✨ Diagnostic Manager

[austincondiff]

Description

Introduce a DiagnosticManager responsible for managing and publishing diagnostics (e.g., build errors, linter warnings, language server issues) grouped by file. This manager will serve as the single source of truth for diagnostics across the editor, and its contents will drive visual components such as the Issue Navigator and Line Annotations.

Requirements

• Create a DiagnosticManager class conforming to ObservableObject
• Store diagnostics as a flat list or grouped by file:

  @Published var issues: [DiagnosticIssue]

• Define a DiagnosticIssue model:

  struct DiagnosticIssue: Identifiable, Hashable {
      let id: UUID = UUID()
      let file: URL
      let line: Int
      let column: Int?
      let message: String
      let severity: Severity
      let source: String?
      let fixItSuggestion: String?
  
      enum Severity {
          case error, warning, info, live
      }
  }

• Add convenience accessors:

  var issuesByFile: [URL: [DiagnosticIssue]]
  func issues(for file: URL) -> [DiagnosticIssue]

• Add a way to update issues by file, e.g.:

  func setIssues(_ issues: [DiagnosticIssue], for file: URL)
  func clearIssues(for file: URL)

Additional Context

This manager will be used by multiple parts of the app, including the Issue Navigator and Line Annotations. It should be reactive and efficient, allowing UI components to automatically update when diagnostics change.

Future extensions may include filtering, debouncing updates, or supporting different diagnostics sources (build system, LSP, etc.).

Related Issues

• ✨ Issue Navigator #354
• ✨ Display Issues as Line Annotations In Source Editor #2015
• ✨ Line Annotations CodeEditSourceEditor#297

[beltradini]

Hi!, could you assign me to work on this one, thank you!

[austincondiff]

I sure can! But we might need to clarify a few things first.

@FastestMolasses has been working on #354 and may be a good resource, but it looks like he has done a few things already in the way of diagnostics in PR #2006. Any insight here?

@Kihron is working on #2015 so he might be good to sync up with as well.

All of you, please include any relevant details here so we can all be on the same page so we don't redo any work or step on each others toes. Thanks!