[feature] More consistent API error handling (#637)

* update templates

* start reworking api error handling

* update template

* return AP status at web endpoint if negotiated

* start making api error handling much more consistent

* update account endpoints to new error handling

* use new api error handling in admin endpoints

* go fmt ./...

* use api error logic in app

* use generic error handling in auth

* don't export generic error handler

* don't defer clearing session

* user nicer error handling on oidc callback handler

* tidy up the sign in handler

* tidy up the token handler

* use nicer error handling in blocksget

* auth emojis endpoint

* fix up remaining api endpoints

* fix whoopsie during login flow

* regenerate swagger docs

* change http error logging to debug

1 files changed, 7 insertions, 10 deletions

diff --git a/internal/api/client/instance/instanceget.go b/internal/api/client/instance/instanceget.go
index cd6dd32cc..35e842102 100644
--- a/internal/api/client/instance/instanceget.go
+++ b/internal/api/client/instance/instanceget.go
@@ -3,9 +3,9 @@ package instance
 import (
 	"net/http"
 
-	"github.com/sirupsen/logrus"
 	"github.com/superseriousbusiness/gotosocial/internal/api"
 	"github.com/superseriousbusiness/gotosocial/internal/config"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
 
 	"github.com/gin-gonic/gin"
 )
@@ -30,22 +30,19 @@ import (
 //     description: "Instance information."
 //     schema:
 //       "$ref": "#/definitions/instance"
+//   '406':
+//      description: not acceptable
 //   '500':
 //      description: internal error
 func (m *Module) InstanceInformationGETHandler(c *gin.Context) {
-	l := logrus.WithField("func", "InstanceInformationGETHandler")
-
 	if _, err := api.NegotiateAccept(c, api.JSONAcceptHeaders...); err != nil {
-		c.JSON(http.StatusNotAcceptable, gin.H{"error": err.Error()})
+		api.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGet)
 		return
 	}
 
-	host := config.GetHost()
-
-	instance, err := m.processor.InstanceGet(c.Request.Context(), host)
-	if err != nil {
-		l.Debugf("error getting instance from processor: %s", err)
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "internal server error"})
+	instance, errWithCode := m.processor.InstanceGet(c.Request.Context(), config.GetHost())
+	if errWithCode != nil {
+		api.ErrorHandler(c, errWithCode, m.processor.InstanceGet)
 		return
 	}