<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">Clientes</h1>
                <p class="text-sm text-gray-500">Gestión de clientes y sus datos de contacto</p>
            </div>
            <div class="flex items-center gap-2 mt-3 md:mt-0">
                <input type="text" placeholder="Buscar..." 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">Nombre</th>
                        <th class="py-2 px-3">Empresa</th>
                        <th class="py-2 px-3">Email</th>
                        <th class="py-2 px-3">Teléfono</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 font-medium" x-text="d.nombre"></td>
                            <td class="py-2 px-3 text-gray-500" x-text="d.empresa||'—'"></td>
                            <td class="py-2 px-3" x-text="d.email"></td>
                            <td class="py-2 px-3" x-text="d.telefono||'—'"></td>
                            <td class="py-2 px-3">
                                <span :class="d.activo ? 'text-green-600' : 'text-red-500'" x-text="d.activo ? 'Activo' : 'Inactivo'"></span>
                            </td>
                            <td class="py-2 px-3">
                                <div class="flex gap-2">
                                    <button @click="openDocs(d)" title="Documentos" 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="M18.375 12.739l-7.693 7.693a4.5 4.5 0 0 1-6.364-6.364l10.94-10.94A3 3 0 1 1 19.5 7.372L8.552 18.32m.009-.01-.01.01m5.699-9.941-7.81 7.81a1.5 1.5 0 0 0 2.112 2.13"/></svg>
                                    </button>
                                    <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="6" 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 Cliente' : 'Nuevo Cliente'"></h2>
            <form @submit.prevent="save()">
                <div class="grid grid-cols-2 gap-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">Empresa</label>
                        <input x-model="form.empresa" class="mt-1 w-full border rounded px-3 py-2 text-sm" />
                    </div>
                    <div>
                        <label class="text-xs font-medium text-gray-600">Email *</label>
                        <input x-model="form.email" type="email" 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">Email CC</label>
                        <input x-model="form.email_cc" type="email" class="mt-1 w-full border rounded px-3 py-2 text-sm" />
                    </div>
                    <div>
                        <label class="text-xs font-medium text-gray-600">Teléfono</label>
                        <input x-model="form.telefono" class="mt-1 w-full border rounded px-3 py-2 text-sm" />
                    </div>
                    <div>
                        <label class="text-xs font-medium text-gray-600">Documento</label>
                        <input x-model="form.documento" class="mt-1 w-full border rounded px-3 py-2 text-sm" />
                    </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.activo" id="activo_cli" />
                        <label for="activo_cli" class="text-sm">Activo</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 cliente?</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>

    <!-- ─── Modal Documentos ──────────────────────────────────────────────── -->
    <div x-show="docsModal" 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-2xl mx-4 flex flex-col max-h-[90vh]" @click.stop>
            <!-- Header -->
            <div class="flex items-center justify-between px-6 py-4 border-b">
                <div>
                    <h2 class="text-lg font-semibold">Documentos</h2>
                    <p class="text-xs text-gray-400" x-text="'Cliente: ' + (docsCliente?.nombre || '')"></p>
                </div>
                <button @click="docsModal=false" class="text-gray-400 hover:text-gray-600">
                    <svg class="w-5 h-5" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M6 18 18 6M6 6l12 12"/></svg>
                </button>
            </div>

            <!-- Cuerpo scrollable -->
            <div class="overflow-y-auto flex-1 px-6 py-4 space-y-4">

                <!-- Formulario de subida -->
                <div class="border rounded-lg p-4 bg-gray-50">
                    <p class="text-sm font-medium text-gray-700 mb-3">Subir documentos</p>

                    <!-- Fecha de expedición compartida -->
                    <div class="mb-3">
                        <label class="text-xs font-medium text-gray-600">Fecha de expedición (opcional, aplica a todos los archivos)</label>
                        <input type="date" x-model="docsUpload.fechaExpedicion"
                            class="mt-1 w-full border rounded px-3 py-2 text-sm" />
                    </div>

                    <!-- Zona de arrastre / selección de archivos -->
                    <div class="border-2 border-dashed border-gray-300 rounded-lg p-6 text-center cursor-pointer hover:border-[#8eb02f] transition-colors"
                        @click="$refs.fileInput.click()"
                        @dragover.prevent
                        @drop.prevent="handleDrop($event)">
                        <svg class="w-8 h-8 mx-auto text-gray-400 mb-2" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M3 16.5v2.25A2.25 2.25 0 0 0 5.25 21h13.5A2.25 2.25 0 0 0 21 18.75V16.5m-13.5-9L12 3m0 0 4.5 4.5M12 3v13.5"/></svg>
                        <p class="text-sm text-gray-500">Haz clic o arrastra archivos aquí</p>
                        <p class="text-xs text-gray-400 mt-1">PDF, Word, Excel, imágenes, ZIP — máx. 20 MB c/u</p>
                        <input type="file" x-ref="fileInput" multiple class="hidden"
                            @change="addFiles($event.target.files)" />
                    </div>

