/*
    QAD - Qt ADvanced

    Ivan Pelipenko peri4ko@yandex.ru, Andrey Bychkov work.a.b@yandex.ru

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef QPICONFIG_H
#define QPICONFIG_H

#include "qad_utils_export.h"

#include <QColor>
#include <QDebug>
#include <QFile>
#include <QPointF>
#include <QRectF>
#include <QStringList>
#include <QTextStream>
#include <QVector>
#include <cmath>


inline QByteArray QString2QByteArray(const QString & string) {
	return string.isEmpty() ? QByteArray() : qUncompress(QByteArray::fromBase64(string.toLatin1()));
}
QAD_UTILS_EXPORT int QString2int(const QString & string);
inline QColor QString2QColor(const QString & string) {
	return (string.left(1) == "#" ? QColor(string.right(string.length() - 1).toInt(0, 16)) : QColor(QString2int(string)));
}
QAD_UTILS_EXPORT QRect QString2QRect(const QString & string);
QAD_UTILS_EXPORT QRectF QString2QRectF(const QString & string);
QAD_UTILS_EXPORT QPoint QString2QPoint(const QString & string);
QAD_UTILS_EXPORT QPointF QString2QPointF(const QString & string);

inline QString QColor2QString(const QColor & color) {
	QString s = color.name();
	return "0x" + QString::number(color.alpha(), 16).rightJustified(2, '0') + s.right(s.length() - 1);
}
inline QString QPoint2QString(const QPoint & point) {
	return QString::number(point.x()) + ";" + QString::number(point.y());
}
inline QString QPointF2QString(const QPointF & point) {
	return QString::number(point.x()) + ";" + QString::number(point.y());
}
inline QString QByteArray2QString(const QByteArray & array) {
	return array.isEmpty() ? QString() : QString(qCompress(array, 9).toBase64());
}
QAD_UTILS_EXPORT QString QRect2QString(const QRect & rect);
QAD_UTILS_EXPORT QString QRectF2QString(const QRectF & rect);

// clang-format off
#define QPICONFIG_GET_VALUE \
		Entry & getValue(const QString & vname, const char * def, bool * exist = 0) {return getValue(vname, QString(def), exist);} \
		Entry & getValue(const QString & vname, const QStringList & def, bool * exist = 0) {return getValue(vname, def.join("%|%"), exist);} \
		Entry & getValue(const QString & vname, const bool def, bool * exist = 0) {return getValue(vname, QString::number(def), exist);} \
		Entry & getValue(const QString & vname, const short def, bool * exist = 0) {return getValue(vname, QString::number(def), exist);} \
		Entry & getValue(const QString & vname, const int def, bool * exist = 0) {return getValue(vname, QString::number(def), exist);} \
		Entry & getValue(const QString & vname, const long def, bool * exist = 0) {return getValue(vname, QString::number(def), exist);} \
		Entry & getValue(const QString & vname, const uchar def, bool * exist = 0) {return getValue(vname, QString::number(def), exist);} \
		Entry & getValue(const QString & vname, const ushort def, bool * exist = 0) {return getValue(vname, QString::number(def), exist);} \
		Entry & getValue(const QString & vname, const uint def, bool * exist = 0) {return getValue(vname, QString::number(def), exist);} \
		Entry & getValue(const QString & vname, const ulong def, bool * exist = 0) {return getValue(vname, QString::number(def), exist);} \
		Entry & getValue(const QString & vname, const float def, bool * exist = 0) {return getValue(vname, QString::number(def), exist);} \
		Entry & getValue(const QString & vname, const double def, bool * exist = 0) {return getValue(vname, QString::number(def), exist);} \
		Entry & getValue(const QString & vname, const QColor & def, bool * exist = 0) {return getValue(vname, QColor2QString(def), exist);} \
		Entry & getValue(const QString & vname, const Qt::GlobalColor def, bool * exist = 0) {return getValue(vname, QColor(def), exist);} \
		Entry & getValue(const QString & vname, const QRect & def, bool * exist = 0) {return getValue(vname, QRect2QString(def), exist);} \
		Entry & getValue(const QString & vname, const QRectF & def, bool * exist = 0) {return getValue(vname, QRectF2QString(def), exist);} \
		Entry & getValue(const QString & vname, const QPoint & def, bool * exist = 0) {return getValue(vname, QPoint2QString(def), exist);} \
		Entry & getValue(const QString & vname, const QPointF & def, bool * exist = 0) {return getValue(vname, QPointF2QString(def), exist);} \
		Entry & getValue(const QString & vname, const QByteArray & def, bool * exist = 0) {return getValue(vname, QByteArray2QString(def), exist);}
// clang-format on

class QAD_UTILS_EXPORT QPIConfig: public QFile {
	friend class Entry;
	friend class Branch;
	friend class QPIConfigWidget;

public:
	enum FileType {
		Config,
		XML
	};

