#ifndef PST_DELIMITEDTEXTREADER_H
#define PST_DELIMITEDTEXTREADER_H

#include <QObject>
#include <QString>
#include <vtkSmartPointer.h>
#include <vector>
#include <string>

class vtkTable;
class vtkDelimitedTextReader;

namespace pst
{

    /**
     * @class DelimitedTextReader
     * @brief Read txt text.
     */
    class DelimitedTextReader : public QObject
    {
        Q_OBJECT
    public:
        explicit DelimitedTextReader(QObject* parent = nullptr);
        ~DelimitedTextReader();

    public:
        void SetFilePath(const QString& filePath);

        /**
         * Set/get whether to treat the first line of the file as headers.
         * The default is false (no headers).
         */
        void SetHaveHeaders(bool haveHeaders);

        /**
         * Specify the character(s) that will be used to separate fields.  For
         * example, set this to "," for a comma-separated value file.  Set
         * it to ".:;" for a file where columns can be separated by a
         * period, colon or semicolon.  The order of the characters in the
         * string does not matter.  Defaults to a comma.
         */
        void SetFieldDelimiterCharacters(const QString& flag);

        //自动为表格数据添加表头
        //包括第一列为行号下标，第一行为标签
        void AddTableHeaderAuto(bool addHeader);

        bool Update();

        vtkTable* GetOutput();

        std::vector<std::string> GetXTitles();
        std::vector<std::string> GetYTitles();

    private:
        void AddHeaderFromOriginalTable();
        //产生可用于显示成xy轴的字符串表头

        ///@生成可用于作为x和y轴的表头，
        ///即THETA和PHI哪个可以作为x轴，哪个可以作为y轴
        void GenerateXYTitle();

    private:
        QString m_filePath;
        vtkDelimitedTextReader* m_reader;
        bool m_shouldAddHeader;

        vtkTable* m_table;

        std::vector<std::string> m_XTitles;
        std::vector<std::string> m_YTitles;
    };

} //namespace PST

#endif // PST_DELIMITEDTEXTREADER_H