using System;
using System.Collections.Generic;
using System.IO;

namespace Speckle.InterfaceGenerator;

internal static class TextWriterExtensions
{
    public static void WriteJoin<T>(this TextWriter writer, string separator, IEnumerable<T> values)
    {
        writer.WriteJoin(separator, values, (w, x) => w.Write(x));
    }

    public static void WriteJoin<T>(
        this TextWriter writer,
        string separator,
        IEnumerable<T> values,
        Action<TextWriter, T> writeAction
    )
    {
        using var enumerator = values.GetEnumerator();

        if (!enumerator.MoveNext())
        {
            return;
        }

        writeAction(writer, enumerator.Current);

        if (!enumerator.MoveNext())
        {
            return;
        }

        do
        {
            writer.Write(separator);
            writeAction(writer, enumerator.Current);
        } while (enumerator.MoveNext());
    }
}