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

class Program
{
    static void Main()
    {
        var utf8NoBom = new UTF8Encoding(encoderShouldEmitUTF8Identifier: false, throwOnInvalidBytes: false);

        foreach (string path in Directory.EnumerateFiles(@"d:\repos\runtime\src\", "*", SearchOption.AllDirectories))
        {
            string[] lines = File.ReadAllLines(path);

            List<string> result = null;
            if (lines.Length >= 3 &&
                lines[0].Trim() == "// Licensed to the .NET Foundation under one or more agreements." &&
                lines[1].Trim() == "// The .NET Foundation licenses this file to you under the MIT license." &&
                lines[2].Trim() == "// See the LICENSE file in the project root for more information.")
            {
                result = new List<string>(lines);
                result.RemoveAt(2);
            }
            else if (lines.Length >= 2 &&
                lines[0].Trim() == "// Licensed to the .NET Foundation under one or more agreements." &&
                lines[1].Trim() == "// See the LICENSE file in the project root for more information.")
            {
                result = new List<string>(lines);
                result[1] = "// The .NET Foundation licenses this file to you under the MIT license.";
            }

            if (result != null)
            {
                bool bad = false;
                for (int i = 0; i < lines.Length && !bad; i++)
                {
                    foreach (char c in lines[i])
                    {
                        if (c >= 0x80)
                        {
                            Console.WriteLine(path + " @ " + i);
                            bad = true;
                            break;
                        }
                    }
                }


                if (!bad)
                {
                    File.WriteAllLines(path, result, utf8NoBom);
                }
            }
        }
    }
}