update ignore

exemple/service.go

@@ -0,0 +1,61 @@
+package report
+
+import (
+	"context"
+	"service/pkg/errors"
+)
+
+type Service interface {
+	GenerateCrossDBReport(ctx context.Context) ([]CombinedReport, error)
+}
+
+type service struct {
+	repo Repository
+}
+
+func NewService(repo Repository) Service {
+	return &service{repo: repo}
+}
+
+func (s *service) GenerateCrossDBReport(ctx context.Context) ([]CombinedReport, error) {
+	// 1. Ambil data master karyawan dari PostgreSQL
+	employees, err := s.repo.GetEmployeesFromPostgres(ctx)
+	if err != nil {
+		return nil, errors.InternalError().Message("Failed to fetch employees from Postgres").Cause(err).Build()
+	}
+
+	if len(employees) == 0 {
+		return []CombinedReport{}, nil
+	}
+
+	// 2. Ekstrak ID karyawan untuk klausa IN (?) di MySQL
+	var empIDs []int64
+	for _, emp := range employees {
+		empIDs = append(empIDs, emp.ID)
+	}
+
+	// 3. Ambil data transaksi kehadiran dari MySQL menggunakan list ID di atas
+	attendances, err := s.repo.GetAttendancesFromMySQL(ctx, empIDs)
+	if err != nil {
+		return nil, errors.InternalError().Message("Failed to fetch attendances from MySQL").Cause(err).Build()
+	}
+
+	// 4. Proses In-Memory Join (Mapping)
+	// Kelompokkan attendance berdasarkan EmployeeID agar pencarian cepat O(1)
+	attendanceMap := make(map[int64][]Attendance)
+	for _, att := range attendances {
+		attendanceMap[att.EmployeeID] = append(attendanceMap[att.EmployeeID], att)
+	}
+
+	// Gabungkan data
+	var reports []CombinedReport
+	for _, emp := range employees {
+		reports = append(reports, CombinedReport{
+			EmployeeName: emp.Name,
+			Department:   emp.Department,
+			Attendances:  attendanceMap[emp.ID], // Ambil relasinya dari memory map
+		})
+	}
+
+	return reports, nil
+}