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

import {
  applyValueMatcher,
  checkValueExpectation,
  displayValueExpectation,
  evaluateJsonPath,
  resolveValueExpectation,
} from "../../../../../src/server/checker/expect/value";

describe("evaluateJsonPath", () => {
  const obj = {
    active: true,
    code: 0,
    data: {
      count: 42,
      items: [{ name: "a" }, { name: "b" }],
      nested: { deep: "value" },
    },
    emptyArr: [],
    emptyObj: {},
    error: null,
    status: "ok",
  };

  test("简单字段访问", () => {
    expect(evaluateJsonPath(obj, "$.status")).toBe("ok");
    expect(evaluateJsonPath(obj, "$.code")).toBe(0);
    expect(evaluateJsonPath(obj, "$.active")).toBe(true);
    expect(evaluateJsonPath(obj, "$.error")).toBeNull();
  });

  test("嵌套对象访问", () => {
    expect(evaluateJsonPath(obj, "$.data.count")).toBe(42);
    expect(evaluateJsonPath(obj, "$.data.nested.deep")).toBe("value");
  });

  test("数组索引访问", () => {
    expect(evaluateJsonPath(obj, "$.data.items[0].name")).toBe("a");
    expect(evaluateJsonPath(obj, "$.data.items[1].name")).toBe("b");
  });

  test("路径不存在返回 undefined", () => {
    expect(evaluateJsonPath(obj, "$.notExist")).toBeUndefined();
    expect(evaluateJsonPath(obj, "$.data.notExist")).toBeUndefined();
    expect(evaluateJsonPath(obj, "$.data.items[99]")).toBeUndefined();
  });

  test("空对象和空数组", () => {
    expect(evaluateJsonPath(obj, "$.emptyObj")).toEqual({});
    expect(evaluateJsonPath(obj, "$.emptyArr")).toEqual([]);
  });

  test("非 $ 开头路径返回 undefined", () => {
    expect(evaluateJsonPath(obj, "status")).toBeUndefined();
    expect(evaluateJsonPath(obj, ".status")).toBeUndefined();
  });

  test("null 对象上访问", () => {
    expect(evaluateJsonPath(null, "$.any")).toBeUndefined();
  });
});

describe("applyValueMatcher", () => {
  test("equals 操作符", () => {
    expect(applyValueMatcher("ok", { equals: "ok" })).toBe(true);
    expect(applyValueMatcher("ok", { equals: "error" })).toBe(false);
    expect(applyValueMatcher(42, { equals: 42 })).toBe(true);
    expect(applyValueMatcher(42, { equals: 41 })).toBe(false);
    expect(applyValueMatcher(null, { equals: null })).toBe(true);
    expect(applyValueMatcher(true, { equals: true })).toBe(true);
  });

  test("equals 支持 JSON 对象和数组", () => {
    expect(applyValueMatcher({ status: "ok" }, { equals: { status: "ok" } })).toBe(true);
    expect(applyValueMatcher({ status: "ok" }, { equals: { status: "fail" } })).toBe(false);
    expect(applyValueMatcher(["a", "b"], { equals: ["a", "b"] })).toBe(true);
    expect(applyValueMatcher(["a", "b"], { equals: ["b", "a"] })).toBe(false);
  });

  test("contains 操作符", () => {
    expect(applyValueMatcher("hello world", { contains: "hello" })).toBe(true);
    expect(applyValueMatcher("hello world", { contains: "missing" })).toBe(false);
    expect(applyValueMatcher(12345, { contains: "23" })).toBe(true);
  });

  test("regex matcher", () => {
    expect(applyValueMatcher("v2.1.0", { regex: "\\d+\\.\\d+\\.\\d+" })).toBe(true);
    expect(applyValueMatcher("v2.1", { regex: "\\d+\\.\\d+\\.\\d+" })).toBe(false);
    expect(applyValueMatcher("abc123", { regex: "^\\w+\\d+$" })).toBe(true);
  });

