/// <summary>
/// Remover funciona assim:
/// Temos de obter a referencia para o registo e
/// indicar que queremos remover com aquela mesma referencia.
///
/// </summary>
private async void RemoveAssociationBetweenTagAndIssue(TagModel tagModel, int id)
{
var reg = await Context.IssueTagSet.Where(item => item.IssueId == id && item.TagName.Equals(tagModel.Name)).FirstAsync();
Context.IssueTagSet.Remove(reg);
}
public async Task<HttpResponseMessage> AssociationBetweenTagAndIssue(string projectName, int id, [FromBody] string tag)
{
if (tag == null)
{
//lidar com erro
}
//verificar se tag está associada com Projecto ao qual o issue pertence
var tagModel = new TagModel {Name = tag};
if (! await IsTagRelatedToProject(projectName, tagModel))
{
return TagNotRelatedToProjectError("tag");
}
HttpResponseMessage response = null;
//caso contrario, associar/remover conforme o HTTP method
if (Request.Method.Equals(HttpMethod.Post))
{
//cria associação entre ambas
AssociationBetweenTagAndIssue(tagModel, id);
response = Request.CreateResponse(HttpStatusCode.NoContent);
}
else if (Request.Method.Equals(HttpMethod.Delete))
{
//elemina a associação
RemoveAssociationBetweenTagAndIssue(tagModel, id);
//if the resource is immediately removed, the server should return a 200 code
response = Request.CreateResponse(HttpStatusCode.OK);
}
//gravar alterações
await Context.SaveChangesAsync();
return response;
}
private void AssociationBetweenTagAndIssue(TagModel tagModel, int elementIndex)
{
Context.IssueTagSet.Add(new IssueTagSetModel { IssueId = elementIndex, TagName = tagModel.Name });
}
private async Task<bool> IsTagRelatedToProject(string projectName, TagModel tagModel)
{
var isTagPresent =
await Context.ProjectTagSet.AnyAsync(r => r.ProjectName.Equals(projectName) && r.TagName.Equals(tagModel.Name));
return isTagPresent;
}