<script setup lang="ts">
import { ref, onMounted, computed } from 'vue'
import { businessService } from '@/services/businessService'
import type { Business } from '@/types'
import { useRouter } from 'vue-router'
import FavoriteButton from '@/components/FavoriteButton.vue'
import { analyticsService } from '@/services/analyticsService'
import { getImageUrl } from '@/utils/imageUrl'

const router = useRouter()
const businesses  = ref<Business[]>([])
const isLoading   = ref(true)
const error       = ref<string | null>(null)
const searchQuery = ref('')
const selectedCategory = ref('Todas')
const selectedArea     = ref('Todas')

// ── Categorías con emoji e ícono material
const CATEGORY_META: Record<string, { emoji: string; icon: string }> = {
  'Todas':       { emoji: '✨', icon: 'apps' },
  'Restaurante': { emoji: '🍽️', icon: 'restaurant' },
  'Hotel':       { emoji: '🏨', icon: 'hotel' },
  'Café':        { emoji: '☕', icon: 'local_cafe' },
  'Comercio':    { emoji: '🏪', icon: 'store' },
  'Turismo':     { emoji: '🌄', icon: 'landscape' },
  'Bebidas':     { emoji: '🍹', icon: 'local_bar' },
}

function catEmoji(cat: string) {
  return CATEGORY_META[cat]?.emoji ?? '📍'
}
function catIcon(cat: string) {
  return CATEGORY_META[cat]?.icon ?? 'place'
}

async function loadBusinesses() {
  isLoading.value = true
  error.value = null
  try {
    businesses.value = await businessService.getAllBusinesses()
  } catch (e) {
    console.error('Error loading businesses:', e)
    error.value = 'No se pudieron cargar los lugares. Revisa tu conexión.'
  } finally {
    isLoading.value = false
  }
}

onMounted(() => {
  analyticsService.logEvent({ event_name: 'screen_view', screen_name: 'Discover' })
  loadBusinesses()
})

// ── Computados
const categories = computed<string[]>(() => {
  const cats = new Set(businesses.value.map(b => b.category).filter(Boolean) as string[])
  return ['Todas', ...Array.from(cats)]
})

const areas = computed<string[]>(() => {
  const ars = new Set(businesses.value.map(b => b.area).filter(Boolean) as string[])
  return [...Array.from(ars)]
})

const filteredBusinesses = computed(() => {
  let list = businesses.value
  if (selectedCategory.value !== 'Todas')
    list = list.filter(b => b.category === selectedCategory.value)
  if (selectedArea.value !== 'Todas')
    list = list.filter(b => b.area === selectedArea.value)
  if (searchQuery.value.trim())
    list = list.filter(b =>
      b.name.toLowerCase().includes(searchQuery.value.toLowerCase()) ||
      (b.area && b.area.toLowerCase().includes(searchQuery.value.toLowerCase())) ||
      (b.category && b.category.toLowerCase().includes(searchQuery.value.toLowerCase()))
    )
  return list
})

// Primeros 2 para destacados cuando no hay filtro activo
const featuredBusinesses = computed(() =>
  businesses.value.slice(0, 2)
)

// Resto del listado (sin los destacados) cuando no hay filtros
const gridBusinesses = computed(() => {
  const hasFilter = selectedCategory.value !== 'Todas' || selectedArea.value !== 'Todas' || searchQuery.value.trim()
  if (hasFilter) return filteredBusinesses.value
  return businesses.value.slice(2)
})

const isFiltering = computed(() =>
  selectedCategory.value !== 'Todas' || selectedArea.value !== 'Todas' || searchQuery.value.trim() !== ''
)

function handleExplore(biz: Business) {
  analyticsService.logEvent({ event_name: 'promo_click', item_id: biz.name, properties: { business_id: biz.id } })
  router.push('/business/' + biz.id)
}


function resetFilters() {
  selectedCategory.value = 'Todas'
  selectedArea.value = 'Todas'
  searchQuery.value = ''
}
</script>

