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Implement language-specific user tagging functionality for issue #24
- Add CallUsersByLanguageTrigger to handle commands like "! C++" - Support 30+ programming languages with aliases (e.g., JS -> JavaScript) - Search GitHub repositories by language and tag top contributors - Integrate trigger into IssueTracker in Program.cs - Add experimental test script to verify trigger logic The bot now responds to "! <language>" commands by: 1. Validating the programming language 2. Searching for top repositories in that language 3. Finding and mentioning active developers 4. Posting a comment with @mentions to call developers 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]>
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‎csharp/Platform.Bot/Program.cs‎

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@@ -95,7 +95,7 @@ private static async Task<int> Main(string[] args)
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var dbContext = new FileStorage(databaseFilePath?.FullName ?? new TemporaryFile().Filename);
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Console.WriteLine($"Bot has been started. {Environment.NewLine}Press CTRL+C to close");
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var githubStorage = new GitHubStorage(githubUserName, githubApiToken, githubApplicationName);
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var issueTracker = new IssueTracker(githubStorage, new HelloWorldTrigger(githubStorage, dbContext, fileSetName), new OrganizationLastMonthActivityTrigger(githubStorage), new LastCommitActivityTrigger(githubStorage), new AdminAuthorIssueTriggerDecorator(new ProtectDefaultBranchTrigger(githubStorage), githubStorage), new AdminAuthorIssueTriggerDecorator(new ChangeOrganizationRepositoriesDefaultBranchTrigger(githubStorage, dbContext), githubStorage), new AdminAuthorIssueTriggerDecorator(new ChangeOrganizationPullRequestsBaseBranchTrigger(githubStorage, dbContext), githubStorage));
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var issueTracker = new IssueTracker(githubStorage, new HelloWorldTrigger(githubStorage, dbContext, fileSetName), new CallUsersByLanguageTrigger(githubStorage), new OrganizationLastMonthActivityTrigger(githubStorage), new LastCommitActivityTrigger(githubStorage), new AdminAuthorIssueTriggerDecorator(new ProtectDefaultBranchTrigger(githubStorage), githubStorage), new AdminAuthorIssueTriggerDecorator(new ChangeOrganizationRepositoriesDefaultBranchTrigger(githubStorage, dbContext), githubStorage), new AdminAuthorIssueTriggerDecorator(new ChangeOrganizationPullRequestsBaseBranchTrigger(githubStorage, dbContext), githubStorage));
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var pullRequenstTracker = new PullRequestTracker(githubStorage, new MergeDependabotBumpsTrigger(githubStorage));
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var timestampTracker = new DateTimeTracker(githubStorage, new CreateAndSaveOrganizationRepositoriesMigrationTrigger(githubStorage, dbContext, Path.Combine(Directory.GetCurrentDirectory(), "/github-migrations")));
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var cancellation = new CancellationTokenSource();