                    <!-- Lista de archivos pendientes -->
                    <template x-if="docsUpload.files.length > 0">
                        <div class="mt-3 space-y-2">
                            <template x-for="(f, i) in docsUpload.files" :key="i">
                                <div class="flex items-center gap-3 bg-white border rounded px-3 py-2 text-sm">
                                    <svg class="w-4 h-4 text-gray-400 shrink-0" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M19.5 14.25v-2.625a3.375 3.375 0 0 0-3.375-3.375h-1.5A1.125 1.125 0 0 1 13.5 7.125v-1.5a3.375 3.375 0 0 0-3.375-3.375H8.25m2.25 0H5.625c-.621 0-1.125.504-1.125 1.125v17.25c0 .621.504 1.125 1.125 1.125h12.75c.621 0 1.125-.504 1.125-1.125V11.25a9 9 0 0 0-9-9Z"/></svg>
                                    <span class="flex-1 truncate" x-text="f.name"></span>
                                    <span class="text-gray-400 text-xs" x-text="formatSize(f.size)"></span>
                                    <button @click="removeFile(i)" class="text-red-400 hover:text-red-600">
                                        <svg class="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M6 18 18 6M6 6l12 12"/></svg>
                                    </button>
                                </div>
                            </template>
                            <button @click="uploadDocs()" :disabled="docsUploading"
                                class="w-full mt-2 bg-[#8eb02f] text-white py-2 rounded text-sm font-medium disabled:opacity-50">
                                <span x-text="docsUploading ? 'Subiendo…' : 'Subir ' + docsUpload.files.length + ' archivo(s)'"></span>
                            </button>
                        </div>
                    </template>
                </div>

                <!-- Lista de documentos guardados -->
                <div>
                    <p class="text-sm font-medium text-gray-700 mb-2">Documentos guardados
                        <span class="text-gray-400 font-normal" x-text="'(' + documentos.length + ')'"></span>
                    </p>

                    <div x-show="docsLoading" class="text-center text-gray-400 text-sm py-4">Cargando…</div>

                    <div x-show="!docsLoading && documentos.length === 0" class="text-center text-gray-400 text-sm py-4">
                        Sin documentos
                    </div>

                    <div class="space-y-2">
                        <template x-for="doc in documentos" :key="doc.ID">
                            <div class="flex items-center gap-3 border rounded px-3 py-2 text-sm hover:bg-gray-50">
                                <svg class="w-4 h-4 text-blue-400 shrink-0" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M19.5 14.25v-2.625a3.375 3.375 0 0 0-3.375-3.375h-1.5A1.125 1.125 0 0 1 13.5 7.125v-1.5a3.375 3.375 0 0 0-3.375-3.375H8.25m2.25 0H5.625c-.621 0-1.125.504-1.125 1.125v17.25c0 .621.504 1.125 1.125 1.125h12.75c.621 0 1.125-.504 1.125-1.125V11.25a9 9 0 0 0-9-9Z"/></svg>
                                <div class="flex-1 min-w-0">
                                    <p class="font-medium truncate" x-text="doc.nombre || doc.original_name"></p>
                                    <p class="text-xs text-gray-400">
                                        <span x-text="formatSize(doc.tamanio)"></span>
                                        <template x-if="doc.fecha_expedicion">
                                            <span> · Exp: <span x-text="fmtDate(doc.fecha_expedicion)"></span></span>
                                        </template>
                                    </p>
                                </div>
                                <a :href="`/app/api/clientes/${docsCliente.ID}/documentos/${doc.ID}/download`"
                                    target="_blank"
                                    class="text-gray-400 hover:text-blue-500" title="Descargar">
                                    <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="M3 16.5v2.25A2.25 2.25 0 0 0 5.25 21h13.5A2.25 2.25 0 0 0 21 18.75V16.5M16.5 12 12 16.5m0 0L7.5 12m4.5 4.5V3"/></svg>
                                </a>
                                <button @click="confirmDeleteDoc(doc)" class="text-gray-400 hover:text-red-500" title="Eliminar">
                                    <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>
                        </template>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Confirm eliminar documento -->
    <div x-show="deleteDocModal" x-cloak class="fixed inset-0 z-[60] 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 documento?</p>
            <p class="text-sm text-gray-400 mb-5" x-text="selectedDoc?.nombre || selectedDoc?.original_name"></p>
            <div class="flex justify-center gap-3">
                <button @click="deleteDocModal=false" class="px-4 py-2 border rounded text-sm">Cancelar</button>
                <button @click="deleteDoc()" 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: '',
        addModal: false, editModal: false, deleteModal: false,
        selectedId: null,
        form: { nombre:'', empresa:'', email:'', email_cc:'', telefono:'', documento:'', notas:'', activo:true },
        toast: { show: false, msg: '', type: 'ok' },

