refactor: 调整项目目录结构，移除其他语言 API 目录

api/utils/user.go

@@ -0,0 +1,45 @@
+package utils
+
+import (
+	"chatplus/core/types"
+	"chatplus/store/model"
+	"errors"
+
+	"github.com/gin-contrib/sessions"
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+)
+
+func SetLoginUser(c *gin.Context, user model.User) error {
+	session := sessions.Default(c)
+	session.Set(types.SessionUser, user.Id)
+	// TODO: 后期用户数量增加，考虑将用户数据存储到 leveldb，避免每次查询数据库
+	return session.Save()
+}
+
+func SetLoginAdmin(c *gin.Context, admin types.Manager) error {
+	session := sessions.Default(c)
+	session.Set(types.SessionAdmin, admin.Username)
+	return session.Save()
+}
+
+func GetLoginUser(c *gin.Context, db *gorm.DB) (model.User, error) {
+	value, exists := c.Get(types.LoginUserCache)
+	if exists {
+		return value.(model.User), nil
+	}
+
+	session := sessions.Default(c)
+	userId := session.Get(types.SessionUser)
+	if userId == nil {
+		return model.User{}, errors.New("user not login")
+	}
+
+	var user model.User
+	res := db.First(&user, userId)
+	// 更新缓存
+	if res.Error == nil {
+		c.Set(types.LoginUserCache, user)
+	}
+	return user, res.Error
+}