Add mysql support

internal/config/config.go

@@ -15,6 +15,13 @@ type config struct {
 	JwtSecret   string
 	JwtIssuer   string
 	JwtAudience string
+
+	DBEngine   string
+	DBHost     string
+	DBPort     string
+	DBUser     string
+	DBPassword string
+	DBName     string
 }
 
 var Config *config
@@ -58,6 +65,23 @@ func Load() *config {
 		audience = "CatsOfMastodonBotGo"
 	}
 
+
+	dbEngine := os.Getenv("CAOM_DB_ENGINE")
+	dbHost := os.Getenv("CAOM_DB_HOST")
+	dbPort := os.Getenv("CAOM_DB_PORT")
+	dbUser := os.Getenv("CAOM_DB_USER")
+	dbPassword := os.Getenv("CAOM_DB_PASSWORD")
+	dbName := os.Getenv("CAOM_DB_NAME")
+
+	if dbEngine == "" || dbHost == "" || dbPort == "" || dbUser == "" || dbPassword == "" || dbName == "" {
+		slog.Info("No database connection provided, using sqlite")
+		dbEngine = "sqlite"
+		dbHost = ""
+		dbPort = ""
+		dbUser = ""
+		dbPassword = ""
+		dbName = "caom.db"
+	}
 	// Inititlize AppContext
 	var appContext = &config{
 		AdminPassword: adminPassword,
@@ -67,6 +91,13 @@ func Load() *config {
 		JwtSecret:   secret,
 		JwtIssuer:   issuer,
 		JwtAudience: audience,
+
+		DBEngine:   dbEngine,
+		DBHost:     dbHost,
+		DBPort:     dbPort,
+		DBUser:     dbUser,
+		DBPassword: dbPassword,
+		DBName:     dbName,
 	}
 	return appContext