	QPIConfig(const QString & path, QIODevice::OpenMode mode, QPIConfig::FileType type);
	QPIConfig(const QString & path, QIODevice::OpenMode mode = QIODevice::ReadWrite);
	QPIConfig(const QString & path, QPIConfig::FileType type);
	QPIConfig(QString * str, QPIConfig::FileType type = QPIConfig::Config);
	~QPIConfig();

	void setFile(const QString & path, QIODevice::OpenMode mode = QIODevice::ReadWrite);
	void setString(QString * str);

	void setCodec(const char * codecName);

	class Entry;

	class QAD_UTILS_EXPORT Branch: public QVector<Entry *> {
		friend class QPIConfig;
		friend class Entry;

	public:
		Branch() { ; }

		Entry & getValue(const QString & vname, const QString & def = QString(), bool * exist = 0);
		QPICONFIG_GET_VALUE

		Branch allLeaves();
		Branch getValues(const QString & name);
		Branch getLeaves();
		Branch getBranches();
		Branch & filter(const QString & f);
		bool isEntryExists(const QString & name) const {
			foreach(const Entry * i, *this)
				if (entryExists(i, name)) return true;
			return false;
		}
		int indexOf(const Entry * e) {
			for (int i = 0; i < size(); ++i)
				if (at(i) == e) return i;
			return -1;
		}

	private:
		bool entryExists(const Entry * e, const QString & name) const;
		void allLeaves(Branch & b, Entry * e) {
			foreach(Entry * i, e->_children) {
				if (i->isLeaf())
					b << i;
				else
					allLeaves(b, i);
			}
		}

		static Entry _empty;
		QString delim;
	};

	class QAD_UTILS_EXPORT Entry {
		friend class QPIConfig;
		friend class Branch;
		friend class QPIConfigWidget;
		friend class ConfigValueWidget;

	public:
		Entry() {
			_parent = 0;
			_line   = -1;
		}

		Entry * parent() const { return _parent; }
		int childCount() { return _children.size(); }
		Branch & children() {
			_children.delim = delim;
			return _children;
		}
		Entry * child(const int index) const { return _children[index]; }
		const Entry * findChild(const QString & name) const {
			foreach(const Entry * i, _children)
				if (i->_name == name) return i;
			return 0;
		}
		Entry * findChild(const QString & name) {
			foreach(Entry * i, _children)
				if (i->_name == name) return i;
			return 0;
		}
		bool isLeaf() const { return _children.empty(); }

		const QString & name() const { return _name; }
		const QString & value() const { return _value; }
		const QString & type() const { return _type; }
		const QString & comment() const { return _comment; }

		Entry & setName(const QString & value) {
			_name = value;
			return *this;
		}
		Entry & setType(const QString & value) {
			_type = value;
			return *this;
		}
		Entry & setComment(const QString & value) {
			_comment = value;
			return *this;
		}
		Entry & setValue(const QString & value) {
			_value = value;
			return *this;
		}
		Entry & setValue(const QStringList & value) {
			setValue(value.join("%|%"));
			setType("l");
			return *this;
		}
		Entry & setValue(const char * value) {
			setValue(QString(value));
			setType("s");
			return *this;
		}
		Entry & setValue(const bool value) {
			setValue(QString::number(value));
			setType("b");
			return *this;
		}
		Entry & setValue(const short value) {
			setValue(QString::number(value));
			setType("n");
			return *this;
		}
		Entry & setValue(const int value) {
			setValue(QString::number(value));
			setType("n");
			return *this;
		}
		Entry & setValue(const long value) {
			setValue(QString::number(value));
			setType("n");
			return *this;
		}
		Entry & setValue(const uchar value) {
			setValue(QString::number(value));
			setType("n");
			return *this;
		}
		Entry & setValue(const ushort value) {
			setValue(QString::number(value));
			setType("n");
			return *this;
		}
		Entry & setValue(const uint value) {
			setValue(QString::number(value));
			setType("n");
			return *this;
		}
		Entry & setValue(const ulong value) {
			setValue(QString::number(value));
			setType("n");
			return *this;
		}
		Entry & setValue(const float value) {
			setValue(QString::number(value));
			setType("f");
			return *this;
		}
		Entry & setValue(const double value) {
			setValue(QString::number(value));
			setType("f");
			return *this;
		}
		Entry & setValue(const QColor & value) {
			setValue(QColor2QString(value));
			setType("c");
			return *this;
		}
		Entry & setValue(const Qt::GlobalColor & value) {
			setValue(QColor(value));
			return *this;
		}
		Entry & setValue(const QRect & value) {
			setValue(QRect2QString(value));
			setType("r");
			return *this;
		}
		Entry & setValue(const QRectF & value) {
			setValue(QRectF2QString(value));
			setType("a");
			return *this;
		}
		Entry & setValue(const QPoint & value) {
			setValue(QPoint2QString(value));
			setType("p");
			return *this;
		}
		Entry & setValue(const QPointF & value) {
			setValue(QPointF2QString(value));
			setType("v");
			return *this;
		}
		Entry & setValue(const QByteArray & value) {
			setValue(QByteArray2QString(value));
			setType("s");
			return *this;
		}

