Ensure Pollination is installed to correct version

[tg359]

Description:

Prior to running the environment installer or any other code within the toolkit, a check should be made to ensure that Pollination is installed, and the version installed is the one that the code has been tested against.

Not sure why I didn't do this sooner, but it would look something like this:

namespace BH.Engine.LadybugTools
{
    public static partial class Query
    {
        [Description("Return True if Pollination is installed to the currently supported version.")]
        [Input("targetPollinationVersion", "The target Pollination build BHoM currently supports.")]
        [Input("includeBuildNumber", "If true, the build number will be included in the comparison.")]
        [Output("bool", "True if Pollination is installed to the currently supported version.")]
        public static bool IsPollinationInstalled(string targetPollinationVersion, bool includeBuildNumber)
        {
            // check if referenced Python is installed
            string referencedExecutable = @"C:\Program Files\ladybug_tools\python\python.exe";
            if (!File.Exists(referencedExecutable))
            {
                Base.Compute.RecordError($"Could not find referenced python executable at {referencedExecutable}. Please install Pollination version {targetPollinationVersion} and try again.");
                return false;
            }

            // obtain version of pollination installed
            string referencedUninstaller = @"C:\Program Files\ladybug_tools\uninstall.exe";
            FileVersionInfo versionInfo = FileVersionInfo.GetVersionInfo(referencedUninstaller);
            if (includeBuildNumber)
            {
                if (versionInfo.ProductVersion != targetPollinationVersion)
                {
                    Base.Compute.RecordError($"Polination version installed ({versionInfo.ProductVersion}) is not the same as the version required for this code to function correctly ({targetPollinationVersion}).");
                    return false;
                }
            }

            // check that version matches the target version
            int major = int.Parse(targetPollinationVersion.Split('.')[0]);
            int minor = int.Parse(targetPollinationVersion.Split('.')[1]);
            if (versionInfo.ProductMajorPart != major || versionInfo.ProductMinorPart != minor)
            {
                if (versionInfo.ProductVersion != targetPollinationVersion)
                {
                    Base.Compute.RecordError($"Polination version installed ({versionInfo.ProductVersion}) is not the same as the version required for this code to function correctly ({targetPollinationVersion}).");
                    return false;
                }
            }

            return true;
        }
    }
}