first commit

internal/handler/auth_handler.go

@@ -0,0 +1,114 @@
+package handler
+
+import (
+	"net/http"
+
+	"homework-manager/internal/middleware"
+	"homework-manager/internal/service"
+
+	"github.com/gin-contrib/sessions"
+	"github.com/gin-gonic/gin"
+)
+
+type AuthHandler struct {
+	authService *service.AuthService
+}
+
+func NewAuthHandler() *AuthHandler {
+	return &AuthHandler{
+		authService: service.NewAuthService(),
+	}
+}
+
+func (h *AuthHandler) ShowLogin(c *gin.Context) {
+	RenderHTML(c, http.StatusOK, "login.html", gin.H{
+		"title": "ログイン",
+	})
+}
+
+func (h *AuthHandler) Login(c *gin.Context) {
+	email := c.PostForm("email")
+	password := c.PostForm("password")
+
+	user, err := h.authService.Login(email, password)
+	if err != nil {
+		RenderHTML(c, http.StatusOK, "login.html", gin.H{
+			"title": "ログイン",
+			"error": "メールアドレスまたはパスワードが正しくありません",
+			"email": email,
+		})
+		return
+	}
+
+	session := sessions.Default(c)
+	session.Set(middleware.UserIDKey, user.ID)
+	session.Set(middleware.UserRoleKey, user.Role)
+	session.Set(middleware.UserNameKey, user.Name)
+	session.Save()
+
+	c.Redirect(http.StatusFound, "/")
+}
+
+func (h *AuthHandler) ShowRegister(c *gin.Context) {
+	RenderHTML(c, http.StatusOK, "register.html", gin.H{
+		"title": "新規登録",
+	})
+}
+
+func (h *AuthHandler) Register(c *gin.Context) {
+	email := c.PostForm("email")
+	password := c.PostForm("password")
+	passwordConfirm := c.PostForm("password_confirm")
+	name := c.PostForm("name")
+
+	if password != passwordConfirm {
+		RenderHTML(c, http.StatusOK, "register.html", gin.H{
+			"title": "新規登録",
+			"error": "パスワードが一致しません",
+			"email": email,
+			"name":  name,
+		})
+		return
+	}
+
+	if len(password) < 8 {
+		RenderHTML(c, http.StatusOK, "register.html", gin.H{
+			"title": "新規登録",
+			"error": "パスワードは8文字以上で入力してください",
+			"email": email,
+			"name":  name,
+		})
+		return
+	}
+
+	user, err := h.authService.Register(email, password, name)
+	if err != nil {
+		errorMsg := "登録に失敗しました"
+		if err == service.ErrEmailAlreadyExists {
+			errorMsg = "このメールアドレスは既に使用されています"
+		}
+		RenderHTML(c, http.StatusOK, "register.html", gin.H{
+			"title": "新規登録",
+			"error": errorMsg,
+			"email": email,
+			"name":  name,
+		})
+		return
+	}
+
+	session := sessions.Default(c)
+	session.Set(middleware.UserIDKey, user.ID)
+	session.Set(middleware.UserRoleKey, user.Role)
+	session.Set(middleware.UserNameKey, user.Name)
+	session.Save()
+
+	c.Redirect(http.StatusFound, "/")
+}
+
+func (h *AuthHandler) Logout(c *gin.Context) {
+	session := sessions.Default(c)
+	session.Clear()
+	session.Save()
+
+	c.Redirect(http.StatusFound, "/login")
+}