<template>
  <div class="disc-page">

    <!-- ── HEADER ── -->
    <header class="disc-header">
      <div class="header-body">
        <h1 class="disc-title">¡Explora Chiriquí! 🌿</h1>
        <p class="disc-sub">Descubre los mejores lugares cerca de ti</p>
      </div>

      <!-- Búsqueda -->
      <div class="search-wrap">
        <span class="material-icons search-icon">search</span>
        <input
          v-model="searchQuery"
          type="text"
          class="search-input"
          placeholder="Buscar restaurantes, hoteles..."
        />
        <button v-if="searchQuery" class="search-clear" @click="searchQuery = ''">
          <span class="material-icons">close</span>
        </button>
      </div>
    </header>

    <!-- ── CHIPS DE CATEGORÍA ── -->
    <div class="cat-chips-wrap">
      <div class="cat-chips-scroll">
        <button
          v-for="cat in categories"
          :key="cat"
          class="cat-chip"
          :class="{ 'cat-chip--active': selectedCategory === cat }"
          @click="selectedCategory = cat"
        >
          {{ catEmoji(cat) }} {{ cat }}
        </button>
      </div>
    </div>

    <!-- ── LOADING ── -->
    <div v-if="isLoading" class="state-center">
      <div class="spinner"></div>
      <p>Cargando lugares...</p>
    </div>

    <!-- ── ERROR ── -->
    <div v-else-if="error" class="state-center">
      <span class="material-icons" style="font-size: 3.5rem; color: #ef4444; opacity: 0.8; margin-bottom: 0.5rem;">error_outline</span>
      <p style="font-weight: 600; color: var(--text-secondary);">{{ error }}</p>
      <button class="cta-btn" style="margin-top: 1rem;" @click="loadBusinesses">
        <span class="material-icons">refresh</span>
        Reintentar
      </button>
    </div>

    <template v-else>

      <!-- ══ VISTA CON FILTRO ACTIVO ══ -->
      <div v-if="isFiltering" class="disc-content">

        <!-- Chips de área activos -->
        <div v-if="areas.length > 0" class="area-chips">
          <button
            v-for="area in areas"
            :key="area"
            class="area-chip"
            :class="{ 'area-chip--active': selectedArea === area }"
            @click="selectedArea = selectedArea === area ? 'Todas' : area"
          >
            <span class="material-icons area-chip-icon">location_on</span>
            {{ area }}
          </button>
        </div>

        <!-- Contador de resultados -->
        <div class="results-bar">
          <span class="results-count">
            {{ filteredBusinesses.length }}
            {{ filteredBusinesses.length === 1 ? 'lugar' : 'lugares' }}
            <template v-if="selectedCategory !== 'Todas'"> en {{ selectedCategory }}</template>
            <template v-if="selectedArea !== 'Todas'"> · {{ selectedArea }}</template>
          </span>
          <button class="reset-btn" @click="resetFilters">
            <span class="material-icons">refresh</span>
            Limpiar
          </button>
        </div>

        <!-- Grid de resultados -->
        <TransitionGroup v-if="filteredBusinesses.length > 0" name="fade" tag="div" class="biz-grid">
          <div
            v-for="biz in filteredBusinesses"
            :key="biz.id"
            v-memo="[biz.id]"
            class="biz-card"
            @click="handleExplore(biz)"
          >
            <div class="biz-img-wrap">
              <img 
                :src="getImageUrl(biz.image_url, 'business')" 
                :alt="biz.name" 
                loading="lazy"
                decoding="async"
                class="biz-img" 
                @error="(e) => (e.target as HTMLImageElement).src = getImageUrl(null, 'business')"
              />
              <div class="biz-fav">
                <FavoriteButton item-type="business" :item-id="biz.id" :item-name="biz.name" :item-image="biz.image_url || undefined" />
              </div>
              <span class="biz-cat-badge">
                <span class="material-icons" style="font-size:0.875rem">{{ catIcon(biz.category || '') }}</span>
                {{ biz.category }}
              </span>
            </div>
            <div class="biz-body">
              <p class="biz-name">{{ biz.name }}</p>
              <p class="biz-area">
                <span class="material-icons biz-area-icon">near_me</span>
                {{ biz.area }}
              </p>
            </div>
          </div>
        </TransitionGroup>

