Adding Group Variables support (#443)

* Adding Group Variables support

* Fixing naming per request

* Fixing merge conflict

* Fixing merge conflict

gitlab.go

@@ -288,6 +288,7 @@ type Client struct {
 	GroupIssueBoards      *GroupIssueBoardsService
 	GroupMembers          *GroupMembersService
 	GroupMilestones       *GroupMilestonesService
+	GroupVariables        *GroupVariablesService
 	Issues                *IssuesService
 	IssueLinks            *IssueLinksService
 	Jobs                  *JobsService
@@ -421,6 +422,7 @@ func newClient(httpClient *http.Client) *Client {
 	c.GroupIssueBoards = &GroupIssueBoardsService{client: c}
 	c.GroupMembers = &GroupMembersService{client: c}
 	c.GroupMilestones = &GroupMilestonesService{client: c}
+	c.GroupVariables = &GroupVariablesService{client: c}
 	c.Issues = &IssuesService{client: c, timeStats: timeStats}
 	c.IssueLinks = &IssueLinksService{client: c}
 	c.Jobs = &JobsService{client: c}

group_variables.go

+//
+// Copyright 2018, Patrick Webster
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package gitlab
+
+import (
+	"fmt"
+	"net/url"
+)
+
+// GroupVariablesService handles communication with the
+// group variables related methods of the GitLab API.
+//
+// GitLab API docs:
+// https://docs.gitlab.com/ee/api/group_level_variables.html
+type GroupVariablesService struct {
+	client *Client
+}
+
+// GroupVariable represents a GitLab group Variable.
+//
+// GitLab API docs:
+// https://docs.gitlab.com/ee/api/group_level_variables.html
+type GroupVariable struct {
+	Key       string `json:"key"`
+	Value     string `json:"value"`
+	Protected bool   `json:"protected"`
+}
+
+func (v GroupVariable) String() string {
+	return Stringify(v)
+}
+
+// ListVariables gets a list of all variables for a group.
+//
+// GitLab API docs:
+// https://docs.gitlab.com/ee/api/group_level_variables.html#list-group-variables
+func (s *GroupVariablesService) ListVariables(gid interface{}, options ...OptionFunc) ([]*GroupVariable, *Response, error) {
+	group, err := parseID(gid)
+	if err != nil {
+		return nil, nil, err
+	}
+	u := fmt.Sprintf("groups/%s/variables", url.QueryEscape(group))
+
+	req, err := s.client.NewRequest("GET", u, nil, options)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var vs []*GroupVariable
+	resp, err := s.client.Do(req, &vs)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return vs, resp, err
+}
+
+// GetVariable gets a variable.
+//
+// GitLab API docs:
+// https://docs.gitlab.com/ee/api/group_level_variables.html#show-variable-details
+func (s *GroupVariablesService) GetVariable(gid interface{}, key string, options ...OptionFunc) (*GroupVariable, *Response, error) {
+	group, err := parseID(gid)
+	if err != nil {
+		return nil, nil, err
+	}
+	u := fmt.Sprintf("groups/%s/variables/%s", url.QueryEscape(group), url.QueryEscape(key))
+
+	req, err := s.client.NewRequest("GET", u, nil, options)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	v := new(GroupVariable)
+	resp, err := s.client.Do(req, v)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return v, resp, err
+}
+
+// CreateVariable creates a new group variable.
+//
+// GitLab API docs:
+// https://docs.gitlab.com/ee/api/group_level_variables.html#create-variable
+func (s *GroupVariablesService) CreateVariable(gid interface{}, opt *CreateVariableOptions, options ...OptionFunc) (*GroupVariable, *Response, error) {
+	group, err := parseID(gid)
+	if err != nil {
+		return nil, nil, err
+	}
+	u := fmt.Sprintf("groups/%s/variables", url.QueryEscape(group))
+
+	req, err := s.client.NewRequest("POST", u, opt, options)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	v := new(GroupVariable)
+	resp, err := s.client.Do(req, v)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return v, resp, err
+}
+
+// UpdateVariable updates the position of an existing
+// group issue board list.
+//
+// GitLab API docs:
+// https://docs.gitlab.com/ee/api/group_level_variables.html#update-variable
+func (s *GroupVariablesService) UpdateVariable(gid interface{}, key string, opt *UpdateVariableOptions, options ...OptionFunc) (*GroupVariable, *Response, error) {
+	group, err := parseID(gid)
+	if err != nil {
+		return nil, nil, err
+	}
+	u := fmt.Sprintf("groups/%s/variables/%s",
+		url.QueryEscape(group),
+		url.QueryEscape(key),
+	)
+
+	req, err := s.client.NewRequest("PUT", u, opt, options)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	v := new(GroupVariable)
+	resp, err := s.client.Do(req, v)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return v, resp, err
+}
+
+// RemoveVariable removes a group's variable.
+//
+// GitLab API docs:
+// https://docs.gitlab.com/ee/api/group_level_variables.html#remove-variable
+func (s *GroupVariablesService) RemoveVariable(gid interface{}, key string, options ...OptionFunc) (*Response, error) {
+	group, err := parseID(gid)
+	if err != nil {
+		return nil, err
+	}
+	u := fmt.Sprintf("groups/%s/variables/%s",
+		url.QueryEscape(group),
+		url.QueryEscape(key),
+	)
+
+	req, err := s.client.NewRequest("DELETE", u, nil, options)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(req, nil)
+}