finish backend login

backend/api/user.go

@@ -0,0 +1,42 @@
+package api
+
+import (
+	"errors"
+
+	"github.com/fumiama/paper-manager/backend/global"
+)
+
+var (
+	errInvalidToken = errors.New("invalid token")
+)
+
+type getUserInfoResult struct {
+	UserID   int    `json:"userId"`
+	Username string `json:"username"`
+	RealName string `json:"realName"`
+	Avatar   string `json:"avatar"`
+	Desc     string `json:"desc"`
+	HomePath string `json:"homePath"`
+	Roles    []role `json:"roles"`
+}
+
+func getUserInfo(token string) (*getUserInfoResult, error) {
+	user := usertokens.Get(token)
+	if user == nil {
+		return nil, errInvalidToken
+	}
+	return &getUserInfoResult{
+		UserID:   *user.ID,
+		Username: user.Name,
+		RealName: user.Nick,
+		Avatar:   user.Avtr,
+		Desc:     user.Desc,
+		HomePath: func() string {
+			if user.Role == global.RoleSuper {
+				return "/dashboard/analysis"
+			}
+			return "/dashboard/workbench"
+		}(),
+		Roles: []role{{RoleName: user.Role.Nick(), Value: user.Role.String()}},
+	}, nil
+}