private async Task<Guid> getJobId(AddUserJobBindingModel job)
        {
            var existJob = await this.Data.Jobs.All().FirstOrDefaultAsync(j => j.Name == job.Name && j.Company.Name == job.CompanyName);
            Guid newJobId;
            if (existJob == null)
            {
                var existCompany = await this.Data.Companies.All().FirstOrDefaultAsync(c => c.Name == job.CompanyName);
                Guid newCompanyId;
                if (existCompany == null)
                {
                    var newCompany = new Company()
                    {
                        Name = job.CompanyName,
                        CreatedOn = DateTime.Now
                    };

                    this.Data.Companies.Add(newCompany);
                    await this.Data.SaveChangesAsync();
                    newCompanyId = newCompany.Id;
                }
                else
                {
                    newCompanyId = existCompany.Id;
                }

                var newJob = new Job()
                {
                    Name = job.Name,
                    CompanyId = newCompanyId
                };

                this.Data.Jobs.Add(newJob);
                await this.Data.SaveChangesAsync();
                newJobId = newJob.Id;
            }
            else
            {
                newJobId = existJob.Id;
            }
            return newJobId;
        }
        public async Task<IHttpActionResult> PostCompany(CompanyBindingModel model)
        {
            var userId = this.User.Identity.GetUserId();
            if (!this.ModelState.IsValid)
            {
                return this.BadRequest(this.ModelState);
            }
            if (model == null)
            {
                return this.BadRequest("Invalid input data");
            }

            if (userId == null)
            {
                return this.BadRequest("Invalid session token.");
            }

            var company = new Company()
            {
                Name = model.Name,
                CreatedOn = DateTime.Now,
                Email = model.Email,
                OwnerId = userId
            };
            this.Data.Companies.Add(company);
            await this.Data.SaveChangesAsync();

            return this.StatusCode(HttpStatusCode.Created);
        }