#region License Information
/* HeuristicLab 
 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL) 
 * 
 * This file is part of HeuristicLab. 
 * 
 * HeuristicLab is free software: you can redistribute it and/or modify 
 * it under the terms of the GNU General Public License as published by 
 * the Free Software Foundation, either version 3 of the License, or 
 * (at your option) any later version. 
 * 
 * HeuristicLab is distributed in the hope that it will be useful, 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 * GNU General Public License for more details. 
 * 
 * You should have received a copy of the GNU General Public License 
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>. 
 */
#endregion
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace HeuristicLab.Services.Authentication {
  public partial class UserManagement : Form {

    private Application currentApplication;
    private Application selectedApplication;
    private User selectedUser;
    private Role selectedRole;

    private List<Application> applications;
    private List<User> users;
    private List<Role> roles;


    public UserManagement() {
      InitializeComponent();
      Initialize();
    }


    private void Initialize() {
      AuthenticationClient.Instance.Refreshed += new EventHandler(Instance_Refreshed);
      cbxApplications.DataSource = AuthenticationClient.Instance.GetApplications();
    }


    void Instance_Refreshed(object sender, EventArgs e) {

      if (InvokeRequired) {
        Invoke(new EventHandler(Instance_Refreshed), sender, e);
      } else {

        applications = AuthenticationClient.Instance.Applications.ToList();
        dgvApplications.DataSource = applications;

        roles = AuthenticationClient.Instance.Roles.ToList();
        dgvRoles.DataSource = roles;

        users = AuthenticationClient.Instance.Users.ToList();
        dgvUsers.DataSource = users;
      }

    }


    private void RefreshApplications() {
      if (currentApplication != null) {
        AuthenticationClient.Instance.Refresh(currentApplication.Id);
      }
    }



    private void RefreshUsersAndRoles() {


      if (currentApplication != null) {
        AuthenticationClient.Instance.Refresh(currentApplication.Id);
      }
    }



    private void cbxApplications_SelectedIndexChanged(object sender, EventArgs e) {
      this.currentApplication = (HeuristicLab.Services.Authentication.Application)cbxApplications.SelectedItem;
      if (currentApplication != null) {
        AuthenticationClient.Instance.Refresh(currentApplication.Id);
      }
    }




    private void dgvApplications_SelectionChanged(object sender, EventArgs e) {
      if (dgvApplications.SelectedRows.Count > 0) {
        selectedApplication = (HeuristicLab.Services.Authentication.Application)dgvApplications.SelectedRows[0].DataBoundItem;

        if (selectedApplication != null) {
          tbApplicationName.Text = selectedApplication.Name;
          tbApplicationDescription.Text = selectedApplication.Description;
          selectedApplication.PropertyChanged += new PropertyChangedEventHandler(selectedApplication_PropertyChanged);
        }
      }
    }



    void selectedApplication_PropertyChanged(object sender, PropertyChangedEventArgs e) {
      if (selectedApplication.Modified) {
        tssApplicationStatus.Text = "modified";
      } else {
        tssApplicationStatus.Text = "";
      }
    }




    private void dgvUsers_SelectionChanged(object sender, EventArgs e) {
      if (dgvUsers.SelectedRows.Count > 0) {
        selectedUser = (HeuristicLab.Services.Authentication.User)dgvUsers.SelectedRows[0].DataBoundItem;

        if (selectedUser != null) {
          tbUserComment.Text = selectedUser.Description;
          tbUserEmail.Text = selectedUser.Email;
          tbUserName.Text = selectedUser.Name;
          selectedUser.PropertyChanged += new PropertyChangedEventHandler(selectedUser_PropertyChanged);
          RefreshUserRolesList();
        }
        RefreshUserRolesList();
      }
    }

    void selectedUser_PropertyChanged(object sender, PropertyChangedEventArgs e) {
      if (selectedUser.Modified) {
        tssStatusUser.Text = "modified";
      } else {
        tssStatusUser.Text = "";
      }
    }



    private void dgvRoles_SelectionChanged(object sender, EventArgs e) {
      if (dgvRoles.SelectedRows.Count > 0) {
        selectedRole = (HeuristicLab.Services.Authentication.Role)dgvRoles.SelectedRows[0].DataBoundItem;

        if (selectedRole != null) {
          tbRoleName.Text = selectedRole.Name;
          tbRoleDescription.Text = selectedRole.Description;
          selectedRole.PropertyChanged += new PropertyChangedEventHandler(selectedRole_PropertyChanged);
        }

