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feat じゃんけんゲーム用のハンドラを作成 #5
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| package handler | ||
|
|
||
| import ( | ||
| "database/sql" | ||
| "fmt" | ||
| "math/rand" | ||
| "net/http" | ||
|
|
||
| "github.com/labstack/echo/v5" | ||
| ) | ||
|
|
||
| var winningMap = map[string]string{ | ||
| "rock": "scissors", | ||
| "scissors": "paper", | ||
| "paper": "rock", | ||
| } | ||
|
|
||
| type GameHandler struct { | ||
| db *sql.DB | ||
| } | ||
|
|
||
| func NewGameHandler(db *sql.DB) *GameHandler { | ||
| return &GameHandler{db: db} | ||
| } | ||
|
|
||
| // リクエストボディの構造体 | ||
| type PlayGameRequest struct { | ||
| UserHand string `json:"user_hand"` // "rock", "scissors", "paper" | ||
| } | ||
|
|
||
| // 200 OK: 成功時のレスポンス | ||
| type PlayGameResponse struct { | ||
| Result string `json:"result"` // "win", "lose", "draw" | ||
| CPUHand string `json:"cpu_hand"` // "rock", "scissors", "paper" | ||
| } | ||
|
|
||
| // PlayGame godoc | ||
| // @Summary じゃんけんを実行する | ||
| // @Description ユーザーの手を受け取って、CPUとのじゃんけん対戦の結果を返してくれるAPI | ||
| // @Accept json | ||
| // @Produce json | ||
| // @Param request body PlayGameRequest true "ユーザーの手" | ||
| // @Success 200 {object} PlayGameResponse | ||
| // @Failure 400 {object} map[string]string | ||
| // @Router /janken [post] | ||
| func (g *GameHandler) PlayGame(c *echo.Context) error { | ||
| // ユーザーの手を読み込む | ||
| var req PlayGameRequest | ||
| if err := c.Bind(&req); err != nil { | ||
| fmt.Println(err) | ||
| return c.JSON(http.StatusBadRequest, map[string]string{"error": "リクエストが不正です", "cause": err.Error()}) | ||
| } | ||
|
|
||
| // rock, scissors, paper以外を弾く | ||
| if _, exists := winningMap[req.UserHand]; !exists { | ||
| return c.JSON(http.StatusBadRequest, map[string]string{"error": "rock, scissors, paperのいずれかを送信してください"}) | ||
| } | ||
|
|
||
| // CPUの手をランダムに決める | ||
| hands := []string{"rock", "scissors", "paper"} | ||
| cpuHand := hands[rand.Intn(3)] | ||
|
|
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| // 勝敗を判定する | ||
| result := getMatchResult(req.UserHand, cpuHand) | ||
|
|
||
| // JSONで結果を返す | ||
| res := PlayGameResponse{ | ||
| Result: result, | ||
| CPUHand: cpuHand, | ||
| } | ||
| return c.JSON(http.StatusOK, res) | ||
| } | ||
|
|
||
| func getMatchResult(userHand, cpuHand string) string { | ||
| ans := "lose" | ||
|
|
||
| if userHand == cpuHand { | ||
| ans = "draw" | ||
| } else if winningMap[userHand] == cpuHand { | ||
| ans = "win" | ||
| } | ||
| return ans | ||
| } |
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Janken を追加したけど、main.go でそれを作って渡す部分がまだないから、main.go の方で Health と同じようにJankenも追加してもらえると!
現時点では特にDBとの接続とかはないけど、将来的に追加するときに必要になってくるのでお願いします!