import type { BackendTurnResult, CommandRecord, RunRecord } from "../common/types.js";
import { runCodexStdioTurn, type CodexStdioTurnOptions } from "./codex-stdio.js";

export interface BackendAdapterOptions {
  codexCommand?: string;
  codexArgs?: string[];
  codexHome?: string;
  env?: NodeJS.ProcessEnv;
}

export async function runBackendTurn(run: RunRecord, command: CommandRecord, options: BackendAdapterOptions = {}): Promise<BackendTurnResult> {
  if (run.backendProfile !== "codex") {
    return { terminalStatus: "failed", failureKind: "backend-failed", failureMessage: `unsupported backendProfile ${run.backendProfile}`, events: [{ type: "error", payload: { failureKind: "backend-failed", backendProfile: run.backendProfile } }] };
  }
  const prompt = typeof command.payload.prompt === "string" ? command.payload.prompt : JSON.stringify(command.payload);
  const turnOptions: CodexStdioTurnOptions = {
    prompt,
    cwd: typeof run.workspaceRef.path === "string" ? run.workspaceRef.path : process.cwd(),
    approvalPolicy: run.executionPolicy.approval,
    sandbox: run.executionPolicy.sandbox,
    timeoutMs: run.executionPolicy.timeoutMs,
  };
  if (typeof command.payload.model === "string") turnOptions.model = command.payload.model;
  if (typeof command.payload.threadId === "string") turnOptions.threadId = command.payload.threadId;
  if (options.codexCommand) turnOptions.command = options.codexCommand;
  if (options.codexArgs) turnOptions.args = options.codexArgs;
  if (options.env) turnOptions.env = options.env;
  if (options.codexHome) turnOptions.codexHome = options.codexHome;
  return runCodexStdioTurn(turnOptions);
}