⚡️ Added Delete session function

cmd/api/auth/login.go

@@ -10,10 +10,12 @@ import (
 	"ahbcc/internal/log"
 )
 
-// LogIn logs the user in
+// LogIn logs the user in. It first verifies if the user exists in the database and then compares its password hash with
+// a hashed version of the password given throw parameter, if they match, the user is allowed to log in.
+// Lastly, it creates the user session and returns it with its expiration time.
 type LogIn func(ctx context.Context, user user.DTO) (string, time.Time, error)
 
-// MakeLogIn creates a new LogIn function
+// MakeLogIn creates a new LogIn
 func MakeLogIn(selectUserByUsername user.SelectByUsername, createSessionToken session.CreateToken) LogIn {
 	return func(ctx context.Context, user user.DTO) (string, time.Time, error) {
 		userDAO, err := selectUserByUsername(ctx, user.Username)

cmd/api/user/session/delete.go

@@ -0,0 +1,29 @@
+package session
+
+import (
+	"context"
+
+	"ahbcc/internal/database"
+	"ahbcc/internal/log"
+)
+
+// Delete deletes a session
+type Delete func(ctx context.Context, token string) error
+
+// MakeDelete creates a new Delete
+func MakeDelete(db database.Connection) Delete {
+	const query string = `
+		DELETE FROM users_sessions
+		WHERE token = $1
+	`
+
+	return func(ctx context.Context, token string) error {
+		_, err := db.Exec(ctx, query, token)
+		if err != nil {
+			log.Error(ctx, err.Error())
+			return FailedToDeleteUserSession
+		}
+
+		return nil
+	}
+}

cmd/api/user/session/delete_test.go

@@ -0,0 +1,39 @@
+package session_test
+
+import (
+	"context"
+	"errors"
+	"testing"
+
+	"github.com/jackc/pgx/v5/pgconn"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+
+	"ahbcc/cmd/api/user/session"
+	"ahbcc/internal/database"
+)
+
+func TestDelete_success(t *testing.T) {
+	mockPostgresConnection := new(database.MockPostgresConnection)
+	mockPostgresConnection.On("Exec", mock.Anything, mock.Anything, mock.Anything).Return(pgconn.CommandTag{}, nil)
+
+	deleteSession := session.MakeDelete(mockPostgresConnection)
+
+	got := deleteSession(context.Background(), "token")
+
+	assert.Nil(t, got)
+	mockPostgresConnection.AssertExpectations(t)
+}
+
+func TestDelete_failsWhenDeleteOperationThrowsError(t *testing.T) {
+	mockPostgresConnection := new(database.MockPostgresConnection)
+	mockPostgresConnection.On("Exec", mock.Anything, mock.Anything, mock.Anything).Return(pgconn.CommandTag{}, errors.New("failed to delete user session"))
+
+	deleteSession := session.MakeDelete(mockPostgresConnection)
+
+	want := session.FailedToDeleteUserSession
+	got := deleteSession(context.Background(), "token")
+
+	assert.Equal(t, want, got)
+	mockPostgresConnection.AssertExpectations(t)
+}

cmd/api/user/session/errors.go

@@ -5,4 +5,5 @@ import "errors"
 var (
 	FailedToInsertUserSession     = errors.New("failed to insert user session")
 	FailedToCreatUserSessionToken = errors.New("failed to create user session token")
+	FailedToDeleteUserSession     = errors.New("failed to delete user session")
 )