<template>
  <div class="max-w-5xl mx-auto p-8 bg-gradient-to-b from-pink-50 to-blue-50 shadow-lg rounded-xl">
    <!-- Judul Form -->
    <div class="text-center mb-10">
      <h1 class="text-3xl md:text-4xl font-extrabold text-purple-700 drop-shadow-sm">
        🎂 Form Pemesanan Undangan Ulang Tahun 🎉
      </h1>
      <p class="text-gray-600 mt-2">
        Isi data berikut dengan lengkap untuk melakukan pemesanan undangan ulang tahun.
      </p>
    </div>

    <form @submit.prevent="submitForm" class="space-y-10">

      <!-- Tema Undangan -->
      <section class="p-6 bg-white rounded-xl shadow-sm border border-gray-200">
        <h2 class="text-lg font-bold text-gray-800 mb-4 flex items-center gap-2">
          <span class="w-1.5 h-6 bg-blue-600 rounded-full"></span> Tema Undangan
        </h2>
        <div class="grid grid-cols-2 md:grid-cols-4 gap-4">
          <input :value="form.nama_template" type="text" placeholder="Nama Template" class="input-readonly" readonly />
          <input :value="form.kategori" type="text" placeholder="Kategori" class="input-readonly" readonly />
          <input :value="form.harga" type="text" placeholder="Harga" class="input-readonly" readonly />
          <input :value="form.tanggal_pemesanan" type="text" placeholder="Tanggal Pemesanan" class="input-readonly" readonly />
        </div>
      </section>

      <!-- Pemesan -->
      <section class="p-6 bg-white rounded-xl shadow-sm border border-gray-200">
        <h2 class="text-lg font-bold text-gray-800 mb-4 flex items-center gap-2">
          <span class="w-1.5 h-6 bg-blue-600 rounded-full"></span> Pemesan Undangan
        </h2>
        <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
          <input v-model="form.nama_pemesan" type="text" placeholder="Nama Pemesan" class="input" required />
          <input v-model="form.no_hp" type="text" placeholder="No. WhatsApp" class="input" required />
          <input v-model="form.email" type="email" placeholder="Email" class="input md:col-span-2" required />
        </div>
      </section>

      <!-- Data Anak -->
      <section class="p-6 bg-white rounded-xl shadow-sm border border-gray-200">
        <h2 class="text-lg font-bold text-gray-800 mb-4 flex items-center gap-2">
          <span class="w-1.5 h-6 bg-blue-600 rounded-full"></span> Data Anak
        </h2>
        <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
          <input v-model="form.nama_lengkap_anak" type="text" placeholder="Nama Lengkap Anak" class="input" required />
          <input v-model="form.nama_panggilan_anak" type="text" placeholder="Nama Panggilan Anak" class="input" required />
          <input v-model="form.bapak_anak" type="text" placeholder="Nama Bapak" class="input" required />
          <input v-model="form.ibu_anak" type="text" placeholder="Nama Ibu" class="input" required />
          <input v-model="form.umur_dirayakan" type="text" placeholder="Ulang Tahun ke-" class="input" required />
          <input v-model="form.anak_ke" type="text" placeholder="Anak ke-" class="input" required />
        </div>
      </section>

      <!-- Jadwal Acara -->
      <section class="p-6 bg-white rounded-xl shadow-sm border border-gray-200">
        <h2 class="text-lg font-bold text-gray-800 mb-4 flex items-center gap-2">
          <span class="w-1.5 h-6 bg-blue-600 rounded-full"></span> Jadwal Acara
        </h2>
        <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
          <input v-model="form.hari_tanggal_acara" type="date" class="input" required />
          <input v-model="form.waktu_acara" type="text" placeholder="Waktu Acara (Contoh: 15:00 - Selesai)" class="input" required />
          <textarea v-model="form.alamat_acara" rows="3" placeholder="Alamat Lengkap Acara" class="input md:col-span-2" required></textarea>
          <input v-model="form.maps_acara" type="text" placeholder="Link Google Maps (Opsional)" class="input md:col-span-2" />
        </div>
      </section>

      <!-- Informasi Tambahan -->
      <section class="p-6 bg-white rounded-xl shadow-sm border border-gray-200">
        <h2 class="text-lg font-bold text-gray-800 mb-4 flex items-center gap-2">
          <span class="w-1.5 h-6 bg-blue-600 rounded-full"></span> Informasi Tambahan
        </h2>
        <input v-model="form.link_musik" type="text" placeholder="Link Musik Latar (Opsional)" class="input" />
      </section>

