feat: implement retrieve one facility by id

go.mod

@@ -26,6 +26,7 @@ require (
 	github.com/savannahghi/profileutils v0.0.17
 	github.com/savannahghi/scalarutils v0.0.4
 	github.com/savannahghi/serverutils v0.0.6
+	github.com/segmentio/ksuid v1.0.4
 	github.com/sirupsen/logrus v1.8.1
 	github.com/tj/assert v0.0.3
 	github.com/vektah/gqlparser/v2 v2.1.0

pkg/onboarding/infrastructure/database/postgres/gorm/mock/gorm_mock.go

@@ -10,9 +10,9 @@ import (
 //
 // This mock struct should be separate from our own internal methods.
 type GormMock struct {
-	CreateFacilityFn func(ctx context.Context, facility *gorm.Facility) (*gorm.Facility, error)
-	RetrieveFn       func(id *int64) (*gorm.Facility, error)
-	GetFacilitiesFn  func(ctx context.Context) ([]gorm.Facility, error)
+	CreateFacilityFn   func(ctx context.Context, facility *gorm.Facility) (*gorm.Facility, error)
+	RetrieveFacilityFn func(ctx context.Context, id *int64) (*gorm.Facility, error)
+	GetFacilitiesFn    func(ctx context.Context) ([]gorm.Facility, error)
 }
 
 // NewGormMock initializes a new instance of `GormMock` then mocking the case of success.
@@ -34,7 +34,7 @@ func NewGormMock() *GormMock {
 			}, nil
 		},
 
-		RetrieveFn: func(id *int64) (*gorm.Facility, error) {
+		RetrieveFacilityFn: func(ctx context.Context, id *int64) (*gorm.Facility, error) {
 			facilityID := int64(1)
 			name := "Kanairo One"
 			code := "KN001"
@@ -74,9 +74,9 @@ func (gm *GormMock) CreateFacility(ctx context.Context, facility *gorm.Facility)
 	return gm.CreateFacilityFn(ctx, facility)
 }
 
-// Retrieve mocks the implementation of `gorm's` Retrieve method.
-func (gm *GormMock) Retrieve(id *int64) (*gorm.Facility, error) {
-	return gm.RetrieveFn(id)
+// RetrieveFacility mocks the implementation of `gorm's` RetrieveFacility method.
+func (gm *GormMock) RetrieveFacility(ctx context.Context, id *int64) (*gorm.Facility, error) {
+	return gm.RetrieveFacilityFn(ctx, id)
 }
 
 // GetFacilities mocks the implementation of `gorm's` GetFacilities method.

pkg/onboarding/infrastructure/database/postgres/gorm/query.go

@@ -8,12 +8,12 @@ import (
 
 // Query contains all the db query methods
 type Query interface {
-	Retrieve(id *int64) (*Facility, error)
+	RetrieveFacility(ctx context.Context, id *int64) (*Facility, error)
 	GetFacilities(ctx context.Context) ([]Facility, error)
 }
 
-// Retrieve fetches a single facility
-func (db *PGInstance) Retrieve(id *int64) (*Facility, error) {
+// RetrieveFacility fetches a single facility
+func (db *PGInstance) RetrieveFacility(ctx context.Context, id *int64) (*Facility, error) {
 	var facility Facility
 	if err := db.DB.Where(&Facility{FacilityID: id}).First(&facility).Error; err != nil {
 		return nil, fmt.Errorf("failed to get facility by ID %v: %v", id, err)

pkg/onboarding/infrastructure/database/postgres/mock/pg_mock.go

@@ -9,8 +9,9 @@ import (
 
 // PostgresMock struct implements mocks of `postgres's` internal methods.
 type PostgresMock struct {
-	CreateFacilityFn func(ctx context.Context, facility *dto.FacilityInput) (*domain.Facility, error)
-	GetFacilitiesFn  func(ctx context.Context) ([]*domain.Facility, error)
+	CreateFacilityFn   func(ctx context.Context, facility *dto.FacilityInput) (*domain.Facility, error)
+	GetFacilitiesFn    func(ctx context.Context) ([]*domain.Facility, error)
+	RetrieveFacilityFn func(ctx context.Context, id *int64) (*domain.Facility, error)
 }
 
