Re_Backend/src/services/form16SapSimulation.service.ts

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/**
* Form 16 SAP simulation for Credit Note and Debit Note generation.
* When real SAP APIs are integrated, replace calls to this service with actual SAP API calls
* and keep the same request/response shapes below.
*/
/** Dealer details sent to SAP for credit note generation */
export interface SapCreditNoteDealerDetails {
dealerCode: string;
dealerName?: string | null;
dealerEmail?: string | null;
dealerContact?: string | null;
/** Optional: address or other identifiers */
[key: string]: string | number | null | undefined;
}
/** Simulated SAP response for credit note generation (JSON response from SAP) */
export interface SapCreditNoteResponse {
success: boolean;
creditNoteNumber: string;
sapDocumentNumber: string;
amount: number;
issueDate: string;
financialYear?: string;
quarter?: string;
status: string;
message?: string;
}
/** Dealer info sent to SAP for debit note generation */
export interface SapDebitNoteDealerInfo {
dealerCode: string;
dealerName?: string | null;
dealerEmail?: string | null;
dealerContact?: string | null;
[key: string]: string | number | null | undefined;
}
/** Simulated SAP response for debit note generation (JSON response from SAP) */
export interface SapDebitNoteResponse {
success: boolean;
debitNoteNumber: string;
sapDocumentNumber: string;
amount: number;
issueDate: string;
status: string;
creditNoteNumber: string;
message?: string;
}
/**
* Simulate SAP credit note generation.
* Input: dealer details + amount. Output: credit note JSON (as from SAP).
* Replace this with real SAP API call when integrating.
*/
export function simulateCreditNoteFromSap(
dealerDetails: SapCreditNoteDealerDetails,
amount: number
): SapCreditNoteResponse {
const now = new Date();
const ts = now.getTime().toString(36).toUpperCase();
const code = (dealerDetails.dealerCode || 'XX').replace(/\s/g, '').slice(0, 8);
const creditNoteNumber = `CN-SAP-${now.getFullYear()}-${code}-${ts}`;
const sapDocumentNumber = `SAP-CN-${now.getFullYear()}${String(now.getMonth() + 1).padStart(2, '0')}${String(now.getDate()).padStart(2, '0')}-${ts.slice(-6)}`;
return {
success: true,
creditNoteNumber,
sapDocumentNumber,
amount: Number(amount),
issueDate: now.toISOString().split('T')[0],
status: 'issued',
message: 'Simulated SAP credit note (replace with real SAP integration)',
};
}
/**
* Simulate SAP debit note generation.
* Input: dealer code, dealer info, credit note number, amount. Output: debit note JSON (as from SAP).
* Replace this with real SAP API call when integrating.
*/
export function simulateDebitNoteFromSap(params: {
dealerCode: string;
dealerInfo: SapDebitNoteDealerInfo;
creditNoteNumber: string;
amount: number;
}): SapDebitNoteResponse {
const { dealerCode, dealerInfo, creditNoteNumber, amount } = params;
const now = new Date();
const ts = now.getTime().toString(36).toUpperCase();
const code = (dealerCode || 'XX').replace(/\s/g, '').slice(0, 8);
const debitNoteNumber = `DN-SAP-${now.getFullYear()}-${code}-${ts}`;
const sapDocumentNumber = `SAP-DN-${now.getFullYear()}${String(now.getMonth() + 1).padStart(2, '0')}${String(now.getDate()).padStart(2, '0')}-${ts.slice(-6)}`;
return {
success: true,
debitNoteNumber,
sapDocumentNumber,
amount: Number(amount),
issueDate: now.toISOString().split('T')[0],
status: 'issued',
creditNoteNumber: String(creditNoteNumber),
message: 'Simulated SAP debit note (replace with real SAP integration)',
};
}