add getting user data cli

cmd/user_data.go

@@ -15,6 +15,18 @@ var UserData = &cli.Command{
 	Name:  "userdata",
 	Usage: "lab user data maintenance",
 	Subcommands: []*cli.Command{
+		{
+			Name:   "user-get",
+			Usage:  "Get specified user info",
+			Action: getUserInfo,
+			Flags: []cli.Flag{
+				&cli.StringFlag{
+					Name:    "username",
+					Aliases: []string{"n"},
+					Usage:   "Specific user name",
+				},
+			},
+		},
 		{
 			Name:   "transaction-check",
 			Usage:  "Check whether user all transactions and accounts are correct",
@@ -47,6 +59,26 @@ var UserData = &cli.Command{
 	},
 }
 
+func getUserInfo(c *cli.Context) error {
+	_, err := initializeSystem(c)
+
+	if err != nil {
+		return err
+	}
+
+	userName := c.String("username")
+	user, err := clis.UserData.GetUserByUsername(c, userName)
+
+	if err != nil {
+		log.BootErrorf("[user_data.getUserInfo] error occurs when getting user data")
+		return err
+	}
+
+	utils.PrintObjectFields(user)
+
+	return nil
+}
+
 func checkUserTransactionAndAccount(c *cli.Context) error {
 	_, err := initializeSystem(c)
 

pkg/cli/user_data.go

@@ -35,6 +35,23 @@ var (
 	}
 )
 
+// GetUserByUsername returns user by user name
+func (a *UserDataCli) GetUserByUsername(c *cli.Context, username string) (*models.User, error) {
+	if username == "" {
+		log.BootErrorf("[user_data.GetUserByUsername] user name is empty")
+		return nil, errs.ErrUsernameIsEmpty
+	}
+
+	user, err := a.users.GetUserByUsername(username)
+
+	if err != nil {
+		log.BootErrorf("[user_data.GetUserByUsername] failed to get user by user name \"%s\", because %s", username, err.Error())
+		return nil, err
+	}
+
+	return user, nil
+}
+
 // CheckTransactionAndAccount checks whether all user transactions and all user accounts are correct
 func (a *UserDataCli) CheckTransactionAndAccount(c *cli.Context, uid int64) (bool, error) {
 	accountMap, categoryMap, tagMap, tagIndexs, err := a.getUserEssentialData(uid)
@@ -171,12 +188,7 @@ func (a *UserDataCli) ExportTransaction(c *cli.Context, uid int64) ([]byte, erro
 
 // GetUserIdByUsername returns user id by user name
 func (a *UserDataCli) GetUserIdByUsername(c *cli.Context, username string) (int64, error) {
-	if username == "" {
+	user, err := a.GetUserByUsername(c, username)
-		log.BootErrorf("[user_data.GetUserIdByUsername] user name is empty")
-		return 0, errs.ErrUsernameIsEmpty
-	}
-
-	user, err := a.users.GetUserByUsername(username)
 
 	if err != nil {
 		log.BootErrorf("[user_data.GetUserIdByUsername] failed to get user by user name \"%s\", because %s", username, err.Error())

pkg/utils/object.go

@@ -3,6 +3,8 @@ package utils
 import (
 	"bytes"
 	"encoding/gob"
+	"fmt"
+	"reflect"
 )
 
 // Clone deep-clones src object to dst object
@@ -21,3 +23,18 @@ func Clone(src, dst interface{}) error {
 
 	return nil
 }
+
+// PrintObjectFields prints all fields in specified object
+func PrintObjectFields(obj interface{}) {
+	if obj == nil {
+		return
+	}
+
+	elem := reflect.ValueOf(obj).Elem()
+	typ := elem.Type()
+
+	for i := 0; i < elem.NumField(); i++ {
+		field := elem.Field(i)
+		fmt.Printf("[%s] %v\n", typ.Field(i).Name, field.Interface())
+	}
+}