[feature] add authorization to the already-existing authentication (#365)

* add ensureUserIsAuthorizedOrRedirect to /oauth/authorize

* adding authorization (email confirm, account approve, etc) to TokenCheck

* revert un-needed changes to signin.go

* oops what happened here

* error css

* add account.SuspendedAt check

* remove redundant checks from oauth util Authed function

* wip tests

* tests passing

* stop stripping useful information from ErrAlreadyExists

* that feeling of scraping the dryer LINT off the screen

* oops I didn't mean to get rid of this NewTestRouter function

* make tests work with recorder

* re-add ConfigureTemplatesWithGin to handle template path err

Co-authored-by: tsmethurst <tobi.smethurst@protonmail.com>

internal/db/error.go

@@ -28,8 +28,19 @@ var (
 	ErrNoEntries Error = fmt.Errorf("no entries")
 	// ErrMultipleEntries is returned when a caller expected ONE entry for a query, but multiples were found.
 	ErrMultipleEntries Error = fmt.Errorf("multiple entries")
-	// ErrAlreadyExists is returned when a caller tries to insert a database entry that already exists in the db.
-	ErrAlreadyExists Error = fmt.Errorf("already exists")
 	// ErrUnknown denotes an unknown database error.
 	ErrUnknown Error = fmt.Errorf("unknown error")
 )
+
+// ErrAlreadyExists is returned when a caller tries to insert a database entry that already exists in the db.
+type ErrAlreadyExists struct {
+	message string
+}
+
+func (e *ErrAlreadyExists) Error() string {
+	return e.message
+}
+
+func NewErrAlreadyExists(msg string) error {
+	return &ErrAlreadyExists{message: msg}
+}