        RefreshRoleUsersList();
      }
    }

    void selectedRole_PropertyChanged(object sender, PropertyChangedEventArgs e) {
      if (selectedRole.Modified) {
        tssStatusRole.Text = "modified";
      } else {
        tssStatusRole.Text = "";
      }
    }



    private void RefreshUserRolesList() {
      IEnumerable<Guid> guidList = AuthenticationClient.Instance.GetRolesForUser(selectedUser.Id);
      List<Role> rolesForUser = new List<Role>();
      if (guidList != null) {
        foreach (Guid g in guidList) {
          rolesForUser.Add(AuthenticationClient.Instance.GetRole(g));
        }
      }
      dgvUserRoles.DataSource = rolesForUser;
      dgvUserRolesAll.DataSource = AuthenticationClient.Instance.Roles;

    }



    private void RefreshRoleUsersList() {

      IEnumerable<Guid> guidList = AuthenticationClient.Instance.GetUsersInRole(selectedRole.Id);

      List<User> usersForRole = new List<User>();

      if (guidList != null) {
        foreach (Guid g in guidList) {
          usersForRole.Add(AuthenticationClient.Instance.GetUser(g));
        }
      }

      dgvRoleUsers.DataSource = usersForRole;
      dgvRoleUsersAll.DataSource = AuthenticationClient.Instance.Users;
    }


    private void tbApplicationName_TextChanged(object sender, EventArgs e) {
      if (selectedApplication != null) {
        selectedApplication.Name = tbApplicationName.Text;
      }
    }

    private void tbApplicationDescription_TextChanged(object sender, EventArgs e) {
      if (selectedApplication != null) {
        selectedApplication.Description = tbApplicationDescription.Text;
      }
    }

    private void tbRoleName_TextChanged(object sender, EventArgs e) {
      if (selectedRole != null) {
        selectedRole.Name = tbRoleName.Text;
      }
    }

    private void tbRoleDescription_TextChanged(object sender, EventArgs e) {
      if (selectedRole != null) {
        selectedRole.Description = tbRoleDescription.Text;
      }
    }

    private void tbUserComment_TextChanged(object sender, EventArgs e) {
      if (selectedUser != null) {
        selectedUser.Description = tbUserComment.Text;
      }
    }

    private void tbUserName_TextChanged(object sender, EventArgs e) {
      if (selectedUser != null) {
        selectedUser.Name = tbUserName.Text;
      }
    }

    private void tbUserEmail_TextChanged(object sender, EventArgs e) {
      if (selectedUser != null) {
        selectedUser.Email = tbUserEmail.Text;
      }
    }


    private void tspNewApplication_Click(object sender, EventArgs e) {
      selectedApplication = new Application();
      tbApplicationDescription.Text = "";
      tbApplicationName.Text = "";
    }

    private void tspDeleteApplication_Click(object sender, EventArgs e) {
      if (this.dgvApplications.SelectedRows.Count > 0) {
        selectedApplication = (HeuristicLab.Services.Authentication.Application)this.dgvApplications.SelectedRows[0].DataBoundItem;
        if (selectedApplication != null) {
          AuthenticationClient.Instance.Applications.Remove(selectedApplication);
          RefreshApplications();
        }
      }
    }

    private void tspSaveApplication_Click(object sender, EventArgs e) {
      if (selectedApplication != null) {
        selectedApplication.Store();
        if (currentApplication != null) {
          AuthenticationClient.Instance.Refresh(currentApplication.Id);
        }
      }

