Add Company Tender Approval Statistics Endpoint and Update API Documentation

- Introduced a new API endpoint to retrieve company-specific tender approval statistics, enhancing the analytics capabilities of the tender management system.
- Implemented the `GetCompanyTenderApprovalStats` method in the service layer to fetch detailed statistics, including total approvals, approved and rejected tenders, and submission counts.
- Updated Swagger documentation to accurately reflect the new endpoint, including detailed descriptions, parameters, and response formats for the `CompanyTenderApprovalStatsResponse`.
- Enhanced the router to include the new statistics route, ensuring adherence to Clean Architecture principles and maintaining a clear separation of concerns in the handler layer.
- Added necessary request and response forms to support the new functionality, improving the overall API structure and usability.

internal/tender_approval/repository.go

@@ -29,6 +29,7 @@ type Repository interface {
 	CountByTenderID(ctx context.Context, tenderID string) (int64, error)
 	CountByCompanyID(ctx context.Context, companyID string) (int64, error)
 	GetTenderApprovalStats(ctx context.Context) (*TenderApprovalStatsResponse, error)
+	GetCompanyTenderApprovalStats(ctx context.Context, companyID string) (*CompanyTenderApprovalStatsResponse, error)
 	SearchByCriteria(ctx context.Context, criteria *TenderApprovalSearchCriteria) ([]*TenderApproval, error)
 }
 
@@ -501,6 +502,48 @@ func (r *tenderApprovalRepository) GetTenderApprovalStats(ctx context.Context) (
 	return stats, nil
 }
 
+// GetCompanyTenderApprovalStats returns company-specific tender approval statistics
+func (r *tenderApprovalRepository) GetCompanyTenderApprovalStats(ctx context.Context, companyID string) (*CompanyTenderApprovalStatsResponse, error) {
+	// Get company-specific counts
+	totalApprovals, _ := r.CountByCompanyID(ctx, companyID)
+
+	// Count by status for this company
+	approvedFilter := bson.M{"company_id": companyID, "status": string(ApprovalStatusApproved)}
+	approvedTenders, _ := r.ormRepo.Count(ctx, approvedFilter)
+
+	rejectedFilter := bson.M{"company_id": companyID, "status": string(ApprovalStatusRejected)}
+	rejectedTenders, _ := r.ormRepo.Count(ctx, rejectedFilter)
+
+	// Count by submission mode for this company
+	selfApplyFilter := bson.M{"company_id": companyID, "submission_mode": string(SubmissionModeSelfApply)}
+	selfApplyCount, _ := r.ormRepo.Count(ctx, selfApplyFilter)
+
+	partnershipFilter := bson.M{"company_id": companyID, "submission_mode": string(SubmissionModePartnership)}
+	partnershipCount, _ := r.ormRepo.Count(ctx, partnershipFilter)
+
+	stats := &CompanyTenderApprovalStatsResponse{
+		CompanyID:             companyID,
+		TotalApprovals:        totalApprovals,
+		ApprovedTenders:       approvedTenders,
+		RejectedTenders:       rejectedTenders,
+		SelfApplyCount:        selfApplyCount,
+		PartnershipCount:      partnershipCount,
+		ApprovalsByStatus:     make(map[string]int64),
+		ApprovalsBySubmission: make(map[string]int64),
+		LastUpdated:           time.Now().Unix(),
+	}
+
+	// Add status breakdown
+	stats.ApprovalsByStatus["approved"] = approvedTenders
+	stats.ApprovalsByStatus["rejected"] = rejectedTenders
+
+	// Add submission mode breakdown
+	stats.ApprovalsBySubmission["self-apply"] = selfApplyCount
+	stats.ApprovalsBySubmission["partnership"] = partnershipCount
+
+	return stats, nil
+}
+
 // SearchByCriteria searches tender approvals using search criteria
 func (r *tenderApprovalRepository) SearchByCriteria(ctx context.Context, criteria *TenderApprovalSearchCriteria) ([]*TenderApproval, error) {
 	// Convert criteria to search parameters