Simplify add practice exercise

Author: ErikSchierboom

.github/ISSUE_TEMPLATE/new_exercise.md

@@ -1,6 +1,6 @@
 There is a new exercise, [EXERCISE-NAME](https://github.com/exercism/problem-specifications/blob/master/exercises/EXERCISE-NAME/description.md), which data can be found here: https://github.com/exercism/problem-specifications/tree/master/exercises/EXERCISE-NAME
 
-To implement the `EXERCISE-NAME` exercise, first run the `./add-new-exercise EXERCISE-NAME` script that will create and update the files required for the new exercise. After this script has run, it will have done the following:
+To implement the `EXERCISE-NAME` exercise, first run the `./add-practice-exercise EXERCISE-NAME` script that will create and update the files required for the new exercise. After this script has run, it will have done the following:
 
 - Added a new entry for the exercise to the [config.json](https://github.com/exercism/csharp/blob/master/config.json) file.
 - Created a default generator in the [generator/Generators/Exercise] directory, which is used to automatically convert the [canonical data](https://github.com/exercism/problem-specifications/blob/master/exercises/EXERCISE-NAME/canonical-data.json) to a test file. For more information on how this works, check the [generators docs](https://github.com/exercism/csharp/blob/master/docs/GENERATORS.md).

README.md

@@ -8,17 +8,15 @@ Exercism exercises in C#
 
 Please see the [contributing guide](https://exercism.org/docs/building)
 
-### Adding a new exercise
+### Adding a new practice exercise
 
-To add a new exercise, run the `bin/add-new-exercise.ps1` PowerShell script:
+To add a new exercise, run the `bin/add-practice-exercise.ps1` PowerShell script:
 
 ```shell
-pwsh bin/add-new-exercise.ps1 bob
+pwsh bin/add-practice-exercise.ps1 bob
 ```
 
-This will create all the necessary files and tests for you.
-Then you just need to implement the `Example.cs` file and to check if the generated tests make sense.
-Parameters and examples for running the script can be found in the script file.
+This will add the exercise's files and output what remains to be done.
 
 ## Support
 

bin/add-new-exercise.ps1

@@ -0,0 +1,77 @@
+<#
+.SYNOPSIS
+    Add a new exercise.
+.DESCRIPTION
+    Add the files need to add a new exercise.
+.PARAMETER Exercise
+    The slug of the exercise to add.
+.PARAMETER Author
+    The author of the exercise.
+.PARAMETER Difficulty
+    The difficulty of the exercise on a scale from 1 to 10 (optional, default: 1).
+.EXAMPLE
+    The example below will add the "acronym" exercise
+    PS C:\> ./bin/add-practice-exercise.ps1 acronym
+#>
+
+[CmdletBinding(SupportsShouldProcess)]
+param (
+    [Parameter(Position = 0, Mandatory = $true)][string]$Exercise,
+    [Parameter(Mandatory = $true)][string]$Author,
+    [Parameter()][int]$Difficulty = 1
+)
+
+$ErrorActionPreference = "Stop"
+$PSNativeCommandUseErrorActionPreference = $true
+
+# Use configlet to create the exercise
+& bin/fetch-configlet
+& bin/configlet create --practice-exercise $Exercise --difficulty $Difficulty --author $Author
+
+# Create project
+$exerciseName = (Get-Culture).TextInfo.ToTitleCase($Exercise).Replace("-", "")
+$exerciseDir = "exercises/practice/${Exercise}"
+$project = "${exerciseDir}/${ExerciseName}.csproj"
+& dotnet new xunit --force -lang "C#" --target-framework-override net8.0 -o $exerciseDir -n $ExerciseName
+& dotnet sln exercises/Exercises.sln add $project
+
+# Update project packages
+& dotnet remove $project package coverlet.collector
+& dotnet add $project package Exercism.Tests --version 0.1.0-beta1
+& dotnet add $project package xunit.runner.visualstudio --version 2.4.3
+& dotnet add $project package xunit --version 2.4.1
+& dotnet add $project package Microsoft.NET.Test.Sdk --version 16.8.3
+
+# Remove and update files
+Remove-Item -Path "${exerciseDir}/UnitTest1.cs"
+(Get-Content -Path ".editorconfig") -Replace "\[\*\.cs\]", "[${exerciseName}.cs]" | Set-Content -Path "${exerciseDir}/.editorconfig"
+
+# Add and run generator (this will update the tests file)
+$generator = "generators/Exercises/Generators/${ExerciseName}.cs"
+Add-Content -Path $generator -Value @"
+using System;
+
+using Exercism.CSharp.Output;
+
+namespace Exercism.CSharp.Exercises.Generators;
+
+internal class ${exerciseName} : ExerciseGenerator
+{
+}
+"@
+& dotnet run --project generators --exercise $Exercise
+
+# Output the next steps
+$files = Get-Content "exercises/practice/${Exercise}/.meta/config.json" | ConvertFrom-Json | Select-Object -ExpandProperty files
+Write-Output @"
+Your next steps are:
+- Check the test suite in $($files.test | Join-String -Separator ",")
+  - If the tests need changes, update the '${exerciseName}' class in the '${generator}' file
+    and then run: 'dotnet run --project generators --exercise ${Exercise}'
+- Any test cases you don't implement, mark them in 'exercises/practice/${slug}/.meta/tests.toml' with "include = false"
+- Create the example solution in $($files.example | Join-String -Separator ",")
+- Verify the example solution passes the tests by running 'bin/verify-exercises ${slug}'
+- Create the stub solution in $($files.solution | Join-String -Separator ",")
+- Update the 'difficulty' value for the exercise's entry in the 'config.json' file in the repo's root
+- Validate CI using 'bin/configlet lint' and 'bin/configlet fmt'
+"@