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/*

 * Node.cpp

 *

 *  Created on: Apr 26, 2009

 *      Author: Mattias Runge

 */

#include "Node.h"

namespace atom {

namespace xml {

using namespace utils;

Node::Node()

{

    this->myIsEmpty = true;

    LOG.setName("XML::Node");

}

Node::Node(string filename)

{

    this->myIsEmpty = true;

    LOG.setName("XML::Node");

    this->parse(filename, file_get_contents(filename));

}

Node::Node(string filename, string xmlData)

{

    this->myIsEmpty = true;

    LOG.setName("XML::Node");

    this->parse(filename, xmlData);

}

void Node::parse(string filename, string xmlData)

{

    char c;

    unsigned int position = 0;

    while (position < xmlData.length())

    {

        c = xmlData.at(position);

        switch (c)

        {

        case '<':

            position = this->parseTag(filename, xmlData, position);

            break;

        }

        position++;

    }

}

string Node::tagName()

{

    return this->myTagName;

}

Node::attributeList & Node::attributes()

{

    return this->myAttributes;

}

string Node::operator [](string attributeName)

{

    attributeList::iterator iter = this->myAttributes.find(attributeName);

    if (iter == this->myAttributes.end())

    {

        return "";

    }

    return iter->second;

}

Node Node::selectFirst()

{

    // TODO Throw exception if returned list is empty

    return this->select()[0];

}

Node Node::selectFirst(string tagName)

{

    // TODO Throw exception if returned list is empty

    return this->select(tagName)[0];

}

Node Node::selectFirst(string tagName, attributeList attributes)

{

    // TODO Throw exception if returned list is empty

    return this->select(tagName, attributes)[0];

}

Node Node::selectFirst(string tagName, attributePair pair1)

{

    attributeList attributes;

    attributes.insert(pair1);

    return this->selectFirst(tagName, attributes);

}

Node Node::selectFirst(string tagName, attributePair pair1, attributePair pair2)

{

    attributeList attributes;

    attributes.insert(pair1);

    attributes.insert(pair2);

    return this->selectFirst(tagName, attributes);

}

Node Node::selectFirst(string tagName, attributePair pair1, attributePair pair2, attributePair pair3)

{

    attributeList attributes;

    attributes.insert(pair1);

    attributes.insert(pair2);

    attributes.insert(pair3);

    return this->selectFirst(tagName, attributes);

}

Node Node::selectFirst(string tagName, attributePair pair1, attributePair pair2, attributePair pair3, attributePair pair4)

{

    attributeList attributes;

    attributes.insert(pair1);

    attributes.insert(pair2);

    attributes.insert(pair3);

    attributes.insert(pair4);

    return this->selectFirst(tagName, attributes);

}

Node Node::selectFirst(string tagName, attributePair pair1, attributePair pair2, attributePair pair3, attributePair pair4, attributePair pair5)

{

    attributeList attributes;

    attributes.insert(pair1);

    attributes.insert(pair2);

    attributes.insert(pair3);

    attributes.insert(pair4);

    attributes.insert(pair5);

    return this->selectFirst(tagName, attributes);

}

Node::nodeList Node::select()

{

    return this->myChildren;

}

Node::nodeList Node::select(string tagName)

{

    attributeList attributes;

    return this->select(tagName, attributes);

}

Node::nodeList Node::select(string tagName, attributeList attributes)

{

    nodeList list;

    bool attributesMatch = true;

    for (unsigned int n = 0; n < this->myChildren.size(); n++)

    {

        if (this->myChildren[n].tagName() == tagName)

        {

            attributesMatch = true;

            for (attributeList::iterator iter = attributes.begin(); iter != attributes.end(); iter++)

            {

                //LOG.debug("#attributes = " + itos(this->myChildren[n].attributes().size()));

                //LOG.debug("iter->first = " + iter->first);

                //LOG.debug("iter->second = " + iter->second);

                //LOG.debug("this->myChildren[n][iter->first] = " + this->myChildren[n][iter->first]);

                if (this->myChildren[n][iter->first] != iter->second)

                {

                    attributesMatch = false;

                    break;

                }

            }

            if (attributesMatch)

            {

                list.push_back(myChildren[n]);

            }

        }

    }

    return list;

}

Node::nodeList Node::select(string tagName, attributePair pair1)

{

    attributeList attributes;

    attributes.insert(pair1);

    return this->select(tagName, attributes);

}

Node::nodeList Node::select(string tagName, attributePair pair1, attributePair pair2)

{

    attributeList attributes;

    attributes.insert(pair1);

    attributes.insert(pair2);

    return this->select(tagName, attributes);

}

Node::nodeList Node::select(string tagName, attributePair pair1, attributePair pair2, attributePair pair3)

{

    attributeList attributes;

    attributes.insert(pair1);

    attributes.insert(pair2);

    attributes.insert(pair3);

    return this->select(tagName, attributes);

