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1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 | // ================================================================ // PAYROLL SERVICES — Configuration, Components, Structures, // Compensation, Calendars, Inputs, Runs, Loans, Advances, // Reimbursements, Benefits, Payslips, Payments, Accounting, // Off-Cycle, F&F, Import/Export, Dashboard // ================================================================ import { Injectable, BadRequestException, NotFoundException, ForbiddenException, } from '@nestjs/common'; import { InjectModel } from '@nestjs/mongoose'; import { Model, Types } from 'mongoose'; import { PayrollConfiguration, PayrollConfigurationVersion, PayrollCountryConfiguration, SalaryComponent, SalaryComponentVersion, SalaryComponentDependency, SalaryComponentSlab, SalaryComponentFormula, PayrollFormulaDefinition, PayrollFormulaTestCase, SalaryStructure, SalaryStructureVersion, SalaryStructureComponent, SalaryStructureAssignmentRule, EmployeeCompensation, EmployeeCompensationVersion, EmployeeSalaryComponent, CompensationRevision, CompensationHistory, CompensationApproval, PayrollCalendar, PayrollPeriod, PayrollGroup, PayrollGroupAssignment, PayrollCutoffConfiguration, PayrollInput, PayrollInputBatch, PayrollInputValidation, PayrollAttendanceInput, PayrollLeaveInput, PayrollOvertimeInput, PayrollRun, PayrollRunEmployee, PayrollRunStage, PayrollRunApproval, PayrollRunHistory, PayrollCalculationResult, PayrollCalculationComponent, PayrollRunValidation, PayrollRunException, BonusPlan, BonusAward, IncentivePlan, IncentiveEarning, LoanType, EmployeeLoan, LoanApproval, LoanRepaymentSchedule, LoanRepayment, LoanAdjustment, LoanForeclosure, SalaryAdvancePolicy, SalaryAdvanceRequest, SalaryAdvanceApproval, SalaryAdvanceRecoverySchedule, ReimbursementType, ReimbursementPolicy, ReimbursementClaim, ReimbursementItem, ReimbursementApproval, ReimbursementSettlement, BenefitPlan, EmployeeBenefitEnrollment, FlexibleBenefitPlan, FlexibleBenefitAllocation, FlexibleBenefitClaim, PayrollLock, PayrollReopenRequest, PayrollCorrectionBatch, Payslip, PayslipTemplate, PayslipDeliveryLog, PayrollPaymentBatch, PayrollPaymentInstruction, PayrollBankFile, PayrollPaymentReconciliation, PayrollAccountingMapping, PayrollJournalExport, PayrollCostAllocation, OffCyclePayrollRun, FullAndFinalSettlement, SettlementComponent, SettlementRecovery, SettlementApproval, PayrollImportJob, PayrollImportRow, PayrollExportJob, } from '../schemas'; import { PayrollFormulaEngine } from '../engines/payroll-formula.engine'; import { PayrollCalculationEngine } from '../engines/payroll-calculation.engine'; // ── 1. Configuration Service ── @Injectable() export class PayrollConfigurationService { constructor( @InjectModel(PayrollConfiguration.name) private readonly model: Model<PayrollConfiguration>, @InjectModel(PayrollConfigurationVersion.name) private readonly versionModel: Model<PayrollConfigurationVersion>, @InjectModel(PayrollCountryConfiguration.name) private readonly countryModel: Model<PayrollCountryConfiguration>, ) {} async get(tenantId: string) { return this.model.findOne({ tenantId }).lean(); } async upsert(tenantId: string, data: Partial<PayrollConfiguration>) { const existing = await this.model.findOne({ tenantId }); if (existing) { if (existing.status === 'published') throw new BadRequestException( 'Published configuration is immutable. Create a new version.', ); return this.model .findOneAndUpdate({ tenantId }, { $set: data }, { new: true }) .lean(); } return this.model.create({ ...data, tenantId }); } async publish(tenantId: string, userId: string) { const config = await this.model.findOne({ tenantId }); if (!config) throw new NotFoundException('Configuration not found'); const version = config.version + 1; await this.versionModel.create({ tenantId, version, snapshot: config.toObject(), publishedBy: new Types.ObjectId(userId), }); return this.model .findOneAndUpdate( { tenantId }, { $set: { status: 'published', version } }, { new: true }, ) .lean(); } async getVersions(tenantId: string) { return this.versionModel.find({ tenantId }).sort({ version: -1 }).lean(); } async getCountryConfigs() { return this.countryModel.find({ isActive: true }).lean(); } } // ── 2. Salary Component Service ── @Injectable() export class SalaryComponentService { constructor( @InjectModel(SalaryComponent.name) private readonly model: Model<SalaryComponent>, @InjectModel(SalaryComponentVersion.name) private readonly versionModel: Model<SalaryComponentVersion>, @InjectModel(SalaryComponentDependency.name) private readonly depModel: Model<SalaryComponentDependency>, @InjectModel(SalaryComponentSlab.name) private readonly slabModel: Model<SalaryComponentSlab>, @InjectModel(SalaryComponentFormula.name) private