using System;

using System.ComponentModel.DataAnnotations;

using System.Threading.Tasks;

namespace SourceGit.ViewModels

{

public class RenameBranch : Popup

{

public Models.Branch Target

{

get;

}

[Required(ErrorMessage = "Branch name is required!!!")]

[RegularExpression(@"^[\w\-/\.#\+]+$", ErrorMessage = "Bad branch name format!")]

[CustomValidation(typeof(RenameBranch), nameof(ValidateBranchName))]

public string Name

{

get => _name;

set => SetProperty(ref _name, value, true);

}

public RenameBranch(Repository repo, Models.Branch target)

{

_repo = repo;

_name = target.Name;

Target = target;

}

public static ValidationResult ValidateBranchName(string name, ValidationContext ctx)

{

if (ctx.ObjectInstance is RenameBranch rename)

{

foreach (var b in rename._repo.Branches)

{

if (b.IsLocal && b != rename.Target && b.Name.Equals(name, StringComparison.Ordinal))

return new ValidationResult("A branch with same name already exists!!!");

}

}

return ValidationResult.Success;

}

public override async Task<bool> Sure()

{

if (Target.Name.Equals(_name, StringComparison.Ordinal))

return true;

using var lockWatcher = _repo.LockWatcher();

ProgressDescription = $"Rename '{Target.Name}'";

var log = _repo.CreateLog($"Rename Branch '{Target.Name}'");

Use(log);

var isCurrent = Target.IsCurrent;

var oldName = Target.FullName;

var succ = await new Commands.Branch(_repo.FullPath, Target.Name)

.Use(log)

.RenameAsync(_name);

if (succ)

_repo.RefreshAfterRenameBranch(Target, _name);

log.Complete();

return succ;

}

private readonly Repository _repo;

private string _name;

}

}