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get_user_vehicle.js
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get_user_vehicle.js
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const aws = require('aws-sdk');
let UsersTableName = process.env.dynamodb_users_table_name;
let VehiclesTableName = process.env.dynamodb_vehicles_table_name;
function stagingOverwrite() {
UsersTableName = `Dev_${process.env.dynamodb_users_table_name}`;
VehiclesTableName = `Dev_${process.env.dynamodb_vehicles_table_name}`;
}
const dynamoDB = new aws.DynamoDB.DocumentClient();
async function getUser(userId) {
const params = {
TableName: UsersTableName,
Key: {
user_id: userId
},
ProjectionExpression: 'vehicles'
};
const data = await dynamoDB.get(params).promise();
return data.Item;
}
async function getVehicle(vehicleId) {
const params = {
TableName: VehiclesTableName,
Key: {
vehicle_id: vehicleId
},
ProjectionExpression:
'vehicle_id, vehicle_attributes, vehicle_identifications'
};
const data = await dynamoDB.get(params).promise();
return data.Item;
}
exports.handler = async (event) => { // eslint-disable-line no-unused-vars
if (event.requestContext.stage === 'staging') { stagingOverwrite(); }
const userId = event.requestContext.authorizer.user_id;
const vehicleId = event.pathParameters.vehicle;
const user = await getUser(userId);
const vehicleInUser = user.vehicles.filter((vId) => vId === vehicleId);
if (vehicleInUser) {
const vehicle = await getVehicle(vehicleId);
const response = {
statusCode: 200,
headers: { 'Access-Control-Allow-Origin': '*' },
body: JSON.stringify(vehicle)
};
return response;
}
const response = {
statusCode: 403,
headers: { 'Access-Control-Allow-Origin': '*' },
body: JSON.stringify({ message: 'Forbidden access' })
};
return response;
};