Implemented FindMembership method in organization service for gitea driver (#263)

* implementation of FindMembership method in organization service for gitea driver
* gitea driver testcase for organization membership

scm/driver/gitea/org.go

@@ -23,7 +23,13 @@ func (s *organizationService) Find(ctx context.Context, name string) (*scm.Organ
 }
 
 func (s *organizationService) FindMembership(ctx context.Context, name, username string) (*scm.Membership, *scm.Response, error) {
-	return nil, nil, scm.ErrNotSupported
+	membership := new(membership)
+	membership.Active = s.checkMembership(ctx, name, username)
+	out := new(permissions)
+	path := fmt.Sprintf("api/v1/users/%s/orgs/%s/permissions", username, name)
+	res, err := s.client.do(ctx, "GET", path, nil, out)
+	membership.Permissions = out
+	return convertMembership(membership), res, err
 }
 
 func (s *organizationService) List(ctx context.Context, opts scm.ListOptions) ([]*scm.Organization, *scm.Response, error) {
@@ -33,6 +39,18 @@ func (s *organizationService) List(ctx context.Context, opts scm.ListOptions) ([
 	return convertOrgList(out), res, err
 }
 
+type permissions struct {
+	IsOwner             bool `json:"is_owner"`
+	IsAdmin             bool `json:"is_admin"`
+	CanWrite            bool `json:"can_write"`
+	CanRead             bool `json:"can_read"`
+	CanCreateRepository bool `json:"can_create_repository"`
+}
+type membership struct {
+	Permissions *permissions
+	Active      bool
+}
+
 //
 // native data structures
 //
@@ -60,3 +78,27 @@ func convertOrg(from *org) *scm.Organization {
 		Avatar: from.Avatar,
 	}
 }
+
+func (s *organizationService) checkMembership(ctx context.Context, name, username string) bool {
+	path := fmt.Sprintf("api/v1/orgs/%s/members/%s", name, username)
+	res, err := s.client.do(ctx, "GET", path, nil, nil)
+	if err != nil {
+		return false
+	}
+	return res.Status == 204
+}
+
+func convertMembership(from *membership) *scm.Membership {
+	to := new(scm.Membership)
+	to.Active = from.Active
+	isAdmin := from.Permissions.IsAdmin
+	isMember := from.Permissions.CanRead || from.Permissions.CanWrite || from.Permissions.CanCreateRepository
+	if isAdmin {
+		to.Role = scm.RoleAdmin
+	} else if isMember {
+		to.Role = scm.RoleMember
+	} else {
+		to.Role = scm.RoleUndefined
+	}
+	return to
+}

scm/driver/gitea/org_test.go

@@ -42,10 +42,31 @@ func TestOrgFind(t *testing.T) {
 }
 
 func TestOrganizationFindMembership(t *testing.T) {
+	defer gock.Off()
+
+	gock.New("https://try.gitea.io").
+		Get("/api/v1/orgs/gogits/members/jcitizen").
+		Reply(204)
+
+	gock.New("https://try.gitea.io").
+		Get("/api/v1/users/jcitizen/orgs/gogits/permissions").
+		Reply(200).
+		Type("application/json").
+		File("testdata/permissions.json")
+
 	client, _ := New("https://try.gitea.io")
-	_, _, err := client.Organizations.FindMembership(context.Background(), "gogits", "jcitizen")
-	if err != scm.ErrNotSupported {
-		t.Errorf("Expect Not Supported error")
+	got, _, err := client.Organizations.FindMembership(context.Background(), "gogits", "jcitizen")
+	if err != nil {
+		t.Error(err)
+	}
+
+	want := new(scm.Membership)
+	raw, _ := ioutil.ReadFile("testdata/membership.json.golden")
+	json.Unmarshal(raw, &want)
+
+	if diff := cmp.Diff(got, want); diff != "" {
+		t.Errorf("Unexpected Results")
+		t.Log(diff)
 	}
 }
 

scm/driver/gitea/testdata/membership.json.golden

@@ -0,0 +1,4 @@
+{
+  "Active": true,
+  "Role": 2
+}

scm/driver/gitea/testdata/permissions.json

@@ -0,0 +1,7 @@
+{
+  "is_owner": true,
+  "is_admin": true,
+  "can_write": true,
+  "can_read": true,
+  "can_create_repository": true
+}