<template>
  <div class="min-h-screen bg-gray-50 py-10 px-6">
    <div class="max-w-5xl mx-auto bg-white rounded-2xl shadow-lg p-8">
      <h1 class="text-2xl font-bold text-center text-gray-800">
        Form Undangan Ulang Tahun Starter
      </h1>
      <p class="text-center text-gray-500 text-sm mb-8">
        Isi semua data berikut dengan lengkap dan benar.
      </p>

      <!-- Data Pemesan -->
      <section class="mb-8">
        <h2 class="font-semibold text-blue-600 mb-3 border-b pb-1">Data Pemesan</h2>
        <div class="grid grid-cols-1 md:grid-cols-3 gap-4">
          <!-- Nama Pemesan -->
          <div class="relative">
            <input v-model="form.nama_pemesan" type="text" placeholder=" " required
              class="peer w-full border border-gray-300 rounded-lg px-2.5 pt-4 pb-1.5 text-sm focus:ring-2 focus:ring-blue-400 focus:border-blue-400 outline-none transition" />
            <label class="absolute left-1 top-0 text-gray-400 text-xs transition-all
               peer-placeholder-shown:top-4 peer-placeholder-shown:left-2 peer-placeholder-shown:text-gray-400 peer-placeholder-shown:text-sm
               peer-focus:top-0 peer-focus:left-1 peer-focus:text-[10px] peer-focus:text-blue-500
               peer-valid:top-0 peer-valid:left-1 peer-valid:text-[10px] peer-valid:text-gray-500">
              Nama Pemesan
            </label>
          </div>

          <!-- Email -->
          <div class="relative">
            <input v-model="form.email" type="email" placeholder=" " required
              class="peer w-full border border-gray-300 rounded-lg px-2.5 pt-4 pb-1.5 text-sm focus:ring-2 focus:ring-blue-400 focus:border-blue-400 outline-none transition" />
            <label class="absolute left-1 top-0 text-gray-400 text-xs transition-all
               peer-placeholder-shown:top-4 peer-placeholder-shown:left-2 peer-placeholder-shown:text-gray-400 peer-placeholder-shown:text-sm
               peer-focus:top-0 peer-focus:left-1 peer-focus:text-[10px] peer-focus:text-blue-500
               peer-valid:top-0 peer-valid:left-1 peer-valid:text-[10px] peer-valid:text-gray-500">
              Email
            </label>
          </div>

          <!-- No Telepon -->
          <div class="relative">
            <input v-model="form.no_tlpn" type="text" placeholder=" " required
              class="peer w-full border border-gray-300 rounded-lg px-2.5 pt-4 pb-1.5 text-sm focus:ring-2 focus:ring-blue-400 focus:border-blue-400 outline-none transition" />
            <label class="absolute left-1 top-0 text-gray-400 text-xs transition-all
               peer-placeholder-shown:top-4 peer-placeholder-shown:left-2 peer-placeholder-shown:text-gray-400 peer-placeholder-shown:text-sm
               peer-focus:top-0 peer-focus:left-1 peer-focus:text-[10px] peer-focus:text-blue-500
               peer-valid:top-0 peer-valid:left-1 peer-valid:text-[10px] peer-valid:text-gray-500">
              No Telepon
            </label>
          </div>
        </div>
      </section>

      <!-- Data Anak -->
      <section class="mb-8">
        <h2 class="font-semibold text-blue-600 mb-3 border-b pb-1">Data Anak</h2>
        <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
          <div class="grid gap-4">
            <template v-for="(field, i) in [
              { key: 'nama_lengkap', label: 'Nama Lengkap' },
              { key: 'nama_bapak', label: 'Nama Bapak' },
              { key: 'nama_ibu', label: 'Nama Ibu' },
              { key: 'umur_yang_dirayakan', label: 'Umur yang Dirayakan', type: 'number' },
              { key: 'anak_ke', label: 'Anak Ke', type: 'number' }
            ]" :key="i">
              <div class="relative">
                <input v-model="form.form[field.key]" :type="field.type || 'text'" required placeholder=" "
                  class="peer w-full border border-gray-300 rounded-lg px-2.5 pt-4 pb-1.5 text-sm focus:ring-2 focus:ring-blue-400 focus:border-blue-400 outline-none transition" />
                <label class="absolute left-1 top-0 text-gray-400 text-xs transition-all
                   peer-placeholder-shown:top-4 peer-placeholder-shown:left-2 peer-placeholder-shown:text-gray-400 peer-placeholder-shown:text-sm
                   peer-focus:top-0 peer-focus:left-1 peer-focus:text-[10px] peer-focus:text-blue-500
                   peer-valid:top-0 peer-valid:left-1 peer-valid:text-[10px] peer-valid:text-gray-500">
                  {{ field.label }}
                </label>
              </div>
            </template>
          </div>
        </div>
      </section>

