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ACSCallingNativeDeviceTokenRegistrar.cs
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ACSCallingNativeDeviceTokenRegistrar.cs
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using System.Net;
using Microsoft.Azure.Functions.Worker;
using Microsoft.Azure.Functions.Worker.Http;
using Microsoft.Extensions.Logging;
using ACSCallingNativeRegistrarLite.Utilities;
using static System.Web.HttpUtility;
using ACSCallingNativeRegistrarLite.Models;
using MongoDB.Bson;
using MongoDB.Driver;
using Newtonsoft.Json;
using MongoDB.Driver.Linq;
namespace ACSCallingNativeRegistrarLite.Functions
{
public class ACSCallingNativeDeviceTokenRegistrar
{
private readonly ILogger logger;
public ACSCallingNativeDeviceTokenRegistrar(ILoggerFactory loggerFactory)
{
logger = loggerFactory.CreateLogger<ACSCallingNativeDeviceTokenRegistrar>();
}
[Function("AddDeviceToken")]
public async Task<HttpResponseData> AddDeviceToken([HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = "add_device_token")] HttpRequestData req)
{
logger.LogInformation("Adding device token.");
var requestBodyParser = new RequestBodyParser<ACSUserRegistrationInfo>();
var registrationInfoFromBody = await requestBodyParser.Read(req);
if (registrationInfoFromBody == null)
{
logger.LogError("Failed to parse body");
return Helpers.CreateResponseData(req, HttpStatusCode.BadRequest, "Could not parse body to ACSUserRegistrationInfo");
}
if (registrationInfoFromBody.deviceInfos!.Count != 1)
{
return Helpers.CreateResponseData(req, HttpStatusCode.BadRequest, "Device tokens list is either 0 or more than 1");
}
if (!Enum.TryParse(registrationInfoFromBody.deviceInfos.First().platform, out Platform platform))
{
return Helpers.CreateResponseData(req, HttpStatusCode.BadRequest, "No platform provided");
}
if (platform == Platform.none)
{
return Helpers.CreateResponseData(req, HttpStatusCode.BadRequest, "Invalid platform provided");
}
using (var dbOps = new DbOps<ACSUserRegistrationInfo>(logger))
{
logger.LogInformation("MongoDb connection opened..");
FilterDefinition<ACSUserRegistrationInfo> filter = new BsonDocument("_id", registrationInfoFromBody._id);
// First fetch the entry if it exists
var acsUserRegistrationInfos = await dbOps.FindAsync(filter)!.ConfigureAwait(false);
if (acsUserRegistrationInfos.Count == 0)
{
logger.LogInformation("Registration info not found, creating a new entry.");
bool result = await dbOps.CreateAsync(registrationInfoFromBody).ConfigureAwait(false);
if (result)
{
logger.LogInformation("Added");
return Helpers.CreateResponseData(req, HttpStatusCode.Created, "Successfully created the entry for the user");
}
else
{
logger.LogInformation("Failed to create new entry");
return Helpers.CreateResponseData(req, HttpStatusCode.InternalServerError, "Failed to add device token for the user");
}
}
else if (acsUserRegistrationInfos.Count == 1)
{
var acsUserRegistrationInfo = acsUserRegistrationInfos.FirstOrDefault();
if (acsUserRegistrationInfo == null)
{
return Helpers.CreateResponseData(req, HttpStatusCode.InternalServerError, "Could not find the entry");
}
bool deviceUUIDExists = acsUserRegistrationInfo.deviceInfos!.Any(e => e.deviceUUID!.Equals(registrationInfoFromBody.deviceInfos.First().deviceUUID));
UpdateDefinition<ACSUserRegistrationInfo> update;
if (deviceUUIDExists)
{
filter &= Builders<ACSUserRegistrationInfo>.Filter.ElemMatch(x => x.deviceInfos, y => y.deviceUUID!.Equals(registrationInfoFromBody.deviceInfos.First().deviceUUID));
update = Builders<ACSUserRegistrationInfo>.Update.Set(e => e.deviceInfos.FirstMatchingElement().deviceToken, registrationInfoFromBody.deviceInfos.First().deviceToken);
}
else
{
update = Builders<ACSUserRegistrationInfo>.Update.PushEach(e => e.deviceInfos, registrationInfoFromBody.deviceInfos);
}
bool result = await dbOps.FindOneAndUpdateAsync(filter, update).ConfigureAwait(false);
if (result)
{
logger.LogInformation("Updated");
return Helpers.CreateResponseData(req, HttpStatusCode.Created, "Successfully created added the device token for the user");
}
else
{
logger.LogInformation("Failed to update entry");
return Helpers.CreateResponseData(req, HttpStatusCode.InternalServerError, "Failed to update device token for the user");
}
}
}
return Helpers.CreateResponseData(req, HttpStatusCode.InternalServerError, "!! AddDeviceToken => Unexpected error !!");
}
// NOTE: Not required by the apps.