 // NewPostgresMock initializes a new instance of `GormMock` then mocking the case of success.
@@ -48,10 +49,30 @@ func NewPostgresMock() *PostgresMock {
 				},
 			}, nil
 		},
+		RetrieveFacilityFn: func(ctx context.Context, id *int64) (*domain.Facility, error) {
+			facilityID := int64(1)
+			name := "test-facility"
+			code := "t-100"
+			county := "test-county"
+			description := "test description"
+			return &domain.Facility{
+				ID:          facilityID,
+				Name:        name,
+				Code:        code,
+				Active:      true,
+				County:      county,
+				Description: description,
+			}, nil
+		},
 	}
 }
 
 // CreateFacility mocks the implementation of `gorm's` CreateFacility method.
 func (gm *PostgresMock) CreateFacility(ctx context.Context, facility *dto.FacilityInput) (*domain.Facility, error) {
 	return gm.CreateFacilityFn(ctx, facility)
 }
+
+// RetrieveFacility mocks the implementation of `gorm's` CreateFacility method.
+func (gm *PostgresMock) RetrieveFacility(ctx context.Context, id *int64) (*domain.Facility, error) {
+	return gm.RetrieveFacilityFn(ctx, id)
+}

pkg/onboarding/infrastructure/database/postgres/pg_query.go

@@ -33,3 +33,16 @@ func (d *OnboardingDb) GetFacilities(ctx context.Context) ([]*domain.Facility, e
 
 	return facility, nil
 }
+
+// RetrieveFacility gets a facility by ID from the database
+func (d *OnboardingDb) RetrieveFacility(ctx context.Context, id *int64) (*domain.Facility, error) {
+	if id == nil {
+		return nil, fmt.Errorf("facility ID should be defined")
+	}
+	facilitySession, err := d.query.RetrieveFacility(ctx, id)
+	if err != nil {
+		return nil, fmt.Errorf("failed query and retrieve one facility: %s", err)
+	}
+
+	return d.mapFacilityObjectToDomain(facilitySession), nil
+}

pkg/onboarding/infrastructure/database/postgres/pg_retrieve_test.go

@@ -0,0 +1,116 @@
+package postgres
+
+import (
+	"context"
+	"fmt"
+	"testing"
+
+	"github.com/savannahghi/onboarding-service/pkg/onboarding/application/dto"
+	"github.com/savannahghi/onboarding-service/pkg/onboarding/domain"
+	"github.com/savannahghi/onboarding-service/pkg/onboarding/infrastructure/database/postgres/gorm"
+	gormMock "github.com/savannahghi/onboarding-service/pkg/onboarding/infrastructure/database/postgres/gorm/mock"
+)
+
+func TestOnboardingDb_RetrieveFacility(t *testing.T) {
+	ctx := context.Background()
+
+	var fakeGorm = gormMock.NewGormMock()
+	d := NewOnboardingDb(fakeGorm, fakeGorm)
+
+	facilityInput := &dto.FacilityInput{
+		Name:        "Kanairo One",
+		Code:        "KN001",
+		County:      "Kanairo",
+		Description: "This is just for mocking",
+	}
+
+	// Setup, create a facility
+	facility, err := d.CreateFacility(ctx, facilityInput)
+	if err != nil {
+		t.Errorf("failed to create new facility: %v", err)
+	}
+
+	id := facility.ID
+
+	invalidID := int64(-100)
+
+	type args struct {
+		ctx context.Context
+		id  *int64
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    *domain.Facility
+		wantErr bool
+	}{
+		{
+			name: "happy case - valid ID passed",
+			args: args{
+				ctx: ctx,
+				id:  &id,
+			},
+			wantErr: false,
+		},
+		{
+			name: "sad case - no ID passed",
+			args: args{
+				ctx: ctx,
+			},
+			wantErr: true,
+		},
+		{
+			name: "sad case - invalid ID",
+			args: args{
+				ctx: ctx,
+				id:  &invalidID,
+			},
+			wantErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+
+			got, err := d.RetrieveFacility(ctx, tt.args.id)
+
+			if tt.name == "happy case - valid ID passed" {
+				fakeGorm.RetrieveFacilityFn = func(ctx context.Context, id *int64) (*gorm.Facility, error) {
+					return &gorm.Facility{
+						FacilityID:  &facility.ID,
+						Name:        facility.Name,
+						Code:        facility.Code,
+						Active:      facility.Active,
+						County:      facility.County,
+						Description: facility.Description,
+					}, nil
+				}
+			}
+
+			if tt.name == "sad case - no ID passed" {
+				fakeGorm.RetrieveFacilityFn = func(ctx context.Context, id *int64) (*gorm.Facility, error) {
+					return nil, fmt.Errorf("failed to create facility")
+				}
+			}
+
+			if tt.name == "sad case - invalid ID" {
+				fakeGorm.RetrieveFacilityFn = func(ctx context.Context, id *int64) (*gorm.Facility, error) {
+					return nil, fmt.Errorf("failed to create facility")
+				}
+			}
+
+			if (err != nil) != tt.wantErr {
+				t.Errorf("OnboardingDb.RetrieveFacility() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if tt.wantErr && got != nil {
+				t.Errorf("expected facility to be nil for %v", tt.name)
+				return
+			}
+
+			if !tt.wantErr && got == nil {
+				t.Errorf("expected facility not to be nil for %v", tt.name)
+				return
+			}
+		})
+	}
+}