      <!-- Detail Acara -->
      <section class="mb-8">
        <h2 class="font-semibold text-blue-600 mb-3 border-b pb-1">Detail Acara</h2>
        <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
          <div class="relative">
            <input v-model="form.form.hari_tanggal_acara" type="date" required placeholder=" "
              class="peer w-full border border-gray-300 rounded-lg px-2.5 pt-4 pb-1.5 text-sm focus:ring-2 focus:ring-blue-400 focus:border-blue-400 outline-none transition" />
            <label class="absolute left-2 text-gray-400 text-xs transition-all
                 peer-placeholder-shown:top-4 peer-placeholder-shown:text-sm
                 peer-focus:top-0 peer-focus:text-[10px] peer-focus:text-blue-500
                 peer-valid:top-0 peer-valid:text-[10px] peer-valid:text-gray-500">
              Hari & Tanggal Acara
            </label>
          </div>

          <div class="relative">
            <input v-model="form.form.waktu" type="time" required placeholder=" "
              class="peer w-full border border-gray-300 rounded-lg px-2.5 pt-4 pb-1.5 text-sm focus:ring-2 focus:ring-blue-400 focus:border-blue-400 outline-none transition" />
            <label class="absolute left-2 text-gray-400 text-xs transition-all
                 peer-placeholder-shown:top-4 peer-placeholder-shown:text-sm
                 peer-focus:top-0 peer-focus:text-[10px] peer-focus:text-blue-500
                 peer-valid:top-0 peer-valid:text-[10px] peer-valid:text-gray-500">
              Waktu
            </label>
          </div>

          <div class="relative md:col-span-2">
            <textarea v-model="form.form.alamat" rows="4" required placeholder=" "
              class="peer w-full border border-gray-300 rounded-lg px-2.5 pt-4 pb-1.5 text-sm focus:ring-2 focus:ring-blue-400 focus:border-blue-400 outline-none transition resize-none" />
            <label class="absolute left-1 top-0 text-gray-400 text-xs transition-all
               peer-placeholder-shown:top-4 peer-placeholder-shown:left-2 peer-placeholder-shown:text-gray-400 peer-placeholder-shown:text-sm
               peer-focus:top-0 peer-focus:left-1 peer-focus:text-[10px] peer-focus:text-blue-500
               peer-valid:top-0 peer-valid:left-1 peer-valid:text-[10px] peer-valid:text-gray-500">
              Alamat
            </label>
          </div>
          <div class="relative md:col-span-2">
            <input v-model="form.form.link_gmaps" type="text" required placeholder=" "
              class="peer w-full border border-gray-300 rounded-lg px-2.5 pt-4 pb-1.5 text-sm focus:ring-2 focus:ring-blue-400 focus:border-blue-400 outline-none transition" />
            <label class="absolute left-1 top-0 text-gray-400 text-xs transition-all 
               peer-placeholder-shown:top-4 peer-placeholder-shown:left-2 peer-placeholder-shown:text-gray-400 peer-placeholder-shown:text-sm
               peer-focus:top-0 peer-focus:left-1 peer-focus:text-[10px] peer-focus:text-blue-500
               peer-valid:top-0 peer-valid:left-1 peer-valid:text-[10px] peer-valid:text-gray-500">
              Link Gmaps
            </label>
          </div>
        </div>
      </section>

      <!-- Foto Upload -->
      <section class="mb-8">
        <h2 class="font-semibold text-blue-600 mb-3 border-b pb-1">Galeri Foto</h2>
        <div class="border-2 border-dashed border-gray-300 rounded-xl p-8 flex flex-col justify-center items-center text-gray-400 hover:border-blue-400 hover:text-blue-500 transition">
          <input id="gallery" type="file" multiple accept="image/*" class="hidden" @change="handleFileChange" />
          <label v-if="!previews.length" for="gallery" class="cursor-pointer flex flex-col items-center">
            <span class="text-4xl font-bold">+</span>
            <span class="text-sm mt-2">Pilih Foto (maks. 2, JPEG/PNG, maks. 2MB)</span>
          </label>
          <div v-else class="grid grid-cols-2 sm:grid-cols-2 gap-4">
            <div v-for="(src, i) in previews" :key="i" class="relative group">
              <img :src="src" class="w-24 h-24 object-cover rounded-lg border shadow" />
              <button @click="removeFile(i)"
                class="absolute -top-2 -right-2 bg-red-500 text-white rounded-full w-5 h-5 flex items-center justify-center text-xs opacity-0 group-hover:opacity-100 transition"
                title="Hapus foto">
                X
              </button>
            </div>
            <label v-if="previews.length < 2" for="gallery"
              class="cursor-pointer flex flex-col items-center justify-center w-24 h-24 border-2 border-dashed border-gray-300 rounded-lg text-gray-400 hover:border-blue-400 hover:text-blue-500 transition">
              <span class="text-3xl font-bold">+</span>
            </label>
          </div>
        </div>
      </section>

