<script setup lang="ts">
import { ref, onMounted, computed } from 'vue'
import { useRoute, useRouter } from 'vue-router'
import { useOrganizationsStore } from '@/stores/organizations'
import { getApp, getDeeplinks, deleteDeeplink } from '@/api/client'
import type { DeeplinkTemplate, App, Environment } from '@/types'
import AppLayout from '@/components/AppLayout.vue'
import DeeplinkCard from '@/components/DeeplinkCard.vue'
import LaunchModal from '@/components/LaunchModal.vue'

const route = useRoute()
const router = useRouter()
const orgStore = useOrganizationsStore()

const orgId = route.params.orgId as string
const appId = route.params.appId as string

const app = ref<App | null>(null)
const deeplinks = ref<DeeplinkTemplate[]>([])
const loading = ref(true)
const error = ref<string | null>(null)

const launchDeeplink = ref<DeeplinkTemplate | null>(null)
const selectedEnvIndex = ref(0)
const selectedEnv = computed<Environment | null>(
  () => app.value?.environments[selectedEnvIndex.value] ?? null
)

const org = computed(() => orgStore.organizations.find(o => o.id === orgId))

async function loadData() {
  loading.value = true
  error.value = null
  try {
    const [appData, deeplinksData] = await Promise.all([
      getApp(orgId, appId),
      getDeeplinks(orgId, appId),
    ])
    app.value = appData
    deeplinks.value = deeplinksData
  } catch (e: unknown) {
    error.value = e instanceof Error ? e.message : 'Failed to load data'
  } finally {
    loading.value = false
  }
}

onMounted(loadData)

async function handleDeleteDeeplink(deeplinkId: string) {
  if (!confirm('Delete this deeplink? This cannot be undone.')) return
  try {
    await deleteDeeplink(orgId, appId, deeplinkId)
    deeplinks.value = deeplinks.value.filter(d => d.id !== deeplinkId)
    if (app.value) {
      app.value = { ...app.value, deeplinksCount: app.value.deeplinksCount - 1 }
    }
  } catch {
    alert('Failed to delete deeplink')
  }
}

function handleEditDeeplink(deeplink: DeeplinkTemplate) {
  router.push(`/org/${orgId}/app/${appId}/deeplink/${deeplink.id}/edit`)
}

function handleLaunchDeeplink(deeplink: DeeplinkTemplate) {
  launchDeeplink.value = deeplink
}

function closeLaunchModal() {
  launchDeeplink.value = null
}
</script>

<template>
  <AppLayout>
    <div class="app-detail-view">
      <!-- Loading -->
      <div v-if="loading" class="loading">
        <div class="spinner"></div>
        Loading…
      </div>

      <!-- Error -->
      <div v-else-if="error" class="error-message" style="margin: 20px">
        {{ error }}
        <button class="btn btn-secondary btn-sm" style="margin-left: 8px" @click="loadData">
          Retry
        </button>
      </div>

      <template v-else-if="app">
        <!-- Breadcrumb -->
        <div class="breadcrumb">
          <RouterLink :to="`/org/${orgId}`" class="breadcrumb-link">
            {{ org?.name || 'Org' }}
          </RouterLink>
          <span class="breadcrumb-sep">›</span>
          <span class="breadcrumb-current">{{ app.name }}</span>
        </div>

        <!-- Header -->
        <div class="content-header">
          <div>
            <h1 class="page-title">{{ app.name }}</h1>
            <div class="app-envs">
              <button
                v-for="(env, idx) in app.environments"
                :key="env.name"
                :class="['env-chip', { 'env-chip--active': selectedEnvIndex === idx }]"
                @click="selectedEnvIndex = idx"
              >
                {{ env.name }}
              </button>
            </div>
          </div>
          <RouterLink
            :to="`/org/${orgId}/app/${appId}/add-deeplink`"
            class="btn btn-primary"
          >
            <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5">
              <path d="M12 5v14M5 12h14"/>
            </svg>
            Add Deeplink
          </RouterLink>
        </div>

        <!-- Empty state -->
        <div v-if="deeplinks.length === 0" class="empty-state">
          <div class="empty-state-icon">🔗</div>
          <h3>No deeplinks yet</h3>
          <p>Add your first deeplink template to start launching.</p>
          <RouterLink
            :to="`/org/${orgId}/app/${appId}/add-deeplink`"
            class="btn btn-primary"
            style="margin-top: 16px; display: inline-flex;"
          >
            Add Deeplink
          </RouterLink>
        </div>

        <!-- Deeplinks list -->
        <div v-else class="deeplinks-list">
          <DeeplinkCard
            v-for="deeplink in deeplinks"
            :key="deeplink.id"
            :deeplink="deeplink"
            :orgId="orgId"
            :appId="appId"
            :environment="selectedEnv"
            @launch="handleLaunchDeeplink"
          />
        </div>
      </template>
    </div>

    <!-- Launch modal -->
    <Teleport to="body">
      <LaunchModal
        v-if="launchDeeplink && app && selectedEnv"
        :deeplink="launchDeeplink"
        :app="app"
        :environment="selectedEnv"
        @close="closeLaunchModal"
        @edit="dl => { closeLaunchModal(); handleEditDeeplink(dl) }"
        @delete="id => { closeLaunchModal(); handleDeleteDeeplink(id) }"
      />
    </Teleport>
  </AppLayout>
</template>

<style scoped>
.app-detail-view {
  height: 100%;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 16px 24px 0;
  font-size: 13px;
}

.breadcrumb-link {
  color: var(--color-text-muted);
  text-decoration: none;
}

.breadcrumb-link:hover {
  color: var(--color-primary);
}

.breadcrumb-sep {
  color: var(--color-border);
}

.breadcrumb-current {
  color: var(--color-text);
  font-weight: 500;
}

.content-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 12px 24px 16px;
  gap: 12px;
}

.page-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.app-envs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.env-chip {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}

.env-chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.env-chip--active,
.env-chip--active:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.deeplinks-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0 24px 24px;
}

@media (max-width: 600px) {
  .breadcrumb {
    padding: 12px 16px 0;
  }
  .content-header {
    padding: 12px 16px 12px;
  }
  .deeplinks-list {
    padding: 0 16px 16px;
  }
}
</style>