#include <gtest/gtest.h>
#include <string>
#include <regex>

// 模拟 OpenAPI 相关类，避免外部头文件依赖
class License {
public:
    std::string m_name;
    std::string m_url;
    License& name(const std::string& n) { m_name = n; return *this; }
    License& url(const std::string& u) { m_url = u; return *this; }
    std::string getName() const { return m_name; }
    std::string getUrl() const { return m_url; }
};

class Contact {
public:
    std::string m_name;
    std::string m_email;
    Contact& name(const std::string& n) { m_name = n; return *this; }
    Contact& email(const std::string& e) { m_email = e; return *this; }
    std::string getName() const { return m_name; }
    std::string getEmail() const { return m_email; }
};

class Info {
public:
    std::string m_title;
    std::string m_version;
    std::string m_description;
    Contact m_contact;
    License m_license;
    Info& title(const std::string& t) { m_title = t; return *this; }
    Info& version(const std::string& v) { m_version = v; return *this; }
    Info& description(const std::string& d) { m_description = d; return *this; }
    Info& contact(const Contact& c) { m_contact = c; return *this; }
    Info& license(const License& l) { m_license = l; return *this; }
    std::string getTitle() const { return m_title; }
    std::string getVersion() const { return m_version; }
    std::string getDescription() const { return m_description; }
    Contact getContact() const { return m_contact; }
    License getLicense() const { return m_license; }
};

class OpenAPI {
public:
    Info m_info;
    OpenAPI& info(const Info& i) { m_info = i; return *this; }
    Info getInfo() const { return m_info; }
};

// 待测配置类
class OpenApiConfig {
public:
    OpenAPI customOpenAPI() {
        Contact contact;
        contact.name("开发团队").email("dev@example.com");
        License license;
        license.name("Apache 2.0").url("https://www.apache.org/licenses/LICENSE-2.0");
        Info info;
        info.title("综合管理信息系统 API")
            .version("1.0.0")
            .description("综合管理信息系统后端接口文档，涵盖用户管理、角色管理、部门管理、"
                         "字典管理、参数配置、业务管理、统计分析、权限管理、审计日志及接口集成等模块。")
            .contact(contact)
            .license(license);
        OpenAPI api;
        api.info(info);
        return api;
    }
};

class OpenApiConfigTest : public ::testing::Test {
protected:
    OpenApiConfig config;
};

// 正常输入测试：验证返回的 OpenAPI 对象各字段是否正确
TEST_F(OpenApiConfigTest, testCustomOpenAPI_ReturnsCorrectInfo) {
    OpenAPI api = config.customOpenAPI();
    const Info& info = api.getInfo();
    EXPECT_EQ(info.getTitle(), "综合管理信息系统 API");
    EXPECT_EQ(info.getVersion(), "1.0.0");
    EXPECT_EQ(info.getDescription(), 
        "综合管理信息系统后端接口文档，涵盖用户管理、角色管理、部门管理、"
        "字典管理、参数配置、业务管理、统计分析、权限管理、审计日志及接口集成等模块。");
    
    const Contact& contact = info.getContact();
    EXPECT_EQ(contact.getName(), "开发团队");
    EXPECT_EQ(contact.getEmail(), "dev@example.com");
    
    const License& license = info.getLicense();
    EXPECT_EQ(license.getName(), "Apache 2.0");
    EXPECT_EQ(license.getUrl(), "https://www.apache.org/licenses/LICENSE-2.0");
}

// 边界值测试：版本号格式必须符合语义化版本
TEST_F(OpenApiConfigTest, testCustomOpenAPI_VersionFormat) {
    OpenAPI api = config.customOpenAPI();
    std::string version = api.getInfo().getVersion();
    std::regex versionPattern(R"(\d+\.\d+\.\d+)");
    EXPECT_TRUE(std::regex_match(version, versionPattern));
}

// 边界值测试：描述信息非空
TEST_F(OpenApiConfigTest, testCustomOpenAPI_DescriptionNotNull) {
    OpenAPI api = config.customOpenAPI();
    EXPECT_FALSE(api.getInfo().getDescription().empty());
}

// 特殊场景测试：多次调用返回不同对象（每次都是新实例）
TEST_F(OpenApiConfigTest, testCustomOpenAPI_MultipleCallsReturnDifferentObjects) {
    OpenAPI api1 = config.customOpenAPI();
    OpenAPI api2 = config.customOpenAPI();
    EXPECT_NE(&api1, &api2);
}