// Link-understanding runner tests cover guarded fetches, command execution, scoping, and template behavior.
import { beforeEach, describe, expect, it, vi } from "vitest";
import type { MsgContext } from "../auto-reply/templating.js";
import type { OpenClawConfig } from "../config/types.openclaw.js";
import type { LinkModelConfig } from "../config/types.tools.js";
import { fetchWithSsrFGuard } from "../infra/net/fetch-guard.js";
import { runCommandWithTimeout } from "../process/exec.js";
import { applyLinkUnderstanding } from "./apply.js";
import { runLinkUnderstanding } from "./runner.js";

const mocks = vi.hoisted(() => ({
  fetchWithSsrFGuard: vi.fn(),
  runCommandWithTimeout: vi.fn(),
}));

vi.mock("../infra/net/fetch-guard.js", async () => {
  const actual = await vi.importActual<typeof import("../infra/net/fetch-guard.js")>(
    "../infra/net/fetch-guard.js",
  );
  return {
    ...actual,
    fetchWithSsrFGuard: mocks.fetchWithSsrFGuard,
  };
});

vi.mock("../process/exec.js", async () => {
  const actual = await vi.importActual<typeof import("../process/exec.js")>("../process/exec.js");
  return {
    ...actual,
    runCommandWithTimeout: mocks.runCommandWithTimeout,
  };
});

function cfg(entry: LinkModelConfig) {
  return {
    tools: {
      links: {
        enabled: true,
        models: [entry],
      },
    },
  } as OpenClawConfig;
}

function ctx(body: string): MsgContext {
  return { Body: body } as MsgContext;
}

function mockGuardedFetch(body = "guarded content", finalUrl = "https://example.com/final") {
  const release = vi.fn(async () => {});
  mocks.fetchWithSsrFGuard.mockResolvedValueOnce({
    response: new Response(body),
    finalUrl,
    release,
  });
  return release;
}

function mockCommand(stdout = "summary") {
  mocks.runCommandWithTimeout.mockResolvedValueOnce({
    code: 0,
    killed: false,
    signal: null,
    stderr: "",
    stdout,
    termination: "exit",
  });
}

describe("runLinkUnderstanding", () => {
  beforeEach(() => {
    mocks.fetchWithSsrFGuard.mockReset();
    mocks.runCommandWithTimeout.mockReset();
  });

  it("applies shared media scope rules to link message context", async () => {
    const result = await runLinkUnderstanding({
      cfg: {
        tools: {
          links: {
            enabled: true,
            scope: {
              default: "allow",
              rules: [
                {
                  action: "deny",
                  match: { channel: "slack", chatType: "channel", keyPrefix: "agent:main:" },
                },
              ],
            },
            models: [{ type: "cli", command: "summarize" }],
          },
        },
      } as OpenClawConfig,
      ctx: {
        Body: "see https://example.com/page",
        ChatType: "channel",
        Provider: "discord",
        SessionKey: "agent:main:slack:channel:C123",
        Surface: "slack",
      } as MsgContext,
    });

    expect(result).toEqual([]);
    expect(fetchWithSsrFGuard).not.toHaveBeenCalled();
    expect(runCommandWithTimeout).not.toHaveBeenCalled();
  });

  it("fetches links through the SSRF guard before passing content to CLI stdin", async () => {
    const controller = new AbortController();
    const release = mockGuardedFetch("page body", "https://example.com/final");
    mockCommand("summarized page");

    const result = await runLinkUnderstanding({
      cfg: cfg({ type: "cli", command: "summarize", args: ["--source", "{{LinkUrl}}"] }),
      ctx: ctx("see https://example.com/page"),
      signal: controller.signal,
    });

    expect(result).toEqual(["summarized page"]);
    expect(fetchWithSsrFGuard).toHaveBeenCalledWith(
      expect.objectContaining({
        auditContext: "link-understanding",
        mode: "strict",
        url: "https://example.com/page",
        signal: controller.signal,
      }),
    );
    expect(runCommandWithTimeout).toHaveBeenCalledWith(["summarize", "--source"], {
      env: {
        OPENCLAW_LINK_FINAL_URL: "https://example.com/final",
        OPENCLAW_LINK_URL: "https://example.com/page",
      },
      input: "page body",
      signal: controller.signal,
      killProcessTree: true,
      timeoutMs: 30000,
    });
    expect(release).toHaveBeenCalledOnce();
  });