[Function("GetDeviceRegistrations")]
public async Task<HttpResponseData> GetDeviceRegistrations([HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "get_device_registrations")] HttpRequestData req)
{
logger.LogInformation("Getting device registrations..");
var mri = ParseQueryString(req.Url.Query)["acsMri"];
if (string.IsNullOrEmpty(mri))
{
logger.LogError("Could not find MRI in the query");
return Helpers.CreateResponseData(req, HttpStatusCode.BadRequest, "Could not find acsMri field in the url query");
}
using var dbOps = new DbOps<ACSUserRegistrationInfo>(logger);
var userRegistrationInfo = await Helpers.GetUserRegistrationInfo(dbOps, mri);
if (userRegistrationInfo == null)
{
return Helpers.CreateResponseData(req, HttpStatusCode.NotFound, "No user registration info found");
}
else
{
return Helpers.CreateResponseData(req, HttpStatusCode.OK, JsonConvert.SerializeObject(userRegistrationInfo));
}
}
// To be called instead of unregisterPushNotifications
[Function("DeleteDeviceRegistration")]
public async Task<HttpResponseData> DeleteDeviceRegistration([HttpTrigger(AuthorizationLevel.Anonymous, "delete", Route = "delete_device_registration")] HttpRequestData req)
{
logger.LogInformation("Getting device uuid..");
var deviceUUID = ParseQueryString(req.Url.Query)["deviceUUID"];
var mri = ParseQueryString(req.Url.Query)["acsMri"];
if (string.IsNullOrEmpty(deviceUUID) || string.IsNullOrEmpty(mri))
{
logger.LogError("Could not find deviceUUID or mri in the query");
return Helpers.CreateResponseData(req, HttpStatusCode.BadRequest, "Could not find deviceUUID or mri field in the url query");
}
using (var dbOps = new DbOps<ACSUserRegistrationInfo>(logger))
{
FilterDefinition<ACSUserRegistrationInfo> filter = new BsonDocument("_id", mri);
var acsUserRegistrationInfos = await dbOps.FindAsync(filter)!.ConfigureAwait(false);
if (acsUserRegistrationInfos.Count == 0)
{
return Helpers.CreateResponseData(req, HttpStatusCode.BadRequest, "Could not find entry for the mri");
}
else if (acsUserRegistrationInfos.Count == 1)
{
var acsRegistrationInfo = acsUserRegistrationInfos.First();
if (acsRegistrationInfo == null)
{
return Helpers.CreateResponseData(req, HttpStatusCode.InternalServerError, "Unexpected to find empty entry");
}
if (acsRegistrationInfo.deviceInfos == null)
{
return Helpers.CreateResponseData(req, HttpStatusCode.BadRequest, "No devices or tokens registered");
}
var allDeviceUUIDs = acsRegistrationInfo.deviceInfos.Select(kvp => kvp.deviceUUID).ToList();
if (allDeviceUUIDs.Contains(deviceUUID))
{
bool result = false;
if (acsRegistrationInfo.deviceInfos.Count == 1)
{
// there is only one entry delete the entire document
result = await dbOps.DeleteOneAsync(filter);
}
else
{
var update = Builders<ACSUserRegistrationInfo>.Update.PullFilter(e => e.deviceInfos, z => z.deviceUUID!.Equals(deviceUUID));
result = await dbOps.FindOneAndUpdateAsync(filter, update);
}
if (result)
{
return Helpers.CreateResponseData(req, HttpStatusCode.OK, "Removed the deviceUUID");
}
else
{
return Helpers.CreateResponseData(req, HttpStatusCode.InternalServerError, "Failed to remove the entry");
}
}
}
else
{
return Helpers.CreateResponseData(req, HttpStatusCode.InternalServerError, "Unexpected found more than 1 entry.");
}
}
return Helpers.CreateResponseData(req, HttpStatusCode.InternalServerError, "!! DeleteDeviceRegistration => Unexpected error!!");
}
}
}