Domain block (#76)

* start work on admin domain blocking

* move stuff around + further work on domain blocks

* move + restructure processor

* prep work for deleting account

* tidy

* go fmt

* formatting

* domain blocking more work

* check domain blocks way earlier on

* progress on delete account

* delete more stuff when an account is gone

* and more...

* domain blocky block block

* get individual domain block, delete a block

internal/processing/admin/getdomainblock.go

@@ -0,0 +1,30 @@
+package admin
+
+import (
+	"fmt"
+
+	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
+
+func (p *processor) DomainBlockGet(account *gtsmodel.Account, id string, export bool) (*apimodel.DomainBlock, gtserror.WithCode) {
+	domainBlock := &gtsmodel.DomainBlock{}
+
+	if err := p.db.GetByID(id, domainBlock); err != nil {
+		if _, ok := err.(db.ErrNoEntries); !ok {
+			// something has gone really wrong
+			return nil, gtserror.NewErrorInternalError(err)
+		}
+		// there are no entries for this ID
+		return nil, gtserror.NewErrorNotFound(fmt.Errorf("no entry for ID %s", id))
+	}
+
+	mastoDomainBlock, err := p.tc.DomainBlockToMasto(domainBlock, export)
+	if err != nil {
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return mastoDomainBlock, nil
+}