// tests/permissions.test.js
// 测试 permissions.js：可选主机权限的授权状态判断与申请逻辑
// 运行：node --test tests/permissions.test.js

const { describe, it, beforeEach } = require("node:test");
const assert = require("node:assert/strict");

const { toMatchPatterns } = require("../dist/utils.js");

/** 构造一个假的 chrome.permissions，granted 集合可观察 */
function createFakePermissions(granted = []) {
  const state = {
    granted: new Set(granted),
    requestCalls: [],
    containsCalls: 0,
    throwOnContains: false,
  };
  return {
    state,
    api: {
      contains: async ({ origins }) => {
        state.containsCalls++;
        if (state.throwOnContains) throw new Error("boom");
        return origins.every((o) => state.granted.has(o));
      },
      request: async ({ origins }) => {
        state.requestCalls.push(origins);
        origins.forEach((o) => state.granted.add(o));
        return true;
      },
    },
  };
}

function loadPerms(permissionsApi) {
  global.toMatchPatterns = toMatchPatterns; // permissions.js 会延迟读取该全局函数
  global.chrome = permissionsApi === null ? {} : { permissions: permissionsApi };
  delete require.cache[require.resolve("../dist/permissions.js")];
  return require("../dist/permissions.js");
}

describe("permissions - patternsForDomain", () => {
  beforeEach(() => {
    global.toMatchPatterns = toMatchPatterns;
  });

  it("返回 http / https 两条模式", () => {
    const P = loadPerms(createFakePermissions().api);
    assert.deepEqual(P.patternsForDomain("example.com"), ["http://example.com/*", "https://example.com/*"]);
  });

  it("通配符域名同样可转成可申请的 origin", () => {
    const P = loadPerms(createFakePermissions().api);
    assert.deepEqual(P.patternsForDomain("*.example.com"), [
      "http://*.example.com/*",
      "https://*.example.com/*",
    ]);
  });

  it("无法表达的规则返回空数组", () => {
    const P = loadPerms(createFakePermissions().api);
    assert.deepEqual(P.patternsForDomain("*"), []);
    assert.deepEqual(P.patternsForDomain(""), []);
  });
});

describe("permissions - partitionPatterns", () => {
  it("按已授权拆分成 granted / missing", async () => {
    const fake = createFakePermissions(["https://a.com/*"]);
    const P = loadPerms(fake.api);

    const result = await P.partitionPatterns(["https://a.com/*", "http://b.com/*", "https://b.com/*"]);

    assert.deepEqual(result.granted, ["https://a.com/*"]);
    assert.deepEqual(result.missing, ["http://b.com/*", "https://b.com/*"]);
  });

  it("contains 抛错时按未授权处理", async () => {
    const fake = createFakePermissions(["https://a.com/*"]);
    fake.state.throwOnContains = true;
    const P = loadPerms(fake.api);

    const result = await P.partitionPatterns(["https://a.com/*"]);
    assert.deepEqual(result.granted, []);
    assert.deepEqual(result.missing, ["https://a.com/*"]);
  });
});

describe("permissions - partitionDomains", () => {
  it("任一 scheme 已授权即算该域名已授权", async () => {
    const fake = createFakePermissions(["https://a.com/*"]);
    const P = loadPerms(fake.api);

    const result = await P.partitionDomains(["a.com", "b.com"]);
    assert.deepEqual(result.granted, ["a.com"]);
    assert.deepEqual(result.missing, ["b.com"]);
  });

  it("完全未授权的域名进入 missing", async () => {
    const P = loadPerms(createFakePermissions().api);
    const result = await P.partitionDomains(["a.com"]);
    assert.deepEqual(result.missing, ["a.com"]);
  });

  it("无法转成模式的域名视为未授权", async () => {
    const P = loadPerms(createFakePermissions().api);
    const result = await P.partitionDomains(["*"]);
    assert.deepEqual(result.missing, ["*"]);
  });
});

describe("permissions - requestForDomain", () => {
  it("已授权时直接返回 true 且不重复申请", async () => {
    const fake = createFakePermissions(["http://a.com/*", "https://a.com/*"]);
    const P = loadPerms(fake.api);

    assert.equal(await P.requestForDomain("a.com"), true);
    assert.equal(fake.state.requestCalls.length, 0, "已授权不应再次弹框");
  });

  it("未授权时申请全部模式", async () => {
    const fake = createFakePermissions();
    const P = loadPerms(fake.api);

    assert.equal(await P.requestForDomain("a.com"), true);
    assert.deepEqual(fake.state.requestCalls, [["http://a.com/*", "https://a.com/*"]]);
  });

  it("无法转换的域名不会发起申请", async () => {
    const fake = createFakePermissions();
    const P = loadPerms(fake.api);

    assert.equal(await P.requestForDomain("*"), false);
    assert.equal(fake.state.requestCalls.length, 0);
  });

  it("环境没有 chrome.permissions 时返回 false", async () => {
    const P = loadPerms(null);
    assert.equal(await P.requestForDomain("a.com"), false);
  });

  it("申请被拒绝时返回 false（不抛错）", async () => {
    const fake = createFakePermissions();
    fake.api.request = async () => false;
    const P = loadPerms(fake.api);

    assert.equal(await P.requestForDomain("a.com"), false);
  });
});