Inbox post (#22)

Inbox POST from federated servers now working for statuses and follow requests.
    Follow request client API added.
    Start work on federating outgoing messages.
    Other fixes and changes/tidying up.

internal/db/db.go

@@ -26,7 +26,10 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 )
 
-const DBTypePostgres string = "POSTGRES"
+const (
+	// DBTypePostgres represents an underlying POSTGRES database type.
+	DBTypePostgres string = "POSTGRES"
+)
 
 // ErrNoEntries is to be returned from the DB interface when no entries are found for a given query.
 type ErrNoEntries struct{}
@@ -112,6 +115,10 @@ type DB interface {
 		HANDY SHORTCUTS
 	*/
 
+	// AcceptFollowRequest moves a follow request in the database from the follow_requests table to the follows table.
+	// In other words, it should create the follow, and delete the existing follow request.
+	AcceptFollowRequest(originAccountID string, targetAccountID string) error
+
 	// CreateInstanceAccount creates an account in the database with the same username as the instance host value.
 	// Ie., if the instance is hosted at 'example.org' the instance user will have a username of 'example.org'.
 	// This is needed for things like serving files that belong to the instance and not an individual user/account.
@@ -148,6 +155,11 @@ type DB interface {
 	// In case of no entries, a 'no entries' error will be returned
 	GetFollowersByAccountID(accountID string, followers *[]gtsmodel.Follow) error
 
+	// GetFavesByAccountID is a shortcut for the common action of fetching a list of faves made by the given accountID.
+	// The given slice 'faves' will be set to the result of the query, whatever it is.
+	// In case of no entries, a 'no entries' error will be returned
+	GetFavesByAccountID(accountID string, faves *[]gtsmodel.StatusFave) error
+
 	// GetStatusesByAccountID is a shortcut for the common action of fetching a list of statuses produced by accountID.
 	// The given slice 'statuses' will be set to the result of the query, whatever it is.
 	// In case of no entries, a 'no entries' error will be returned