<template>
  <div>
    <div class="page-header">
      <h1>Warranty Report</h1>
      <div class="header-actions">
        <button v-if="!loading" class="btn btn-secondary" @click="exportCSV">Export CSV</button>
        <EmailReportButton v-if="!loading" subject="Warranty Report"
          :columns="emailColumns" :rows="emailRows" />
        <router-link to="/reports" class="btn btn-secondary">Back to Reports</router-link>
      </div>
    </div>

    <div v-if="loading" class="loading">Loading...</div>
    <template v-else>
      <div class="summary-row">
        <div v-for="b in bucketOrder" :key="b.key" class="summary-card" :style="cardStyle(b.color)">
          <span class="summary-count">{{ counts[b.key] || 0 }}</span>
          <span class="summary-label">{{ b.label }}</span>
        </div>
      </div>

      <template v-for="b in bucketOrder" :key="b.key">
      <div class="bucket card" v-if="(buckets[b.key] || []).length">
        <h3 class="bucket-title">
          <span class="dot" :style="{ background: b.color }"></span>
          {{ b.label }} ({{ (buckets[b.key] || []).length }})
        </h3>
        <div class="table-container">
          <table>
            <thead>
              <tr>
                <th>Vendor</th>
                <th>Service Level</th>
                <th>Ends</th>
                <th>Covers</th>
                <th>Machine #</th>
              </tr>
            </thead>
            <tbody>
              <tr v-for="w in buckets[b.key]" :key="w.warrantyid">
                <td><strong>{{ w.vendor }}</strong></td>
                <td class="servicelevel-cell" :title="w.servicelevel">{{ w.servicelevel || '-' }}</td>
                <td>{{ w.enddate ? formatDate(w.enddate) : '-' }}</td>
                <td>
                  <router-link v-for="a in w.assets" :key="a.assetid" :to="assetLink(a)" class="asset-chip">{{ a.assetnumber }}</router-link>
                  <span v-if="!w.assets.length" class="muted">-</span>
                </td>
                <td>
                  <template v-for="a in w.assets" :key="`m-${a.assetid}`">
                    <MachineMapChip v-if="a.machine" :machine="a.machine" />
                  </template>
                  <span v-if="!w.assets.some(a => a.machine)" class="muted">-</span>
                </td>
              </tr>
            </tbody>
          </table>
        </div>
      </div>
      </template>
    </template>
  </div>
</template>

<script setup>
import { ref, computed, onMounted } from 'vue'
import { warrantyApi } from '@/api'
import EmailReportButton from '@/components/EmailReportButton.vue'
import MachineMapChip from '../components/MachineMapChip.vue'

const loading = ref(true)
const counts = ref({})
const buckets = ref({})

const emailColumns = [
  { key: 'bucket', label: 'Status' },
  { key: 'vendor', label: 'Vendor' },
  { key: 'servicelevel', label: 'Service Level' },
  { key: 'enddate', label: 'Ends' },
  { key: 'assets', label: 'Covers' },
]

// Flatten the buckets into one row per warranty for the emailed table.
const emailRows = computed(() => {
  const rows = []
  for (const b of bucketOrder) {
    for (const w of buckets.value[b.key] || []) {
      rows.push({
        bucket: b.label,
        vendor: w.vendor || '',
        servicelevel: w.servicelevel || '',
        enddate: w.enddate || '',
        assets: (w.assets || []).map(a => a.assetnumber).join(', '),
      })
    }
  }
  return rows
})

const bucketOrder = [
  { key: 'expired', label: 'Expired', color: '#F44336' },
  { key: 'expiring', label: 'Expiring Soon', color: '#FF9800' },
  { key: 'active', label: 'Active', color: '#4CAF50' },
  { key: 'unknown', label: 'Unknown', color: '#9E9E9E' },
]

function formatDate(d) { return new Date(d + 'T00:00:00').toLocaleDateString() }
function cardStyle(color) { return { borderTop: `3px solid ${color}` } }
function assetLink(a) {
  const map = { computer: '/pcs/', printer: '/printers/', network_device: '/network/', machine: '/machines/', measuring_tool: '/measuringtools/by-asset/' }
  return (map[a.assettypename] || '/assets/') + a.assetid
}

function exportCSV() {
  // one row per warranty, covered assets joined with ;
  const quote = value => `"${String(value ?? '').replace(/"/g, '""')}"`
  const rows = [['bucket', 'vendor', 'servicelevel', 'enddate', 'assets']]
  for (const b of bucketOrder) {
    for (const w of buckets.value[b.key] || []) {
      rows.push([
        b.label, w.vendor || '', w.servicelevel || '', w.enddate || '',
        (w.assets || []).map(a => a.assetnumber).join('; ')
      ])
    }
  }
  const csv = rows.map(row => row.map(quote).join(',')).join('\n')
  const link = document.createElement('a')
  link.href = URL.createObjectURL(new Blob([csv], { type: 'text/csv' }))
  link.download = 'warranty_report.csv'
  link.click()
  URL.revokeObjectURL(link.href)
}

onMounted(async () => {
  try {
    const response = await warrantyApi.report()
    counts.value = response.data.data.counts || {}
    buckets.value = response.data.data.buckets || {}
  } catch (err) {
    console.error('Error loading warranty report:', err)
  } finally {
    loading.value = false
  }
})
</script>

<style scoped>
.summary-row { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.summary-card {
  flex: 1; min-width: 140px; padding: 1rem 1.25rem; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: 8px; display: flex; flex-direction: column; gap: 0.25rem;
}
.summary-count { font-size: 1.8rem; font-weight: 700; color: var(--text); }
.summary-label { font-size: 0.85rem; color: var(--text-light); }
.bucket { margin-bottom: 1.25rem; }
.bucket-title { display: flex; align-items: center; gap: 0.5rem; margin: 0 0 0.75rem; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.asset-chip {
  display: inline-block; padding: 0.15rem 0.55rem; margin: 0 0.25rem 0.25rem 0;
  background: var(--bg); border-radius: 12px; font-size: 0.8rem; text-decoration: none; color: var(--text);
}
.muted { color: var(--text-light); }
.header-actions { display: flex; gap: 0.5rem; }
.servicelevel-cell { max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
</style>
