change fake db package name to make way for db being split out

db/fake_db.go

@@ -1,73 +0,0 @@
-package db
-
-import (
-	"encoding/json"
-	"fmt"
-	"io"
-	"os"
-)
-
-func ExecDB(db_name string) map[string]interface{} {
-	var result map[string]interface{}
-
-	if db_name == "users" {
-		users_db, err := os.Open("./test_data/users.json")
-		if err != nil {
-			fmt.Println(err)
-			return nil
-		}
-		fmt.Println("Successfully opened Users DB")
-		defer users_db.Close()
-
-		byteValue, _ := io.ReadAll(users_db)
-		var users []interface{}
-		json.Unmarshal(byteValue, &users)
-		result = map[string]interface{}{"users": users}
-
-	} else if db_name == "messages" {
-		messages_db, err := os.Open("./test_data/messages.json")
-		if err != nil {
-			fmt.Println(err)
-			return nil
-		}
-		fmt.Println("Successfully opened Messages DB")
-		defer messages_db.Close()
-
-		byteValue, _ := io.ReadAll(messages_db)
-		var messages []interface{}
-		json.Unmarshal(byteValue, &messages)
-		result = map[string]interface{}{"messages": messages}
-
-	} else {
-		fmt.Println("Invalid DB name")
-		return nil
-	}
-
-	return result
-}
-
-func WriteDB(db_name string, data interface{}) error {
-	var filePath string
-
-	switch db_name {
-	case "users":
-		filePath = "./test_data/users.json"
-	case "messages":
-		filePath = "./test_data/messages.json"
-	default:
-		return fmt.Errorf("invalid database name: %s", db_name)
-	}
-
-	jsonData, err := json.MarshalIndent(data, "", "  ")
-	if err != nil {
-		return fmt.Errorf("error marshaling data to JSON: %v", err)
-	}
-
-	err = os.WriteFile(filePath, jsonData, 0644)
-	if err != nil {
-		return fmt.Errorf("error writing to file: %v", err)
-	}
-
-	fmt.Printf("Successfully wrote to %s DB\n", db_name)
-	return nil
-}