resolveAiWiring function

Future<({AiConfig config, HubHttpClient httpClient})?> resolveAiWiring({ required SettingsStore settings, required OmnyShellService service, })

Resolves the AI provider config and the Hub-routed HTTP client for the connected session, mirroring :ai's precedence:

• Custom key — when the user opted out of the Hub default and supplied an API key, it is forwarded verbatim (HttpProxyCredentialMode.none).
• Hub default — otherwise the Hub's configured provider/model is used and the Hub injects its key (HttpProxyCredentialMode.hubDefault).

Returns null when no provider is configured (custom key absent and the Hub advertises no default) or on any failure — callers then treat AI as unavailable (a stub :ai, or the :ide agent panel showing setup help). Shared by registerAiCommand and the :ide command so both wire the agent identically.

Implementation

Future<({AiConfig config, HubHttpClient httpClient})?> resolveAiWiring({
  required SettingsStore settings,
  required OmnyShellService service,
}) async {
  try {
    final customKey = settings.aiApiKey;
    if (!settings.aiUseHubDefault &&
        customKey != null &&
        customKey.isNotEmpty) {
      final provider =
          AiProviderKind.tryParse(settings.aiProvider) ??
          AiProviderKind.anthropic;
      final config = AiConfig(
        provider: provider,
        model: settings.aiModel ?? defaultModelFor(provider),
        apiKey: customKey,
        defaultMode: AgentMode.tryParse(settings.aiMode) ?? AgentMode.plan,
        language: settings.aiLanguage,
      );
      return (config: config, httpClient: HubHttpClient(service.client));
    }

    // Don't let a silent/slow Hub stall session open; fall back to no provider.
    final hub = await service.fetchHubAiConfig().timeout(
      const Duration(seconds: 8),
    );
    final providerToken = hub.provider;
    if (!hub.available || providerToken == null) return null;
    final provider =
        AiProviderKind.tryParse(providerToken) ?? AiProviderKind.anthropic;
    final config = AiConfig(
      // Hub default means the Hub's provider *and* model; a stale custom model
      // (set then switched back to Hub default) must not leak in here.
      model: hub.model ?? defaultModelFor(provider),
      provider: provider,
      apiKey: '', // injected Hub-side
      plannerModel: hub.plannerModel,
      executorModel: hub.executorModel,
      explainerModel: hub.explainerModel,
      baseUrl: hub.baseUrl,
      defaultMode:
          AgentMode.tryParse(settings.aiMode ?? hub.mode) ?? AgentMode.plan,
      language: settings.aiLanguage ?? hub.language,
    );
    return (
      config: config,
      httpClient: HubHttpClient(
        service.client,
        credentialMode: HttpProxyCredentialMode.hubDefault,
        provider: provider.wireName,
      ),
    );
  } on Object {
    return null;
  }
}