/*************************************************************************/
/*  doc_dump.cpp                                                         */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/
#include "version.h"
#include "doc_dump.h"
#include "os/file_access.h"
#include "scene/main/node.h"


static void _write_string(FileAccess *f,int p_tablevel,const String& p_string) {

	String tab;
	for(int i=0;i<p_tablevel;i++) tab+="\t";
	f->store_string(tab+p_string+"\n");
}

struct _ConstantSort {

	String name;
	int value;
	bool operator<(const _ConstantSort& p_c) const {

		String left_a=name.find("_")==-1?name:name.substr(0,name.find("_"));
		String left_b=p_c.name.find("_")==-1?p_c.name:p_c.name.substr(0,p_c.name.find("_"));
		if(left_a==left_b)
			return value<p_c.value;
		else
			return left_a<left_b;

	}

};


static String _escape_string(const String& p_str) {

	String ret=p_str;
	ret=ret.replace("&","&amp;");
	ret=ret.replace("<","&gt;");
	ret=ret.replace(">","&lt;");
	ret=ret.replace("'","&apos;");
	ret=ret.replace("\"","&quot;");
	for (char i=1;i<32;i++) {

		char chr[2]={i,0};
		ret=ret.replace(chr,"&#"+String::num(i)+";");
	}
	ret=ret.utf8();
	return ret;
}
void DocDump::dump(const String& p_file) {


	List<StringName> class_list;
	ClassDB::get_class_list(&class_list);

	class_list.sort_custom<StringName::AlphCompare>();


	FileAccess *f = FileAccess::open(p_file,FileAccess::WRITE);

	_write_string(f,0,"<?xml version=\"1.0\" encoding=\"UTF-8\" ?>");

	_write_string(f,0,"<doc version=\""+String(VERSION_MKSTRING)+"\" name=\"Engine Types\">");
	while(class_list.size()) {

		String name=class_list.front()->get();

		String header="<class name=\""+name+"\"";
		String inherits=ClassDB::get_parent_class(name);
		if (inherits!="")
			header+=" inherits=\""+inherits+"\"";
		String category=ClassDB::get_category(name);
		if (category=="")
			category="Core";
		header+=" category=\""+category+"\"";
		header+=">";
		_write_string(f,0,header);
		_write_string(f,1,"<brief_description>");
		_write_string(f,1,"</brief_description>");
		_write_string(f,1,"<description>");
		_write_string(f,1,"</description>");
		_write_string(f,1,"<methods>");

		List<MethodInfo> method_list;
		ClassDB::get_method_list(name,&method_list,true);
		method_list.sort();


		for(List<MethodInfo>::Element *E=method_list.front();E;E=E->next()) {
			if (E->get().name=="" || E->get().name[0]=='_')
				continue; //hiden

			MethodBind *m = ClassDB::get_method(name,E->get().name);

			String qualifiers;
			if (E->get().flags&METHOD_FLAG_CONST)
				qualifiers+="qualifiers=\"const\"";

			_write_string(f,2,"<method name=\""+_escape_string(E->get().name)+"\" "+qualifiers+" >");

			for(int i=-1;i<E->get().arguments.size();i++) {

				PropertyInfo arginfo;

				if (i==-1) {

					arginfo=E->get().return_val;
					String type_name=(arginfo.hint==PROPERTY_HINT_RESOURCE_TYPE)?arginfo.hint_string:Variant::get_type_name(arginfo.type);

					if (arginfo.type==Variant::NIL)
						continue;
					_write_string(f,3,"<return type=\""+type_name+"\">");
				} else {


					arginfo=E->get().arguments[i];

					String type_name;

					if (arginfo.hint==PROPERTY_HINT_RESOURCE_TYPE)
						type_name=arginfo.hint_string;
					else if (arginfo.type==Variant::NIL)
						type_name="var";
					else
						type_name=Variant::get_type_name(arginfo.type);

					if (m && m->has_default_argument(i)) {
						Variant default_arg=m->get_default_argument(i);
						String default_arg_text=String(_escape_string(m->get_default_argument(i)));

						switch(default_arg.get_type()) {

							case Variant::NIL:
								default_arg_text="NULL";
								break;
							// atomic types
							case Variant::BOOL:
								if (bool(default_arg))
									default_arg_text="true";
								else
									default_arg_text="false";
								break;
							case Variant::INT:
							case Variant::REAL:
								//keep it
								break;
							case Variant::STRING:		// 15
							case Variant::NODE_PATH:		// 15
								default_arg_text="\""+default_arg_text+"\"";
								break;
							case Variant::TRANSFORM:
								if (default_arg.operator Transform()==Transform()) {
									default_arg_text="";
								}

								default_arg_text=Variant::get_type_name(default_arg.get_type())+"("+default_arg_text+")";
								break;

