<template>
  <div>
    <div class="page-header">
      <h2>Applications</h2>
      <router-link to="/applications/new" class="btn btn-primary">Add Application</router-link>
    </div>

    <!-- Filters -->
    <div class="filters">
      <input
        v-model="search"
        type="text"
        class="form-control"
        placeholder="Search applications..."
        @input="debouncedSearch"
      />
      <select v-model="filter" class="form-control" @change="applyFilter">
        <option value="installable">Installable Applications</option>
        <option value="all">All Applications</option>
        <option value="hidden">Hidden Applications</option>
      </select>
    </div>

    <div class="card">
      <div v-if="loading" class="loading">Loading...</div>

      <template v-else>
        <div class="table-container">
          <table>
            <thead>
              <tr>
                <th style="width: 50px;">Files</th>
                <th style="width: 50px;">Docs</th>
                <th>Application Name</th>
                <th>Description</th>
                <th>Support Team</th>
                <th>Contacts</th>
                <th>Actions</th>
              </tr>
            </thead>
            <tbody>
              <tr v-for="app in applications" :key="app.appid" class="clickable-row" @click="$router.push(`/applications/${app.appid}`)">
                <td class="icon-cell">
                  <a v-if="app.installpath" :href="fileHref(app.installpath)" target="_blank" title="Download Installation Files" class="icon-download">
                    &#x2B07;
                  </a>
                  <a v-else-if="app.applicationlink" :href="fileHref(app.applicationlink)" target="_blank" title="Application Link" class="icon-link">
                    &#x1F517;
                  </a>
                </td>
                <td class="icon-cell">
                  <a v-if="app.documentationpath" :href="fileHref(app.documentationpath)" target="_blank" title="View Documentation" class="icon-docs">
                    &#x1F4C4;
                  </a>
                </td>
                <td>
                  <router-link :to="`/applications/${app.appid}`">
                    {{ app.appname }}
                  </router-link>
                  <span class="app-flags">
                    <span v-if="app.isinstallable" class="badge badge-info badge-sm">Installable</span>
                    <span v-if="app.islicenced" class="badge badge-warning badge-sm">Licensed</span>
                    <span v-if="app.isprinter" class="badge badge-secondary badge-sm">Printer</span>
                  </span>
                </td>
                <td class="description">{{ app.appdescription || '-' }}</td>
                <td>{{ app.supportteamname || '-' }}</td>
                <td>{{ app.contacts && app.contacts.length ? app.contacts.map(c => c.name).join(', ') : '-' }}</td>
                <td class="actions" @click.stop>
                  <router-link
                    :to="`/applications/${app.appid}`"
                    class="btn btn-secondary btn-sm"
                  >
                    View
                  </router-link>
                </td>
              </tr>
              <tr v-if="applications.length === 0">
                <td colspan="7" style="text-align: center; color: var(--text-light);">
                  No applications found
                </td>
              </tr>
            </tbody>
          </table>
        </div>

        <!-- Pagination -->
        <PaginationBar
          :page="page"
          :totalPages="totalPages"
          :perPage="perPage"
          @update:page="goToPage"
          @update:perPage="changePerPage"
        />
      </template>
    </div>
  </div>
</template>

<script setup>
import { ref, onMounted } from 'vue'
import { applicationsApi } from '@/api'
import PaginationBar from '@/components/PaginationBar.vue'
import { useListQuery } from '@/composables/listQuery'
import { fileHref } from '@/utils/basePath'

const applications = ref([])
const loading = ref(true)
const { page, search, setPage, setSearch } = useListQuery({ onChange: loadApplications })
const filter = ref('installable')
const totalPages = ref(1)
const perPage = ref(20)

let searchTimeout = null

onMounted(() => {
  loadApplications()
})

// A filter change must go back to page 1. Selecting a filter while on page 5
// asked the server for page 5 of a result set that now has one page, and the
// list came back empty as though the filter matched nothing.
//
// setPage(1) writes the URL, which the composable's watcher picks up and
// answers with onChange - so calling the loader as well would fetch twice.
// Load directly only when already on page 1, where nothing changes and the
// watcher stays silent.
function applyFilter() {
  if (page.value > 1) setPage(1)
  else loadApplications()
}

async function loadApplications() {
  loading.value = true
  try {
    const params = {
      page: page.value,
      perpage: perPage.value,
      search: search.value || undefined
    }

    // Apply filter
    if (filter.value === 'installable') {
      params.installable = true
    } else if (filter.value === 'hidden') {
      params.hidden = true
    }

    const response = await applicationsApi.list(params)
    applications.value = response.data.data || []
    totalPages.value = response.data.meta?.pagination?.totalpages || response.data.meta?.pagination?.total_pages || 1
  } catch (error) {
    console.error('Error loading applications:', error)
  } finally {
    loading.value = false
  }
}

function debouncedSearch() {
  clearTimeout(searchTimeout)
  searchTimeout = setTimeout(() => {
    setSearch(search.value)
    loadApplications()
  }, 300)
}

function goToPage(p) {
  setPage(p)
  loadApplications()
}

function changePerPage(newPerPage) {
  perPage.value = newPerPage
  setPage(1)
  loadApplications()
}
</script>

<style scoped>
/* Application list specific styles */
.icon-cell {
  text-align: center;
  width: 50px;
}

.icon-cell a {
  font-size: 1.25rem;
  text-decoration: none;
}

.icon-download {
  color: var(--success);
}

.icon-link {
  color: var(--link);
}

.icon-docs {
  color: var(--secondary);
}

.icon-cell a:hover {
  opacity: 0.7;
}

.app-flags {
  display: inline-flex;
  gap: 0.375rem;
  flex-wrap: wrap;
  margin-left: 0.5rem;
  vertical-align: middle;
}

.badge-sm {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
}

.description {
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-light);
}
</style>