readonly formulaModel: Model<SalaryComponentFormula>, private readonly formulaEngine: PayrollFormulaEngine, ) {} async list(tenantId: string, filters: Record<string, unknown> = {}) { return this.model .find({ tenantId, ...filters }) .sort({ priority: 1 }) .lean(); } async getById(tenantId: string, id: string) { const comp = await this.model.findOne({ _id: id, tenantId }).lean(); if (!comp) throw new NotFoundException('Component not found'); return comp; } async create(tenantId: string, data: Partial<SalaryComponent>) { const exists = await this.model.findOne({ tenantId, componentCode: data.componentCode, }); if (exists) throw new BadRequestException( `Component code ${data.componentCode} already exists`, ); if (data.formula) { const validation = this.formulaEngine.validate(data.formula); if (!validation.valid) throw new BadRequestException( `Formula errors: ${validation.errors.join(', ')}`, ); } return this.model.create({ ...data, tenantId }); } async update(tenantId: string, id: string, data: Partial<SalaryComponent>) { const comp = await this.model.findOne({ _id: id, tenantId }); if (!comp) throw new NotFoundException('Component not found'); if (data.formula) { const validation = this.formulaEngine.validate(data.formula); if (!validation.valid) throw new BadRequestException( `Formula errors: ${validation.errors.join(', ')}`, ); } return this.model .findOneAndUpdate({ _id: id, tenantId }, { $set: data }, { new: true }) .lean(); } async publish(tenantId: string, id: string, userId: string) { const comp = await this.model.findOne({ _id: id, tenantId }); if (!comp) throw new NotFoundException('Component not found'); const version = comp.version + 1; await this.versionModel.create({ tenantId, componentId: id, version, snapshot: comp.toObject(), publishedBy: new Types.ObjectId(userId), }); return this.model .findOneAndUpdate( { _id: id }, { $set: { status: 'active', version } }, { new: true }, ) .lean(); } async clone(tenantId: string, id: string) { const comp = await this.model.findOne({ _id: id, tenantId }).lean(); if (!comp) throw new NotFoundException('Component not found'); const { _id, componentCode, ...rest } = comp; return this.model.create({ ...rest, componentCode: `${componentCode}_COPY`, status: 'draft', version: 1, }); } async archive(tenantId: string, id: string) { return this.model .findOneAndUpdate( { _id: id, tenantId }, { $set: { status: 'archived' } }, { new: true }, ) .lean(); } async getSlabs(tenantId: string, componentId: string) { return this.slabModel .find({ tenantId, componentId }) .sort({ priority: 1 }) .lean(); } } // ── 3. Formula Service ── @Injectable() export class PayrollFormulaService { constructor( @InjectModel(PayrollFormulaDefinition.name) private readonly model: Model<PayrollFormulaDefinition>, @InjectModel(PayrollFormulaTestCase.name) private readonly testModel: Model<PayrollFormulaTestCase>, private readonly formulaEngine: PayrollFormulaEngine, ) {} async validate(expression: string) { return this.formulaEngine.validate(expression); } async preview(expression: string, variables: Record<string, number>) { return this.formulaEngine.preview(expression, variables); } async runTestCase(tenantId: string, testCaseId: string) { const tc = await this.testModel.findOne({ _id: testCaseId, tenantId }); if (!tc) throw new NotFoundException('Test case not found'); const formula = await this.model.findOne({ _id: tc.formulaId, tenantId }); if (!formula) throw new NotFoundException('Formula not found'); const result = this.formulaEngine.preview( formula.expression, tc.inputVariables, ); const passed = result.error ? false : Math.abs(result.result - tc.expectedOutput) < 0.01; await this.testModel.updateOne( { _id: testCaseId }, { $set: { actualOutput: result.result, result: passed ? 'passed' : 'failed', }, }, ); return { passed, expected: tc.expectedOutput, actual: result.result, error: result.error, }; } } // ── 4. Salary Structure Service ── @Injectable() export class SalaryStructureService { constructor( @InjectModel(SalaryStructure.name) private readonly model: Model<SalaryStructure>, @InjectModel(SalaryStructureVersion.name) private readonly versionModel: Model<SalaryStructureVersion>, @InjectModel(SalaryStructureComponent.name) private readonly compModel: Model<SalaryStructureComponent>, @InjectModel(SalaryStructureAssignmentRule.name) private readonly ruleModel: Model<SalaryStructureAssignmentRule>, ) {} async list(tenantId: string) { return this.model.find({ tenantId }).sort({ structureName: 1 }).lean(); } async getById(tenantId: string, id: string): Promise<any> { const s = await this.model.findOne({ _id: id, tenantId }).lean(); if (!s) throw new NotFoundException('Structure not found'); const components = await this.compModel .find({ tenantId, structureId: id }) .lean(); return { ...s, components }; } async create(tenantId: string, data: Partial<SalaryStructure>) { return this.model.create({ ...data, tenantId }); } async update(tenantId: string, id: string, data: Partial<SalaryStructure>) { return this.model .findOneAndUpdate({ _id: id, tenantId }, { $set: data }, { new: true }) .lean(); } async publish(tenantId: string, id: string, userId: string) { const s = await this.model.findOne({ _id: id, tenantId }); if (!s) throw new NotFoundException('Structure not found'); const version = s.version + 1; await this.versionModel.create({ tenantId, structureId: id, version, snapshot: s.toObject(), publishedBy: new Types.ObjectId(userId), }); return this.model .findOneAndUpdate( { _id: id }, { $set: { status: 'published', version } }, { new: true }, ) .lean(); } async clone(tenantId: string, id: string) { const s = await this.model.findOne({ _id: id, tenantId }).lean(); if (!s) throw new NotFoundException('Structure not found'); const { _id, structureCode, ...rest } = s; return this.model.create({ ...rest, structureCode: `${structureCode}_COPY`, status: 'draft', version: 1, }); } async assign( tenantId: string, id: string, data: Partial<SalaryStructureAssignmentRule>, ) { return this.ruleModel.create({ ...data, tenantId, structureId: id }); } } // ── 5. Employee Compensation Service ── @Injectable() export class EmployeeCompensationService { constructor( @InjectModel(EmployeeCompensation.name) private readonly model: Model<EmployeeCompensation>, @InjectModel(EmployeeCompensationVersion.name) private readonly versionModel: Model<EmployeeCompensationVersion>, @InjectModel(EmployeeSalaryComponent.name) private readonly empCompModel: Model<EmployeeSalaryComponent>, @InjectModel(CompensationRevision.name) private readonly revisionModel: Model<CompensationRevision>, @InjectModel(CompensationHistory.name) private readonly historyModel: Model<CompensationHistory>, @InjectModel(CompensationApproval.name) private readonly approvalModel: Model<CompensationApproval>, ) {} async getByEmployee(tenantId: string, employeeId: string): Promise<any> { const comp = await this.model .findOne({ tenantId, employeeId, status: 'active' }) .sort({ effectiveFrom: -1 }) .lean(); if (!comp) throw new NotFoundException('No active compensation found'); const components = await this.empCompModel .find({ tenantId, compensationId: comp._id }) .lean(); return { ...comp, components }; } async create( tenantId: string, employeeId: string, data: Partial<EmployeeCompensation>, userId: string, ) { // Supersede previous active compensation await this.model.updateMany( { tenantId, employeeId, status: 'active' }, { $set: { status: 'superseded' } }, ); const comp = await this.model.create({ ...data, tenantId, employeeId, createdBy: new Types.ObjectId(userId), }); await this.historyModel.create({ tenantId, employeeId, compensationId: comp._id, action: 'created', newValues: data, performedBy: new Types.ObjectId(userId), }); return comp; } async createRevision( tenantId: string, employeeId: string, data: Partial<CompensationRevision>, userId: string, ) { const current = await this.model .findOne({ tenantId, employeeId, status: 'active' }) .lean(); return this.revisionModel.create({ ...data, tenantId, employeeId, previousCompensationId: current?._id, previousCTC: current?.ctc ?? 0, createdBy: new Types.ObjectId(userId), }); } async approveRevision(tenantId: string, revisionId: string, userId: string) { const rev = await this.revisionModel.findOne({ _id: revisionId, tenantId }); if (!rev) throw new NotFoundException('Revision not found'); await this.revisionModel.updateOne( { _id: revisionId }, { $set: { approvalStatus: 'approved', approvedBy: new Types.ObjectId(userId), }, }, ); return { success: true }; } async getHistory(tenantId: string, employeeId: string) { return this.revisionModel .find({ tenantId, employeeId }) .sort({ effectiveFrom: -1 }) .lean(); } } // ── 6. Payroll Calendar & Group Service ── @Injectable() export class PayrollCalendarService { constructor( @InjectModel(PayrollCalendar.name) private readonly calendarModel: Model<PayrollCalendar>, @InjectModel(PayrollPeriod.name) private readonly periodModel: Model<PayrollPeriod>, @InjectModel(PayrollGroup.name) private readonly groupModel: Model<PayrollGroup>, @InjectModel(PayrollGroupAssignment.name) private readonly assignmentModel: Model<PayrollGroupAssignment>, ) {} async listCalendars(tenantId: string) { return this.calendarModel.find({ tenantId }).lean(); } async createCalendar(tenantId: string, data: Partial<PayrollCalendar>) { return this.calendarModel.create({ ...data, tenantId }); } async listGroups(tenantId: string) { return this.groupModel.find({ tenantId }).lean(); } async