import fs from "node:fs/promises";
import path from "node:path";
import { Client } from "@modelcontextprotocol/sdk/client/index.js";
import { StdioClientTransport } from "@modelcontextprotocol/sdk/client/stdio.js";
import { extractQaToolPayload } from "./extract-tool-payload.js";
import { resolveQaNodeExecPath } from "./node-exec.js";
import type {
  QaRuntimeActionHandlerEnv,
  QaSkillStatusEntry,
  QaSuiteRuntimeEnv,
  QaTransportActionName,
} from "./suite-runtime-types.js";

function findSkill(skills: QaSkillStatusEntry[], name: string) {
  return skills.find((skill) => skill.name === name);
}

async function writeWorkspaceSkill(params: {
  env: Pick<QaSuiteRuntimeEnv, "gateway">;
  name: string;
  body: string;
}) {
  const skillDir = path.join(params.env.gateway.workspaceDir, "skills", params.name);
  await fs.mkdir(skillDir, { recursive: true });
  const skillPath = path.join(skillDir, "SKILL.md");
  await fs.writeFile(skillPath, `${params.body.trim()}\n`, "utf8");
  return skillPath;
}

async function callPluginToolsMcp(params: {
  env: Pick<QaSuiteRuntimeEnv, "gateway">;
  toolName: string;
  args: Record<string, unknown>;
}) {
  const transportEnv = Object.fromEntries(
    Object.entries(params.env.gateway.runtimeEnv).filter(
      (entry): entry is [string, string] => typeof entry[1] === "string",
    ),
  );
  const nodeExecPath = await resolveQaNodeExecPath();
  const transport = new StdioClientTransport({
    command: nodeExecPath,
    args: ["--import", "tsx", "src/mcp/plugin-tools-serve.ts"],
    stderr: "pipe",
    env: transportEnv,
  });
  const client = new Client({ name: "openclaw-qa-suite", version: "0.0.0" }, {});
  try {
    await client.connect(transport);
    const listed = await client.listTools();
    const tool = listed.tools.find((entry) => entry.name === params.toolName);
    if (!tool) {
      throw new Error(`MCP tool missing: ${params.toolName}`);
    }
    return await client.callTool({
      name: params.toolName,
      arguments: params.args,
    });
  } finally {
    await client.close().catch(() => {});
  }
}

async function handleQaAction(params: {
  env: QaRuntimeActionHandlerEnv;
  action: QaTransportActionName;
  args: Record<string, unknown>;
}) {
  const result = await params.env.transport.handleAction({
    action: params.action,
    args: params.args,
    cfg: params.env.cfg,
  });
  return extractQaToolPayload(result as Parameters<typeof extractQaToolPayload>[0]);
}

export { callPluginToolsMcp, findSkill, handleQaAction, writeWorkspaceSkill };