import { describe, expect, test } from "bun:test";

import type { RawContentExpectations } from "../../../../../src/server/checker/expect/types";

import { checkContentExpectations, resolveContentExpectations } from "../../../../../src/server/checker/expect/content";

function checkBodyExpect(body: string, rawExpectations?: RawContentExpectations) {
  const resolved = resolveContentExpectations(rawExpectations);
  return checkContentExpectations(body, resolved, { path: "body", phase: "body" });
}

describe("checkBodyExpect (ContentExpectations)", () => {
  test("无规则返回匹配成功", () => {
    const r = checkBodyExpect("anything");
    expect(r.matched).toBe(true);
    expect(r.failure).toBeNull();
  });

  test("空规则数组返回匹配成功", () => {
    const r = checkBodyExpect("anything", []);
    expect(r.matched).toBe(true);
    expect(r.failure).toBeNull();
  });

  test("resolve 输出显式 kind union 并物化 extractor 默认 exists", () => {
    expect(
      resolveContentExpectations([
        { contains: "ok" },
        { json: { path: "$.status" } },
        { css: { attr: "content", selector: "meta[name=status]" } },
        { xpath: { path: "/root/status" } },
      ]),
    ).toEqual([
      { kind: "value", matcher: { contains: "ok" } },
      { kind: "json", matcher: { exists: true }, path: "$.status" },
      { attr: "content", kind: "css", matcher: { exists: true }, selector: "meta[name=status]" },
      { kind: "xpath", matcher: { exists: true }, path: "/root/status" },
    ]);
  });

  test("contains 规则匹配成功", () => {
    const r = checkBodyExpect("hello world", [{ contains: "hello" }]);
    expect(r.matched).toBe(true);
    expect(r.failure).toBeNull();
  });

  test("contains 规则匹配失败", () => {
    const r = checkBodyExpect("hello world", [{ contains: "missing" }]);
    expect(r.matched).toBe(false);
    expect(r.failure).not.toBeNull();
    expect(r.failure!.kind).toBe("mismatch");
    expect(r.failure!.phase).toBe("body");
    expect(r.failure!.path).toBe("body[0]");
  });

  test("regex 规则匹配成功", () => {
    const r = checkBodyExpect("status: ok", [{ regex: "ok" }]);
    expect(r.matched).toBe(true);
  });

  test("regex 规则匹配失败", () => {
    const r = checkBodyExpect("status: error", [{ regex: "^ok$" }]);
    expect(r.matched).toBe(false);
    expect(r.failure!.path).toBe("body[0]");
  });

  test("json 等值匹配成功", () => {
    const body = JSON.stringify({ code: 0, status: "ok" });
    const r = checkBodyExpect(body, [{ json: { equals: "ok", path: "$.status" } }]);
    expect(r.matched).toBe(true);
  });

  test("json 等值匹配失败", () => {
    const body = JSON.stringify({ status: "ok" });
    const r = checkBodyExpect(body, [{ json: { equals: "error", path: "$.status" } }]);
    expect(r.matched).toBe(false);
    expect(r.failure!.kind).toBe("mismatch");
  });

  test("json 操作符匹配", () => {
    const body = JSON.stringify({ count: 42, version: "v2.1.0" });
    expect(checkBodyExpect(body, [{ json: { gte: 10, path: "$.count" } }]).matched).toBe(true);
    expect(checkBodyExpect(body, [{ json: { path: "$.version", regex: "\\d+\\.\\d+\\.\\d+" } }]).matched).toBe(true);
    expect(checkBodyExpect(body, [{ json: { gte: 100, path: "$.count" } }]).matched).toBe(false);
  });

  test("json 路径不存在", () => {
    const body = JSON.stringify({ status: "ok" });
    const r = checkBodyExpect(body, [{ json: { equals: "value", path: "$.notExist" } }]);
    expect(r.matched).toBe(false);
  });

  test("json 解析失败", () => {
    const r = checkBodyExpect("not json", [{ json: { equals: "ok", path: "$.status" } }]);
    expect(r.matched).toBe(false);
    expect(r.failure!.kind).toBe("error");
  });

  test("css 文本内容匹配", () => {
    const html = "<div id='health'>OK</div><span class='ver'>1.0</span>";
    expect(checkBodyExpect(html, [{ css: { equals: "OK", selector: "div#health" } }]).matched).toBe(true);
    expect(checkBodyExpect(html, [{ css: { equals: "1.0", selector: "span.ver" } }]).matched).toBe(true);
    expect(checkBodyExpect(html, [{ css: { equals: "ERROR", selector: "div#health" } }]).matched).toBe(false);
  });

  test("css 选择器无匹配元素", () => {
    const html = "<div>OK</div>";
    const r = checkBodyExpect(html, [{ css: { equals: "OK", selector: "span.missing" } }]);
    expect(r.matched).toBe(false);
  });

