Implement loadUniquePlayers function to retrieve and store unique player names from the database

main.go

@@ -24,9 +24,6 @@ const nsqEndpoint = "https://nsq.site.quack-lab.dev/pub?topic=wowspy"
 var debug *bool
 var nsqWorkers = 32
 
-var allPlayersAchievementsGlobal = make(map[string][]NSQMessage) // PlayerName -> list of all their achievements
-var allPlayerNamesGlobal = make(map[string]bool)                 // Set of all player names
-
 func main() {
 	root := flag.String("root", ".", "Root workdir")
 	debug = flag.Bool("d", false, "Debug")
@@ -80,10 +77,31 @@ func main() {
 		defer wg.Done()
 		saveAchievementsToDB(&db, achievements)
 	}()
+	loadUniquePlayers(&db, achievements)
 	saveAchievementsToSourceFiles(luaStates, achievements)
 	wg.Wait()
 }
 
+// loadUniquePlayers loads all unique players from the database and stores them in the achievements map
+// So that we can populate our "alreadySeen" with the database values too
+func loadUniquePlayers(db *DB, achievements *sync.Map) {
+	rows, err := db.readConn.Query("SELECT DISTINCT name FROM achievements")
+	if err != nil {
+		logger.Error("error querying unique players: %v", err)
+		return
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var playerName string
+		err = rows.Scan(&playerName)
+		if err != nil {
+			logger.Error("error scanning player name: %v", err)
+		}
+		achievements.Store(playerName, &[]NSQMessage{})
+	}
+	return
+}
+
 func saveAchievementsToSourceFiles(luaStates *sync.Map, achievements *sync.Map) {
 	wg := sync.WaitGroup{}
 	luaStates.Range(func(k, v any) bool {