  it.each([
    {
      agentText: "prepared transcript",
      BodyForAgent: "stale alias",
      expected: "prepared transcript",
    },
    { BodyForAgent: "SDK transcript", expected: "SDK transcript" },
    { agentText: "", BodyForAgent: "stale alias", expected: "" },
    { expected: "transport envelope" },
  ])(
    "preserves the prepared model text $expected through link enrichment",
    async ({ expected, ...text }) => {
      mockGuardedFetch("page body");
      mockCommand("summarized page");
      const context: MsgContext = {
        Body: "transport envelope",
        RawBody: "see https://example.com/page",
        CommandBody: "see https://example.com/page",
        ...text,
      };

      await applyLinkUnderstanding({
        cfg: cfg({ type: "cli", command: "summarize" }),
        ctx: context,
      });

      expect(context.Body).toBe("transport envelope\n\nsummarized page");
      expect(context.agentText).toBe(
        expected ? `${expected}\n\nsummarized page` : "summarized page",
      );
      expect(context.BodyForAgent).toBe(context.agentText);
      expect(context).toMatchObject({
        RawBody: "see https://example.com/page",
        CommandBody: "see https://example.com/page",
        rawText: "see https://example.com/page",
        commandText: "see https://example.com/page",
        LinkUnderstanding: ["summarized page"],
      });
    },
  );

  it("leaves context untouched when guarded link fetch produces no output", async () => {
    mocks.fetchWithSsrFGuard.mockRejectedValueOnce(new Error("blocked by DNS policy"));
    const context: MsgContext = {
      Body: "transport envelope",
      agentText: "prepared transcript",
      BodyForAgent: "SDK transcript",
      CommandBody: "see https://example.com/page",
    };
    const before = structuredClone(context);

    await applyLinkUnderstanding({
      cfg: cfg({ type: "cli", command: "summarize" }),
      ctx: context,
    });

    expect(context).toEqual(before);
    expect(runCommandWithTimeout).not.toHaveBeenCalled();
  });

  it("does not run configured curl fetchers against attacker-controlled URLs", async () => {
    mockGuardedFetch("guarded page body");

    const result = await runLinkUnderstanding({
      cfg: cfg({
        type: "cli",
        command: "curl",
        args: ["-s", "-L", "{{LinkUrl}}"],
      }),
      ctx: ctx("see http://192.168.1.64.nip.io:8888/aws-iam-credentials"),
    });

    expect(result).toEqual(["guarded page body"]);
    expect(fetchWithSsrFGuard).toHaveBeenCalledOnce();
    expect(runCommandWithTimeout).not.toHaveBeenCalled();
  });

  it.each([
    [
      "skips links rejected by the guarded fetch DNS policy",
      "http://169.254.169.254.nip.io/latest/meta-data/",
      "Blocked: resolves to private/internal/special-use IP address",
    ],
    [
      "skips links rejected by the guarded fetch redirect policy",
      "https://public.example/redirect-to-metadata",
      "redirect target resolves to private network",
    ],
  ])("%s", async (_name, url, errorMessage) => {
    mocks.fetchWithSsrFGuard.mockRejectedValueOnce(new Error(errorMessage));

    const result = await runLinkUnderstanding({
      cfg: cfg({ type: "cli", command: "summarize" }),
      ctx: ctx(`see ${url}`),
    });

    expect(result).toEqual([]);
    expect(runCommandWithTimeout).not.toHaveBeenCalled();
  });

  it.each([
    [
      "uses the global link-tools timeout for fetches when configured",
      { timeoutSeconds: 15 },
      15000,
    ],
    ["falls back to the largest model timeout for fetches when no global timeout is set", {}, 9000],
  ] as const)("%s", async (_name, timeoutConfig, timeoutMs) => {
    mockGuardedFetch("page body", "https://example.com/final");
    mockCommand("summarized page");

    await runLinkUnderstanding({
      cfg: {
        tools: {
          links: {
            enabled: true,
            ...timeoutConfig,
            models: [
              { type: "cli", command: "summarize-fast", timeoutSeconds: 1 },
              { type: "cli", command: "summarize-slow", timeoutSeconds: 9 },
            ],
          },
        },
      } as OpenClawConfig,
      ctx: ctx("see https://example.com/page"),
    });