  test("css attr 提取", () => {
    const html = '<meta name="version" content="2.0.1">';
    expect(
      checkBodyExpect(html, [{ css: { attr: "content", equals: "2.0.1", selector: 'meta[name="version"]' } }]).matched,
    ).toBe(true);
  });

  test("css exists 检查", () => {
    const html = "<div id='test'>OK</div>";
    expect(checkBodyExpect(html, [{ css: { exists: true, selector: "div#test" } }]).matched).toBe(true);
    expect(checkBodyExpect(html, [{ css: { exists: false, selector: "span#missing" } }]).matched).toBe(true);
    expect(checkBodyExpect(html, [{ css: { exists: false, selector: "div#test" } }]).matched).toBe(false);
  });

  test("xpath 节点文本匹配", () => {
    const xml = "<root><status>ok</status><code>200</code></root>";
    expect(checkBodyExpect(xml, [{ xpath: { equals: "ok", path: "/root/status/text()" } }]).matched).toBe(true);
    expect(checkBodyExpect(xml, [{ xpath: { equals: "error", path: "/root/status/text()" } }]).matched).toBe(false);
  });

  test("xpath 无匹配节点", () => {
    const xml = "<root><status>ok</status></root>";
    const r = checkBodyExpect(xml, [{ xpath: { equals: "ok", path: "/root/missing/text()" } }]);
    expect(r.matched).toBe(false);
  });

  test("规则数组按顺序检查，第一条失败立即返回", () => {
    const body = JSON.stringify({ status: "error" });
    const r = checkBodyExpect(body, [{ contains: "healthy" }, { json: { equals: "error", path: "$.status" } }]);
    expect(r.matched).toBe(false);
    expect(r.failure!.path).toBe("body[0]");
  });

  test("多条规则全部通过", () => {
    const body = JSON.stringify({ count: 5, status: "healthy" });
    const r = checkBodyExpect(body, [
      { contains: "healthy" },
      { json: { equals: "healthy", path: "$.status" } },
      { json: { gte: 1, path: "$.count" } },
    ]);
    expect(r.matched).toBe(true);
    expect(r.failure).toBeNull();
  });

  test("多条 json 规则共享解析结果且全部通过", () => {
    const body = JSON.stringify({ count: 5, status: "healthy" });
    const originalParse = JSON.parse;
    let parseCount = 0;
    JSON.parse = ((text, reviver) => {
      parseCount++;
      return originalParse(text, reviver) as unknown;
    }) as typeof JSON.parse;

    try {
      const r = checkBodyExpect(body, [
        { json: { equals: "healthy", path: "$.status" } },
        { json: { gte: 1, path: "$.count" } },
      ]);
      expect(r.matched).toBe(true);
      expect(r.failure).toBeNull();
      expect(parseCount).toBe(1);
    } finally {
      JSON.parse = originalParse;
    }
  });

  test("第二条规则失败返回正确索引", () => {
    const body = JSON.stringify({ status: "ok" });
    const r = checkBodyExpect(body, [{ contains: "ok" }, { json: { equals: "error", path: "$.status" } }]);
    expect(r.matched).toBe(false);
    expect(r.failure!.path).toContain("body[1]");
  });

  test("JSON 响应不是合法 JSON 返回 error kind", () => {
    const r = checkBodyExpect("not json", [{ json: { equals: "ok", path: "$.status" } }]);
    expect(r.matched).toBe(false);
    expect(r.failure!.kind).toBe("error");
    expect(r.failure!.phase).toBe("body");
    expect(r.failure!.path).toContain("json");
  });

  test("CSS selector 无匹配元素返回 mismatch kind", () => {
    const html = "<div>no match</div>";
    const r = checkBodyExpect(html, [{ css: { equals: "test", selector: "span.missing" } }]);
    expect(r.matched).toBe(false);
    expect(r.failure!.kind).toBe("mismatch");
    expect(r.failure!.phase).toBe("body");
    expect(r.failure!.path).toContain("css");
  });

  test("XPath 无匹配节点返回 mismatch kind", () => {
    const xml = "<root><status>ok</status></root>";
    const r = checkBodyExpect(xml, [{ xpath: { equals: "ok", path: "/root/missing/text()" } }]);
    expect(r.matched).toBe(false);
    expect(r.failure!.kind).toBe("mismatch");
    expect(r.failure!.phase).toBe("body");
    expect(r.failure!.path).toContain("xpath");
  });

  test("regex 规则使用 regex 字段", () => {
    const r = checkBodyExpect("status: ok", [{ regex: "^status:" }]);
    expect(r.matched).toBe(true);
  });

  test("regex 规则失败返回 body phase", () => {
    const r = checkBodyExpect("status: error", [{ regex: "^ok$" }]);
    expect(r.matched).toBe(false);
    expect(r.failure!.phase).toBe("body");
    expect(r.failure!.path).toBe("body[0]");
  });
});
