feat: add get a game service and fake database

handlers/game_handler.go

@@ -1,13 +1,50 @@
 package handlers
 
-import "github.com/gin-gonic/gin"
+import (
+	"github.com/gin-gonic/gin"
+	"hamster-tycoon/storage/dao"
+	"hamster-tycoon/storage/model"
+	"hamster-tycoon/storage/validators"
+	"hamster-tycoon/utils"
+	"net/http"
+)
 
 func (hc *handlersContext) getAllGames(c *gin.Context) {
 
 }
 
 func (hc *handlersContext) getAGame(c *gin.Context) {
+	gameId := c.Param("gameId")
 
+	err := hc.validator.VarCtx(c, gameId, "uuid4")
+	if err != nil {
+		utils.JSONError(c.Writer, validators.NewDataValidationAPIError(err))
+		return
+	}
+
+	game, err := hc.gameService.GetAGameById(gameId)
+	if e, ok := err.(*dao.DAOError); ok {
+		switch {
+		case e.Type == dao.ErrTypeNotFound:
+			utils.JSONErrorWithMessage(c.Writer, model.ErrNotFound, "Game not found")
+			return
+		default:
+			utils.GetLoggerFromCtx(c).WithError(err).WithField("type", e.Type).Error("error GetGame: get game error type not handled")
+			utils.JSONError(c.Writer, model.ErrInternalServer)
+			return
+		}
+	} else if err != nil {
+		utils.GetLoggerFromCtx(c).WithError(err).Error("error while get game")
+		utils.JSONError(c.Writer, model.ErrInternalServer)
+		return
+	}
+
+	if game == nil {
+		utils.JSONErrorWithMessage(c.Writer, model.ErrNotFound, "Game not found")
+		return
+	}
+
+	utils.JSON(c.Writer, http.StatusOK, game)
 }
 
 func (hc *handlersContext) createAGame(c *gin.Context) {

handlers/handler.go

@@ -27,9 +27,12 @@ type Config struct {
 }
 
 type handlersContext struct {
-	db          dao.Database
-	validator   *validator.Validate
-	userService *service.UserService
+	db             dao.Database
+	validator      *validator.Validate
+	userService    *service.UserService
+	gameService    *service.GameService
+	cageService    *service.CageService
+	hamsterService *service.HamsterService
 }
 
 func NewRouter(config *Config) *gin.Engine {
@@ -58,6 +61,10 @@ func NewRouter(config *Config) *gin.Engine {
 	}
 	hc.validator = newValidator()
 	hc.userService = service.NewUserService(hc.db)
+	hc.gameService = service.NewGameService(hc.db)
+	hc.cageService = service.NewCageService(hc.db)
+	hc.hamsterService = service.NewHamsterService(hc.db)
+
 	public := router.Group("/")
 	public.Handle(http.MethodGet, "/_health", hc.GetHealth)
 

service/game_service.go

@@ -1,6 +1,9 @@
 package service
 
-import "hamster-tycoon/storage/dao"
+import (
+	"hamster-tycoon/storage/dao"
+	"hamster-tycoon/storage/model"
+)
 
 type GameService struct {
 	serviceContext
@@ -8,4 +11,20 @@ type GameService struct {
 
 func NewGameService(database dao.Database) *GameService {
 	return &GameService{serviceContext{db: database}}
-}
+}
+
+func (gs *GameService) GetAGameById(id string) (*model.Game, error) {
+	game, err := gs.db.GetGameById(id)
+	if err != nil {
+		if castedError, ok := err.(*dao.DAOError); ok {
+			switch castedError.Type {
+			case dao.ErrTypeNotFound:
+				return nil, &model.ErrNotFound
+			default:
+				return nil, &model.ErrInternalServer
+			}
+		}
+		return nil, &model.ErrInternalServer
+	}
+	return game, nil
+}

storage/dao/fake/database_fake_games.go

@@ -1,16 +1,59 @@
 package fake
 
-import "hamster-tycoon/storage/model"
+import (
+	"encoding/json"
+	"errors"
+	uuid "github.com/satori/go.uuid"
+	"hamster-tycoon/storage/dao"
+	"hamster-tycoon/storage/model"
+	"hamster-tycoon/utils"
+)
+
+const (
+	cacheKeyGames = "games"
+)
+
+func (db *DatabaseFake) saveGames(games []*model.Game) {
+	data := make([]interface{}, 0)
+	for _, v := range games {
+		data = append(data, v)
+	}
+	db.save(cacheKeyGames, data)
+}
+
+func (db *DatabaseFake) loadGames() []*model.Game {
+	games := make([]*model.Game, 0)
+	b, err := db.Cache.Get(cacheKeyGames)
+	if err != nil {
+		return games
+	}
+	err = json.Unmarshal(b, &games)
+	if err != nil {
+		utils.GetLogger().WithError(err).Error("Error while unmarshal fake users")
+	}
+	return games
+}
 
 func (db *DatabaseFake) GetAllGames() ([]*model.Game, error) {
-	return nil, nil
+	return db.loadGames(), nil
 }
 
-func (db *DatabaseFake) GetGameById(string) (*model.Game, error) {
-	return nil, nil
+func (db *DatabaseFake) GetGameById(gameId string) (*model.Game, error) {
+	games := db.loadGames()
+	for _, g := range games {
+		if g.ID == gameId {
+			return g, nil
+		}
+	}
+	return nil, dao.NewDAOError(dao.ErrTypeNotFound, errors.New("game not found"))
 }
 
-func (db *DatabaseFake) CreateGame(*model.Game) error {
+func (db *DatabaseFake) CreateGame(game *model.Game) error {
+	game.ID = uuid.NewV4().String()
+
+	games := db.loadGames()
+	games = append(games, game)
+	db.saveGames(games)
 	return nil
 }