import { logger } from 'ee-core/log';
import {
  listAllArtifacts,
  listArtifacts,
  openArtifact,
  openArtifactRoot,
  readArtifactBase64,
  readArtifactText,
  revealArtifact,
  saveArtifactAs,
} from '../service/codex/codexArtifactService';
import { asMessage, fail, ok, type Rpc } from '../service/codex/types';

/**
 * 产物（会话工作目录里的文件）读写控制器。
 *
 * 与 codexCtl 同为 ee-core 自动注册的 controller，通道前缀是 controller/codexArtifactCtl/。
 * 这里只做参数校验与异常包装，安全边界（root 白名单 + 路径穿越校验）在 service 里。
 */

async function guard<T>(label: string, run: () => Promise<T>): Promise<Rpc<T>> {
  try {
    return ok(await run());
  } catch (error) {
    const message = asMessage(error);
    logger.error(`[codexArtifactCtl] ${label} failed:`, message);
    return fail(message);
  }
}

function requireString(value: unknown, label: string): string {
  if (typeof value !== 'string' || !value.trim()) throw new Error(`${label} 不能为空`);
  return value.trim();
}

function optionalNumber(value: unknown): number | undefined {
  return typeof value === 'number' && Number.isFinite(value) ? value : undefined;
}

class CodexArtifactCtl {
  async list(params?: { root?: string; dir?: string }): Promise<Rpc<unknown>> {
    return guard('list', async () =>
      listArtifacts(requireString(params?.root, 'root'), typeof params?.dir === 'string' ? params.dir : ''),
    );
  }

  /** 递归列出工作空间全部文件（「本会话产物」视图用） */
  async listAll(params?: { root?: string }): Promise<Rpc<unknown>> {
    return guard('listAll', async () => listAllArtifacts(requireString(params?.root, 'root')));
  }

  async readText(params?: { root?: string; path?: string; maxBytes?: number }): Promise<Rpc<unknown>> {
    return guard('readText', async () =>
      readArtifactText(
        requireString(params?.root, 'root'),
        requireString(params?.path, 'path'),
        optionalNumber(params?.maxBytes),
      ),
    );
  }

  async readBinary(params?: { root?: string; path?: string; maxBytes?: number }): Promise<Rpc<unknown>> {
    return guard('readBinary', async () =>
      readArtifactBase64(
        requireString(params?.root, 'root'),
        requireString(params?.path, 'path'),
        optionalNumber(params?.maxBytes),
      ),
    );
  }

  async saveAs(params?: { root?: string; path?: string; name?: string }): Promise<Rpc<unknown>> {
    return guard('saveAs', async () =>
      saveArtifactAs(
        requireString(params?.root, 'root'),
        requireString(params?.path, 'path'),
        typeof params?.name === 'string' ? params.name : undefined,
      ),
    );
  }

  async reveal(params?: { root?: string; path?: string }): Promise<Rpc<Record<string, never>>> {
    return guard('reveal', async () => {
      await revealArtifact(requireString(params?.root, 'root'), requireString(params?.path, 'path'));
      return {};
    });
  }

  async open(params?: { root?: string; path?: string }): Promise<Rpc<Record<string, never>>> {
    return guard('open', async () => {
      await openArtifact(requireString(params?.root, 'root'), requireString(params?.path, 'path'));
      return {};
    });
  }

  async openRoot(params?: { root?: string }): Promise<Rpc<Record<string, never>>> {
    return guard('openRoot', async () => {
      await openArtifactRoot(requireString(params?.root, 'root'));
      return {};
    });
  }
}

CodexArtifactCtl.toString = () => 'CodexArtifactCtl';
export default CodexArtifactCtl;