move wkt to route and refactor alert decode

backend/migrations/20240609200239_bus_routes.up.sql

@@ -3,5 +3,6 @@ CREATE TABLE IF NOT EXISTS bus_routes (
     long_name VARCHAR NOT NULL,
     short_name VARCHAR NOT NULL,
     color VARCHAR NOT NULL,
-    shuttle BOOLEAN NOT NULL
+    shuttle BOOLEAN NOT NULL,
+    wkt VARCHAR NOT NULL
 );

backend/migrations/20240609200453_bus_stops.up.sql

@@ -14,14 +14,5 @@ CREATE TABLE IF NOT EXISTS bus_route_stops (
     -- can be 1 or 0
     -- each route has two directions with separate stops
     direction INTEGER NOT NULL,
-    geom VARCHAR NOT NULL,
     PRIMARY KEY (route_id, stop_id, stop_sequence)
-);
-
--- CREATE TABLE IF NOT EXISTS bus_stop_groups (
---     route_id VARCHAR REFERENCES bus_routes(id),
---     -- same direction as the route stops
---     direction INTEGER NOT NULL,
---     headsign VARCHAR NOT NULL,
---     PRIMARY KEY (route_id, direction)
--- );
+);

backend/migrations/20240813211652_alerts.down.sql

@@ -0,0 +1,9 @@
+DROP INDEX IF EXISTS idx_active_periods_alert_id_start_time_end_time;
+
+DROP INDEX IF EXISTS idx_affected_entities_alert_id_route_id;
+
+DROP TABLE IF EXISTS affected_entities;
+
+DROP TABLE IF EXISTS active_periods;
+
+DROP TABLE IF EXISTS alerts;

backend/migrations/20240526185042_alerts.up.sql → backend/migrations/20240813211652_alerts.up.sql

@@ -15,16 +15,19 @@ CREATE TABLE IF NOT EXISTS alerts (
 CREATE TABLE IF NOT EXISTS active_periods(
     alert_id UUID NOT NULL REFERENCES alerts(id) ON DELETE CASCADE,
     start_time TIMESTAMP WITH TIME ZONE NOT NULL,
-    end_time TIMESTAMP WITH TIME ZONE
+    end_time TIMESTAMP WITH TIME ZONE,
+    PRIMARY KEY (alert_id, start_time)
 );
 
 CREATE TABLE IF NOT EXISTS affected_entities(
     alert_id UUID NOT NULL REFERENCES alerts(id) ON DELETE CASCADE,
     route_id VARCHAR REFERENCES routes(id),
     stop_id VARCHAR REFERENCES stops(id),
-    sort_order INTEGER NOT NULL
+    bus_route_id VARCHAR REFERENCES bus_routes(id),
+    sort_order INTEGER NOT NULL,
+    UNIQUE (alert_id, route_id, stop_id, bus_route_id)
 );
 
--- CREATE INDEX idx_alerts_id ON alerts (id);
--- CREATE INDEX idx_active_periods_alert_id_start_time_end_time ON active_periods (alert_id, start_time, end_time);
--- CREATE INDEX idx_affected_entities_alert_id_route_id ON affected_entities (alert_id, route_id);
+CREATE INDEX idx_active_periods_alert_id_start_time_end_time ON active_periods (alert_id, start_time, end_time);
+
+CREATE INDEX idx_affected_entities_alert_id_route_id ON affected_entities (alert_id, route_id);