se pudo cargar la lista', 'error');
            }
            this.loading = false;
        },

        openEdit(d) {
            this.form = { nombre: d.nombre, tipo: d.tipo, contenido_html: d.contenido_html, version: d.version, activa: d.activa };
            this.selectedId = d.ID;
            this.editModal = true;
        },
        openDelete(d) { this.selectedId = d.ID; this.deleteModal = true; },

        async validar() {
            this.templateError = '';
        },

        closeModals() {
            this.addModal = this.editModal = this.deleteModal = false;
            this.selectedId = null;
            this.templateError = '';
            this.form = { nombre:'', tipo:'cotizacion', contenido_html:'', version:1, activa:true };
        },

        async save() {
            this.loading = true;
            try {
                if (this.editModal) {
                    await axios.put(`/app/api/plantillas-documento/${this.selectedId}`, this.form);
                } else {
                    await axios.post('/app/api/plantillas-documento', this.form);
                }
                this.showToast('Guardado');
                this.closeModals();
                await this.loadData();
            } catch(e) {
                this.templateError = e.response?.data?.error || '';
                this.showToast(e.response?.data?.error||'Error', 'error');
            }
            this.loading = false;
        },

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

        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>
