Class OpencodeTarget

src/installer/targets/opencode.ts:128–187

const FORMATTING = { tabSize: 2, insertSpaces: true, eol: '\n' };

class OpencodeTarget implements AgentTarget {
  readonly id = 'opencode' as const;
  readonly displayName = 'opencode';
  readonly docsUrl = 'https://opencode.ai/docs/config';

  supportsLocation(_loc: Location): boolean {
    return true;
  }

  detect(loc: Location): DetectionResult {
    const file = configPath(loc);
    const config = parseConfig(readConfigText(file));
    const alreadyConfigured = !!config.mcp?.codegraph;
    // Global: the XDG dir is what current opencode creates on first run; the
    // legacy %APPDATA% dir still counts as "opencode present" so a re-install
    // can sweep the stale pre-#535 entry out of it.
    const legacy = legacyWindowsConfigDir();
    const installed = loc === 'global'
      ? fs.existsSync(globalConfigDir()) || (!!legacy && fs.existsSync(legacy))
      : fs.existsSync(file);
    return { installed, alreadyConfigured, configPath: file };
  }

  install(loc: Location, _opts: InstallOptions): WriteResult {
    const files: WriteResult['files'] = [];
    files.push(writeMcpEntry(loc));

    // AGENTS.md gets the short marker-fenced CodeGraph block (#704):
    // subagents and non-MCP harnesses read AGENTS.md but never the MCP
    // initialize instructions. Upsert self-heals a stale pre-#529 block.
    files.push(upsertInstructionsEntry(instructionsPath(loc)));

    // Self-heal a pre-#535 install that wrote to %APPDATA%/opencode —
    // opencode never reads it, so anything of ours there is stale.
    if (loc === 'global') files.push(...cleanupLegacyWindowsState());

    return { files };
  }

  uninstall(loc: Location): WriteResult {
    const files: WriteResult['files'] = [];
    files.push(removeMcpEntryAt(configPath(loc)));
    files.push(removeInstructionsEntry(loc));
    if (loc === 'global') files.push(...cleanupLegacyWindowsState());
    return { files };
  }

  printConfig(loc: Location): string {
    const target = configPath(loc);
    const snippet = JSON.stringify({
      $schema: 'https://opencode.ai/config.json',
      mcp: { codegraph: getOpencodeServerEntry() },
    }, null, 2);
    return `# Add to ${target}\n\n${snippet}\n`;
  }

  describePaths(loc: Location): string[] {
    return [configPath(loc), instructionsPath(loc)];