createGroup(tenantId: string, data: Partial<PayrollGroup>) { return this.groupModel.create({ ...data, tenantId }); } async assignGroup( tenantId: string, groupId: string, data: Partial<PayrollGroupAssignment>, ) { return this.assignmentModel.create({ ...data, tenantId, groupId }); } async listPeriods(tenantId: string, filters: Record<string, unknown> = {}) { return this.periodModel .find({ tenantId, ...filters }) .sort({ startDate: -1 }) .lean(); } async openPeriod(tenantId: string, periodId: string) { return this.periodModel .findOneAndUpdate( { _id: periodId, tenantId }, { $set: { status: 'open' } }, { new: true }, ) .lean(); } async closePeriod(tenantId: string, periodId: string) { return this.periodModel .findOneAndUpdate( { _id: periodId, tenantId }, { $set: { status: 'closed' } }, { new: true }, ) .lean(); } } // ── 7. Payroll Input Service ── @Injectable() export class PayrollInputService { constructor( @InjectModel(PayrollInput.name) private readonly model: Model<PayrollInput>, @InjectModel(PayrollInputBatch.name) private readonly batchModel: Model<PayrollInputBatch>, @InjectModel(PayrollInputValidation.name) private readonly validationModel: Model<PayrollInputValidation>, @InjectModel(PayrollAttendanceInput.name) private readonly attModel: Model<PayrollAttendanceInput>, @InjectModel(PayrollLeaveInput.name) private readonly leaveModel: Model<PayrollLeaveInput>, ) {} async list(tenantId: string, periodId: string) { return this.model.find({ tenantId, periodId }).lean(); } async create(tenantId: string, data: Partial<PayrollInput>) { return this.model.create({ ...data, tenantId }); } async createBulk( tenantId: string, inputs: Partial<PayrollInput>[], ): Promise<any> { return this.model.insertMany(inputs.map((i) => ({ ...i, tenantId }))); } async validate(tenantId: string, periodId: string) { const inputs = await this.model.find({ tenantId, periodId, status: 'pending', }); let valid = 0; let errors = 0; for (const input of inputs) { if (input.amount < 0) { await this.validationModel.create({ tenantId, inputId: input._id, severity: 'error', message: 'Negative amount', field: 'amount', }); await this.model.updateOne( { _id: input._id }, { $set: { status: 'rejected' } }, ); errors++; } else { await this.model.updateOne( { _id: input._id }, { $set: { status: 'validated' } }, ); valid++; } } return { valid, errors }; } async approve(tenantId: string, inputId: string) { return this.model .findOneAndUpdate( { _id: inputId, tenantId }, { $set: { status: 'approved' } }, { new: true }, ) .lean(); } } // ── 8. Payroll Run Service ── @Injectable() export class PayrollRunService { constructor( @InjectModel(PayrollRun.name) private readonly model: Model<PayrollRun>, @InjectModel(PayrollRunEmployee.name) private readonly empModel: Model<PayrollRunEmployee>, @InjectModel(PayrollRunStage.name) private readonly stageModel: Model<PayrollRunStage>, @InjectModel(PayrollRunApproval.name) private readonly approvalModel: Model<PayrollRunApproval>, @InjectModel(PayrollRunHistory.name) private readonly historyModel: Model<PayrollRunHistory>, @InjectModel(PayrollRunValidation.name) private readonly validationModel: Model<PayrollRunValidation>, @InjectModel(PayrollRunException.name) private readonly exceptionModel: Model<PayrollRunException>, @InjectModel(PayrollCalculationResult.name) private readonly resultModel: Model<PayrollCalculationResult>, @InjectModel(PayrollCalculationComponent.name) private readonly calcCompModel: Model<PayrollCalculationComponent>, @InjectModel(PayrollLock.name) private readonly lockModel: Model<PayrollLock>, private readonly calculationEngine: PayrollCalculationEngine, ) {} async list(tenantId: string) { return this.model.find({ tenantId }).sort({ createdAt: -1 }).lean(); } async getById(tenantId: string, id: string) { const run = await this.model.findOne({ _id: id, tenantId }).lean(); if (!run) throw new NotFoundException('Payroll run not found'); return run; } async create(tenantId: string, data: Partial<PayrollRun>, userId: string) { return this.model.create({ ...data, tenantId, createdBy: new Types.ObjectId(userId), }); } async calculate(tenantId: string, runId: string) { return this.calculationEngine.executeRun(tenantId, runId); } async submit(tenantId: string, runId: string, userId: string) { await this.recordHistory(tenantId, runId, 'submitted', userId); return this.model .findOneAndUpdate( { _id: runId, tenantId }, { $set: { status: 'review_pending' } }, { new: true }, ) .lean(); } async approve( tenantId: string, runId: string, userId: string, level: string, ) { await this.approvalModel.create({ tenantId, runId, approverId: new Types.ObjectId(userId), approvalLevel: level, status: 'approved', }); await this.recordHistory(tenantId, runId, 'approved', userId); return this.model .findOneAndUpdate( { _id: runId, tenantId }, { $set: { status: 'approved', approvedBy: new Types.ObjectId(userId), approvedAt: new Date(), }, }, { new: true }, ) .lean(); } async reject( tenantId: string, runId: string, userId: string, comments: string, ) { await this.approvalModel.create({ tenantId, runId, approverId: new Types.ObjectId(userId), approvalLevel: 'hr_review', status: 'rejected', comments, }); await this.recordHistory(tenantId, runId, 'rejected', userId); return this.model .findOneAndUpdate( { _id: runId, tenantId }, { $set: { status: 'calculation_pending' } }, { new: true }, ) .lean(); } async lock(tenantId: string, runId: string, userId: string) { await this.lockModel.create({ tenantId, runId, lockedBy: new Types.ObjectId(userId), lockedAt: new Date(), }); await this.resultModel.updateMany( { tenantId, runId }, { $set: { isLocked: true } }, ); await this.recordHistory(tenantId, runId, 'locked', userId); return this.model .findOneAndUpdate( { _id: runId, tenantId }, { $set: { status: 'locked', lockedAt: new Date() } }, { new: true }, ) .lean(); } async reopen(tenantId: string, runId: string, userId: string) { await this.recordHistory(tenantId, runId, 'reopened', userId); return this.model .findOneAndUpdate( { _id: runId, tenantId }, { $set: { status: 'reopened' } }, { new: true }, ) .lean(); } async cancel(tenantId: string, runId: string, userId: string) { await this.recordHistory(tenantId, runId, 'cancelled', userId); return this.model .findOneAndUpdate( { _id: runId, tenantId }, { $set: { status: 'cancelled' } }, { new: true }, ) .lean(); } async getEmployees(tenantId: string, runId: string) { return this.empModel.find({ tenantId, runId }).lean(); } async getExceptions(tenantId: string, runId: string) { return this.exceptionModel.find({ tenantId, runId }).lean(); } async getVariance(tenantId: string, runId: string) { const results = await this.resultModel.find({ tenantId, runId }).lean(); return { employees: results.length, totalGross: results.reduce((s, r) => s + r.grossEarnings, 0), totalNet: results.reduce((s, r) => s + r.netPay, 0), }; } private async recordHistory( tenantId: string, runId: string, action: string, userId: string, ) { const run = await this.model.findOne({ _id: runId, tenantId }); await this.historyModel.create({ tenantId, runId, action, previousStatus: run?.status, newStatus: action, performedBy: new Types.ObjectId(userId), }); } } // ── 9. Loan Service ── @Injectable() export class PayrollLoanService { constructor( @InjectModel(LoanType.name) private readonly typeModel: Model<LoanType>, @InjectModel(EmployeeLoan.name) private readonly loanModel: Model<EmployeeLoan>, @InjectModel(LoanApproval.name) private readonly approvalModel: Model<LoanApproval>, @InjectModel(LoanRepaymentSchedule.name) private readonly scheduleModel: Model<LoanRepaymentSchedule>, @InjectModel(LoanRepayment.name) private readonly repaymentModel: Model<LoanRepayment>, @InjectModel(LoanAdjustment.name) private readonly adjustmentModel: Model<LoanAdjustment>, @InjectModel(LoanForeclosure.name) private readonly foreclosureModel: Model<LoanForeclosure>, ) {} async list(tenantId: string, filters: Record<string, unknown> = {}) { return this.loanModel.find({ tenantId, ...filters }).lean(); } async getById(tenantId: string, id: string) { const loan = await this.loanModel.findOne({ _id: id, tenantId }).lean(); if (!loan) throw new NotFoundException('Loan not found'); return loan; } async create(tenantId: string, data: Partial<EmployeeLoan>, userId: string) { const loan = await this.loanModel.create({ ...data, tenantId, createdBy: new Types.ObjectId(userId), }); // Generate repayment schedule if (loan.tenureMonths > 0 && loan.principalAmount > 0) { await this.generateSchedule( tenantId, loan._id.toString(), loan.principalAmount, loan.interestRate, loan.tenureMonths, loan.interestType, ); } return loan; } async approve(tenantId: string, id: string, userId: string) { await this.approvalModel.create({ tenantId, loanId: id, approverId: new Types.ObjectId(userId), status: 'approved', }); return this.loanModel .findOneAndUpdate( { _id: id, tenantId }, { $set: { status: 'approved', approvedBy: new Types.ObjectId(userId) }, }, { new: true }, ) .lean(); } async reject(tenantId: string, id: string, userId: string, comments: string) { await this.approvalModel.create({ tenantId, loanId: id, approverId: new Types.ObjectId(userId), status: 'rejected', comments, }); return this.loanModel .findOneAndUpdate( { _id: id, tenantId }, { $set: { status: 'rejected' } }, { new: true }, ) .lean(); } async getSchedule(tenantId: string, loanId: string) { return this.scheduleModel .find({ tenantId, loanId }) .sort({ installmentNumber: 1 }) .lean(); } async reschedule( tenantId: string, loanId: string, newTenure: