Refactor to merge Match.Status and Match.Winner fields into one.

model/match.go

@@ -33,12 +33,20 @@ type Match struct {
 	Blue2IsSurrogate bool
 	Blue3            int
 	Blue3IsSurrogate bool
-	Status           string
 	StartedAt        time.Time
 	ScoreCommittedAt time.Time
-	Winner           string
+	Status           MatchStatus
 }
 
+type MatchStatus string
+
+const (
+	RedWonMatch    MatchStatus = "R"
+	BlueWonMatch   MatchStatus = "B"
+	TieMatch       MatchStatus = "T"
+	MatchNotPlayed MatchStatus = ""
+)
+
 var ElimRoundNames = map[int]string{1: "F", 2: "SF", 4: "QF", 8: "EF"}
 
 func (database *Database) CreateMatch(match *Match) error {
@@ -96,6 +104,10 @@ func (database *Database) GetMatchesByType(matchType string) ([]Match, error) {
 	return matches, err
 }
 
+func (match *Match) IsComplete() bool {
+	return match.Status != MatchNotPlayed
+}
+
 func (match *Match) CapitalizedType() string {
 	if match.Type == "" {
 		return ""