migrations; game counter; next step by order game count

db.go

@@ -6,6 +6,10 @@ import (
 	_ "github.com/mattn/go-sqlite3"
 )
 
+var migrations = []string{
+	"ALTER TABLE Games ADD count INT DEFAULT 0;",
+}
+
 func connectDB() (*sql.DB, error) {
 	db, err := sql.Open("sqlite3", "./game.db")
 	if err != nil {
@@ -31,12 +35,37 @@ func checkPreinstall(db *sql.DB) error {
         INSERT OR IGNORE INTO Stats (name, count) VALUES ('ai_won', 0);
         INSERT OR IGNORE INTO Stats (name, count) VALUES ('draw', 0);
         INSERT OR IGNORE INTO Stats (name, comment) VALUES ('last_ai_lost', NULL);
+        INSERT OR IGNORE INTO Stats (name, count) VALUES ('last_migration', 0);
 	`
 	_, err := db.Exec(sqlStmt)
 	if err != nil {
 		return err
 	}
 
+	err = runMigrations(db)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func runMigrations(db *sql.DB) error {
+	lastMigration, err := getStatsCounter(db, "last_migration")
+	if err != nil {
+		return err
+	}
+
+	for i := lastMigration; i < len(migrations); i++ {
+		sqlStmt := migrations[i]
+		_, err := db.Exec(sqlStmt)
+		if err != nil {
+			return err
+		}
+
+		db.Exec("UPDATE Stats SET count=count+1 WHERE name='last_migration';")
+	}
+
 	return nil
 }
 
@@ -80,6 +109,11 @@ func saveGameLog(db *sql.DB, game *Game) {
 			game.gameFlow,
 			game.isFirstWon(),
 		)
+		db.Exec(
+			"UPDATE Games SET count=count+1 WHERE game_flow=? AND first_won=?;",
+			game.gameFlow,
+			game.isFirstWon(),
+		)
 
 		if game.isAiWon() {
 			db.Exec("UPDATE Stats SET count=count+1 WHERE name='ai_won';")
@@ -92,7 +126,9 @@ func saveGameLog(db *sql.DB, game *Game) {
 }
 
 func getWinnerNextStep(db *sql.DB, game *Game) string {
-	stmt, err := db.Prepare("SELECT game_flow FROM Games WHERE game_flow LIKE ? AND first_won = ?")
+	stmt, err := db.Prepare(
+		"SELECT game_flow FROM Games WHERE game_flow LIKE ? AND first_won = ? ORDER BY count DESC",
+	)
 	if err != nil {
 		return ""
 	}