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 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

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#ifndef _CPPTESTS_BASETEST_H__
#define _CPPTESTS_BASETEST_H__

#include "cocos2d.h"
#include "extensions/cocos-ext.h"
#include "GUI/CCControlExtension/CCControlExtensions.h"
#include "GUI/CCScrollView/CCScrollView.h"
#include "GUI/CCScrollView/CCTableView.h"
#include "VisibleRect.h"

class TestSuite;

/**
 * Each test case should inherit from TestCase, and add to a TestSuite object.
 */
class TestCase : public cocos2d::Scene
{
public:
    /** TestCase test type.*/
    enum class Type
    {
        /** For testing whether test case not crash.*/
        ROBUSTNESS,
        /**
         * For check the correctness of regular test cases. 
         * A test case passes only if the actual output equal to the expected output.
         */
        UNIT,
        /** @warning The test type is not achieved.*/
        GRAPHICAL_STATIC,
        /** @note It's mean the test case need test manually.*/
        MANUAL
    };
    TestCase();
    ~TestCase();

    virtual std::string title() const { return ""; }
    virtual std::string subtitle() const { return ""; }

    /** Returns the test type, the default type is Type::ROBUSTNESS.*/
    virtual Type getTestType() const;
    /** Returns the time the test case needs.*/
    virtual float getDuration() const;


    /** Returns the expected output.*/
    virtual std::string getExpectedOutput() const { return ""; }
    /** Returns the actual output.*/
    virtual std::string getActualOutput() const { return ""; }

    /** Callback functions.*/
    virtual void restartTestCallback(cocos2d::Ref* sender);
    virtual void nextTestCallback(cocos2d::Ref* sender);
    virtual void priorTestCallback(cocos2d::Ref* sender);
    virtual void onBackCallback(cocos2d::Ref* sender);

    /**
     * You should NEVER call this method, unless you know what you are doing.
     */
    void setTestSuite(TestSuite* testSuite);
    TestSuite* getTestSuite() const { return _testSuite; }

    /** Returns the run time of test case.*/
    float getRunTime() const { return _runTime; }

    /**
     * You should NEVER call this method, unless you know what you are doing.
     */
    void setTestCaseName(const std::string& name) { _testCaseName = name; }
    std::string getTestCaseName() const { return _testCaseName; }

    const cocos2d::Label* getSubtitleLable() const { return _subtitleLabel; }
    const cocos2d::MenuItemImage* getRestartTestItem() const { return _restartTestItem; }

    virtual void onEnter() override;
CC_CONSTRUCTOR_ACCESS:
    virtual bool init() override;

protected:
    cocos2d::MenuItemImage* _priorTestItem;
    cocos2d::MenuItemImage* _restartTestItem;
    cocos2d::MenuItemImage* _nextTestItem;

    cocos2d::Label* _titleLabel;
    cocos2d::Label* _subtitleLabel;

private:
    TestSuite* _testSuite;
    float _runTime;
    std::string _testCaseName;
};

/**
 * A TestBase object stores the following information about a test:
 * - A pointer to the parent test(TestList or TestSuite).
 * - Array of children test names.
 * - A flag to indicate whether the test is a TestList object.
 *
 * @note You should not inherit from TestBase directly.
 */
class TestBase : public cocos2d::Ref
{
public:
    virtual ~TestBase();

    /** Backs up one level. */
    void backsUpOneLevel();

    virtual void runThisTest() {}

    bool isTestList() { return _isTestList; }

    ssize_t getChildTestCount() { return _childTestNames.size(); }

    /**
    * You should NEVER call this method.
    */
    void setTestParent(TestBase* parent) { _parentTest = parent; }
    TestBase* getTestParent() { return _parentTest; }

    void setTestName(const std::string& testName) { _testName = testName; }
    std::string getTestName() const { return _testName; }
protected:
    TestBase();

    std::string _testName;
    TestBase* _parentTest;
    bool _isTestList;
    std::vector<std::string> _childTestNames;
};

class TestController;

/**
* TestSuite correspond to a group of test cases.
* @note Each test case should add to a TestSuite object. 
*/
class TestSuite : public TestBase
{
public:
    void addTestCase(const std::string& testName, std::function<cocos2d::Scene*()> callback);

    virtual void restartCurrTest();
    virtual void enterNextTest();
    virtual void enterPreviousTest();

    int getCurrTestIndex() { return _currTestIndex; }
    virtual void runThisTest() override;

private:
    std::vector<std::function<cocos2d::Scene*()>> _testCallbacks;

    int _currTestIndex;
    friend class TestController;
};

class TestCustomTableView;

/**
 * An instance of TestList is a means for displaying hierarchical lists of TestSuite.
 */
class TestList : public TestBase, public cocos2d::extension::TableViewDataSource, public cocos2d::extension::TableViewDelegate
{
public:
    TestList();
    ~TestList();

    void addTest(const std::string& testName, std::function<TestBase*()> callback);

    virtual void runThisTest() override;


    virtual void tableCellTouched(cocos2d::extension::TableView* table, cocos2d::extension::TableViewCell* cell) override;
    virtual cocos2d::extension::TableViewCell* tableCellAtIndex(cocos2d::extension::TableView *table, ssize_t idx) override;
    virtual cocos2d::Size tableCellSizeForIndex(cocos2d::extension::TableView *table, ssize_t idx) override;
    virtual ssize_t numberOfCellsInTableView(cocos2d::extension::TableView *table) override;

    virtual void scrollViewDidScroll(cocos2d::extension::ScrollView* view) override{}
    virtual void scrollViewDidZoom(cocos2d::extension::ScrollView* view) override{}

    void deatchTableView();
private:
    std::vector<std::function<TestBase*()>> _testCallbacks;
    bool _cellTouchEnabled;
    bool _shouldRestoreTableOffset;
    cocos2d::Vec2 _tableOffset;
    friend class TestController;
    TestCustomTableView* _tableView{};
};


#define ADD_TEST(__className__) addTest( #__className__, [](){ return new (std::nothrow) __className__;} );

#define ADD_TEST_CASE(__className__) addTestCase( #__className__, [](){ return __className__::create();} );

#define DEFINE_TEST_LIST(__className__) class __className__  : public TestList { public: __className__();}

#define DEFINE_TEST_SUITE(__className__) class __className__  : public TestSuite { public: __className__();}


/**
 * BaseTest is retained for compatibility with older versions.
 * @warning It should soon be removed. 
 */
class BaseTest : public cocos2d::Layer
{
public:
    virtual std::string title() const { return ""; }
    virtual std::string subtitle() const{ return ""; }

    virtual void restartCallback(cocos2d::Ref* sender) {}
    virtual void nextCallback(cocos2d::Ref* sender){}
    virtual void backCallback(cocos2d::Ref* sender){}

    virtual void onEnter() override{}
    virtual void onExit() override{}
};

#endif /* defined(_CPPTESTS_BASETEST_H__) */