							case Variant::VECTOR2:		// 5
							case Variant::RECT2:
							case Variant::VECTOR3:
							case Variant::PLANE:
							case Variant::QUAT:
							case Variant::RECT3: //sorry naming convention fail :( not like it's used often // 10
							case Variant::BASIS:
							case Variant::COLOR:
							case Variant::POOL_BYTE_ARRAY:
							case Variant::POOL_INT_ARRAY:
							case Variant::POOL_REAL_ARRAY:
							case Variant::POOL_STRING_ARRAY:	//25
							case Variant::POOL_VECTOR3_ARRAY:
							case Variant::POOL_COLOR_ARRAY:
								default_arg_text=Variant::get_type_name(default_arg.get_type())+"("+default_arg_text+")";
								break;
							case Variant::OBJECT:
							case Variant::INPUT_EVENT:
							case Variant::DICTIONARY:		// 20
							case Variant::ARRAY:
							case Variant::_RID:
							case Variant::IMAGE:
							//case Variant::RESOURCE:

								default_arg_text=Variant::get_type_name(default_arg.get_type())+"()";
								break;
							default: {}

						}




						_write_string(f,3,"<argument index=\""+itos(i)+"\" name=\""+_escape_string(arginfo.name)+"\" type=\""+type_name+"\" default=\""+_escape_string(default_arg_text)+"\">");
					} else
						_write_string(f,3,"<argument index=\""+itos(i)+"\" name=\""+arginfo.name+"\" type=\""+type_name+"\">");
				}


				String hint;
				switch(arginfo.hint) {
					case PROPERTY_HINT_DIR: hint="A directory."; break;
					case PROPERTY_HINT_RANGE: hint="Range - min: "+arginfo.hint_string.get_slice(",",0)+" max: "+arginfo.hint_string.get_slice(",",1)+" step: "+arginfo.hint_string.get_slice(",",2); break;
					case PROPERTY_HINT_ENUM: hint="Values: "; for(int j=0;j<arginfo.hint_string.get_slice_count(",");j++) { if (j>0) hint+=", "; hint+=arginfo.hint_string.get_slice(",",j)+"="+itos(j); } break;
					case PROPERTY_HINT_LENGTH: hint="Length: "+arginfo.hint_string; break;
					case PROPERTY_HINT_FLAGS: hint="Values: "; for(int j=0;j<arginfo.hint_string.get_slice_count(",");j++) { if (j>0) hint+=", "; hint+=arginfo.hint_string.get_slice(",",j)+"="+itos(1<<j); } break;
					case PROPERTY_HINT_FILE: hint="A file:"; break;
					default: {}
					//case PROPERTY_HINT_RESOURCE_TYPE: hint="Type: "+arginfo.hint_string; break;
				};
				if (hint!="")
					_write_string(f,4,hint);

				_write_string(f,3,(i==-1)?"</return>":"</argument>");


			}

			_write_string(f,3,"<description>");
			_write_string(f,3,"</description>");

			_write_string(f,2,"</method>");

		}


		_write_string(f,1,"</methods>");

		List<MethodInfo> signal_list;
		ClassDB::get_signal_list(name,&signal_list,true);

		if (signal_list.size()) {

			_write_string(f,1,"<signals>");
			for(List<MethodInfo>::Element *EV=signal_list.front();EV;EV=EV->next()) {

				_write_string(f,2,"<signal name=\""+EV->get().name+"\">");
				for(int i=0;i<EV->get().arguments.size();i++) {
					PropertyInfo arginfo=EV->get().arguments[i];
					_write_string(f,3,"<argument index=\""+itos(i)+"\" name=\""+arginfo.name+"\" type=\""+Variant::get_type_name(arginfo.type)+"\">");
					_write_string(f,3,"</argument>");
				}
				_write_string(f,3,"<description>");
				_write_string(f,3,"</description>");

				_write_string(f,2,"</signal>");
			}

			_write_string(f,1,"</signals>");
		}


		_write_string(f,1,"<constants>");


		List<String> constant_list;
		ClassDB::get_integer_constant_list(name, &constant_list, true);

		/* constants are sorted in a special way */

		List<_ConstantSort> constant_sort;

		for(List<String>::Element *E=constant_list.front();E;E=E->next()) {
			_ConstantSort cs;
			cs.name=E->get();
			cs.value=ClassDB::get_integer_constant(name, E->get());
			constant_sort.push_back(cs);
		}

		constant_sort.sort();

		for(List<_ConstantSort>::Element *E=constant_sort.front();E;E=E->next()) {

			_write_string(f,2,"<constant name=\""+E->get().name+"\" value=\""+itos(E->get().value)+"\">");
			_write_string(f,2,"</constant>");
		}

		_write_string(f,1,"</constants>");
		_write_string(f,0,"</class>");

		class_list.erase(name);
	}

	_write_string(f,0,"</doc>");
	f->close();
	memdelete(f);

}