tiPS

0.0.42-ci20230907T231739SHA923bd3c

Classes/PowerShellTip.cs

// Windows PowerShell only supports C# 5.0, so we can't use any newer language features: https://stackoverflow.com/a/40789694/602585
// List of C# versions and features: https://learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-version-history
using System;

namespace tiPS
{
    // Ideally the enum would be in a separate file, but then we have to deal with writing assemblies to disk
    // in order to load PowerShell types from 2 different files, so just define everything in a single file
    // here for now: https://stackoverflow.com/a/20749076/602585
    public enum TipCategory
    {
        Community, // Social events and community resources. e.g. PowerShell Summit, podcasts, etc.
        Editor, // Editor tips and extensions. e.g. VSCode, ISE, etc.
        Module, // Modules and module tips. e.g. PSScriptAnalyzer, Pester, etc.
        Syntax, // Syntax tips. e.g. splatting, pipeline, etc.
        Terminal, // Terminal shortcuts and tips. e.g. PSReadLine, ConEmu, etc.
        Other // Tips that don't fit into any of the above categories.
    }

    public class PowerShellTip
    {
        public DateTime CreatedDate { get; set; }
        public string Title { get; set; }
        public string TipText { get; set; }
        public string Example { get; set; }
        public string[] Urls { get; set; }
        public string MinPowerShellVersion { get; set; } // Use a string because System.Version is not deserialized correctly from JSON, and it's a bit more user friendly when specifying the version.
        public TipCategory Category { get; set; }

        public PowerShellTip()
        {
            CreatedDate = DateTime.MinValue;
            Title = string.Empty;
            TipText = string.Empty;
            Example = string.Empty;
            Urls = Array.Empty<string>();
            MinPowerShellVersion = string.Empty;
            Category = TipCategory.Other;
        }

        public string Id
        {
            get
            {
                string id = CreatedDate.ToString("yyyy-MM-dd-") + Title.ToLower().Replace(" ", "-");
                string idWithoutSpecialCharacters = System.Text.RegularExpressions.Regex.Replace(id, "[^a-zA-Z0-9-]", "");
                return idWithoutSpecialCharacters;
            }
        }

        public bool UrlsAreProvided
        {
            get { return Urls != null && Urls.Length > 0; }
        }

        public bool MinPowerShellVersionIsProvided
        {
            get { return !string.IsNullOrWhiteSpace(MinPowerShellVersion) && MinPowerShellVersion != "0.0"; }
        }

        public void Validate()
        {
            if (CreatedDate == DateTime.MinValue)
            {
                throw new System.ArgumentException("The CreatedDate property must be set.");
            }

            if (string.IsNullOrWhiteSpace(Title))
            {
                throw new System.ArgumentException("The Title property must be set.");
            }

            if (Title.Length > 75)
            {
                throw new System.ArgumentException("The Title property value must be 75 characters or less. The current title's length is " + Title.Length + " characters.");
            }

            if (string.IsNullOrWhiteSpace(TipText))
            {
                throw new System.ArgumentException("The TipText property must be set.");
            }

            if (UrlsAreProvided && Urls.Length > 3)
            {
                throw new System.ArgumentException("You may only provide up to 3 Urls.");
            }

            foreach (var url in Urls)
            {
                if (string.IsNullOrWhiteSpace(url))
                {
                    throw new System.ArgumentException("The Urls property must not contain null or empty values.");
                }

                bool urlStartsWithHttp = url.StartsWith("http://") || url.StartsWith("https://");
                if (!urlStartsWithHttp)
                {
                    throw new System.ArgumentException("The Urls property value '" + url + "' must start with 'http://' or 'https://'.");
                }

                Uri uri;
                bool isValidUrl = Uri.TryCreate(url, UriKind.Absolute, out uri);
                if (!isValidUrl)
                {
                    throw new System.ArgumentException("The Urls property value '" + url + "' is not a valid URL.");
                }
            }

            if (MinPowerShellVersionIsProvided)
            {
                Version version;
                bool isValidVersionNumber = Version.TryParse(MinPowerShellVersion, out version);
                if (!isValidVersionNumber)
                {
                    throw new System.ArgumentException("The MinPowerShellVersion property value '" + MinPowerShellVersion + "' is not a valid version number.");
                }

                if (version == new Version(0, 0) && MinPowerShellVersion != "0.0")
                {
                    throw new System.ArgumentException("To specify that there is no minimum PowerShell version, use a MinPowerShellVersion property value of '0.0' instead of '" + MinPowerShellVersion + "'.");
                }

                if (version.Build > 0 || version.Revision > 0)
                {
                    throw new System.ArgumentException("The MinPowerShellVersion property value should be of the format 'Major.Minor'. The value '" + MinPowerShellVersion + "' is not valid.");
                }
            }
        }
    }
}