Tidy + timeline embetterment (#38)

* tidy up timelines a bit + stub out some endpoints

* who's faved and who's boosted, reblog notifs

* linting

* Update progress with new endpoints

internal/db/db.go

@@ -253,12 +253,20 @@ type DB interface {
 	// This slice will be unfiltered, not taking account of blocks and whatnot, so filter it before serving it back to a user.
 	WhoFavedStatus(status *gtsmodel.Status) ([]*gtsmodel.Account, error)
 
+	// WhoBoostedStatus returns a slice of accounts who boosted the given status.
+	// This slice will be unfiltered, not taking account of blocks and whatnot, so filter it before serving it back to a user.
+	WhoBoostedStatus(status *gtsmodel.Status) ([]*gtsmodel.Account, error)
+
 	// GetHomeTimelineForAccount fetches the account's HOME timeline -- ie., posts and replies from people they *follow*.
 	// It will use the given filters and try to return as many statuses up to the limit as possible.
 	GetHomeTimelineForAccount(accountID string, maxID string, sinceID string, minID string, limit int, local bool) ([]*gtsmodel.Status, error)
 
+	// GetPublicTimelineForAccount fetches the account's PUBLIC timline -- ie., posts and replies that are public.
+	// It will use the given filters and try to return as many statuses as possible up to the limit.
+	GetPublicTimelineForAccount(accountID string, maxID string, sinceID string, minID string, limit int, local bool) ([]*gtsmodel.Status, error)
+
 	// GetNotificationsForAccount returns a list of notifications that pertain to the given accountID.
-	GetNotificationsForAccount(accountID string, limit int, maxID string) ([]*gtsmodel.Notification, error)
+	GetNotificationsForAccount(accountID string, limit int, maxID string, sinceID string) ([]*gtsmodel.Notification, error)
 
 	/*
 		USEFUL CONVERSION FUNCTIONS

internal/db/pg/pg.go

@@ -1115,11 +1115,36 @@ func (ps *postgresService) WhoFavedStatus(status *gtsmodel.Status) ([]*gtsmodel.
 	return accounts, nil
 }
 
+func (ps *postgresService) WhoBoostedStatus(status *gtsmodel.Status) ([]*gtsmodel.Account, error) {
+	accounts := []*gtsmodel.Account{}
+
+	boosts := []*gtsmodel.Status{}
+	if err := ps.conn.Model(&boosts).Where("boost_of_id = ?", status.ID).Select(); err != nil {
+		if err == pg.ErrNoRows {
+			return accounts, nil // no rows just means nobody has boosted this status, so that's fine
+		}
+		return nil, err // an actual error has occurred
+	}
+
+	for _, f := range boosts {
+		acc := &gtsmodel.Account{}
+		if err := ps.conn.Model(acc).Where("id = ?", f.AccountID).Select(); err != nil {
+			if err == pg.ErrNoRows {
+				continue // the account doesn't exist for some reason??? but this isn't the place to worry about that so just skip it
+			}
+			return nil, err // an actual error has occurred
+		}
+		accounts = append(accounts, acc)
+	}
+	return accounts, nil
+}
+
 func (ps *postgresService) GetHomeTimelineForAccount(accountID string, maxID string, sinceID string, minID string, limit int, local bool) ([]*gtsmodel.Status, error) {
 	statuses := []*gtsmodel.Status{}
 
-	q := ps.conn.Model(&statuses).
-		ColumnExpr("status.*").
+	q := ps.conn.Model(&statuses)
+
+	q = q.ColumnExpr("status.*").
 		Join("JOIN follows AS f ON f.target_account_id = status.account_id").
 		Where("f.account_id = ?", accountID).
 		Limit(limit).
@@ -1133,6 +1158,22 @@ func (ps *postgresService) GetHomeTimelineForAccount(accountID string, maxID str
 		q = q.Where("status.created_at < ?", s.CreatedAt)
 	}
 
+	if minID != "" {
+		s := &gtsmodel.Status{}
+		if err := ps.conn.Model(s).Where("id = ?", minID).Select(); err != nil {
+			return nil, err
+		}
+		q = q.Where("status.created_at > ?", s.CreatedAt)
+	}
+
+	if sinceID != "" {
+		s := &gtsmodel.Status{}
+		if err := ps.conn.Model(s).Where("id = ?", sinceID).Select(); err != nil {
+			return nil, err
+		}
+		q = q.Where("status.created_at > ?", s.CreatedAt)
+	}
+
 	err := q.Select()
 	if err != nil {
 		if err != pg.ErrNoRows {
@@ -1143,7 +1184,53 @@ func (ps *postgresService) GetHomeTimelineForAccount(accountID string, maxID str
 	return statuses, nil
 }
 
-func (ps *postgresService) GetNotificationsForAccount(accountID string, limit int, maxID string) ([]*gtsmodel.Notification, error) {
+func (ps *postgresService) GetPublicTimelineForAccount(accountID string, maxID string, sinceID string, minID string, limit int, local bool) ([]*gtsmodel.Status, error) {
+	statuses := []*gtsmodel.Status{}
+
+	q := ps.conn.Model(&statuses).
+		Where("visibility = ?", gtsmodel.VisibilityPublic).
+		Limit(limit).
+		Order("created_at DESC")
+
+	if maxID != "" {
+		s := &gtsmodel.Status{}
+		if err := ps.conn.Model(s).Where("id = ?", maxID).Select(); err != nil {
+			return nil, err
+		}
+		q = q.Where("created_at < ?", s.CreatedAt)
+	}
+
+	if minID != "" {
+		s := &gtsmodel.Status{}
+		if err := ps.conn.Model(s).Where("id = ?", minID).Select(); err != nil {
+			return nil, err
+		}
+		q = q.Where("created_at > ?", s.CreatedAt)
+	}
+
+	if sinceID != "" {
+		s := &gtsmodel.Status{}
+		if err := ps.conn.Model(s).Where("id = ?", sinceID).Select(); err != nil {
+			return nil, err
+		}
+		q = q.Where("created_at > ?", s.CreatedAt)
+	}
+
+	if local {
+		q = q.Where("local = ?", local)
+	}
+
+	err := q.Select()
+	if err != nil {
+		if err != pg.ErrNoRows {
+			return nil, err
+		}
+	}
+
+	return statuses, nil
+}
+
+func (ps *postgresService) GetNotificationsForAccount(accountID string, limit int, maxID string, sinceID string) ([]*gtsmodel.Notification, error) {
 	notifications := []*gtsmodel.Notification{}
 
 	q := ps.conn.Model(&notifications).Where("target_account_id = ?", accountID)
@@ -1156,6 +1243,14 @@ func (ps *postgresService) GetNotificationsForAccount(accountID string, limit in
 		q = q.Where("created_at < ?", n.CreatedAt)
 	}
 
+	if sinceID != "" {
+		n := &gtsmodel.Notification{}
+		if err := ps.conn.Model(n).Where("id = ?", sinceID).Select(); err != nil {
+			return nil, err
+		}
+		q = q.Where("created_at > ?", n.CreatedAt)
+	}
+
 	if limit != 0 {
 		q = q.Limit(limit)
 	}