import type { GetSupplierInvoiceParams, SapProxyResponse } from '@/tools/sap_s4hana/types'
import {
  baseProxyBody,
  buildEntityQuery,
  quoteOdataKey,
  SAP_PROXY_URL,
  transformSapProxyResponse,
} from '@/tools/sap_s4hana/utils'
import type { ToolConfig } from '@/tools/types'

export const getSupplierInvoiceTool: ToolConfig<GetSupplierInvoiceParams, SapProxyResponse> = {
  id: 'sap_s4hana_get_supplier_invoice',
  name: 'SAP S/4HANA Get Supplier Invoice',
  description:
    'Retrieve a single supplier invoice by composite key (SupplierInvoice + FiscalYear) from SAP S/4HANA Cloud (API_SUPPLIERINVOICE_PROCESS_SRV, A_SupplierInvoice).',
  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',
    },
    supplierInvoice: {
      type: 'string',
      required: true,
      visibility: 'user-or-llm',
      description: 'SupplierInvoice key (string, up to 10 characters)',
    },
    fiscalYear: {
      type: 'string',
      required: true,
      visibility: 'user-or-llm',
      description: 'FiscalYear (4-character year, e.g., "2024")',
    },
    select: {
      type: 'string',
      required: false,
      visibility: 'user-or-llm',
      description: 'Comma-separated fields to return ($select)',
    },
    expand: {
      type: 'string',
      required: false,
      visibility: 'user-or-llm',
      description: 'Comma-separated navigation properties to expand ($expand)',
    },
  },
  request: {
    url: SAP_PROXY_URL,
    method: 'POST',
    headers: () => ({ 'Content-Type': 'application/json' }),
    body: (params) => ({
      ...baseProxyBody(params),
      service: 'API_SUPPLIERINVOICE_PROCESS_SRV',
      path: `/A_SupplierInvoice(SupplierInvoice=${quoteOdataKey(params.supplierInvoice)},FiscalYear=${quoteOdataKey(params.fiscalYear)})`,
      method: 'GET',
      query: buildEntityQuery(params),
    }),
  },
  transformResponse: transformSapProxyResponse,
  outputs: {
    status: { type: 'number', description: 'HTTP status code returned by SAP' },
    data: {
      type: 'json',
      description: 'OData v2 response envelope; entity at output.data.d',
      properties: {
        d: {
          type: 'json',
          description: 'A_SupplierInvoice entity',
          properties: {
            SupplierInvoice: { type: 'string', description: 'Supplier invoice number' },
            FiscalYear: { type: 'string', description: 'Fiscal year' },
            CompanyCode: { type: 'string', description: 'Company code' },
            DocumentDate: {
              type: 'string',
              description: 'Invoice document date',
              optional: true,
            },
            PostingDate: { type: 'string', description: 'Posting date', optional: true },
            InvoicingParty: {
              type: 'string',
              description: 'Invoicing party (supplier key)',
              optional: true,
            },
            InvoiceGrossAmount: {
              type: 'string',
              description: 'Gross invoice amount',
              optional: true,
            },
            DocumentCurrency: {
              type: 'string',
              description: 'Document currency',
              optional: true,
            },
            AccountingDocumentType: {
              type: 'string',
              description: 'Accounting document type',
              optional: true,
            },
            PaymentTerms: {
              type: 'string',
              description: 'Payment terms key',
              optional: true,
            },
            DueCalculationBaseDate: {
              type: 'string',
              description: 'Baseline date for due-date calculation',
              optional: true,
            },
            SupplierInvoiceIDByInvcgParty: {
              type: 'string',
              description: 'Reference number used by the invoicing party',
              optional: true,
            },
            PaymentMethod: {
              type: 'string',
              description: 'Payment method',
              optional: true,
            },
            TaxIsCalculatedAutomatically: {
              type: 'boolean',
              description: 'Whether tax is calculated automatically',
              optional: true,
            },
            ManualCashDiscount: {
              type: 'string',
              description: 'Manually entered cash discount amount',
              optional: true,
            },
            BusinessPlace: {
              type: 'string',
              description: 'Business place (jurisdiction code)',
              optional: true,
            },
          },
        },
      },
    },
  },
}