number, userId: string, ) { const loan = await this.loanModel.findOne({ _id: loanId, tenantId }); if (!loan) throw new NotFoundException('Loan not found'); await this.scheduleModel.deleteMany({ tenantId, loanId, status: 'pending', }); await this.generateSchedule( tenantId, loanId, loan.outstandingBalance, loan.interestRate, newTenure, loan.interestType, ); await this.adjustmentModel.create({ tenantId, loanId, adjustmentType: 'reschedule', details: { newTenure }, performedBy: new Types.ObjectId(userId), }); return { success: true }; } async foreclose( tenantId: string, loanId: string, waivedAmount: number, userId: string, ) { const loan = await this.loanModel.findOne({ _id: loanId, tenantId }); if (!loan) throw new NotFoundException('Loan not found'); const finalAmount = loan.outstandingBalance - waivedAmount; await this.foreclosureModel.create({ tenantId, loanId, outstandingAtForeclosure: loan.outstandingBalance, waivedAmount, finalSettlementAmount: finalAmount, foreclosureDate: new Date(), approvedBy: new Types.ObjectId(userId), }); return this.loanModel .findOneAndUpdate( { _id: loanId }, { $set: { status: 'foreclosed', outstandingBalance: 0 } }, { new: true }, ) .lean(); } private async generateSchedule( tenantId: string, loanId: string, principal: number, rate: number, months: number, interestType: string, ) { const schedules = []; let outstanding = principal; const monthlyRate = rate / 12 / 100; for (let i = 1; i <= months; i++) { let principalComp: number; let interestComp: number; if (interestType === 'interest_free') { principalComp = Math.round(principal / months); interestComp = 0; } else if (interestType === 'flat') { principalComp = Math.round(principal / months); interestComp = Math.round(principal * monthlyRate); } else { // Reducing balance EMI const emi = monthlyRate > 0 ? (principal * monthlyRate * Math.pow(1 + monthlyRate, months)) / (Math.pow(1 + monthlyRate, months) - 1) : principal / months; interestComp = Math.round(outstanding * monthlyRate); principalComp = Math.round(emi - interestComp); } outstanding -= principalComp; const dueDate = new Date(); dueDate.setMonth(dueDate.getMonth() + i); schedules.push({ tenantId, loanId, installmentNumber: i, dueDate, principalComponent: principalComp, interestComponent: interestComp, totalInstallment: principalComp + interestComp, outstandingAfter: Math.max(0, outstanding), }); } await this.scheduleModel.insertMany(schedules); } } // ── 10. Salary Advance Service ── @Injectable() export class SalaryAdvanceService { constructor( @InjectModel(SalaryAdvancePolicy.name) private readonly policyModel: Model<SalaryAdvancePolicy>, @InjectModel(SalaryAdvanceRequest.name) private readonly requestModel: Model<SalaryAdvanceRequest>, @InjectModel(SalaryAdvanceApproval.name) private readonly approvalModel: Model<SalaryAdvanceApproval>, @InjectModel(SalaryAdvanceRecoverySchedule.name) private readonly scheduleModel: Model<SalaryAdvanceRecoverySchedule>, ) {} async list(tenantId: string, filters: Record<string, unknown> = {}) { return this.requestModel.find({ tenantId, ...filters }).lean(); } async create( tenantId: string, data: Partial<SalaryAdvanceRequest>, userId: string, ) { return this.requestModel.create({ ...data, tenantId, createdBy: new Types.ObjectId(userId), }); } async approve(tenantId: string, id: string, userId: string, amount: number) { await this.approvalModel.create({ tenantId, advanceId: id, approverId: new Types.ObjectId(userId), status: 'approved', }); const advance = await this.requestModel.findOneAndUpdate( { _id: id, tenantId }, { $set: { status: 'approved', approvedAmount: amount, outstandingAmount: amount, approvedBy: new Types.ObjectId(userId), }, }, { new: true }, ); if (advance && advance.recoveryMonths > 0) { const perMonth = Math.round(amount / advance.recoveryMonths); const schedules = []; for (let i = 1; i <= advance.recoveryMonths; i++) { schedules.push({ tenantId, advanceId: id, installmentNumber: i, amount: i === advance.recoveryMonths ? amount - perMonth * (advance.recoveryMonths - 1) : perMonth, }); } await this.scheduleModel.insertMany(schedules); } return advance; } } // ── 11. Reimbursement Service ── @Injectable() export class PayrollReimbursementService { constructor( @InjectModel(ReimbursementType.name) private readonly typeModel: Model<ReimbursementType>, @InjectModel(ReimbursementClaim.name) private readonly claimModel: Model<ReimbursementClaim>, @InjectModel(ReimbursementItem.name) private readonly itemModel: Model<ReimbursementItem>, @InjectModel(ReimbursementApproval.name) private readonly approvalModel: Model<ReimbursementApproval>, @InjectModel(ReimbursementSettlement.name) private readonly settlementModel: Model<ReimbursementSettlement>, ) {} async listTypes(tenantId: string) { return