		Entry & getValue(const QString & vname, const QString & def = QString(), bool * exist = 0);
		QPICONFIG_GET_VALUE

		Branch getValues(const QString & vname);

		bool isEntryExists(const QString & name) const { return entryExists(this, name); }

		bool toBool() const {
			return (_value.toLower().trimmed() == "true" || _value.toLower().trimmed() == "yes" || _value.toLower().trimmed() == "on" ||
			        _value.toInt() > 0);
		}
		char toChar() const { return (_value.isEmpty() ? 0 : _value[0].toLatin1()); }
		short toShort() const { return _value.toShort(); }
		int toInt() const { return QString2int(_value); }
		long toLong() const { return QString2int(_value); }
		uchar toUChar() const { return QString2int(_value); }
		ushort toUShort() const { return QString2int(_value); }
		uint toUInt() const { return QString2int(_value); }
		ulong toULong() const { return QString2int(_value); }
		float toFloat() const { return _value.toFloat(); }
		double toDouble() const { return _value.toDouble(); }
		QString toString() const { return _value; }
		QStringList toStringList() const { return _value.split("%|%"); }
		QColor toColor() const { return QString2QColor(_value); }
		QRect toRect() const { return QString2QRect(_value); }
		QRectF toRectF() const { return QString2QRectF(_value); }
		QPoint toPoint() const { return QString2QPoint(_value); }
		QPointF toPointF() const { return QString2QPointF(_value); }
		QByteArray toByteArray() const { return QString2QByteArray(_value); }

	private:
		static bool compare(const QPIConfig::Entry * f, const QPIConfig::Entry * s) { return f->_line < s->_line; }
		bool entryExists(const Entry * e, const QString & name) const;
		void buildLine() { _all = _tab + _full_name + " = " + _value + " #" + _type + " " + _comment; }
		void clear() {
			_children.clear();
			_name = _value = _type = _comment = _all = QString();
			_line                                    = 0;
			_parent                                  = 0;
		}
		void deleteBranch() {
			foreach(Entry * i, _children) {
				i->deleteBranch();
				delete i;
			}
		}

		static Entry _empty;
		Entry * _parent;
		Branch _children;
		QString _tab;
		QString _name;
		QString _value;
		QString _type;
		QString _comment;
		QString _all;
		QString _full_name;
		QString delim;
		int _line;
	};

	Entry & getValue(const QString & vname, const QString & def = QString(), bool * exist = 0);
	QPICONFIG_GET_VALUE

	Branch getValues(const QString & vname);

