/// <summary>
/// Moves a tenant from an apartment and updates the tenants tag.
/// </summary>
/// <param name="tenantOrTagId">Full name of tenant or tenants tag id. </param>
/// <param name="apartmentId">Id of apartment to move in to,
/// or an empty string to simply move out and not into another apartment.</param>
/// <returns>True if operation was successful and changes were saved.</returns>
public static bool MoveTenant(string tenantOrTagId, string apartmentId)
{
using (var context = new LogsContext())
{
try
{
var tenant = context.Tenants
.Where(t => t.Id == tenantOrTagId)
.FirstOrDefault();
var tag = context.Tags
.Include(t => t.Tenant)
.Where(t => t.Id == tenantOrTagId || t.Tenant.Id == tenantOrTagId)
.FirstOrDefault();
if (tenant == null && tag != null)
{
tenant = tag.Tenant;
}
else if (tenant == null && tag == null)
{
// Tenant not found by tenant id or tag id.
return(false);
}
context.Database.BeginTransaction();
try
{
if (apartmentId == "")
{
// Tenant moved out. Remove tenant and tag.
context.Tenants.Remove(tenant);
if (tag != null)
{
context.Tags.Remove(tag);
}
}
else
{
// Tenant moved to another apartment.
// Set tenants new apartment id.
tenant.ApartmentId = apartmentId;
if (tag != null)
{
// Remove old tag if there was one.
context.Tags.Remove(tag);
}
// Set tenants new tag.
context.Add(
new Tag()
{
Tenant = tenant,
TenantId = tenant.Id,
Id = TagHelper.GetNextApartmentTag(apartmentId),
}
);
}
context.SaveChanges();
context.Database.CommitTransaction();
}
catch (Exception)
{
context.Database.RollbackTransaction();
return(false);
}
}
catch (Exception)
{
return(false);
}
}
return(true);
}