<script setup lang="ts">
import { computed, onMounted, ref } from 'vue'
import { useAuthStore } from '@/stores/auth'
import { useUserStore } from '@/stores/user'
import GlassCard from '@/components/ui/GlassCard.vue'
import ProgressBar from '@/components/ui/ProgressBar.vue'
import AchievementBadge from '@/components/ui/AchievementBadge.vue'
import EmptyState from '@/components/ui/EmptyState.vue'

const auth = useAuthStore()
const userStore = useUserStore()
const user = computed(() => auth.user!)

const userMetaLine = computed(() => {
  const parts: string[] = []
  if (user.value.institute) parts.push(user.value.institute)
  if (user.value.direction) parts.push(user.value.direction)
  return parts.join(' ')
})

const userYearLine = computed(() => {
  const year = user.value.year ?? 0
  return Number.isFinite(year) && year > 0 ? `${year} курс` : ''
})
const currentLevelXp = computed(() => user.value.currentLevelXp ?? 0)
const nextLevelXp = computed(() => user.value.nextLevelXp)
const userXp = computed(() => user.value.xp ?? 0)
const hasLevelProgress = computed(() => nextLevelXp.value !== undefined)
const hasNextLevel = computed(() => typeof nextLevelXp.value === 'number' && nextLevelXp.value > currentLevelXp.value)
const levelProgressMax = computed(() => hasNextLevel.value ? nextLevelXp.value! - currentLevelXp.value : 1)
const levelProgress = computed(() => {
  if (!hasLevelProgress.value) return 0
  if (!hasNextLevel.value) return 1
  return Math.min(Math.max(userXp.value - currentLevelXp.value, 0), levelProgressMax.value)
})
const levelProgressLabel = computed(() =>
  !hasLevelProgress.value
    ? `Уровень ${user.value.level}`
    : hasNextLevel.value ? `Уровень ${user.value.level}` : `Уровень ${user.value.level} · максимум`
)
const levelProgressText = computed(() =>
  hasNextLevel.value ? `${levelProgress.value} / ${levelProgressMax.value} XP` : `${userXp.value} XP`
)
const interestTags = ref([
  { label: '#ML', active: true },
  { label: '#ИИ', active: true },
  { label: '#дизайн', active: false },
  { label: '#право', active: false },
  { label: '#биоинформатика', active: false },
  { label: '#маркетинг', active: true },
])

const notificationSettings = ref({ email: true })

onMounted(() => {
  void userStore.fetchStudentData()
})
</script>

<template>
  <div class="profile page-content">
    <div class="header">
      <h1 class="page-title">Профиль пользователя</h1>
    </div>

    <div class="profile-grid">
      <GlassCard>
        <div class="user-info">
          <div class="avatar">👤</div>
          <div>
            <div class="name">{{ user.name }}</div>
            <div class="email">{{ user.email }}</div>
            <div v-if="userMetaLine" class="meta">{{ userMetaLine }}</div>
            <div v-if="userYearLine" class="meta">{{ userYearLine }}</div>
          </div>
        </div>
        <div class="level">
          <div class="level-header">
            <span>{{ levelProgressLabel }}</span>
            <span>{{ levelProgressText }}</span>
          </div>
          <ProgressBar :value="levelProgress" :max="levelProgressMax" :text="levelProgressText" />
        </div>
        <div class="tags">
          <div class="section-title">Интересы</div>
          <div class="tags-grid">
            <button
              v-for="tag in interestTags"
              :key="tag.label"
              class="tag-chip"
              :class="{ active: tag.active }"
              @click="tag.active = !tag.active"
            >
              {{ tag.label }}
            </button>
          </div>
        </div>
      </GlassCard>

      <GlassCard>
        <div class="section-title">Настройки уведомлений</div>
        <div class="settings">
          <label class="setting">
            <input type="checkbox" v-model="notificationSettings.email" />
            Email уведомления
          </label>
        </div>
        <div class="section-title">Достижения</div>
        <EmptyState
          v-if="!userStore.achievements.length"
          title="Достижений пока нет"
          subtitle="Они появятся после посещений и отзывов."
        />
        <div v-else class="achievements">
          <AchievementBadge
            v-for="a in userStore.achievements.slice(0, 3)"
            :key="a.id"
            :icon="a.icon"
            :title="a.title"
            :description="a.description"
            :unlocked="a.unlocked"
            :unlockedAt="a.unlockedAt"
          />
        </div>
      </GlassCard>
    </div>
  </div>
</template>

<style scoped>
.profile { display: flex; flex-direction: column; gap: 20px; }
.header { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.profile-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }
.user-info { display: flex; gap: 14px; align-items: center; margin-bottom: 16px; }
.avatar { font-size: 38px; background: rgba(34,197,94,0.15); border-radius: 16px; padding: 12px; }
.name { font-weight: 700; font-size: 18px; }
.email, .meta { font-size: 13px; color: var(--color-text-secondary); }
.level { margin: 16px 0; }
.level-header { display: flex; justify-content: space-between; font-size: 12px; color: var(--color-text-secondary); margin-bottom: 6px; }
.tags-grid { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.settings { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.setting { font-size: 13px; color: var(--color-text-secondary); display: flex; gap: 8px; align-items: center; }
.achievements { display: flex; flex-direction: column; gap: 12px; margin-top: 10px; }
</style>