    expect(fetchWithSsrFGuard).toHaveBeenCalledWith(
      expect.objectContaining({
        timeoutMs,
        url: "https://example.com/page",
      }),
    );
  });

  it("skips pre-aborted work without changing inbound context", async () => {
    const controller = new AbortController();
    controller.abort();
    const context = ctx("see https://example.com/page");
    const original = { ...context };

    await expect(
      applyLinkUnderstanding({
        ctx: context,
        cfg: cfg({ type: "cli", command: "summarize" }),
        signal: controller.signal,
      }),
    ).resolves.toBeUndefined();

    expect(fetchWithSsrFGuard).not.toHaveBeenCalled();
    expect(runCommandWithTimeout).not.toHaveBeenCalled();
    expect(context).toEqual(original);
  });

  it("passes the signal to each CLI entry during ordinary fallback", async () => {
    const controller = new AbortController();
    mockGuardedFetch("page body", "https://example.com/final");
    mockCommand("");
    mockCommand("second summary");

    const result = await runLinkUnderstanding({
      cfg: {
        tools: {
          links: {
            models: [{ command: "summarize-a" }, { command: "summarize-b" }],
          },
        },
      },
      ctx: ctx("see https://example.com/page"),
      signal: controller.signal,
    });

    expect(result).toEqual(["second summary"]);
    for (const [index, command] of ["summarize-a", "summarize-b"].entries()) {
      expect(runCommandWithTimeout).toHaveBeenNthCalledWith(
        index + 1,
        [command],
        expect.objectContaining({ signal: controller.signal }),
      );
    }
  });

  it.each([
    { outcome: "successful exit", code: 0, stdout: "late summary", termination: "exit" },
    { outcome: "failed exit", code: 1, stdout: "", termination: "exit" },
    { outcome: "signal termination", code: null, stdout: "", termination: "signal" },
  ])("cancellation overrides $outcome without fallback or context changes", async (result) => {
    const controller = new AbortController();
    const reason = new Error("reply canceled");
    mockGuardedFetch("first body", "https://example.com/first");
    mocks.runCommandWithTimeout.mockImplementationOnce(async () => {
      controller.abort(reason);
      return { ...result, killed: false, signal: null, stderr: "" };
    });
    const context = ctx("see https://example.com/first and https://example.com/second");
    const original = { ...context };

    await expect(
      applyLinkUnderstanding({
        cfg: {
          tools: {
            links: {
              models: [{ command: "summarize-a" }, { command: "summarize-b" }],
            },
          },
        },
        ctx: context,
        signal: controller.signal,
      }),
    ).rejects.toMatchObject({ name: "AbortError", cause: reason });

    expect(fetchWithSsrFGuard).toHaveBeenCalledOnce();
    expect(runCommandWithTimeout).toHaveBeenCalledOnce();
    expect(context).toEqual(original);
  });

  it("rethrows a guarded fetch AbortError without starting the CLI", async () => {
    const abortError = Object.assign(new Error("This operation was aborted"), {
      name: "AbortError",
    });
    mocks.fetchWithSsrFGuard.mockRejectedValueOnce(abortError);

    await expect(
      runLinkUnderstanding({
        cfg: cfg({ type: "cli", command: "summarize" }),
        ctx: ctx("see https://example.com/page"),
        signal: new AbortController().signal,
      }),
    ).rejects.toBe(abortError);
    expect(runCommandWithTimeout).not.toHaveBeenCalled();
  });

  it("gives caller cancellation precedence over an ordinary fetch error", async () => {
    const controller = new AbortController();
    const reason = new Error("reply canceled");
    mocks.fetchWithSsrFGuard.mockImplementationOnce(async () => {
      controller.abort(reason);
      throw new Error("connect ECONNREFUSED");
    });

    await expect(
      runLinkUnderstanding({
        cfg: cfg({ type: "cli", command: "summarize" }),
        ctx: ctx("see https://example.com/page"),
        signal: controller.signal,
      }),
    ).rejects.toMatchObject({ name: "AbortError", cause: reason });
    expect(runCommandWithTimeout).not.toHaveBeenCalled();
  });
});