<template>
  <div>
    <div class="page-header">
      <h2>Asset Statuses</h2>
      <button class="btn btn-primary" @click="openModal()">+ Add Status</button>
    </div>

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

      <template v-else>
        <div class="table-container">
          <table>
            <thead>
              <tr>
                <th>Status</th>
                <th>Color</th>
                <th>Description</th>
                <th>Actions</th>
              </tr>
            </thead>
            <tbody>
              <tr v-for="s in statuses" :key="s.statusid">
                <td>
                  <span class="status-badge" :style="getStatusStyle(s.color)">
                    {{ s.status }}
                  </span>
                </td>
                <td>
                  <span class="color-preview" :style="{ backgroundColor: s.color || '#6c757d' }"></span>
                  {{ s.color || 'default' }}
                </td>
                <td class="cell-truncate" :title="s.description">{{ s.description || '-' }}</td>
                <td class="actions">
                  <button
                    class="btn btn-secondary btn-sm"
                    @click="openModal(s)"
                  >
                    Edit
                  </button>
                  <button
                    class="btn btn-danger btn-sm"
                    @click="confirmDelete(s)"
                  >
                    Delete
                  </button>
                </td>
              </tr>
              <tr v-if="statuses.length === 0">
                <td colspan="4" style="text-align: center; color: var(--text-light);">
                  No statuses found
                </td>
              </tr>
            </tbody>
          </table>
        </div>

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

    <!-- Add/Edit Modal -->
    <div v-if="showModal" class="modal-overlay" @click.self="closeModal">
      <div class="modal">
        <div class="modal-header">
          <h3>{{ editingStatus ? 'Edit Status' : 'Add Status' }}</h3>
        </div>
        <form @submit.prevent="saveStatus">
          <div class="modal-body">
            <div class="form-group">
              <label for="status">Status Name *</label>
              <input
                id="status"
                v-model="form.status"
                type="text"
                class="form-control"
                required
              />
            </div>

            <div class="form-group">
              <label>Color</label>
              <ColorSwatchPicker v-model="form.color" />
              <small class="form-hint">Used in UI to visually distinguish statuses</small>
            </div>

            <div class="form-group">
              <label for="description">Description</label>
              <textarea
                id="description"
                v-model="form.description"
                class="form-control"
                rows="3"
              ></textarea>
            </div>

            <div v-if="error" class="error-message">{{ error }}</div>
          </div>
          <div class="modal-footer">
            <button type="button" class="btn btn-secondary" @click="closeModal">Cancel</button>
            <button type="submit" class="btn btn-primary" :disabled="saving">
              {{ saving ? 'Saving...' : 'Save' }}
            </button>
          </div>
        </form>
      </div>
    </div>

    <!-- Delete Confirmation Modal -->
    <div v-if="showDeleteModal" class="modal-overlay" @click.self="showDeleteModal = false">
      <div class="modal">
        <div class="modal-header">
          <h3>Delete Status</h3>
        </div>
        <div class="modal-body">
          <p>Are you sure you want to delete <strong>{{ statusToDelete?.status }}</strong>?</p>
          <p style="color: var(--text-light); font-size: 0.875rem;">
            Cannot delete if assets are using this status.
          </p>
        </div>
        <div class="modal-footer">
          <button class="btn btn-secondary" @click="showDeleteModal = false">Cancel</button>
          <button class="btn btn-danger" @click="deleteStatus">Delete</button>
        </div>
      </div>
    </div>
  </div>
</template>

<script setup>
import { ref, onMounted } from 'vue'
import { assetsApi } from '../../api'
import PaginationBar from '../../components/PaginationBar.vue'
import ColorSwatchPicker from '@/components/ColorSwatchPicker.vue'
import { useToast } from '../../composables/toast'
import { apiError } from '../../utils/apiError'
import { useListQuery } from '@/composables/listQuery'
const toast = useToast()

const statuses = ref([])
const loading = ref(true)
const { page, setPage } = useListQuery({ onChange: loadStatuses })
const totalPages = ref(1)
const perPage = ref(20)

const showModal = ref(false)
const editingStatus = ref(null)
const saving = ref(false)
const error = ref('')

const showDeleteModal = ref(false)
const statusToDelete = ref(null)

const form = ref({
  status: '',
  color: '#6c757d',
  description: ''
})

onMounted(() => {
  loadStatuses()
})

async function loadStatuses() {
  loading.value = true
  try {
    const params = {
      page: page.value,
      perpage: perPage.value
    }

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

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

function changePerPage(newPerPage) {
  perPage.value = newPerPage
  setPage(1)
  loadStatuses()
}

function openModal(s = null) {
  editingStatus.value = s
  if (s) {
    form.value = {
      status: s.status || '',
      color: s.color || '#6c757d',
      description: s.description || ''
    }
  } else {
    form.value = {
      status: '',
      color: '#6c757d',
      description: ''
    }
  }
  error.value = ''
  showModal.value = true
}

function closeModal() {
  showModal.value = false
  editingStatus.value = null
}

async function saveStatus() {
  error.value = ''
  saving.value = true

  try {
    if (editingStatus.value) {
      await assetsApi.statuses.update(editingStatus.value.statusid, form.value)
    } else {
      await assetsApi.statuses.create(form.value)
    }
    closeModal()
    loadStatuses()
  } catch (err) {
    console.error('Error saving status:', err)
    error.value = apiError(err, 'Failed to save status')
  } finally {
    saving.value = false
  }
}

function confirmDelete(s) {
  statusToDelete.value = s
  showDeleteModal.value = true
}

async function deleteStatus() {
  try {
    await assetsApi.statuses.delete(statusToDelete.value.statusid)
    showDeleteModal.value = false
    statusToDelete.value = null
    loadStatuses()
  } catch (err) {
    console.error('Error deleting status:', err)
    error.value = apiError(err, 'Failed to delete status')
    toast.error(error.value)
  }
}

function getStatusStyle(color) {
  const bgColor = color || '#6c757d'
  return {
    backgroundColor: bgColor,
    color: isLightColor(bgColor) ? '#000' : '#fff'
  }
}

function isLightColor(color) {
  if (!color) return false
  const hex = color.replace('#', '')
  const r = parseInt(hex.substr(0, 2), 16)
  const g = parseInt(hex.substr(2, 2), 16)
  const b = parseInt(hex.substr(4, 2), 16)
  const brightness = (r * 299 + g * 587 + b * 114) / 1000
  return brightness > 128
}
</script>

<style scoped>
.status-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
}

.color-preview {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: 3px;
  margin-right: 0.5rem;
  vertical-align: middle;
  border: 1px solid var(--border-color);
}

.color-input-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.color-picker {
  width: 50px;
  height: 38px;
  padding: 2px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  cursor: pointer;
}

.form-hint {
  color: var(--text-light);
  font-size: 0.75rem;
  margin-top: 0.25rem;
}
</style>
