chore(api): support ignore password if login source type is LDAP for creating user API (#28491) (#28525)

Backport #28491 by @appleboy

- Modify the `Password` field in `CreateUserOption` struct to remove the
`Required` tag
- Update the `v1_json.tmpl` template to include the `email` field and
remove the `password` field

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Co-authored-by: Bo-Yi Wu <appleboy.tw@gmail.com>
(cherry picked from commit 411310d698)

modules/structs/admin_user.go

@@ -15,9 +15,8 @@ type CreateUserOption struct {
 	FullName string `json:"full_name" binding:"MaxSize(100)"`
 	// required: true
 	// swagger:strfmt email
-	Email string `json:"email" binding:"Required;Email;MaxSize(254)"`
-	// required: true
-	Password           string `json:"password" binding:"Required;MaxSize(255)"`
+	Email              string `json:"email" binding:"Required;Email;MaxSize(254)"`
+	Password           string `json:"password" binding:"MaxSize(255)"`
 	MustChangePassword *bool  `json:"must_change_password"`
 	SendNotify         bool   `json:"send_notify"`
 	Restricted         *bool  `json:"restricted"`

routers/api/v1/admin/user.go

@@ -93,18 +93,28 @@ func CreateUser(ctx *context.APIContext) {
 	if ctx.Written() {
 		return
 	}
-	if !password.IsComplexEnough(form.Password) {
-		err := errors.New("PasswordComplexity")
-		ctx.Error(http.StatusBadRequest, "PasswordComplexity", err)
-		return
-	}
-	pwned, err := password.IsPwned(ctx, form.Password)
-	if pwned {
-		if err != nil {
-			log.Error(err.Error())
+
+	if u.LoginType == auth.Plain {
+		if len(form.Password) < setting.MinPasswordLength {
+			err := errors.New("PasswordIsRequired")
+			ctx.Error(http.StatusBadRequest, "PasswordIsRequired", err)
+			return
+		}
+
+		if !password.IsComplexEnough(form.Password) {
+			err := errors.New("PasswordComplexity")
+			ctx.Error(http.StatusBadRequest, "PasswordComplexity", err)
+			return
+		}
+
+		pwned, err := password.IsPwned(ctx, form.Password)
+		if pwned {
+			if err != nil {
+				log.Error(err.Error())
+			}
+			ctx.Error(http.StatusBadRequest, "PasswordPwned", errors.New("PasswordPwned"))
+			return
 		}
-		ctx.Error(http.StatusBadRequest, "PasswordPwned", errors.New("PasswordPwned"))
-		return
 	}
 
 	overwriteDefault := &user_model.CreateUserOverwriteOptions{

templates/swagger/v1_json.tmpl

@@ -18596,8 +18596,7 @@
       "type": "object",
       "required": [
         "username",
-        "email",
-        "password"
+        "email"
       ],
       "properties": {
         "created_at": {