     <div class="p-6 bg-white rounded-xl shadow-sm border border-gray-200">
  <h2 class="text-lg font-bold text-gray-800 mb-4">Galeri (max 5 gambar)</h2>
  <input type="file" multiple accept="image/*" @change="handleFileUpload" class="hidden" id="gallery-upload" />
  <div class="grid grid-cols-2 md:grid-cols-3 gap-3">
    <div v-for="(img, i) in previewImages" :key="i" class="relative w-full aspect-square rounded-lg overflow-hidden shadow-sm group">
      <img :src="img" alt="Preview" class="object-cover w-full h-full" />
      <button 
        type="button"
        @click="removeImage(i)"  
        class="absolute top-1 right-1 bg-red-600 text-white rounded-full w-6 h-6 flex items-center justify-center opacity-0 group-hover:opacity-100 transition-opacity font-bold"
        aria-label="Hapus gambar" 
      >
        &times;
      </button>
    </div>
    <label v-if="previewImages.length < 5" for="gallery-upload" class="flex items-center justify-center w-full aspect-square bg-gray-50 border-2 border-dashed border-gray-300 rounded-lg cursor-pointer hover:bg-gray-100 transition">
  <svg xmlns="http://www.w3.org/2000/svg" class="h-10 w-10 text-gray-400" fill="none" viewBox="0 0 24 24" stroke="currentColor">
    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4v16m8-8H4" />
  </svg>
</label>
        </div>
        </div>
        </form>

    <!-- Submit -->
    <div class="mt-10 text-center">
      <button @click="submitForm" class="bg-blue-600 text-white px-10 py-3 rounded-xl font-semibold shadow-md hover:bg-blue-700 hover:shadow-lg transition" :disabled="loading">
        {{ loading ? "Mengirim..." : "Kirim & Konfirmasi Admin" }}
      </button>
    </div>

    <!-- Alert -->
    <div v-if="success" class="mt-6 p-4 text-green-800 bg-green-100 rounded-lg text-center font-medium">✅ Form berhasil dikirim!</div>
    <div v-if="error" class="mt-6 p-4 text-red-800 bg-red-100 rounded-lg text-center font-medium">❌ Gagal mengirim form. Pastikan semua data yang wajib diisi sudah lengkap.</div>
  </div>
</template>


<script setup>
import { ref, onMounted } from "vue";
import { useRoute } from "vue-router";

const route = useRoute();

// 1. STRUKTUR DATA DISESUAIKAN DENGAN BACKEND
const form = ref({
  template_id: "",
  nama_template: "",
  kategori: "",
  harga: "",
  tanggal_pemesanan: new Date().toLocaleDateString('id-ID', { year: 'numeric', month: 'long', day: 'numeric' }),

  nama_pemesan: "",
  no_hp: "",
  email: "",

  nama_lengkap_anak: "",
  nama_panggilan_anak: "",
  bapak_anak: "",
  ibu_anak: "",
  umur_dirayakan: "", 
  anak_ke: "",        
  hari_tanggal_acara: "",
  waktu_acara: "",
  alamat_acara: "",
  maps_acara: "",

  link_musik: "",
  galeri: [],
});

const previewImages = ref([]);
const loading = ref(false);
const success = ref(false);
const error = ref(false);

onMounted(async () => {
  if (route.query.template_id) {
    try {
      const template = await $fetch(`http://localhost:8000/api/templates/${route.query.template_id}`);
      form.value.template_id = template.id;
      form.value.nama_template = template.nama_template;
      form.value.kategori = template.kategori?.nama || "-";
      form.value.harga = new Intl.NumberFormat('id-ID', { style: 'currency', currency: 'IDR' }).format(template.harga);
    } catch (err) {
      console.error("Gagal ambil template", err);
    }
  }
});

// FUNGSI UNTUK MENAMBAH GAMBAR
const handleFileUpload = (event) => {
  const newFiles = Array.from(event.target.files);
  const combinedFiles = [...form.value.galeri, ...newFiles];

  // Batasi total file menjadi 5
  form.value.galeri = combinedFiles.slice(0, 5);

  // Buat ulang array preview berdasarkan data file yang sudah final
  previewImages.value = []; 
  form.value.galeri.forEach(file => {
    const reader = new FileReader();
    reader.onload = (e) => {
      previewImages.value.push(e.target.result);
    };
    reader.readAsDataURL(file);
  });

  // Reset input agar bisa memilih file yang sama lagi
  event.target.value = null;
};

// FUNGSI UNTUK MENGHAPUS GAMBAR (SEKARANG DI LUAR)
const removeImage = (index) => {
  form.value.galeri.splice(index, 1);
  previewImages.value.splice(index, 1);
};


const submitForm = async () => {
  loading.value = true;
  success.value = false;
  error.value = false;

  try {
    const body = new FormData();
    for (const key in form.value) {
      if (key === "galeri") {
        form.value.galeri.forEach((file) => body.append("galeri[]", file));
      } else if (form.value[key] !== null && form.value[key] !== undefined) {
        body.append(key, form.value[key]);
      }
    }

    // 2. ENDPOINT API DIPERBAIKI
    await $fetch("http://localhost:8000/api/form/ulang-tahun", {
      method: "POST",
      body,
    });

    success.value = true;
  } catch (err) {
    console.error(err);
    error.value = true;
  } finally {
    loading.value = false;
  }
};
</script>