[chore] reformat GetAccount() functionality, support updating accounts based on last_fetch (#1411)

* reformat GetAccount() functionality, and add UpdateAccount() function.

* use fetched_at instead of last_webfingered_at

* catch local "not found" errors. small formatting / error string changes

* remove now unused error type

* return nil when wrapping nil error

* update expected error messages

* return correct url for foss satan webfinger

* add AP model for Some_User

* normalize local domain

* return notretrievable where appropriate

* expose NewErrNotRetrievable

* ensure webfinger for new accounts searched by uri

* update local account short circuit

* allow enrich to fail for already-known accounts

* remove unused LastWebfingeredAt

* expose test maps on mock http client

* update Update test

* reformat GetAccount() functionality, and add UpdateAccount() function.

* use fetched_at instead of last_webfingered_at

* catch local "not found" errors. small formatting / error string changes

* remove nil error checks (we shouldn't be passing nil errors to newError() initializers)

* remove mutex unlock on transport init fail (it hasn't yet been locked!)

* woops add back the error wrapping to use ErrNotRetrievable

* caches were never being started... 🙈

---------

Signed-off-by: kim <grufwub@gmail.com>
Co-authored-by: tsmethurst <tobi.smethurst@protonmail.com>

internal/federation/gone.go

@@ -2,12 +2,10 @@ package federation
 
 import (
 	"context"
-	"fmt"
 	"net/url"
 
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/id"
-	"github.com/superseriousbusiness/gotosocial/internal/log"
 )
 
 // CheckGone checks if a tombstone exists in the database for AP Actor or Object with the given uri.
@@ -17,18 +15,10 @@ func (f *federator) CheckGone(ctx context.Context, uri *url.URL) (bool, error) {
 
 // HandleGone puts a tombstone in the database, which marks an AP Actor or Object with the given uri as gone.
 func (f *federator) HandleGone(ctx context.Context, uri *url.URL) error {
-	tombstoneID, err := id.NewULID()
-	if err != nil {
-		err = fmt.Errorf("HandleGone: error generating id for new tombstone %s: %s", uri, err)
-		log.Error(err)
-		return err
-	}
-
 	tombstone := &gtsmodel.Tombstone{
-		ID:     tombstoneID,
+		ID:     id.NewULID(),
 		Domain: uri.Host,
 		URI:    uri.String(),
 	}
-
 	return f.db.PutTombstone(ctx, tombstone)
 }