‎csharp/Platform.Bot/Triggers/CallUsersByLanguageTrigger.cs‎

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using Interfaces;
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using Octokit;
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using Storage.Remote.GitHub;
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namespace Platform.Bot.Triggers
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{
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using TContext = Issue;
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/// <summary>
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/// <para>
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/// Represents the call users by language trigger.
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/// </para>
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/// <para></para>
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/// </summary>
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/// <seealso cref="ITrigger{TContext}"/>
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internal class CallUsersByLanguageTrigger : ITrigger<TContext>
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{
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private readonly GitHubStorage _storage;
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private readonly Dictionary<string, string> _languageMap;
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/// <summary>
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/// <para>
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/// Initializes a new <see cref="CallUsersByLanguageTrigger"/> instance.
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/// </para>
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/// <para></para>
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/// </summary>
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/// <param name="storage">
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/// <para>A git hub api.</para>
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/// <para></para>
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/// </param>
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public CallUsersByLanguageTrigger(GitHubStorage storage)
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{
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_storage = storage;
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_languageMap = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
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{
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{"C++", "C++"},
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{"CPP", "C++"},
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{"C#", "C#"},
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{"CSHARP", "C#"},
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{"C", "C"},
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{"Java", "Java"},
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{"JavaScript", "JavaScript"},
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{"JS", "JavaScript"},
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{"Python", "Python"},
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{"PY", "Python"},
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{"Ruby", "Ruby"},
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{"RB", "Ruby"},
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{"Go", "Go"},
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{"Golang", "Go"},
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{"PHP", "PHP"},
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{"Swift", "Swift"},
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{"Kotlin", "Kotlin"},
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{"Rust", "Rust"},
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{"TypeScript", "TypeScript"},
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{"TS", "TypeScript"},
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{"Scala", "Scala"},
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{"R", "R"},
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{"Dart", "Dart"},
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{"Lua", "Lua"},
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{"Perl", "Perl"},
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{"Haskell", "Haskell"},
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{"Clojure", "Clojure"},
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{"F#", "F#"},
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{"FSHARP", "F#"},
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{"Objective-C", "Objective-C"},
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{"Shell", "Shell"},
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{"PowerShell", "PowerShell"},
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{"HTML", "HTML"},
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{"CSS", "CSS"},
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{"Vim", "Vim script"},
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{"Assembly", "Assembly"},
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{"MATLAB", "MATLAB"},
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{"Groovy", "Groovy"},
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{"Elixir", "Elixir"},
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{"Erlang", "Erlang"},
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{"Julia", "Julia"},
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{"Nim", "Nim"},
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{"Crystal", "Crystal"}
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};
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}
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/// <summary>
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/// <para>
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/// Actions the context.
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/// </para>
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/// <para></para>
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/// </summary>
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/// <param name="context">
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/// <para>The context.</para>
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/// <para></para>
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/// </param>
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public async Task Action(TContext context)
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{
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var languageText = context.Body.Trim().Substring(1).Trim();
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if (!_languageMap.TryGetValue(languageText, out var language))
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{
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await _storage.CreateIssueComment(context.Repository.Id, context.Number,
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$"Sorry, I don't recognize the programming language '{languageText}'. " +
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$"Supported languages include: {string.Join(", ", _languageMap.Keys.Take(10))} and more.");
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return;
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}
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try
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{
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// Search for repositories with the specified language using raw query
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var query = $"language:{language}";
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var repositorySearchRequest = new SearchRepositoriesRequest(query)
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{
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SortField = RepoSearchSort.Stars,
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Order = SortDirection.Descending,
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PerPage = 100
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};
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var repositoryResults = await _storage.Client.Search.SearchRepo(repositorySearchRequest);
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if (!repositoryResults.Items.Any())
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{
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await _storage.CreateIssueComment(context.Repository.Id, context.Number,
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$"No repositories found with {languageText} as the primary language.");
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return;
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}
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// Get unique users from these repositories
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var uniqueUsers = repositoryResults.Items
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.Where(repo => repo.Owner != null)
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.GroupBy(repo => repo.Owner.Login)
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.Select(g => g.First().Owner)
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.Take(10)
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.ToList();
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if (!uniqueUsers.Any())
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{
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await _storage.CreateIssueComment(context.Repository.Id, context.Number,
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$"No users found with {languageText} repositories.");
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return;
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}
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var userMentions = uniqueUsers
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.Select(user => $"@{user.Login}")
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.ToList();
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var message = $"Calling all {languageText} developers! 👋\n\n{string.Join(" ", userMentions)}\n\n" +
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$"Found {uniqueUsers.Count} top {languageText} developers based on repository stars.";
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await _storage.CreateIssueComment(context.Repository.Id, context.Number, message);
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}
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catch (Exception ex)
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{
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await _storage.CreateIssueComment(context.Repository.Id, context.Number,
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$"Sorry, I encountered an error while searching for {languageText} developers: {ex.Message}");
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}
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}
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/// <summary>
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/// <para>
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/// Determines whether this instance condition.
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/// </para>
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/// <para></para>
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/// </summary>
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/// <param name="context">
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/// <para>The context.</para>
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/// <para></para>
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/// </param>
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/// <returns>
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/// <para>The bool</para>
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/// <para></para>
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/// </returns>
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public async Task<bool> Condition(TContext context)
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{
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return !string.IsNullOrEmpty(context.Body) &&
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context.Body.Trim().StartsWith("!") &&
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context.Body.Trim().Length > 1 &&
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context.Body.Trim().Split(' ').Length >= 1;
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}
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}
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}

‎experiments/test_trigger.cs‎

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using System;
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using System.Threading.Tasks;
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using Octokit;
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using Platform.Bot.Triggers;
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namespace TestTrigger
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{
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class Program
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{
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static async Task Main(string[] args)
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{
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// Test trigger condition logic without actual GitHub API calls
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var trigger = new CallUsersByLanguageTrigger(null);
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// Test cases
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var testIssues = new[]
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{
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new { Body = "! C++", Expected = true, Description = "Valid C++ call" },
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new { Body = "! Python", Expected = true, Description = "Valid Python call" },
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new { Body = "!JavaScript", Expected = true, Description = "Valid JavaScript call without space" },
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new { Body = "Hello world", Expected = false, Description = "Regular issue body" },
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new { Body = "!", Expected = false, Description = "Just exclamation mark" },
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new { Body = "", Expected = false, Description = "Empty body" },
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};
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Console.WriteLine("Testing CallUsersByLanguageTrigger conditions:");
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Console.WriteLine("=" + new string('=', 50));
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foreach (var test in testIssues)
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{
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var mockIssue = CreateMockIssue(test.Body);
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var result = await trigger.Condition(mockIssue);
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var status = result == test.Expected ? "✓ PASS" : "✗ FAIL";
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Console.WriteLine($"{status} {test.Description}: '{test.Body}' -> {result} (expected: {test.Expected})");
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}
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}
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static Issue CreateMockIssue(string body)
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{
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// Create a basic mock issue with the given body
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// Note: This is a simplified mock for testing purposes
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return new Issue(
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url: "https://api.github.com/repos/test/test/issues/1",
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htmlUrl: "https://github.com/test/test/issues/1",
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commentsUrl: "https://api.github.com/repos/test/test/issues/1/comments",
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eventsUrl: "https://api.github.com/repos/test/test/issues/1/events",
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number: 1,
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state: ItemState.Open,
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title: "Test Issue",
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body: body,
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user: null,
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labels: null,
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assignee: null,
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assignees: null,
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milestone: null,
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comments: 0,
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pullRequest: null,
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closedAt: null,
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createdAt: DateTimeOffset.Now,
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updatedAt: DateTimeOffset.Now,
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closedBy: null,
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nodeId: "test",
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locked: false,
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repository: null,
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reactions: null,
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activeLockReason: null,
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stateReason: null
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);
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}
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}
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}

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