        <!-- Vacío -->
        <div v-else class="empty-state">
          <span class="material-icons empty-icon">search_off</span>
          <h2 class="empty-title">Sin resultados</h2>
          <p class="empty-sub">No encontramos lugares con ese filtro.</p>
          <button class="cta-btn" @click="resetFilters">Ver todos los lugares</button>
        </div>

        <!-- CTA al final -->
        <div v-if="filteredBusinesses.length > 0" class="more-card" @click="resetFilters">
          <p class="more-card-title">¿Buscas algo más?</p>
          <p class="more-card-sub">Explora sin filtros para descubrir todo</p>
          <button class="cta-btn">Ver todo</button>
        </div>
      </div>

      <!-- ══ VISTA INICIO (sin filtros) ══ -->
      <div v-else class="disc-content">

        <!-- CHIPS DE ÁREA -->
        <div v-if="areas.length > 0" class="area-section">
          <p class="section-label">🗺️ Por Área</p>
          <div class="area-chips">
            <button
              v-for="area in areas"
              :key="area"
              class="area-chip"
              :class="{ 'area-chip--active': selectedArea === area }"
              @click="selectedArea = selectedArea === area ? 'Todas' : area"
            >
              <span class="material-icons area-chip-icon">location_on</span>
              {{ area }}
            </button>
          </div>
        </div>

        <!-- DESTACADOS -->
        <div v-if="featuredBusinesses.length > 0" class="featured-section">
          <p class="section-label">✨ Destacados</p>
          <div class="featured-grid">
            <div
              v-for="biz in featuredBusinesses"
              :key="biz.id"
              v-memo="[biz.id]"
              class="featured-card"
              @click="handleExplore(biz)"
            >
              <img 
                :src="getImageUrl(biz.image_url, 'business')" 
                :alt="biz.name" 
                loading="lazy"
                decoding="async"
                class="featured-img" 
                @error="(e) => (e.target as HTMLImageElement).src = getImageUrl(null, 'business')"
              />
              <div class="featured-gradient"></div>
              <div class="featured-fav">
                <FavoriteButton item-type="business" :item-id="biz.id" :item-name="biz.name" :item-image="biz.image_url || undefined" />
              </div>
              <div class="featured-info">
                <span class="featured-cat">
                  <span class="material-icons" style="font-size:0.8rem">{{ catIcon(biz.category || '') }}</span>
                  {{ biz.category }}
                </span>
                <p class="featured-name">{{ biz.name }}</p>
                <p class="featured-area">
                  <span class="material-icons" style="font-size:0.875rem">near_me</span>
                  {{ biz.area }}
                </p>
              </div>
            </div>
          </div>
        </div>

        <!-- TODOS LOS LUGARES -->
        <div v-if="gridBusinesses.length > 0" class="all-section">
          <p class="section-label">🏙️ Todos los lugares</p>
          <TransitionGroup name="fade" tag="div" class="biz-grid">
            <div
              v-for="biz in gridBusinesses"
              :key="biz.id"
              v-memo="[biz.id]"
              class="biz-card"
              @click="handleExplore(biz)"
            >
              <div class="biz-img-wrap">
                <img 
                  :src="getImageUrl(biz.image_url, 'business')" 
                  :alt="biz.name" 
                  loading="lazy"
                  decoding="async"
                  class="biz-img" 
                  @error="(e) => (e.target as HTMLImageElement).src = getImageUrl(null, 'business')"
                />
                <div class="biz-fav">
                  <FavoriteButton item-type="business" :item-id="biz.id" :item-name="biz.name" :item-image="biz.image_url || undefined" />
                </div>
                <span class="biz-cat-badge">
                  <span class="material-icons" style="font-size:0.875rem">{{ catIcon(biz.category || '') }}</span>
                  {{ biz.category }}
                </span>
              </div>
              <div class="biz-body">
                <p class="biz-name">{{ biz.name }}</p>
                <p class="biz-area">
                  <span class="material-icons biz-area-icon">near_me</span>
                  {{ biz.area }}
                </p>
              </div>
            </div>
          </TransitionGroup>
        </div>

