4 files changed, 143 insertions, 0 deletions
diff --git a/src/db/rest/like/api_like.sql b/src/db/rest/like/api_like.sql
new file mode 100644
index 0000000..6588b43
--- /dev/null
+++ b/src/db/rest/like/api_like.sql
@@ -0,0 +1,16 @@
+CREATE VIEW api.like AS
+	SELECT
+		l.id,
+		l.user_id,
+		l.post_id,
+		l.comment_id,
+		l.value,
+		l.created,
+		l.modified
+	FROM
+		admin.like l;
+
+GRANT SELECT ON TABLE api.like
+	TO rest_anon, rest_user;
+GRANT SELECT ON TABLE admin.like
+	TO rest_anon, rest_user;
diff --git a/src/db/rest/like/api_like_delete.sql b/src/db/rest/like/api_like_delete.sql
new file mode 100644
index 0000000..7209a40
--- /dev/null
+++ b/src/db/rest/like/api_like_delete.sql
@@ -0,0 +1,32 @@
+CREATE FUNCTION _api.like_delete()
+RETURNS TRIGGER
+LANGUAGE plpgsql VOLATILE
+AS $BODY$
+DECLARE
+	_user_id INTEGER;
+BEGIN
+	_user_id = _api.get_user_id();
+
+	IF OLD.user_id <> _user_id THEN
+		PERFORM _api.raise_deny();
+	END IF;
+
+	UPDATE admin.like SET
+		value = FALSE,
+		modified = clock_timestamp()
+		WHERE id = OLD.id;
+END
+$BODY$;
+
+GRANT EXECUTE ON FUNCTION _api.like_delete()
+	TO rest_user;
+GRANT DELETE ON TABLE api.like
+	TO rest_user;
+GRANT UPDATE ON TABLE admin.like
+	TO rest_user;
+
+CREATE TRIGGER api_like_delete_trgr
+	INSTEAD OF DELETE
+			ON api.like
+			FOR EACH ROW
+				EXECUTE PROCEDURE _api.like_delete();
diff --git a/src/db/rest/like/api_like_insert.sql b/src/db/rest/like/api_like_insert.sql
new file mode 100644
index 0000000..a02ad4e
--- /dev/null
+++ b/src/db/rest/like/api_like_insert.sql
@@ -0,0 +1,51 @@
+CREATE FUNCTION _api.like_insert()
+RETURNS TRIGGER
+LANGUAGE plpgsql VOLATILE
+AS $BODY$
+DECLARE
+	_user_id INTEGER;
+BEGIN
+	_user_id = _api.get_user_id();
+
+	IF
+		NEW.post_id IS NULL AND
+		NEW.comment_id IS NULL
+	THEN
+		-- for now
+		PERFORM _api.raise_deny();
+	END IF;
+
+	NEW.value := COALESCE(NEW.value, TRUE);
+
+	INSERT INTO admin.like (
+		user_id,
+		post_id,
+		comment_id,
+		value
+	) VALUES (
+		_user_id,
+		NEW.post_id,
+		NEW.comment_id,
+		NEW.value
+	)
+	RETURNING id
+	INTO NEW.id;
+
+	RETURN NEW;
+END
+$BODY$;
+
+GRANT EXECUTE ON FUNCTION _api.like_insert()
+	TO rest_user;
+GRANT INSERT ON TABLE api.like
+	TO rest_user;
+GRANT INSERT ON TABLE admin.like
+	TO rest_user;
+GRANT UPDATE ON TABLE sys.like_id_seq
+	TO rest_user;
+
+CREATE TRIGGER api_like_insert_trgr
+	INSTEAD OF INSERT
+			ON api.like
+			FOR EACH ROW
+				EXECUTE PROCEDURE _api.like_insert();
diff --git a/src/db/rest/like/api_like_update.sql b/src/db/rest/like/api_like_update.sql
new file mode 100644
index 0000000..76db73a
--- /dev/null
+++ b/src/db/rest/like/api_like_update.sql
@@ -0,0 +1,44 @@
+CREATE FUNCTION _api.like_update()
+RETURNS TRIGGER
+LANGUAGE plpgsql VOLATILE
+AS $BODY$
+DECLARE
+	_user_id INTEGER;
+	_changed BOOLEAN;
+BEGIN
+	_user_id = _api.get_user_id();
+	_changed = FALSE;
+
+	IF OLD.user_id <> _user_id THEN
+		PERFORM _api.raise_deny();
+	END IF;
+
+	NEW.value = COALESCE(NEW.value, OLD.value);
+
+	IF NEW.value IS DISTINCT FROM OLD.value THEN
+		_changed = TRUE;
+	END IF;
+
+	IF _changed THEN
+		UPDATE admin.like SET
+			value = NEW.value,
+			modified = clock_timestamp()
+			WHERE id = OLD.id;
+	END IF;
+
+	RETURN NEW;
+END
+$BODY$;
+
+GRANT EXECUTE ON FUNCTION _api.like_update()
+	TO rest_user;
+GRANT UPDATE ON TABLE api.like
+	TO rest_user;
+GRANT UPDATE ON TABLE admin.like
+	TO rest_user;
+
+CREATE TRIGGER api_like_update_trgr
+	INSTEAD OF UPDATE
+			ON api.like
+			FOR EACH ROW
+				EXECUTE PROCEDURE _api.like_update();