this.typeModel.find({ tenantId, isActive: true }).lean(); } async listClaims(tenantId: string, filters: Record<string, unknown> = {}) { return this.claimModel.find({ tenantId, ...filters }).lean(); } async createClaim( tenantId: string, data: Partial<ReimbursementClaim>, userId: string, ) { return this.claimModel.create({ ...data, tenantId, createdBy: new Types.ObjectId(userId), }); } async approveClaim( tenantId: string, claimId: string, userId: string, approvedAmount: number, ) { await this.approvalModel.create({ tenantId, claimId, approverId: new Types.ObjectId(userId), status: 'approved', }); return this.claimModel .findOneAndUpdate( { _id: claimId, tenantId }, { $set: { status: 'approved', approvedAmount, approvedBy: new Types.ObjectId(userId), }, }, { new: true }, ) .lean(); } } // ── 12. Payslip Service ── @Injectable() export class PayslipService { constructor( @InjectModel(Payslip.name) private readonly model: Model<Payslip>, @InjectModel(PayslipTemplate.name) private readonly templateModel: Model<PayslipTemplate>, @InjectModel(PayslipDeliveryLog.name) private readonly deliveryModel: Model<PayslipDeliveryLog>, @InjectModel(PayrollCalculationResult.name) private readonly resultModel: Model<PayrollCalculationResult>, @InjectModel(PayrollCalculationComponent.name) private readonly calcCompModel: Model<PayrollCalculationComponent>, ) {} async list(tenantId: string, filters: Record<string, unknown> = {}) { return this.model .find({ tenantId, ...filters }) .sort({ createdAt: -1 }) .lean(); } async getById(tenantId: string, id: string) { const payslip = await this.model.findOne({ _id: id, tenantId }).lean(); if (!payslip) throw new NotFoundException('Payslip not found'); return payslip; } async getByEmployeeAndPeriod( tenantId: string, employeeId: string, periodId: string, ) { return this.model.findOne({ tenantId, employeeId, periodId }).lean(); } async generateForRun(tenantId: string, runId: string) { const results = await this.resultModel.find({ tenantId, runId }).lean(); const payslips = []; for (const result of results) { const existing = await this.model.findOne({ tenantId, runId, employeeId: result.employeeId, }); if (existing) { await this.model.updateOne( { _id: existing._id }, { $inc: { version: 1 }, $set: { generatedAt: new Date(), status: 'generated' }, }, ); } else { payslips.push({ tenantId, runId, employeeId: result.employeeId, resultId: result._id, periodId: (result as Record<string, unknown>)['periodId'] ?? runId, generatedAt: new Date(), status: 'generated', }); } } if (payslips.length > 0) await this.model.insertMany(payslips); return { generated: payslips.length, updated: results.length - payslips.length, }; } async send(tenantId: string, payslipId: string) { const payslip = await this.model.findOne({ _id: payslipId, tenantId }); if (!payslip) throw new NotFoundException('Payslip not found'); await this.deliveryModel.create({ tenantId, payslipId, employeeId: payslip.employeeId, channel: 'email', status: 'sent', }); return this.model .findOneAndUpdate( { _id: payslipId }, { $set: { status: 'delivered', deliveredAt: new Date() } }, { new: true }, ) .lean(); } } // ── 13. Payment Service ── @Injectable() export class PayrollPaymentService { constructor( @InjectModel(PayrollPaymentBatch.name) private readonly batchModel: Model<PayrollPaymentBatch>, @InjectModel(PayrollPaymentInstruction.name) private readonly instructionModel: Model<PayrollPaymentInstruction>, @InjectModel(PayrollBankFile.name) private readonly bankFileModel: Model<PayrollBankFile>, @InjectModel(PayrollPaymentReconciliation.name) private readonly reconModel: Model<PayrollPaymentReconciliation>, ) {} async createBatch(tenantId: string, runId: string, userId: string) { return this.batchModel.create({ tenantId, runId, batchName: `Batch-${Date.now()}`, generatedBy: new Types.ObjectId(userId), }); } async getBatch(tenantId: string, batchId: string) { return this.batchModel.findOne({ _id: batchId, tenantId }).lean(); } async listInstructions(tenantId: string, batchId: string) { return this.instructionModel.find({ tenantId, batchId }).lean(); } } // ── 14. Accounting Service ── @Injectable() export class PayrollAccountingService { constructor( @InjectModel(PayrollAccountingMapping.name) private readonly mappingModel: Model<PayrollAccountingMapping>, @InjectModel(PayrollJournalExport.name) private readonly journalModel: Model<PayrollJournalExport>, @InjectModel(PayrollCostAllocation.name) private readonly allocationModel: Model<PayrollCostAllocation>, ) {} async getMappings(tenantId: string) { return this.mappingModel.find({ tenantId }).lean(); } async createMapping( tenantId: string, data: Partial<PayrollAccountingMapping>, ) { return this.mappingModel.create({ ...data, tenantId }); } async