Add support for read-only mode for web UI.

Fixes #402.

3 files changed, 40 insertions, 6 deletions

diff --git a/graphql/resolvers/mutation.go b/graphql/resolvers/mutation.go
index 850645f4..80d6fb1a 100644
--- a/graphql/resolvers/mutation.go
+++ b/graphql/resolvers/mutation.go
@@ -7,8 +7,32 @@ import (
 	"github.com/MichaelMure/git-bug/cache"
 	"github.com/MichaelMure/git-bug/graphql/graph"
 	"github.com/MichaelMure/git-bug/graphql/models"
+	"github.com/vektah/gqlparser/gqlerror"
 )
 
+var _ graph.MutationResolver = &readonlyMutationResolver{}
+
+type readonlyMutationResolver struct{}
+
+func (readonlyMutationResolver) NewBug(_ context.Context, _ models.NewBugInput) (*models.NewBugPayload, error) {
+	return nil, gqlerror.Errorf("readonly mode")
+}
+func (readonlyMutationResolver) AddComment(_ context.Context, input models.AddCommentInput) (*models.AddCommentPayload, error) {
+	return nil, gqlerror.Errorf("readonly mode")
+}
+func (readonlyMutationResolver) ChangeLabels(_ context.Context, input *models.ChangeLabelInput) (*models.ChangeLabelPayload, error) {
+	return nil, gqlerror.Errorf("readonly mode")
+}
+func (readonlyMutationResolver) OpenBug(_ context.Context, input models.OpenBugInput) (*models.OpenBugPayload, error) {
+	return nil, gqlerror.Errorf("readonly mode")
+}
+func (readonlyMutationResolver) CloseBug(_ context.Context, input models.CloseBugInput) (*models.CloseBugPayload, error) {
+	return nil, gqlerror.Errorf("readonly mode")
+}
+func (readonlyMutationResolver) SetTitle(_ context.Context, input models.SetTitleInput) (*models.SetTitlePayload, error) {
+	return nil, gqlerror.Errorf("readonly mode")
+}
+
 var _ graph.MutationResolver = &mutationResolver{}
 
 type mutationResolver struct {
diff --git a/graphql/resolvers/repo.go b/graphql/resolvers/repo.go
index 639e8f90..e30b49f0 100644
--- a/graphql/resolvers/repo.go
+++ b/graphql/resolvers/repo.go
@@ -5,6 +5,7 @@ import (
 
 	"github.com/MichaelMure/git-bug/bug"
 	"github.com/MichaelMure/git-bug/entity"
+	"github.com/MichaelMure/git-bug/graphql/config"
 	"github.com/MichaelMure/git-bug/graphql/connections"
 	"github.com/MichaelMure/git-bug/graphql/graph"
 	"github.com/MichaelMure/git-bug/graphql/models"
@@ -13,7 +14,7 @@ import (
 
 var _ graph.RepositoryResolver = &repoResolver{}
 
-type repoResolver struct{}
+type repoResolver struct{ cfg config.Config }
 
 func (repoResolver) Name(_ context.Context, obj *models.Repository) (*string, error) {
 	name := obj.Repo.Name()
@@ -149,7 +150,10 @@ func (repoResolver) Identity(_ context.Context, obj *models.Repository, prefix s
 	return models.NewLazyIdentity(obj.Repo, excerpt), nil
 }
 
-func (repoResolver) UserIdentity(_ context.Context, obj *models.Repository) (models.IdentityWrapper, error) {
+func (r repoResolver) UserIdentity(_ context.Context, obj *models.Repository) (models.IdentityWrapper, error) {
+	if r.cfg.ReadOnly {
+		return nil, nil
+	}
 	excerpt, err := obj.Repo.GetUserIdentityExcerpt()
 	if err != nil {
 		return nil, err
diff --git a/graphql/resolvers/root.go b/graphql/resolvers/root.go
index 9973ff59..214bbae3 100644
--- a/graphql/resolvers/root.go
+++ b/graphql/resolvers/root.go
@@ -3,6 +3,7 @@ package resolvers
 
 import (
 	"github.com/MichaelMure/git-bug/cache"
+	"github.com/MichaelMure/git-bug/graphql/config"
 	"github.com/MichaelMure/git-bug/graphql/graph"
 )
 
@@ -10,11 +11,13 @@ var _ graph.ResolverRoot = &RootResolver{}
 
 type RootResolver struct {
 	cache.MultiRepoCache
+	cfg config.Config
 }
 
-func NewRootResolver() *RootResolver {
+func NewRootResolver(cfg config.Config) *RootResolver {
 	return &RootResolver{
 		MultiRepoCache: cache.NewMultiRepoCache(),
+		cfg:            cfg,
 	}
 }
 
@@ -25,13 +28,16 @@ func (r RootResolver) Query() graph.QueryResolver {
 }
 
 func (r RootResolver) Mutation() graph.MutationResolver {
+	if r.cfg.ReadOnly {
+		return &readonlyMutationResolver{}
+	}
 	return &mutationResolver{
 		cache: &r.MultiRepoCache,
 	}
 }
 
-func (RootResolver) Repository() graph.RepositoryResolver {
-	return &repoResolver{}
+func (r RootResolver) Repository() graph.RepositoryResolver {
+	return &repoResolver{r.cfg}
 }
 
 func (RootResolver) Bug() graph.BugResolver {
@@ -50,7 +56,7 @@ func (RootResolver) Label() graph.LabelResolver {
 	return &labelResolver{}
 }
 
-func (r RootResolver) Identity() graph.IdentityResolver {
+func (RootResolver) Identity() graph.IdentityResolver {
 	return &identityResolver{}
 }