/**
 * Custom field definitions API hooks — CRUD for entity-level field definitions.
 */

import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
import { apiGet, apiPost, apiPatch, apiDelete } from './client';

export type CustomFieldType = 'text' | 'number' | 'date' | 'select' | 'multiselect' | 'boolean';

export type CustomFieldEntity = 'contact' | 'company';

export interface CustomFieldDefinition {
  id: string;
  tenant_id: string;
  entity: string;
  name: string;
  label: string;
  field_type: CustomFieldType;
  options: string[];
  default_value: any;
  required: boolean;
  is_active: boolean;
  sort_order: number;
  created_at: string;
  updated_at: string;
}

export interface CustomFieldDefinitionCreate {
  entity: string;
  name: string;
  label: string;
  field_type: CustomFieldType;
  options?: string[];
  default_value?: any;
  required?: boolean;
  is_active?: boolean;
  sort_order?: number;
}

export interface CustomFieldDefinitionUpdate {
  name?: string;
  label?: string;
  field_type?: CustomFieldType;
  options?: string[];
  default_value?: any;
  required?: boolean;
  is_active?: boolean;
  sort_order?: number;
}

export interface CustomFieldDefinitionsResponse {
  items: CustomFieldDefinition[];
  total: number;
}

/**
 * Fetch custom field definitions, optionally filtered by entity.
 */
export function useCustomFieldDefinitions(entity?: string) {
  return useQuery({
    queryKey: ['custom-field-definitions', entity ?? 'all'],
    queryFn: () => {
      const params = entity ? `?entity=${encodeURIComponent(entity)}` : '';
      return apiGet<CustomFieldDefinitionsResponse>(`/custom-fields/definitions${params}`);
    },
  });
}

/**
 * Create a new custom field definition.
 */
export function useCreateCustomFieldDefinition() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: (data: CustomFieldDefinitionCreate) =>
      apiPost<CustomFieldDefinition>('/custom-fields/definitions', data),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['custom-field-definitions'] });
    },
  });
}

/**
 * Update an existing custom field definition.
 */
export function useUpdateCustomFieldDefinition() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: ({ id, data }: { id: string; data: CustomFieldDefinitionUpdate }) =>
      apiPatch<CustomFieldDefinition>(`/custom-fields/definitions/${id}`, data),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['custom-field-definitions'] });
    },
  });
}

/**
 * Delete a custom field definition.
 */
export function useDeleteCustomFieldDefinition() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: (id: string) =>
      apiDelete<void>(`/custom-fields/definitions/${id}`),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['custom-field-definitions'] });
    },
  });
}