public async Task Subscribe(CancellationToken token, Action <long> callback)
{
var operationIdEnumerable = OperationsChannel.Subscribe(token, Settings.Value.RedisConfiguration);
await foreach (var operationId in operationIdEnumerable)
{ // An operation has changed in the backend!
var scopedId = operationId; // foreach loop counters are by ref, not val
callback(scopedId);
}
}
public async Task UpdateObjective(long objectiveId, long operationId, bool solved, CancellationToken token)
{
var obj = await Context.Objectives
.Where(obj => obj.Id == objectiveId)
.SingleAsync(token);
obj.Solved = solved;
await Context.SaveChangesAsync(token);
await OperationsChannel.Publish(operationId, Settings.Value.RedisConfiguration);
}
public async Task CreateOperation(string name, CancellationToken token)
{
Logger.LogDebug($"CreateOperation({name})");
var newOp = new Operation()
{
Name = name
};
Context.Operations.Add(newOp);
await Context.SaveChangesAsync(token);
await OperationsChannel.Publish(newOp.Id, Settings.Value.RedisConfiguration);
}
public async Task CreateObjective(string name, string category, long points, long operationId, CancellationToken token)
{
Logger.LogDebug($"CreateObjective({name}, {category}, {points}, {operationId})");
Context.Objectives
.Add(new Objective()
{
Name = name,
Category = category,
Points = points,
OperationId = operationId,
Visible = true
});
await Context.SaveChangesAsync(token);
await OperationsChannel.Publish(operationId, Settings.Value.RedisConfiguration);
}
public async Task AddFiles(ICollection <IFormFile> files, long id, bool isObjectiveFile, string username, CancellationToken token)
{
long operationId;
List <UploadedFile> dbFiles;
if (isObjectiveFile)
{
var objective = await Context.Objectives
.Where(o => o.Id == id)
.Include(o => o.Files)
.SingleAsync(token);
operationId = objective.OperationId;
dbFiles = objective.Files;
}
else
{
var operation = await Context.Operations
.Where(o => o.Id == id)
.Include(o => o.Files)
.SingleAsync(token);
operationId = id;
dbFiles = operation.Files;
}
foreach (var formFile in files)
{
var uf = new UploadedFile()
{
Filename = formFile.FileName,
Username = username,
Timestamp = DateTime.UtcNow
};
dbFiles.Add(uf);
await Context.SaveChangesAsync(token);
var filePath = $"./Uploads/{uf.Id}";
using var stream = new FileStream(filePath, FileMode.Create);
await formFile.CopyToAsync(stream, token);
}
await OperationsChannel.Publish(operationId, Settings.Value.RedisConfiguration);
}
