import { mkdir, mkdtemp, rm, chmod, writeFile } from "node:fs/promises";
import { writeFileSync, readFileSync } from "node:fs";
import os from "node:os";
import path from "node:path";
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";

const electronState = vi.hoisted(() => ({ userData: "" }));
vi.mock("electron", () => ({
  app: {
    getPath: () => electronState.userData,
    getVersion: () => "test"
  }
}));

import { createDemoFlow, createExampleFlows, createFlow, exportFlowToPath, importFlowFromPath, listFlows, saveFlow } from "./flows";

describe("flow summaries", () => {
  beforeEach(async () => {
    electronState.userData = await mkdtemp(path.join(os.tmpdir(), "rpa-flow-summary-"));
  });

  afterEach(async () => {
    await rm(electronState.userData, { recursive: true, force: true });
  });

  it("loads the latest persisted run into the task summary", async () => {
    const flow = saveFlow(createFlow("运行记录任务"));
    const olderDir = path.join(electronState.userData, "runs", "older");
    const latestDir = path.join(electronState.userData, "runs", "latest");
    await mkdir(olderDir, { recursive: true });
    await mkdir(latestDir, { recursive: true });
    await writeFile(path.join(olderDir, "run.json"), JSON.stringify({
      flowId: flow.id, status: "succeeded", finishedAt: "2026-10-27T01:00:00.000Z", durationMs: 120
    }));
    await writeFile(path.join(latestDir, "run.json"), JSON.stringify({
      flowId: flow.id, status: "failed", finishedAt: "2026-10-27T02:00:00.000Z", durationMs: 456,
      error: { reason: "测试失败原因" }
    }));

    expect(listFlows()).toContainEqual(expect.objectContaining({
      id: flow.id,
      name: "运行记录任务",
      lastRunStatus: "failed",
      lastRunAt: "2026-10-27T02:00:00.000Z",
      lastRunDurationMs: 456,
      lastRunError: "测试失败原因"
    }));
  });

  it("creates a connected local browser demo flow", () => {
    const flow = createDemoFlow("http://127.0.0.1:17863/");
    expect(flow.name).toBe("本地网页订单演示");
    expect(flow.nodes.map((node) => node.componentId)).toEqual([
      "Trigger.Manual", "WebBrowser_CreateV3", "Element_SetValue_V6", "Element_SetValue_V6", "Element_Click_V6", "Element_GetText_V5"
    ]);
    expect(flow.edges).toHaveLength(5);
    expect(flow.nodes.find((node) => node.id === "node_result")?.options.outputVar).toBe("订单结果");
  });

  it("creates six stable example flows without duplicate ids", () => {
    const examples = createExampleFlows("http://127.0.0.1:17863/");
    expect(examples).toHaveLength(6);
    expect(new Set(examples.map((flow) => flow.id)).size).toBe(6);
    expect(examples.every((flow) => flow.nodes.length > 2 && flow.edges.length > 1)).toBe(true);
    expect(examples.find((flow) => flow.id === "example_error_route")?.edges.some((edge) => edge.sourceHandle === "error")).toBe(true);
  });
});

describe("flow share export/import", () => {
  beforeEach(async () => {
    electronState.userData = await mkdtemp(path.join(os.tmpdir(), "rpa-flow-share-"));
  });

  afterEach(async () => {
    await rm(electronState.userData, { recursive: true, force: true });
  });

  it("exports a flow to a share file and re-imports it with a fresh id on conflict", async () => {
    const flow = saveFlow(createFlow("密钥读取任务"));
    const shareFile = path.join(electronState.userData, "share", "密钥读取任务.rpaflow.json");
    await mkdir(path.dirname(shareFile), { recursive: true });
    exportFlowToPath(flow.id, shareFile);

    expect(JSON.parse(readFileSync(shareFile, "utf8")).id).toBe(flow.id);

    // id 冲突：再次导入同一文件应生成新 id，不覆盖原任务
    const imported = importFlowFromPath(shareFile);
    expect(imported.id).not.toBe(flow.id);
    expect(imported.name).toBe("密钥读取任务");
    expect(listFlows().filter((item) => item.name === "密钥读取任务")).toHaveLength(2);
  });

  it("keeps the original id when importing a share file whose id is free", () => {
    const shareFile = path.join(electronState.userData, "手工分享.rpaflow.json");
    writeFileSync(shareFile, JSON.stringify({
      schemaVersion: 1,
      id: "manual_task_01",
      name: "手工分享的任务",
      description: "",
      enabled: true,
      trigger: { type: "manual", label: "手动运行" },
      variables: [],
      nodes: [{ id: "node_start", componentId: "Trigger.Manual", position: { x: 160, y: 120 }, values: {}, options: {} }],
      edges: [],
      meta: { createdAt: "2026-01-01T00:00:00.000Z", updatedAt: "2026-01-01T00:00:00.000Z", appVersion: "0.1.0" }
    }), "utf8");

    const imported = importFlowFromPath(shareFile);
    expect(imported.id).toBe("manual_task_01");
    expect(imported.name).toBe("手工分享的任务");
  });

  it("rejects invalid share files with a readable reason", () => {
    const badJson = path.join(electronState.userData, "bad.rpaflow.json");
    writeFileSync(badJson, "not json", "utf8");
    expect(() => importFlowFromPath(badJson)).toThrow(/不是有效的 JSON/);

    const badSchema = path.join(electronState.userData, "schema.rpaflow.json");
    writeFileSync(badSchema, JSON.stringify({ schemaVersion: 99, nodes: [], edges: [] }), "utf8");
    expect(() => importFlowFromPath(badSchema)).toThrow(/schemaVersion/);

    const badStructure = path.join(electronState.userData, "structure.rpaflow.json");
    writeFileSync(badStructure, JSON.stringify({ schemaVersion: 1, nodes: "no" }), "utf8");
    expect(() => importFlowFromPath(badStructure)).toThrow(/nodes\/edges/);
  });

  it("overwrites a read-only flow file on save (imported file scenario)", async () => {
    const flow = saveFlow(createFlow("只读任务"));
    const target = path.join(electronState.userData, "flows", `${flow.id}.json`);
    // 模拟外部复制进来带只读属性的导入文件
    await chmod(target, 0o444);
    expect(() => saveFlow({ ...flow, name: "只读任务-改" })).not.toThrow();
    expect(JSON.parse(readFileSync(target, "utf8")).name).toBe("只读任务-改");
    await chmod(target, 0o666);
  });
});