Function writeAiConfig

src/workspaces/adapters/opencode.ts:135–181

(cwd: string, cred: WorkspaceAiCred)

  },

  async writeAiConfig(cwd: string, cred: WorkspaceAiCred): Promise<void> {
    const hasProvider = !!(cred.baseUrl || cred.apiKey || cred.model);
    if (!hasProvider) {
      // Reset: delete the workspace opencode.json so opencode falls back to its
      // global auth/config. No empty stub left behind.
      await rm(join(cwd, OPENCODE_CONFIG_PATH), { force: true });
      return;
    }

    const options: Record<string, string> = {};
    if (cred.baseUrl) options['baseURL'] = cred.baseUrl;
    if (cred.apiKey) options['apiKey'] = cred.apiKey;

    // The @ai-sdk package opencode loads depends on the wire shape (all bundled):
    // anthropic → @ai-sdk/anthropic, OpenAI Responses → @ai-sdk/openai, and
    // OpenAI Chat Completions (the default — CN/local gateways) → the
    // openai-compatible SDK.
    const npm = cred.wireShape === 'anthropic' ? '@ai-sdk/anthropic'
      : cred.wireShape === 'openai-responses' ? '@ai-sdk/openai'
      : OPENCODE_SDK_NPM;
    const provider: Record<string, unknown> = {
      npm,
      name: 'OpenAlice workspace provider',
      options,
    };
    if (cred.model) {
      const model: Record<string, unknown> = { name: cred.model };
      const contextWindow = positiveNumber(cred.contextWindow);
      if (contextWindow !== null) {
        // opencode treats missing custom-model limits as 0, which disables its
        // proactive context tracking. Supplying both fields satisfies its config
        // schema while keeping output conservative and invisible in OpenAlice UI.
        model['limit'] = { context: contextWindow, output: DEFAULT_OUTPUT_TOKENS };
      }
      provider['models'] = { [cred.model]: model };
    }

    const config: Record<string, unknown> = {
      $schema: 'https://opencode.ai/config.json',
      provider: { [OPENCODE_PROVIDER_NAME]: provider },
    };
    // Top-level default model is "<provider>/<id>" so opencode resolves the
    // workspace provider without a UI model picker.
    if (cred.model) config['model'] = `${OPENCODE_PROVIDER_NAME}/${cred.model}`;

    await writeWorkspaceFile(cwd, OPENCODE_CONFIG_PATH, JSON.stringify(config, null, 2) + '\n');
  },

  async readAiConfig(cwd: string): Promise<WorkspaceAiCred | null> {
    const raw = await readWorkspaceFile(cwd, OPENCODE_CONFIG_PATH);