        <div v-if="businesses.length === 0" class="empty-state">
          <span class="material-icons empty-icon">storefront</span>
          <h2 class="empty-title">Sin lugares aún</h2>
          <p class="empty-sub">Pronto habrá negocios y lugares turísticos disponibles aquí.</p>
        </div>
      </div>
    </template>
  </div>
</template>

<style scoped>
/* ═══════════════════════════════════════════
   BASE
═══════════════════════════════════════════ */
.disc-page {
  min-height: 100vh;
  background: var(--bg-primary);
  padding-bottom: 100px;
}

/* ═══════════════════════════════════════════
   HEADER
═══════════════════════════════════════════ */
.disc-header {
  padding: 1.25rem 1.25rem 0.75rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.disc-title {
  font-size: 1.625rem;
  font-weight: 900;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.02em;
}

.disc-sub {
  margin: 0.2rem 0 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Search */
.search-wrap {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  background: var(--bg-primary);
  border: 1.5px solid var(--border-color);
  border-radius: 0.875rem;
  padding: 0.75rem 1rem;
  transition: border-color 0.2s;
}

.search-wrap:focus-within { border-color: var(--active-color); }

.search-icon { font-size: 1.25rem; color: var(--active-color); flex-shrink: 0; }

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 0.9375rem;
  color: var(--text-primary);
  font-family: inherit;
  outline: none;
}

.search-input::placeholder { color: var(--text-secondary); }

.search-clear {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  padding: 0;
}

.search-clear .material-icons { font-size: 1.125rem; }

/* ═══════════════════════════════════════════
   CHIPS DE CATEGORÍA
═══════════════════════════════════════════ */
.cat-chips-wrap {
  background: var(--bg-secondary);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 10;
}

.cat-chips-scroll {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0 1.25rem;
  scrollbar-width: none;
}

.cat-chips-scroll::-webkit-scrollbar { display: none; }

.cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.875rem;
  border-radius: 99px;
  border: 1.5px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.18s;
}

.cat-chip:hover { border-color: var(--active-color); color: var(--text-primary); }

.cat-chip--active {
  background: var(--active-color);
  border-color: var(--active-color);
  color: #101820;
}

/* ═══════════════════════════════════════════
   CONTENIDO
═══════════════════════════════════════════ */
.disc-content {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  max-width: 720px;
  margin: 0 auto;
}

/* Etiqueta de sección */
.section-label {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 0.875rem;
  letter-spacing: -0.01em;
}

/* ═══════════════════════════════════════════
   CHIPS DE ÁREA
═══════════════════════════════════════════ */
.area-section { display: flex; flex-direction: column; }

.area-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.area-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem 0.875rem;
  border-radius: 99px;
  border: 1.5px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.18s;
}

.area-chip-icon { font-size: 0.875rem; }

.area-chip:hover { border-color: var(--active-color); color: var(--text-primary); }

.area-chip--active {
  background: var(--active-color);
  border-color: var(--active-color);
  color: #101820;
}

/* ═══════════════════════════════════════════
   SECCIÓN DESTACADOS
═══════════════════════════════════════════ */
.featured-section { display: flex; flex-direction: column; }

