using System.Management.Automation;

namespace Noz.PowerShell.Cmdlets;

/// <summary>List notes from the noz server.</summary>
/// <example>
///   Get-NozNote
///   Get-NozNote -Topic psychologie
///   Get-NozNote -Status seed -Lang de
///   Get-NozNote | Group-Object Topic | Sort-Object Count -Descending
///   Get-NozNote | Export-Csv ~/notes.csv
/// </example>
[Cmdlet(VerbsCommon.Get, "NozNote")]
[OutputType(typeof(NozNote))]
public sealed class GetNozNoteCmdlet : NozCmdletBase
{
    [Parameter(Position = 0)]
    public string? Topic { get; set; }

    [Parameter]
    [ValidateSet("seed", "budding", "evergreen")]
    public string? Status { get; set; }

    [Parameter]
    [ValidateSet("de", "en")]
    public string? Lang { get; set; }

    protected override void ProcessRecord()
    {
        var notes = Run(Api.GetNotesAsync());

        var filtered = notes.AsEnumerable();

        if (Topic  is not null) filtered = filtered.Where(n => n.Topic  == Topic);
        if (Status is not null) filtered = filtered.Where(n => n.Status == Status);
        if (Lang   is not null) filtered = filtered.Where(n => n.Lang   == Lang);

        foreach (var note in filtered.OrderBy(n => n.Slug))
            WriteObject(NozNote.From(note));
    }
}