import type { ListCustomersParams, SapProxyResponse } from '@/tools/sap_s4hana/types'
import {
  baseProxyBody,
  buildOdataQuery,
  SAP_PROXY_URL,
  transformSapProxyResponse,
} from '@/tools/sap_s4hana/utils'
import type { ToolConfig } from '@/tools/types'

export const listCustomersTool: ToolConfig<ListCustomersParams, SapProxyResponse> = {
  id: 'sap_s4hana_list_customers',
  name: 'SAP S/4HANA List Customers',
  description:
    'List customers from SAP S/4HANA Cloud (API_BUSINESS_PARTNER, A_Customer) with optional OData $filter, $top, $skip, $orderby, $select, $expand.',
  version: '1.0.0',
  params: {
    subdomain: {
      type: 'string',
      required: false,
      visibility: 'user-only',
      description:
        'SAP BTP subaccount subdomain (technical name of your subaccount, not the S/4HANA host)',
    },
    region: {
      type: 'string',
      required: false,
      visibility: 'user-only',
      description: 'BTP region (e.g. eu10, us10)',
    },
    clientId: {
      type: 'string',
      required: false,
      visibility: 'user-only',
      description: 'OAuth client ID from the S/4HANA Communication Arrangement',
    },
    clientSecret: {
      type: 'string',
      required: false,
      visibility: 'user-only',
      description: 'OAuth client secret from the S/4HANA Communication Arrangement',
    },
    deploymentType: {
      type: 'string',
      required: false,
      visibility: 'user-only',
      description: 'Deployment type: cloud_public (default), cloud_private, or on_premise',
    },
    authType: {
      type: 'string',
      required: false,
      visibility: 'user-only',
      description: 'Authentication type: oauth_client_credentials (default) or basic',
    },
    baseUrl: {
      type: 'string',
      required: false,
      visibility: 'user-only',
      description: 'Base URL of the S/4HANA host (Cloud Private / On-Premise)',
    },
    tokenUrl: {
      type: 'string',
      required: false,
      visibility: 'user-only',
      description: 'OAuth token URL (Cloud Private / On-Premise + OAuth)',
    },
    username: {
      type: 'string',
      required: false,
      visibility: 'user-only',
      description: 'Username for HTTP Basic auth',
    },
    password: {
      type: 'string',
      required: false,
      visibility: 'user-only',
      description: 'Password for HTTP Basic auth',
    },
    filter: {
      type: 'string',
      required: false,
      visibility: 'user-or-llm',
      description: 'OData $filter expression (e.g., "CustomerAccountGroup eq \'Z001\'")',
    },
    top: {
      type: 'number',
      required: false,
      visibility: 'user-or-llm',
      description: 'Maximum results to return ($top)',
    },
    skip: {
      type: 'number',
      required: false,
      visibility: 'user-or-llm',
      description: 'Number of results to skip ($skip)',
    },
    orderBy: {
      type: 'string',
      required: false,
      visibility: 'user-or-llm',
      description: 'OData $orderby expression',
    },
    select: {
      type: 'string',
      required: false,
      visibility: 'user-or-llm',
      description: 'Comma-separated fields to return ($select)',
    },
    expand: {
      type: 'string',
      required: false,
      visibility: 'user-or-llm',
      description:
        'Comma-separated navigation properties to expand (e.g., "to_CustomerCompany,to_CustomerSalesArea")',
    },
  },
  request: {
    url: SAP_PROXY_URL,
    method: 'POST',
    headers: () => ({ 'Content-Type': 'application/json' }),
    body: (params) => ({
      ...baseProxyBody(params),
      service: 'API_BUSINESS_PARTNER',
      path: '/A_Customer',
      method: 'GET',
      query: buildOdataQuery(params),
    }),
  },
  transformResponse: transformSapProxyResponse,
  outputs: {
    status: { type: 'number', description: 'HTTP status code returned by SAP' },
    data: {
      type: 'json',
      description:
        'Array of A_Customer entities, or `{ results, __count?, __next? }` when pagination metadata is present (proxy unwraps the OData v2 `d` envelope). Properties below describe each customer item.',
      items: {
        type: 'object',
        properties: {
          Customer: { type: 'string', description: 'Customer key (up to 10 characters)' },
          CustomerName: { type: 'string', description: 'Name of customer' },
          CustomerFullName: { type: 'string', description: 'Full name of the customer' },
          CustomerAccountGroup: { type: 'string', description: 'Customer account group' },
          CustomerClassification: { type: 'string', description: 'Customer classification code' },
          CustomerCorporateGroup: { type: 'string', description: 'Corporate group code' },
          AuthorizationGroup: { type: 'string', description: 'Authorization group' },
          Supplier: { type: 'string', description: 'Linked supplier account number' },
          FiscalAddress: { type: 'string', description: 'Fiscal address ID' },
          Industry: { type: 'string', description: 'Industry key' },
          NielsenRegion: { type: 'string', description: 'Nielsen ID' },
          ResponsibleType: { type: 'string', description: 'Responsible type' },
          NFPartnerIsNaturalPerson: { type: 'string', description: 'Natural person indicator' },
          InternationalLocationNumber1: {
            type: 'string',
            description: 'International location number 1',
          },
          TaxNumberType: { type: 'string', description: 'Tax number type' },
          VATRegistration: { type: 'string', description: 'VAT registration number' },
          DeletionIndicator: { type: 'boolean', description: 'Central deletion flag' },
          OrderIsBlockedForCustomer: {
            type: 'string',
            description: 'Central order block reason code',
          },
          PostingIsBlocked: { type: 'boolean', description: 'Central posting block flag' },
          DeliveryIsBlocked: { type: 'string', description: 'Central delivery block reason code' },
          BillingIsBlockedForCustomer: {
            type: 'string',
            description: 'Central billing block reason code',
          },
          CreationDate: { type: 'string', description: 'Creation date (OData v2 epoch)' },
          CreatedByUser: { type: 'string', description: 'User who created the customer' },
        },
      },
    },
  },
}
