Bugfixes. Optimizations/refactor. Add redis for player-cache. Add docker files. Replace sqlite dep. Single-Calc for existing players. Game-Metrics in JSON.

internal/cache/cache.go

@@ -0,0 +1,55 @@
+package cache
+
+import (
+	"InfantrySkillCalculator/models"
+	"InfantrySkillCalculator/utils"
+	"context"
+	"errors"
+	"fmt"
+	"github.com/redis/go-redis/v9"
+)
+
+var ctx = context.Background()
+
+func GetValue(key string) (string, error) {
+	val, err := models.Cache.Get(ctx, key).Result()
+	if err != nil {
+		return "", err // cache miss or error
+	} else {
+		return val, nil // cache hit
+	}
+}
+
+func SetValue(key string, value interface{}) error {
+	return models.Cache.Set(ctx, key, value, utils.PlayerCacheLifetime).Err()
+}
+
+func SetScore(playerId uint, gameTag string, score float32) error {
+	key := GetPlayerCacheKey(playerId, gameTag)
+	return SetValue(key, score)
+}
+
+func GetScore(playerId uint, gameTag string) (float32, error) {
+	key := GetPlayerCacheKey(playerId, gameTag)
+	val, err := GetValue(key)
+	if errors.Is(err, redis.Nil) {
+		return -1.0, nil // cache miss
+	} else if err != nil {
+		return -1.0, err // cache error
+	} else {
+		return utils.StringToFloat(val), nil // cache hit
+	}
+}
+
+func DeleteScore(playerId uint, gameTag string) error {
+	key := GetPlayerCacheKey(playerId, gameTag)
+	return models.Cache.Del(ctx, key).Err()
+}
+
+func PurgeCache() error {
+	return models.Cache.FlushAll(ctx).Err()
+}
+
+func GetPlayerCacheKey(playerId uint, gameTag string) string {
+	return fmt.Sprintf("player:%d:game:%s", playerId, gameTag)
+}