}

Node::nodeList Node::select(string tagName, attributePair pair1, attributePair pair2, attributePair pair3, attributePair pair4)

{

    attributeList attributes;

    attributes.insert(pair1);

    attributes.insert(pair2);

    attributes.insert(pair3);

    attributes.insert(pair4);

    return this->select(tagName, attributes);

}

Node::nodeList Node::select(string tagName, attributePair pair1, attributePair pair2, attributePair pair3, attributePair pair4, attributePair pair5)

{

    attributeList attributes;

    attributes.insert(pair1);

    attributes.insert(pair2);

    attributes.insert(pair3);

    attributes.insert(pair4);

    attributes.insert(pair5);

    return this->select(tagName, attributes);

}

int Node::parseTag(string filename, string xmlData, unsigned int position)

{

    if (xmlData.at(position) != '<')

    {

        throw new Exception("Did not find < as expected. Character " + itos(position));

    }

    position++;

    int endPosition = xmlData.find('>', position);

    if (xmlData.at(position) == '?' || xmlData.at(position) == '!' || xmlData.at(position) == '/')

    {

        return endPosition;

    }

    this->myIsEmpty = false;

    string tagString;

    try

    {

        tagString = xmlData.substr(position, endPosition - position);

    }

    catch (std::out_of_range & e)

    {

        LOG.debug("parseTag exception: " + string(e.what()));

        LOG.debug("A xmlData=" + xmlData + " :: position=" + itos(position) + " :: endPosition=" + itos(endPosition));

        throw e;

    }

    tagString = trim(tagString);

    tagString = trim(tagString, '\n');

    tagString = trim(tagString);

    tagString += " ";

    bool foundEnd = false;

    bool foundTag = false;

    string buffer;

    unsigned int pos = 0;

    char c;

    int s, e;

    while (pos < tagString.length())

    {

        c = tagString.at(pos);

        switch (c)

        {

        case ' ':

            if (!foundTag)

            {

                this->myTagName = buffer;

                buffer = "";

                //cout << "Found tag: " << myTagName << endl;

                foundTag = true;

            }

            break;

        case '/':

            foundEnd = true;

            break;

        case '=':

            s = tagString.find('"', pos) + 1;

            e = tagString.find('"', s);

            try

            {

                this->myAttributes[buffer] = tagString.substr(s, e - s);

                //LOG.debug("Added attribute \"" + buffer + "\" = \"" + this->myAttributes[buffer] + "\"");

            }

            catch (std::out_of_range & ex)

            {

                LOG.debug("parseTag exception: " + string(ex.what()));

                LOG.debug("A xmlData=" + xmlData + " :: position=" + itos(position) + " :: endPosition=" + itos(endPosition));

                throw ex;

            }

            //cout << "Found attribute: " << buffer << " = " << myAttributes[buffer] << endl;

            pos = e;

            buffer = "";

            break;

        default:

            buffer += c;

            break;

        }

        pos++;

    }

    position = endPosition;

    if (!foundEnd)

    {

        while (position < xmlData.length())

        {

            c = xmlData.at(position);

            switch (c)

            {

            case '<':

                if (xmlData.at(position + 1) == '/')

                {

                    position += 2;

                    endPosition = xmlData.find('>', position);

                    try

                    {

                        if (myTagName.compare(xmlData.substr(position, endPosition - position)) == 0)

                        {

                            //cout << "Found end tag: " << myTagName << endl;

                            return endPosition;

                        }

                        else

                        {

                            throw new Exception("Invalid end tag found. " + xmlData.substr(position, endPosition - position) + "::" + myTagName);

                        }

                    }

                    catch (std::out_of_range & ex)

                    {

                        LOG.debug("parseTag exception: " + string(ex.what()));

                        LOG.debug("A xmlData=" + xmlData + " :: position=" + itos(position) + " :: endPosition=" + itos(endPosition));

                        throw ex;

                    }

                }

                Node subNode;

                position = subNode.parseTag(filename, xmlData, position);

                if (!subNode.myIsEmpty)

                {

                    this->myChildren.push_back(subNode);

                }

                break;

            }

            position++;

        }

    }

    return position;

}

string Node::toString()

{

    string buffer = "<" + this->myTagName;

    for (attributeList::iterator iter = this->myAttributes.begin(); iter != this->myAttributes.end(); iter++)

    {

        buffer += " " + iter->first + "=\"" + iter->second + "\"";

    }

    if (this->myChildren.size() > 0)

    {

        buffer += ">\n";

        for (unsigned int n = 0; n < this->myChildren.size(); n++)

        {

            buffer += this->myChildren[n].toString();

        }

        buffer += "</" + this->myTagName + ">\n";

    }

    else

    {

        buffer += "/>\n";

    }

    return buffer;

}

}

}