Refactored the code to switch between postgres and gdbm, with db cleanup

internal/testutil/engine.go

@@ -3,6 +3,8 @@ package testutil
 import (
 	"context"
 	"fmt"
+	"log"
+	"net/url"
 	"os"
 	"path"
 	"path/filepath"
@@ -11,34 +13,90 @@ import (
 	"git.defalsify.org/vise.git/engine"
 	"git.defalsify.org/vise.git/logging"
 	"git.defalsify.org/vise.git/resource"
+	"git.grassecon.net/urdt/ussd/config"
 	"git.grassecon.net/urdt/ussd/initializers"
 	"git.grassecon.net/urdt/ussd/internal/handlers"
 	"git.grassecon.net/urdt/ussd/internal/storage"
 	"git.grassecon.net/urdt/ussd/internal/testutil/testservice"
 	"git.grassecon.net/urdt/ussd/internal/testutil/testtag"
 	"git.grassecon.net/urdt/ussd/remote"
+	"github.com/jackc/pgx/v5/pgxpool"
 	testdataloader "github.com/peteole/testdata-loader"
 )
 
 var (
-	logg             = logging.NewVanilla()
-	baseDir   = testdataloader.GetBasePath()
-	scriptDir        = path.Join(baseDir, "services", "registration")
-	selectedDatabase = ""
-	selectedDbSchema = ""
+	logg        = logging.NewVanilla()
+	baseDir     = testdataloader.GetBasePath()
+	scriptDir   = path.Join(baseDir, "services", "registration")
+	setDbType   string
+	setConnStr  string
+	setDbSchema string
 )
 
 func init() {
 	initializers.LoadEnvVariablesPath(baseDir)
+	config.LoadConfig()
 }
 
 // SetDatabase updates the database used by TestEngine
-func SetDatabase(dbType string, dbSchema string) {
-	selectedDatabase = dbType
-	selectedDbSchema = dbSchema
+func SetDatabase(database, connStr, dbSchema string) {
+	setDbType = database
+	setConnStr = connStr
+	setDbSchema = dbSchema
+}
+
+// CleanDatabase removes all test data from the database
+func CleanDatabase() {
+	if setDbType == "postgres" {
+		ctx := context.Background()
+		// Update the connection string with the new search path
+		updatedConnStr, err := updateSearchPath(setConnStr, setDbSchema)
+		if err != nil {
+			log.Fatalf("Failed to update search path: %v", err)
+		}
+
+		dbConn, err := pgxpool.New(ctx, updatedConnStr)
+		if err != nil {
+			log.Fatalf("Failed to connect to database for cleanup: %v", err)
+		}
+		defer dbConn.Close()
+
+		query := fmt.Sprintf("DELETE FROM %s.kv_vise;", setDbSchema)
+		_, execErr := dbConn.Exec(ctx, query)
+		if execErr != nil {
+			log.Printf("Failed to cleanup table %s.kv_vise: %v", setDbSchema, execErr)
+		} else {
+			log.Printf("Successfully cleaned up table %s.kv_vise", setDbSchema)
+		}
+	} else {
+		setConnStr, _ := filepath.Abs(setConnStr)
+		if err := os.RemoveAll(setConnStr); err != nil {
+			log.Fatalf("Failed to delete state store %s: %v", setConnStr, err)
+		}
+	}
+}
+
+// updateSearchPath updates the search_path (schema) to be used in the connection
+func updateSearchPath(connStr string, newSearchPath string) (string, error) {
+	u, err := url.Parse(connStr)
+	if err != nil {
+		return "", fmt.Errorf("invalid connection string: %w", err)
+	}
+
+	// Parse the query parameters
+	q := u.Query()
+
+	// Update or add the search_path parameter
+	q.Set("search_path", newSearchPath)
+
+	// Rebuild the connection string with updated parameters
+	u.RawQuery = q.Encode()
+
+	return u.String(), nil
 }
 
 func TestEngine(sessionId string) (engine.Engine, func(), chan bool) {
+	var err error
 	ctx := context.Background()
 	ctx = context.WithValue(ctx, "SessionId", sessionId)
 	pfp := path.Join(scriptDir, "pp.csv")
@@ -52,16 +110,27 @@ func TestEngine(sessionId string) (engine.Engine, func(), chan bool) {
 		FlagCount:  uint32(128),
 	}
 
-	connStr, err := filepath.Abs(".test_state/state.gdbm")
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "connstr err: %v", err)
-		os.Exit(1)
+	if setDbType == "postgres" {
+		setConnStr = config.DbConn
+		setConnStr, err = updateSearchPath(setConnStr, setDbSchema)
+		if err != nil {
+			fmt.Println("Error:", err)
+			os.Exit(1)
+		}
+	} else {
+		setConnStr, err = filepath.Abs(setConnStr)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "connstr err: %v", err)
+			os.Exit(1)
+		}
 	}
-	conn, err := storage.ToConnData(connStr)
+
+	conn, err := storage.ToConnData(setConnStr)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "connstr parse err: %v", err)
 		os.Exit(1)
 	}
+
 	resourceDir := scriptDir
 	menuStorageService := storage.NewMenuStorageService(conn, resourceDir)