using JdeScoping.DataSync.Configuration;

namespace JdeScoping.ConfigManager.ViewModels.PipelineSteps;

/// <summary>
/// View model for the destination step in a pipeline.
/// </summary>
public class DestinationStepViewModel : PipelineStepViewModelBase
{
    private readonly DestinationElement _model;

    /// <summary>
    /// Initializes a new instance of the <see cref="DestinationStepViewModel"/> class.
    /// </summary>
    /// <param name="model">The destination configuration model.</param>
    /// <param name="onChanged">Callback invoked when the destination configuration changes.</param>
    public DestinationStepViewModel(DestinationElement model, Action onChanged) : base(onChanged)
    {
        _model = model ?? throw new ArgumentNullException(nameof(model));
    }

    /// <inheritdoc />
    public override PipelineStepType StepType => PipelineStepType.Destination;

    /// <inheritdoc />
    public override string DisplayName => "Destination";

    /// <inheritdoc />
    public override string Icon => "󰆼"; // mdi-database

    /// <inheritdoc />
    public override string Summary => !string.IsNullOrEmpty(Table) ? $"→ {Table}" : "(no table)";

    /// <summary>
    /// Gets or sets the destination table name.
    /// </summary>
    public string Table
    {
        get => _model.Table;
        set
        {
            if (_model.Table != value)
            {
                _model.Table = value ?? string.Empty;
                OnPropertyChanged();
                OnPropertyChanged(nameof(Summary));
                NotifyChanged();
            }
        }
    }

    /// <summary>
    /// Gets or sets the match columns as newline-separated text.
    /// </summary>
    public string MatchColumnsText
    {
        get => string.Join("\n", _model.MatchColumns);
        set
        {
            var columns = (value ?? string.Empty).Split('\n', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries).ToList();
            if (!_model.MatchColumns.SequenceEqual(columns))
            {
                _model.MatchColumns = columns;
                OnPropertyChanged();
                NotifyChanged();
            }
        }
    }

    /// <summary>
    /// Gets or sets the columns to exclude from updates as newline-separated text.
    /// </summary>
    public string ExcludeFromUpdateText
    {
        get => string.Join("\n", _model.ExcludeFromUpdate);
        set
        {
            var columns = (value ?? string.Empty).Split('\n', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries).ToList();
            if (!_model.ExcludeFromUpdate.SequenceEqual(columns))
            {
                _model.ExcludeFromUpdate = columns;
                OnPropertyChanged();
                NotifyChanged();
            }
        }
    }
}