    }

    private void tsbNewUser_Click(object sender, EventArgs e) {
      selectedUser = new User();
      selectedUser.ApplicationId = currentApplication.Id;
      selectedUser.CreateDate = DateTime.Now;
      selectedUser.LastActivityDate = DateTime.Now;
      selectedUser.LastLoginDate = DateTime.Now;
      selectedUser.LastLockoutDate = DateTime.Now;
      selectedUser.LastPasswordChangeDate = DateTime.Now;

      tbUserComment.Text = "";
      tbUserEmail.Text = "";
      tbUserName.Text = "";
    }

    private void tsbDeleteUser_Click(object sender, EventArgs e) {
      if (this.dgvUsers.SelectedRows.Count > 0) {
        selectedUser = (HeuristicLab.Services.Authentication.User)this.dgvUsers.SelectedRows[0].DataBoundItem;
        if (selectedUser != null) {
          AuthenticationClient.Instance.Users.Remove(selectedUser);
          RefreshUsersAndRoles();
        }
      }
    }

    private void tsbSaveUser_Click(object sender, EventArgs e) {
      if (selectedUser != null) {
        selectedUser.Store();
        if (currentApplication != null) {
          AuthenticationClient.Instance.Refresh(currentApplication.Id);
        }
      }
    }

    private void tsbRemoveRoleFromUser_Click(object sender, EventArgs e) {
      if (this.dgvUserRoles.SelectedRows.Count > 0) {

        HeuristicLab.Services.Authentication.Role role = (HeuristicLab.Services.Authentication.Role)this.dgvUserRoles.SelectedRows[0].DataBoundItem;
        if (role != null) {
          AuthenticationClient.Instance.RemoveUserFromRole(role.Id, selectedUser.Id);
          RefreshUserRolesList();
        }
      }
    }

    private void tsbAddRoleToUser_Click(object sender, EventArgs e) {
      if (this.dgvUserRolesAll.SelectedRows.Count > 0) {
        HeuristicLab.Services.Authentication.Role role = (HeuristicLab.Services.Authentication.Role)this.dgvUserRolesAll.SelectedRows[0].DataBoundItem;
        if (role != null) {
          if (!AuthenticationClient.Instance.IsUserInRole(selectedUser.Id, role.Id)) {
            AuthenticationClient.Instance.AddUserToRole(role.Id, selectedUser.Id);
            RefreshUserRolesList();
          }
        }
      }
    }

    private void tspNewRole_Click(object sender, EventArgs e) {
      selectedRole = new Role();
      selectedRole.ApplicationId = currentApplication.Id;
      tbRoleDescription.Text = "";
      tbRoleName.Text = "";
    }


    private void tsbDeleteRole_Click(object sender, EventArgs e) {
      if (this.dgvRoles.SelectedRows.Count > 0) {
        selectedRole = (HeuristicLab.Services.Authentication.Role)this.dgvRoles.SelectedRows[0].DataBoundItem;
        if (selectedRole != null) {
          AuthenticationClient.Instance.Roles.Remove(selectedRole);
          RefreshUsersAndRoles();
        }
      }
    }


    private void tsbSaveRole_Click(object sender, EventArgs e) {
      if (selectedRole != null) {
        selectedRole.Store();
        if (currentApplication != null) {
          AuthenticationClient.Instance.Refresh(currentApplication.Id);
        }
      }
    }

    private void tsbRemoveUserFromRole_Click(object sender, EventArgs e) {
      if (this.dgvRoleUsers.SelectedRows.Count > 0) {

        HeuristicLab.Services.Authentication.User user = (HeuristicLab.Services.Authentication.User)this.dgvRoleUsers.SelectedRows[0].DataBoundItem;
        if (user != null) {
          AuthenticationClient.Instance.RemoveUserFromRole(selectedRole.Id, user.Id);
          RefreshRoleUsersList();
        }
      }
    }

    private void tsbAddUserToRole_Click(object sender, EventArgs e) {
      if (this.dgvRoleUsersAll.SelectedRows.Count > 0) {
        HeuristicLab.Services.Authentication.User user = (HeuristicLab.Services.Authentication.User)this.dgvRoleUsersAll.SelectedRows[0].DataBoundItem;
        if (user != null) {
          if (!AuthenticationClient.Instance.IsUserInRole(user.Id, selectedRole.Id)) {
            AuthenticationClient.Instance.AddUserToRole(selectedRole.Id, user.Id);
            RefreshRoleUsersList();
          }
        }
      }
    }


    private void btnResetPassword_Click(object sender, EventArgs e) {

      string applicationName = currentApplication.Name;
      string userName = selectedUser.Name;
      string password = tbPassword.Text;

      AuthenticationClient.Instance.ResetPassword(applicationName, userName, password);
    }
  }
}