      <!-- Tombol -->
      <div class="text-end mt-6">
        <button @click="batal"
          class="bg-gray-600 text-white font-semibold px-6 py-2 rounded-lg transition mr-2">
          Batal
        </button>
        <button @click="konfirmasi"
          class="bg-blue-700 text-white font-semibold px-6 py-2 rounded-lg transition">
          Konfirmasi
        </button>
      </div>
    </div>
  </div>
</template>

<script setup>
import { ref } from 'vue'
import { useRouter } from 'vue-router'
import Swal from 'sweetalert2'

const router = useRouter()
const ADMIN_WA = '62895333053398' // Ganti dengan nomor admin yang benar

const form = ref({
  nama_pemesan: '',
  email: '',
  no_tlpn: '',
  form: {
    nama_lengkap: '',
    nama_bapak: '',
    nama_ibu: '',
    umur_yang_dirayakan: '',
    anak_ke: '',
    hari_tanggal_acara: '',
    waktu: '',
    alamat: ''
  },
  foto: []
})

const previews = ref([])

const handleFileChange = (e) => {
  const files = Array.from(e.target.files)
  const totalFiles = form.value.foto.length + files.length

  if (totalFiles > 2) {
    Swal.fire('Oops!', 'Maksimal 2 foto!', 'warning')
    e.target.value = ''
    return
  }

  files.forEach(file => {
    if (file.size > 2 * 1024 * 1024) {
      Swal.fire('File Terlalu Besar!', `${file.name} melebihi 2MB`, 'error')
      return
    }
    if (!['image/jpeg', 'image/png', 'image/jpg'].includes(file.type)) {
      Swal.fire('Format Salah!', `${file.name} harus JPEG/PNG`, 'error')
      return
    }
    form.value.foto.push(file)
    previews.value.push(URL.createObjectURL(file))
  })

  e.target.value = ''
}

const removeFile = (index) => {
  form.value.foto.splice(index, 1)
  previews.value.splice(index, 1)
}

const konfirmasi = async () => {
  try {
    // Validasi wajib
    if (!form.value.nama_pemesan || !form.value.email) {
      Swal.fire('Data Kurang!', 'Nama Pemesan dan Email wajib diisi!', 'warning')
      return
    }

    const data = new FormData()
    data.append('nama_pemesan', form.value.nama_pemesan)
    data.append('email', form.value.email)
    data.append('no_tlpn', form.value.no_tlpn)
    data.append('template_slug', 'undangan-ulang-tahun-starter')

    for (const [key, value] of Object.entries(form.value.form)) {
      data.append(`form[${key}]`, value || '-')
    }

    form.value.foto.forEach((file, index) => {
      data.append(`foto[${index}]`, file)
    })

    const res = await fetch('http://localhost:8000/api/pelanggans', {
      method: 'POST',
      body: data
    })

    const result = await res.json()

    if (!res.ok) {
      if (res.status === 422) {
        const errors = result.errors || {}
        const errorMessages = Object.values(errors).flat().join('\n')
        throw new Error(errorMessages || 'Validasi gagal')
      }
      if (res.status === 404) {
        throw new Error('Template tidak ditemukan')
      }
      throw new Error(result.message || 'Gagal mengirim data')
    }

    // === SUKSES: Tampilkan SweetAlert ===
    await Swal.fire({
      title: 'Berhasil!',
      text: result.message || 'Data undangan kamu berhasil disimpan.',
      icon: 'success',
      confirmButtonText: 'Lanjut ke WhatsApp',
      confirmButtonColor: '#2563eb',
      background: '#f9fafb',
      color: '#111827',
      showClass: { popup: 'animate__animated animate__fadeInDown' },
      hideClass: { popup: 'animate__animated animate__fadeOutUp' }
    })

    // === BUAT PESAN WHATSAPP ===
    const f = form.value
    const child = f.form

    const message = `
Halo Admin,
Saya ingin membuat *Undangan Ulang Tahun Starter*

*Data Pemesan*
- Nama: ${f.nama_pemesan}
- Email: ${f.email}
- No. Telepon: ${f.no_tlpn}

*Data Anak*
- Nama Lengkap: ${child.nama_lengkap}
- Bapak: ${child.nama_bapak || '-'}
- Ibu: ${child.nama_ibu || '-'}
- Umur: ${child.umur_yang_dirayakan} tahun
- Anak ke: ${child.anak_ke || '-'}

*Detail Acara*
- Tanggal: ${child.hari_tanggal_acara}
- Waktu: ${child.waktu}
- Alamat: ${child.alamat}

Terima kasih
`.trim()

    const encodedMsg = encodeURIComponent(message)
    const waUrl = `https://wa.me/${ADMIN_WA}?text=${encodedMsg}`

    // === BUKA WHATSAPP ===
    Swal.fire({
      title: 'Membuka WhatsApp...',
      text: 'Mohon tunggu sebentar',
      timer: 1500,
      timerProgressBar: true,
      showConfirmButton: false,
      willClose: () => {
        window.open(waUrl, '_blank')
        router.push('/')
      }
    })

  } catch (err) {
    Swal.fire('Gagal', err.message, 'error')
  }
}

const batal = () => router.back()
</script>