<template>
  <v-alert
    v-if="overdueCount > 0 && !dismissed"
    type="warning"
    variant="elevated"
    class="dues-overdue-banner mb-6"
    prominent
    border="start"
  >
    <template #prepend>
      <v-icon size="32">mdi-alert-circle</v-icon>
    </template>
    
    <template #title>
      <span class="text-h6 font-weight-bold">
        Dues Overdue - {{ overdueCount }} Member{{ overdueCount > 1 ? 's' : '' }} Affected
      </span>
    </template>
    
    <div class="mt-2">
      <p class="mb-3">
        {{ overdueCount }} member{{ overdueCount > 1 ? 's have' : ' has' }} dues that are more than 1 year overdue. 
        These accounts have been automatically marked as inactive.
      </p>
      
      <!-- Detailed Overdue List -->
      <v-expansion-panels
        v-if="overdueMembers && overdueMembers.length > 0"
        class="mb-4"
        variant="accordion"
      >
        <v-expansion-panel
          title="View Overdue Details"
          :text="`Click to see all ${overdueCount} overdue members and their specific overdue durations`"
        >
          <template #text>
            <v-list class="pa-0">
              <v-list-item
                v-for="member in overdueMembers"
                :key="member.id"
                class="overdue-member-item"
              >
                <template #prepend>
                  <v-avatar
                    :color="member.isInactive ? 'grey' : 'warning'"
                    size="32"
                    class="mr-3"
                  >
                    <v-icon color="white" size="16">
                      {{ member.isInactive ? 'mdi-account-off' : 'mdi-account-alert' }}
                    </v-icon>
                  </v-avatar>
                </template>
                
                <v-list-item-title class="font-weight-medium">
                  {{ member.name }}
                </v-list-item-title>
                
                <v-list-item-subtitle>
                  {{ member.email }}
                </v-list-item-subtitle>
                
                <template #append>
                  <div class="text-right">
                    <v-chip
                      :color="member.isInactive ? 'grey' : 'error'"
                      size="small"
                      variant="flat"
                      class="mb-1"
                    >
                      <v-icon start size="12">mdi-clock-alert</v-icon>
                      {{ member.overdueDuration }}
                    </v-chip>
                    <br>
                    <v-chip
                      :color="member.isInactive ? 'grey' : 'warning'"
                      size="x-small"
                      variant="tonal"
                    >
                      {{ member.isInactive ? 'Inactive' : member.status }}
                    </v-chip>
                  </div>
                </template>
              </v-list-item>
            </v-list>
          </template>
        </v-expansion-panel>
      </v-expansion-panels>
      
      <div class="d-flex flex-wrap gap-2 align-center">
        <v-btn
          color="warning"
          variant="elevated"
          size="small"
          @click="$emit('view-overdue')"
        >
          <v-icon start>mdi-eye</v-icon>
          View Overdue Members
        </v-btn>
        
        <v-btn
          v-if="canUpdateStatuses"
          color="primary"
          variant="outlined"
          size="small"
          :loading="updatingStatuses"
          @click="updateOverdueStatuses"
        >
          <v-icon start>mdi-refresh</v-icon>
          Update Member Statuses
        </v-btn>
        
        <v-btn
          v-if="canSendReminders"
          color="secondary"
          variant="outlined"
          size="small"
          @click="$emit('send-reminders')"
        >
          <v-icon start>mdi-email-multiple</v-icon>
          Send Reminders
        </v-btn>
        
        <v-spacer />
        
        <v-btn
          icon
          size="small"
          variant="text"
          @click="dismissed = true"
        >
          <v-icon>mdi-close</v-icon>
        </v-btn>
      </div>
    </div>
  </v-alert>
</template>

<script setup lang="ts">
interface OverdueMember {
  id: string;
  name: string;
  email: string;
  status: string;
  overdueDuration: string;
  totalMonthsOverdue: number;
  isInactive: boolean;
}

interface Props {
  overdueCount: number;
  canUpdateStatuses?: boolean;
  canSendReminders?: boolean;
  refreshTrigger?: number;
}

interface Emits {
  (e: 'view-overdue'): void;
  (e: 'send-reminders'): void;
  (e: 'statuses-updated', count: number): void;
}

const props = withDefaults(defineProps<Props>(), {
  canUpdateStatuses: false,
  canSendReminders: false,
  refreshTrigger: 0
});

const emit = defineEmits<Emits>();

// State
const dismissed = ref(false);
const updatingStatuses = ref(false);
const overdueMembers = ref<OverdueMember[]>([]);

// Load overdue member details
const loadOverdueDetails = async () => {
  try {
    const response = await $fetch<{
      success: boolean;
      data: { 
        count: number;
        overdueMembers: OverdueMember[];
      };
    }>('/api/members/overdue-count');

    if (response.success) {
      overdueMembers.value = response.data.overdueMembers || [];
    }
  } catch (error: any) {
    console.error('Error loading overdue details:', error);
    overdueMembers.value = [];
  }
};

// Update overdue member statuses
const updateOverdueStatuses = async () => {
  updatingStatuses.value = true;
  
  try {
    const response = await $fetch<{
      success: boolean;
      data: { updatedCount: number };
      message?: string;
    }>('/api/members/update-overdue-statuses', {
      method: 'POST'
    });

    if (response.success) {
      emit('statuses-updated', response.data.updatedCount);
      console.log(`Updated ${response.data.updatedCount} overdue member statuses`);
      
      // Refresh overdue details after update
      await loadOverdueDetails();
    } else {
      throw new Error(response.message || 'Failed to update statuses');
    }
  } catch (error: any) {
    console.error('Error updating overdue statuses:', error);
    // Show error notification if needed
  } finally {
    updatingStatuses.value = false;
  }
};

// Reset dismissed state when refresh trigger changes
watch(() => props.refreshTrigger, () => {
  dismissed.value = false;
  loadOverdueDetails(); // Refresh data
});

// Watch for overdueCount changes and reset dismissed
watch(() => props.overdueCount, (newCount, oldCount) => {
  if (newCount > oldCount) {
    dismissed.value = false;
    loadOverdueDetails(); // Load details when count changes
  }
});

// Load details on component mount
onMounted(() => {
  if (props.overdueCount > 0) {
    loadOverdueDetails();
  }
});
</script>

<style scoped>
.dues-overdue-banner {
  border-radius: 12px !important;
  box-shadow: 0 4px 12px rgba(255, 152, 0, 0.2) !important;
}

.dues-overdue-banner :deep(.v-alert__content) {
  width: 100%;
}

.gap-2 {
  gap: 8px;
}

/* Mobile responsive */
@media (max-width: 600px) {
  .d-flex.flex-wrap {
    flex-direction: column;
    align-items: stretch !important;
  }
  
  .d-flex.flex-wrap .v-btn {
    margin-bottom: 8px;
  }
  
  .v-spacer {
    display: none;
  }
}
</style>
