import assert from "node:assert/strict";
import { mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { test } from "bun:test";

import { createHwpodNodeServer, executeHwpodNodeOpsPlan } from "./src/hwpod-node-lib.ts";

test("hwpod-node executes minimal workspace node ops", async () => {
  const root = await mkdtemp(path.join(os.tmpdir(), "hwlab-hwpod-node-"));
  try {
    await writeFile(path.join(root, "main.c"), "int main(void) { return 0; }\n", "utf8");
    const result = await executeHwpodNodeOpsPlan({
      contractVersion: "hwpod-node-ops-v1",
      planId: "hwpod_plan_test",
      hwpodId: "hwpod-local",
      nodeId: "pc-host-1",
      ops: [
        { opId: "op_01", op: "node.health", args: { workspacePath: root } },
        { opId: "op_02", op: "workspace.ls", args: { workspacePath: root, path: "." } },
        { opId: "op_03", op: "workspace.cat", args: { workspacePath: root, path: "main.c" } }
      ]
    }, { now: () => "2026-06-05T00:00:00.000Z" });
    assert.equal(result.ok, true);
    assert.equal(result.status, "completed");
    assert.equal(result.results[1].output.entries[0].name, "main.c");
    assert.match(result.results[2].output.content, /int main/u);
  } finally {
    await rm(root, { recursive: true, force: true });
  }
});
test("hwpod-node HTTP endpoint accepts hwpod-node-ops plans", async () => {
  const server = createHwpodNodeServer({ now: () => "2026-06-05T00:00:00.000Z" });
  await new Promise((resolve) => server.listen(0, "127.0.0.1", resolve));
  try {
    const response = await fetch(`http://127.0.0.1:${server.address().port}/v1/hwpod-node-ops`, {
      method: "POST",
      headers: { "content-type": "application/json" },
      body: JSON.stringify({
        contractVersion: "hwpod-node-ops-v1",
        planId: "hwpod_plan_http",
        hwpodId: "hwpod-local",
        nodeId: "pc-host-1",
        ops: [{ opId: "op_01", op: "node.version", args: {} }]
      })
    });
    const payload = await response.json();
    assert.equal(response.status, 200);
    assert.equal(payload.ok, true);
    assert.equal(payload.results[0].op, "node.version");
  } finally {
    await new Promise((resolve, reject) => server.close((error: Error | undefined) => (error ? reject(error) : resolve(undefined))));
  }
});

test("hwpod-node applies workspace patches through the stable node op", async () => {
  const root = await mkdtemp(path.join(os.tmpdir(), "hwlab-hwpod-node-patch-"));
  try {
    await writeFile(path.join(root, "main.c"), "int value = 1;\n", "utf8");
    const result = await executeHwpodNodeOpsPlan({
      contractVersion: "hwpod-node-ops-v1",
      planId: "hwpod_plan_patch",
      hwpodId: "hwpod-local",
      nodeId: "pc-host-1",
      ops: [{
        opId: "op_patch",
        op: "workspace.apply-patch",
        args: {
          workspacePath: root,
          patch: [
            "*** Begin Patch",
            "*** Update File: main.c",
            "@@",
            "-int value = 1;",
            "+int value = 2;",
            "*** End Patch",
            ""
          ].join("\n")
        }
      }]
    }, { now: () => "2026-06-05T00:00:00.000Z" });
    assert.equal(result.ok, true);
    assert.equal(result.results[0].ok, true);
    assert.match(await readFile(path.join(root, "main.c"), "utf8"), /value = 2/u);
  } finally {
    await rm(root, { recursive: true, force: true });
  }
});