	void setValue(const QString & name, const QString & value, const QString & type = "s", bool write = true);
	void setValue(const QString & name, const QStringList & value, bool write = true) { setValue(name, value.join("%|%"), "l", write); }
	void setValue(const QString & name, const char * value, bool write = true) { setValue(name, QString(value), "s", write); }
	void setValue(const QString & name, const bool value, bool write = true) { setValue(name, QString::number(value), "b", write); }
	void setValue(const QString & name, const short value, bool write = true) { setValue(name, QString::number(value), "n", write); }
	void setValue(const QString & name, const int value, bool write = true) { setValue(name, QString::number(value), "n", write); }
	void setValue(const QString & name, const long value, bool write = true) { setValue(name, QString::number(value), "n", write); }
	void setValue(const QString & name, const uchar value, bool write = true) { setValue(name, QString::number(value), "n", write); }
	void setValue(const QString & name, const ushort value, bool write = true) { setValue(name, QString::number(value), "n", write); }
	void setValue(const QString & name, const uint value, bool write = true) { setValue(name, QString::number(value), "n", write); }
	void setValue(const QString & name, const ulong value, bool write = true) { setValue(name, QString::number(value), "n", write); }
	void setValue(const QString & name, const float value, bool write = true) { setValue(name, QString::number(value), "f", write); }
	void setValue(const QString & name, const double value, bool write = true) { setValue(name, QString::number(value), "f", write); }
	void setValue(const QString & name, const QColor & value, bool write = true) { setValue(name, QColor2QString(value), "c", write); }
	void setValue(const QString & name, const Qt::GlobalColor & value, bool write = true) { setValue(name, QColor(value), write); }
	void setValue(const QString & name, const QRect & value, bool write = true) { setValue(name, QRect2QString(value), "r", write); }
	void setValue(const QString & name, const QRectF & value, bool write = true) { setValue(name, QRectF2QString(value), "a", write); }
	void setValue(const QString & name, const QPoint & value, bool write = true) { setValue(name, QPoint2QString(value), "p", write); }
	void setValue(const QString & name, const QPointF & value, bool write = true) { setValue(name, QPointF2QString(value), "v", write); }
	void setValue(const QString & name, const QByteArray & value, bool write = true) {
		setValue(name, QByteArray2QString(value), "s", write);
	}

	Entry & rootEntry() { return root; }
	int entriesCount() const { return childCount(&root); }
	bool isEntryExists(const QString & name) const { return entryExists(&root, name); }

	Branch allTree() {
		Branch b;
		foreach(Entry * i, root._children)
			b << i;
		return b;
	}
	Branch allLeaves();
	int entryIndex(const QString & name);

	QString getName(uint number) { return entryByIndex(number)._name; }
	QString getValueByIndex(uint number) { return entryByIndex(number)._value; }
	QChar getType(uint number) { return entryByIndex(number)._type[0]; }
	QString getComment(uint number) { return entryByIndex(number)._comment; }

	QPIConfig::Entry &
	addEntry(const QString & name, const QString & value, const QString & type = "s", bool write = true, bool node = false);
	void setName(uint number, const QString & name, bool write = true);
	void setValue(uint number, const QString & value, bool write = true);
	void setType(uint number, const QString & type, bool write = true);
	void setComment(uint number, const QString & comment, bool write = true);

	void removeEntry(const QString & name, bool write = true);
	void removeEntry(uint number, bool write = true);

	void clear();
	void readAll();
	void writeAll();
	QString writeAllToString();
	void readAllFromString(const QString & str);

	const QString & delimiter() const { return delim; }
	void setDelimiter(const QString & d) {
		delim = d;
		setEntryDelim(&root, d);
		readAll();
	}

private:
	QPIConfig(const QString & path, QStringList dirs);
	void init();
	int childCount(const Entry * e) const {
		int c = 0;
		foreach(const Entry * i, e->_children)
			c += childCount(i);
		c += e->_children.size();
		return c;
	}
	bool entryExists(const Entry * e, const QString & name) const;
	void buildFullNames(Entry * e) {
		foreach(Entry * i, e->_children) {
			if (e != &root)
				i->_full_name = e->_full_name + delim + i->_name;
			else
				i->_full_name = i->_name;
			buildFullNames(i);
		}
	}
	void allLeaves(Branch & b, Entry * e) {
		foreach(Entry * i, e->_children) {
			if ((!i->_value.isEmpty() && !i->isLeaf()) || i->isLeaf()) b << i;
			allLeaves(b, i);
		}
	}
	void setEntryDelim(Entry * e, const QString & d) {
		foreach(Entry * i, e->_children)
			setEntryDelim(i, d);
		e->delim = d;
	}
	inline Entry & entryByIndex(const int index) {
		Branch b = allLeaves();
		if (index < 0 || index >= b.size()) return empty;
		return *(b[index]);
	}
	void removeEntry(Branch & b, Entry * e);
	void deleteEntry(Entry * e) {
		foreach(Entry * i, e->_children)
			deleteEntry(i);
		delete e;
	}
	QString getPrefixFromLine(QString line, bool * exists);
	void updateIncludes();
	QString parseLine(QString v);
	void parse(QString content = QString());
	void setupCodec();

	int centry;
	bool internal;
	QVector<QPIConfig *> includes, inc_devs;
	Branch all_includes;
	QFile * dev;
	QStringList incdirs;
	QString delim, *buffer, codec;
	Entry root, empty;
	uint lines;
	QStringList other;
	QTextStream stream;
	FileType type;
};

#endif // QPICONFIG_H