        // ── Documentos ──────────────────────────────────────────────────────
        docsModal: false,
        docsCliente: null,
        documentos: [],
        docsLoading: false,
        docsUploading: false,
        docsUpload: { fechaExpedicion: '', files: [] },
        deleteDocModal: false,
        selectedDoc: null,

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

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

        openEdit(d) {
            this.form = { nombre: d.nombre, empresa: d.empresa, email: d.email, email_cc: d.email_cc, telefono: d.telefono, documento: d.documento, notas: d.notas, activo: d.activo };
            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 = { nombre:'', empresa:'', email:'', email_cc:'', telefono:'', documento:'', notas:'', activo:true };
        },

        async save() {
            this.loading = true;
            try {
                if (this.editModal) {
                    await axios.put(`/app/api/clientes/${this.selectedId}`, this.form);
                } else {
                    await axios.post('/app/api/clientes', this.form);
                }
                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/clientes/${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);
        },

        // ── Documentos: métodos ─────────────────────────────────────────────
        async openDocs(d) {
            this.docsCliente = d;
            this.docsModal = true;
            this.docsUpload = { fechaExpedicion: '', files: [] };
            await this.loadDocs();
        },

        async loadDocs() {
            this.docsLoading = true;
            try {
                const { data } = await axios.get(`/app/api/clientes/${this.docsCliente.ID}/documentos`);
                this.documentos = data || [];
            } catch(e) {
                this.showToast('Error cargando documentos', 'error');
            }
            this.docsLoading = false;
        },

        addFiles(fileList) {
            for (const f of fileList) {
                if (!this.docsUpload.files.find(x => x.name === f.name && x.size === f.size)) {
                    this.docsUpload.files.push(f);
                }
            }
        },

        handleDrop(event) {
            this.addFiles(event.dataTransfer.files);
        },

        removeFile(i) {
            this.docsUpload.files.splice(i, 1);
        },

        async uploadDocs() {
            if (this.docsUpload.files.length === 0) return;
            this.docsUploading = true;
            try {
                const fd = new FormData();
                for (const f of this.docsUpload.files) {
                    fd.append('archivos', f);
                }
                if (this.docsUpload.fechaExpedicion) {
                    fd.append('fecha_expedicion', this.docsUpload.fechaExpedicion);
                }
                await axios.post(`/app/api/clientes/${this.docsCliente.ID}/documentos`, fd, {
                    headers: { 'Content-Type': 'multipart/form-data' }
                });
                this.showToast('Archivos subidos correctamente');
                this.docsUpload.files = [];
                this.docsUpload.fechaExpedicion = '';
                this.$refs.fileInput && (this.$refs.fileInput.value = '');
                await this.loadDocs();
            } catch(e) {
                this.showToast(e.response?.data?.error || 'Error al subir', 'error');
            }
            this.docsUploading = false;
        },

        confirmDeleteDoc(doc) {
            this.selectedDoc = doc;
            this.deleteDocModal = true;
        },

        async deleteDoc() {
            try {
                await axios.delete(`/app/api/clientes/${this.docsCliente.ID}/documentos/${this.selectedDoc.ID}`);
                this.showToast('Documento eliminado');
                this.deleteDocModal = false;
                this.selectedDoc = null;
                await this.loadDocs();
            } catch(e) {
                this.showToast(e.response?.data?.error || 'Error al eliminar', 'error');
            }
        },

        formatSize(bytes) {
            if (!bytes) return '0 B';
            if (bytes < 1024) return bytes + ' B';
            if (bytes < 1024*1024) return (bytes/1024).toFixed(1) + ' KB';
            return (bytes/(1024*1024)).toFixed(1) + ' MB';
        },

        fmtDate(iso) {
            if (!iso) return '';
            return iso.substring(0, 10);
        },
    }));
});
</script>