generateJournal(tenantId: string, runId: string, periodId: string) { return this.journalModel.create({ tenantId, runId, periodId, entries: [], status: 'generated', }); } } // ── 15. Full & Final Settlement Service ── @Injectable() export class FullAndFinalService { constructor( @InjectModel(FullAndFinalSettlement.name) private readonly model: Model<FullAndFinalSettlement>, @InjectModel(SettlementComponent.name) private readonly compModel: Model<SettlementComponent>, @InjectModel(SettlementRecovery.name) private readonly recoveryModel: Model<SettlementRecovery>, @InjectModel(SettlementApproval.name) private readonly approvalModel: Model<SettlementApproval>, ) {} async create( tenantId: string, employeeId: string, data: Partial<FullAndFinalSettlement>, userId: string, ) { return this.model.create({ ...data, tenantId, employeeId, createdBy: new Types.ObjectId(userId), }); } async calculate(tenantId: string, settlementId: string) { const earnings = await this.compModel .find({ tenantId, settlementId, type: 'earning' }) .lean(); const recoveries = await this.recoveryModel .find({ tenantId, settlementId }) .lean(); const totalEarnings = earnings.reduce((s, e) => s + e.amount, 0); const totalRecoveries = recoveries.reduce((s, r) => s + r.amount, 0); return this.model .findOneAndUpdate( { _id: settlementId, tenantId }, { $set: { totalEarnings, totalRecoveries, netSettlement: totalEarnings - totalRecoveries, status: 'calculated', }, }, { new: true }, ) .lean(); } async approve(tenantId: string, settlementId: string, userId: string) { await this.approvalModel.create({ tenantId, settlementId, approverId: new Types.ObjectId(userId), status: 'approved', }); return this.model .findOneAndUpdate( { _id: settlementId, tenantId }, { $set: { status: 'approved', approvedBy: new Types.ObjectId(userId) }, }, { new: true }, ) .lean(); } } // ── 16. Dashboard Service ── @Injectable() export class PayrollDashboardService { constructor( @InjectModel(PayrollRun.name) private readonly runModel: Model<PayrollRun>, @InjectModel(PayrollCalculationResult.name) private readonly resultModel: Model<PayrollCalculationResult>, @InjectModel(PayrollCalculationComponent.name) private readonly calcCompModel: Model<PayrollCalculationComponent>, @InjectModel(EmployeeLoan.name) private readonly loanModel: Model<EmployeeLoan>, @InjectModel(ReimbursementClaim.name) private readonly reimbModel: Model<ReimbursementClaim>, @InjectModel(PayrollRunException.name) private readonly exceptionModel: Model<PayrollRunException>, ) {} async getSummary(tenantId: string) { const latestRun = await this.runModel .findOne({ tenantId, status: { $in: ['completed', 'locked', 'approved'] }, }) .sort({ createdAt: -1 }) .lean(); if (!latestRun) return { hasData: false }; return { hasData: true, runId: latestRun._id, status: latestRun.status, totalEmployees: latestRun.totalEmployees, totalGross: latestRun.totalGross, totalDeductions: latestRun.totalDeductions, totalNetPay: latestRun.totalNetPay, totalEmployerCost: latestRun.totalEmployerCost, }; } async getPayrollCost(tenantId: string) { return this.runModel .find({ tenantId, status: { $in: ['completed', 'locked'] } }) .sort({ createdAt: -1 }) .limit(12) .select('runName totalGross totalNetPay totalEmployerCost createdAt') .lean(); } async getDepartmentCost(tenantId: string, runId: string) { return this.resultModel.aggregate([ { $match: { tenantId, runId } }, { $group: { _id: '$departmentId', totalGross: { $sum: '$grossEarnings' }, totalNet: { $sum: '$netPay' }, count: { $sum: 1 }, }, }, ]); } async getExceptions(tenantId: string, runId: string) { return this.exceptionModel.find({ tenantId, runId }).lean(); } async getLoanSummary(tenantId: string) { return this.loanModel.aggregate([ { $match: { tenantId, status: 'active' } }, { $group: { _id: null, totalOutstanding: { $sum: '$outstandingBalance' }, totalLoans: { $sum: 1 }, }, }, ]); } } // ── 17. Import/Export Service ── @Injectable() export class PayrollImportExportService { constructor( @InjectModel(PayrollImportJob.name) private readonly importModel: Model<PayrollImportJob>, @InjectModel(PayrollImportRow.name) private readonly importRowModel: Model<PayrollImportRow>, @InjectModel(PayrollExportJob.name) private readonly exportModel: Model<PayrollExportJob>, ) {} async createImportJob( tenantId: string, data: Partial<PayrollImportJob>, userId: string, ) { return this.importModel.create({ ...data, tenantId, createdBy: new Types.ObjectId(userId), }); } async getImportJob(tenantId: string, jobId: string) { return this.importModel.findOne({ _id: jobId, tenantId }).lean(); } async createExportJob( tenantId: string, data: Partial<PayrollExportJob>, userId: string, ) { return this.exportModel.create({ ...data, tenantId, createdBy: new Types.ObjectId(userId), }); } } |