  test("empty 操作符", () => {
    expect(applyValueMatcher("", { empty: true })).toBe(true);
    expect(applyValueMatcher(null, { empty: true })).toBe(true);
    expect(applyValueMatcher(undefined, { empty: true })).toBe(true);
    expect(applyValueMatcher([], { empty: true })).toBe(true);
    expect(applyValueMatcher({}, { empty: true })).toBe(true);
    expect(applyValueMatcher("ok", { empty: true })).toBe(false);
    expect(applyValueMatcher(0, { empty: true })).toBe(false);
    expect(applyValueMatcher(false, { empty: true })).toBe(false);
    expect(applyValueMatcher([1, 2], { empty: false })).toBe(true);
    expect(applyValueMatcher([], { empty: false })).toBe(false);
  });

  test("exists 操作符", () => {
    expect(applyValueMatcher("ok", { exists: true })).toBe(true);
    expect(applyValueMatcher(null, { exists: true })).toBe(true);
    expect(applyValueMatcher(undefined, { exists: true })).toBe(false);
    expect(applyValueMatcher(undefined, { exists: false })).toBe(true);
    expect(applyValueMatcher("ok", { exists: false })).toBe(false);
  });

  test("gte 操作符", () => {
    expect(applyValueMatcher(10, { gte: 5 })).toBe(true);
    expect(applyValueMatcher(5, { gte: 5 })).toBe(true);
    expect(applyValueMatcher(3, { gte: 5 })).toBe(false);
    expect(applyValueMatcher("10", { gte: 5 })).toBe(true);
  });

  test("lte 操作符", () => {
    expect(applyValueMatcher(3, { lte: 5 })).toBe(true);
    expect(applyValueMatcher(5, { lte: 5 })).toBe(true);
    expect(applyValueMatcher(10, { lte: 5 })).toBe(false);
  });

  test("gt 操作符", () => {
    expect(applyValueMatcher(10, { gt: 5 })).toBe(true);
    expect(applyValueMatcher(5, { gt: 5 })).toBe(false);
  });

  test("lt 操作符", () => {
    expect(applyValueMatcher(3, { lt: 5 })).toBe(true);
    expect(applyValueMatcher(5, { lt: 5 })).toBe(false);
  });

  test("多操作符 AND 组合", () => {
    expect(applyValueMatcher(7, { gte: 5, lte: 10 })).toBe(true);
    expect(applyValueMatcher(3, { gte: 5, lte: 10 })).toBe(false);
    expect(applyValueMatcher(15, { gte: 5, lte: 10 })).toBe(false);
  });
});

describe("resolveValueExpectation", () => {
  test("原始值解析为 equals matcher", () => {
    expect(resolveValueExpectation("ok")).toEqual({ equals: "ok" });
    expect(resolveValueExpectation(42)).toEqual({ equals: 42 });
    expect(resolveValueExpectation(null)).toEqual({ equals: null });
    expect(resolveValueExpectation(true)).toEqual({ equals: true });
  });

  test("对象 matcher 原样保留", () => {
    const matcher = { gte: 10 };
    expect(resolveValueExpectation(matcher)).toBe(matcher);
    expect(resolveValueExpectation({ contains: "ell" })).toEqual({ contains: "ell" });
  });

  test("undefined 返回 undefined", () => {
    expect(resolveValueExpectation(undefined)).toBeUndefined();
  });

  test("failure expected 使用用户可读的 equals 值", () => {
    const result = checkValueExpectation("actual", resolveValueExpectation("expected"), {
      path: "finishReason",
      phase: "finishReason",
    });

    expect(result.matched).toBe(false);
    expect(result.failure?.expected).toBe("expected");
  });

  test("displayValueExpectation 保留多 matcher 对象", () => {
    expect(displayValueExpectation({ contains: "ok", regex: "^ok$" })).toEqual({ contains: "ok", regex: "^ok$" });
  });
});
