feat(get_passenger_trips): add get trips as passenger function

get_passenger_trips.js

@@ -0,0 +1,51 @@
+const aws = require('aws-sdk');
+
+// eslint-disable-next-line import/no-absolute-path
+const bearerToUserId = require('/opt/nodejs/bearer_to_user_id.js');
+
+const dynamoDB = new aws.DynamoDB.DocumentClient();
+
+async function getReservations(userId) {
+  const params = {
+    TableName: process.env.dynamodb_reservations_table_name,
+    IndexName: process.env.dynamodb_index_name,
+    KeyConditionExpression: 'passenger_id = :userId',
+    ExpressionAttributeValues: {
+      ':userId': userId
+    }
+  };
+  const data = await dynamoDB.query(params).promise();
+  return data.Items;
+}
+
+async function getTrip(tripId) {
+  const params = {
+    TableName: process.env.dynamodb_trips_table_name,
+    Key: {
+      trip_id: tripId
+    },
+    ProjectionExpression: 'trip_id, route_points, trip_status, etd'
+  };
+  const data = await dynamoDB.get(params).promise();
+  return data.Item;
+}
+
+async function getTrips(reservations) {
+  return Promise.all(
+    reservations.slice(0, 15).map(async (r) => getTrip(r.trip_id))
+  );
+}
+
+exports.handler = async (event) => { // eslint-disable-line no-unused-vars
+  const userId = await bearerToUserId.bearerToUserId(event.headers.Authorization.substring(7));
+
+  const reservations = await getReservations(userId);
+  const allPassengerTrips = await getTrips(reservations);
+
+  const response = {
+    statusCode: 200,
+    headers: { 'Access-Control-Allow-Origin': '*' },
+    body: JSON.stringify(allPassengerTrips)
+  };
+  return response;
+};