pkg/onboarding/infrastructure/repository.go

@@ -32,25 +32,29 @@ func (f ServiceCreateImpl) CreateFacility(ctx context.Context, facility dto.Faci
 	return f.onboarding.CreateFacility(ctx, &facility)
 }
 
-// Query represents a contract that contains all `get` ops to the database
-//
-// All the  contracts for get operations are assembled here
+// Query contains all query methods
 type Query interface {
+	RetrieveFacility(ctx context.Context, id *int64) (*domain.Facility, error)
 	GetFacilities(ctx context.Context) ([]*domain.Facility, error)
 }
 
-// ServiceQueryImpl represents create contract implementation object
+// ServiceQueryImpl contains implementation for the Query interface
 type ServiceQueryImpl struct {
 	onboarding pg.OnboardingDb
 }
 
-// NewServiceQueryImpl returns new instance of ServiceQueryImpl
-func NewServiceQueryImpl(on pg.OnboardingDb) Query {
+// NewServiceQueryImpl is the initializer for Service query
+func NewServiceQueryImpl(on pg.OnboardingDb) *ServiceQueryImpl {
 	return &ServiceQueryImpl{
 		onboarding: on,
 	}
 }
 
+// RetrieveFacility  is a repository implementation method for RetrieveFacility
+func (q ServiceQueryImpl) RetrieveFacility(ctx context.Context, id *int64) (*domain.Facility, error) {
+	return q.onboarding.RetrieveFacility(ctx, id)
+}
+
 //GetFacilities is responsible for returning a slice of healthcare facilities in the platform.
 func (q ServiceQueryImpl) GetFacilities(ctx context.Context) ([]*domain.Facility, error) {
 	return q.onboarding.GetFacilities(ctx)

pkg/onboarding/presentation/graph/facility.graphql

@@ -5,4 +5,5 @@ extend type Mutation {
 
 extend type Query {
    fetchFacilities: [Facility]
+   RetrieveFacility(id: Int!): Facility!
 }

pkg/onboarding/presentation/graph/facility.resolvers.go

@@ -19,6 +19,11 @@ func (r *queryResolver) FetchFacilities(ctx context.Context) ([]*domain.Facility
 	return r.interactor.FacilityUsecase.FetchFacilities(ctx)
 }
 
+func (r *queryResolver) RetrieveFacility(ctx context.Context, id int) (*domain.Facility, error) {
+	intID := int64(id)
+	return r.interactor.FacilityUsecase.RetrieveFacility(ctx, &intID)
+}
+
 // Mutation returns generated.MutationResolver implementation.
 func (r *Resolver) Mutation() generated.MutationResolver { return &mutationResolver{r} }