.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.featured-card {
  position: relative;
  border-radius: 1.125rem;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 3/4;
  background: var(--bg-secondary);
  transition: transform 0.2s;
}

.featured-card:hover { transform: scale(0.98); }

.featured-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.featured-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 40%, transparent 70%);
}

.featured-fav {
  position: absolute;
  top: 0.625rem;
  right: 0.625rem;
  z-index: 2;
}

.featured-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.875rem;
  z-index: 2;
}

.featured-cat {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--active-color);
  color: #101820;
  font-size: 0.6875rem;
  font-weight: 800;
  padding: 0.15rem 0.5rem;
  border-radius: 99px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.375rem;
}

.featured-name {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1.2;
}

.featured-area {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  margin: 0;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.75);
  font-weight: 600;
}

/* ═══════════════════════════════════════════
   GRID DE NEGOCIOS
═══════════════════════════════════════════ */
.all-section { display: flex; flex-direction: column; }

.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.biz-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.18s, border-color 0.18s;
}

.biz-card:hover {
  transform: translateY(-4px);
  border-color: var(--active-color);
}

.biz-img-wrap {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}

.biz-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.biz-fav {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
}

.biz-cat-badge {
  position: absolute;
  bottom: 0.5rem;
  left: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--active-color);
  color: #101820;
  font-size: 0.625rem;
  font-weight: 800;
  padding: 0.15rem 0.45rem;
  border-radius: 99px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.biz-body { padding: 0.625rem 0.75rem; }

.biz-name {
  margin: 0 0 0.25rem;
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.biz-area {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  margin: 0;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.biz-area-icon { font-size: 0.875rem; }

/* ═══════════════════════════════════════════
   BARRA DE RESULTADOS
═══════════════════════════════════════════ */
.results-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: -0.5rem;
}

.results-count {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: none;
  border: 1.5px solid var(--border-color);
  border-radius: 99px;
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: inherit;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.18s;
}

.reset-btn .material-icons { font-size: 0.875rem; }
.reset-btn:hover { border-color: var(--active-color); color: var(--text-primary); }

/* ═══════════════════════════════════════════
   TARJETA "MÁS"
═══════════════════════════════════════════ */
.more-card {
  background: var(--bg-secondary);
  border: 1.5px dashed var(--border-color);
  border-radius: 1rem;
  padding: 1.25rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s;
}

.more-card:hover { border-color: var(--active-color); }

.more-card-title {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-primary);
}

.more-card-sub {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════
   CTA Y VACÍO
═══════════════════════════════════════════ */
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--active-color);
  color: #101820;
  border: none;
  border-radius: 99px;
  font-size: 0.875rem;
  font-weight: 800;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.15s;
}

.cta-btn:active { transform: scale(0.97); }

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 3rem 1.25rem;
  text-align: center;
}

.empty-icon {
  font-size: 3.5rem;
  color: var(--text-secondary);
  opacity: 0.3;
  margin-bottom: 1rem;
}

.empty-title {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--text-primary);
  margin: 0 0 0.5rem;
}

.empty-sub {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin: 0 0 1.5rem;
  line-height: 1.5;
}

/* ═══════════════════════════════════════════
   LOADING / SPINNER
═══════════════════════════════════════════ */
.state-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4rem 1.25rem;
  gap: 1rem;
  color: var(--text-secondary);
}

.spinner {
  width: 2rem;
  height: 2rem;
  border: 2.5px solid var(--border-color);
  border-top-color: var(--active-color);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════════════════════════════════
   TRANSICIÓN DE TARJETAS
═══════════════════════════════════════════ */
.fade-enter-active { transition: opacity 0.25s ease, transform 0.25s ease; }
.fade-enter-from   { opacity: 0; transform: translateY(8px); }

/* ═══════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════ */
@media (min-width: 560px) {
  .biz-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 360px) {
  .featured-grid { grid-template-columns: 1fr; }
  .featured-card { aspect-ratio: 4/3; }
}
</style>
