VersionUpdate.rosi

// set: rosi.waitforexit 1

using Rosi.Core;
using System;
using System.IO;
using System.Threading.Tasks;

class VersionUpdate : IAsyncRosi
{
    const string VersionFile = "Version.txt";

    static async Task UpdateFile(string filePath, string startText, string endText, Version version, int versionFieldCount)
    {
        Log.Info($"Updating { filePath }.");

        var fileContent = await File.ReadAllTextAsync(filePath);

        var startPosition = fileContent.IndexOf(startText) + startText.Length;
        var endPosition = fileContent.IndexOf(endText, startPosition);

        fileContent = $"{ fileContent.Substring(0, startPosition) }{ version.ToString(versionFieldCount) }{ fileContent.Substring(endPosition) }";

        await File.WriteAllTextAsync(filePath, fileContent);
    }

    public async Task<int> Run(IRuntime runtime)
    {
        if(File.Exists(VersionFile))
        {
            var versionText = await File.ReadAllTextAsync(VersionFile);
            Log.Info($"Version in { VersionFile }: { versionText }");
        }
        else
        {
            Log.Warn($"{VersionFile} not found.");
        }

        Log.Write($"Please type the new version.");

        var newVersionText = Console.ReadLine();
        if (string.IsNullOrWhiteSpace(newVersionText))
        {
            Log.Write("Skipping new version.");
            return 1;
        }

        // force all fields
        var newVersion = new Version(newVersionText);
        var major = Math.Max(0, newVersion.Major);
        var minor = Math.Max(0, newVersion.Minor);
        var build = Math.Max(0, newVersion.Build);
        var revision = Math.Max(0, newVersion.Revision);
        newVersion = new Version(major, minor, build, revision);

        Log.Write($"New Version: {newVersion}.");

        await UpdateFile("Runtime/Rosi.Runtime.csproj", "<Version>", "</Version>", newVersion, 3);
        await UpdateFile("Rosi/Rosi.csproj", "<Version>", "</Version>", newVersion, 3);
        await UpdateFile("WindowsSetup/Rosi.wxs", "Version=\"", "\"", newVersion, 4);

        await File.WriteAllTextAsync(VersionFile, newVersion.ToString());

        return 0;
    }
}