Add game list

common/game_list.go

@@ -0,0 +1,106 @@
+package common
+
+import (
+	"encoding/csv"
+	"os"
+	"strconv"
+	"sync"
+)
+
+type GameInfo struct {
+	GameID      int
+	Name        string
+	SecretKey   string
+	Description string
+}
+
+var (
+	gameListReady      = false
+	gameList           = []GameInfo{}
+	gameListIDLookup   = map[int]int{}
+	gameListNameLookup = map[string]int{}
+	mutex              = sync.RWMutex{}
+)
+
+func GetGameList() []GameInfo {
+	if !gameListReady {
+		ReadGameList()
+	}
+
+	return gameList
+}
+
+func GetGameInfoByID(gameId int) (GameInfo, bool) {
+	if !gameListReady {
+		ReadGameList()
+	}
+
+	if index, ok := gameListIDLookup[gameId]; ok && index < len(gameList) {
+		return gameList[index], true
+	}
+
+	return GameInfo{}, false
+}
+
+func GetGameInfoByName(name string) (GameInfo, bool) {
+	if !gameListReady {
+		ReadGameList()
+	}
+
+	if index, ok := gameListNameLookup[name]; ok && index < len(gameList) {
+		return gameList[index], true
+	}
+
+	return GameInfo{}, false
+}
+
+func ReadGameList() {
+	mutex.Lock()
+	defer mutex.Unlock()
+
+	if gameListReady {
+		return
+	}
+
+	file, err := os.Open("game_list.tsv")
+	if err != nil {
+		panic(err)
+	}
+
+	reader := csv.NewReader(file)
+	reader.Comma = '\t'
+	csvList, err := reader.ReadAll()
+	if err != nil {
+		panic(err)
+	}
+
+	gameList = []GameInfo{}
+	gameListIDLookup = map[int]int{}
+	gameListNameLookup = map[string]int{}
+
+	for index, entry := range csvList {
+		gameId := -1
+
+		if entry[2] != "" {
+			gameId, err = strconv.Atoi(entry[2])
+			if err != nil {
+				panic(err)
+			}
+		}
+
+		gameList = append(gameList, GameInfo{
+			GameID:      gameId,
+			Name:        entry[1],
+			SecretKey:   entry[3],
+			Description: entry[0],
+		})
+
+		// Create lookup tables
+		if gameId != -1 {
+			gameListIDLookup[gameId] = index
+		}
+		gameListNameLookup[entry[1]] = index
+	}
+
+	gameListReady = true
+}