/*
AE\Mod Installer.

Needs getPackages() now!
*/

#include <string>
//#include <string.h>
#include <cctype>
#include <iostream>
#include "methods.h"
#include <vector>
#include <fstream>

#include <errno.h>
#ifdef WIN32
#include "Include\dirent.h"
#else
#include <dirent.h> //??? is this included for Macs?
#endif
#include <stdio.h>
#include <stdlib.h>


using namespace std;
bool FALSE = 0;
bool TRUE = 0;


int main(void)
{

	//	SetConsoleTitle("AE Installer"); windows junk, convert to SDL
	//	system("color 0A"); 

	cout << "\nWelcome to the AE installer!\n";

	cout << "\nWhat would you like to do?\n";

	return mainMenu();
}

vector<ModPackage> getPackages(void) {
	vector<ModPackage> packages;
	packages.reserve(256); //thats 63 or 64 pointers to packages...i think. :P Reserving this improves performance when we add new pointers

	fstream file;

#ifdef WIN32
	string path = "K:\\Oni\\edition\\install\\packages"; //only for my build. :P
#else
	string path = "K:\\Oni\\edition\\install\\packages"; //change this, 'scen.
#endif

	string filename = "\0";
	string MODINFO_CFG = "\\Mod_Info.cfg";



	DIR *pdir;
	struct dirent *pent;

	pdir = opendir( path.c_str() ); //"." refers to the current dir
	if (!pdir){
		printf ("opendir() failure; terminating");
		exit(1);
	}
	errno=0; 

	while (( pent = readdir(pdir) )){

		filename = path + '\\' + pent->d_name + MODINFO_CFG;
		file.open(filename.c_str());

		//cout << filename << "\n";

		if(!file.fail() )
		{
			//file.open(filename.c_str(), fstream::out);

			//do stuff like adding to vector :P

			//would prefer to push a pointer to a package, but this will do for now
			packages.push_back( fileToModPackage(file) );

		}	
		file.close();
		file.clear();

	}


	if (errno){
		printf ("readdir() failure; terminating");
		exit(1);
	}
	closedir(pdir);


	return packages;
}

ModPackage fileToModPackage(fstream &file) {
	/*
		This converts a file to a ModPackage struct.

		A few notes...
			"iter" is the current word we are on. I should have named it "token" or something, but I don't have multiple iterators, so its ok.
			I refer to (*iter) at the beginning of each if statement block. I could probably store it as a variable, but I'm pretty sure that dereferencing a pointer\iterator isn't much slower than reading a variable.
	*/
	ModPackage package;
	string line;
	static string NameOfMod = "NameOfMod";	//used for comparing to the current token...
	static string SLASHSLASH = "//";		//I could have done it in reverse (*iter).compare("ModString") or  
	static string ARROW = "->";				//did something like "ModString".compare(*iter), and it would have been
	static string ModString = "ModString";	//functionably the same. 
	static string HasOnis = "HasOnis";
	static string HasDeltas = "HasDeltas";
	static string HasBSL = "HasBSL";
	static string HasDats = "HasDats";
	static string IsEngine = "IsEngine";
	static string Readme = "Readme";
	static string GlobalNeeded = "GlobalNeeded";
	static string Category = "Category";
	static string Creator = "Creator";
	while (! file.eof() )
	{
		getline (file,line);
		vector<string> tokens; 
		vector<string>::iterator iter;
		Tokenize(line, tokens);					//string to vector of "words"
		if (tokens.capacity() >= 2) {			//make sure they are using enough stuff
			iter = tokens.begin();				//what word we are on, starts at first word
			/*
			if (!AEInstallVersion.compare(*iter))
			If mod is too old, skip this mod.
			*/
			/*else*/if (!NameOfMod.compare(*iter))  {	//if it contains the name
				for ( ; iter !=tokens.end() && SLASHSLASH.compare(*iter); iter++) {	//interates through the words, ends if it reaches the end of the line or a "//" comment
					if (ARROW.compare(*iter) && NameOfMod.compare(*iter)) {			//ignores "->" and "NameOfMod"
						//cout << *iter; 
						//cout << " ";
						package.name += *iter + " ";
					}
				}
				
			}
			else if (!ModString.compare(*iter)) {
				iter++; iter++;
				package.modStringName = *iter;
				iter++;
				package.modStringVersion = atoi((*iter).c_str());
			}
			else if (!HasOnis.compare(*iter)) {
				iter++; iter++;  
				if (toupper((*iter)[0]) + toupper((*iter)[1]) + toupper((*iter)[2]) == 'Y' + 'E' + 'S') package.hasOnis = 1; //Gotta love c++'s lack of a standard case-insensitive string comparer...I know my implementation here sucks. I need to change it to check each character one by one. At the moment, using "YFR" would probably set it off. :<
			}
			else if (!HasBSL.compare(*iter)) {
				iter++; iter++;  
				if (toupper((*iter)[0]) + toupper((*iter)[1]) + toupper((*iter)[2]) == 'Y' + 'E' + 'S') package.hasBSL = 1;
			}
			else if (!HasDeltas.compare(*iter)) {
				iter++; iter++;  
				if (toupper((*iter)[0]) + toupper((*iter)[1]) + toupper((*iter)[2]) == 'Y' + 'E' + 'S') package.hasDeltas = 1;
			}
			else if (!HasDats.compare(*iter)) {
				iter++; iter++;  
				if (toupper((*iter)[0]) + toupper((*iter)[1]) + toupper((*iter)[2]) == 'Y' + 'E' + 'S') package.hasDats = 1;
			}
			else if (!IsEngine.compare(*iter)) {
				iter++; iter++;  
				if (toupper((*iter)[0]) + toupper((*iter)[1]) + toupper((*iter)[2]) == 'Y' + 'E' + 'S') package.isEngine = 1;
			}
			else if (!GlobalNeeded.compare(*iter)) {
				iter++; iter++;  
				if (toupper((*iter)[0]) + toupper((*iter)[1]) + toupper((*iter)[2]) == 'Y' + 'E' + 'S') package.globalNeeded = 1;
				else if (toupper((*iter)[0]) + toupper((*iter)[1]) == 'N' + 'O') package.globalNeeded = 1; //Really the only place where checking for "No" is important atm.
			}
			else if (!Category.compare(*iter))  {	
				for ( ; iter !=tokens.end() && SLASHSLASH.compare(*iter); iter++) {	//interates through the words, ends if it reaches the end of the line or a "//" comment
					if (ARROW.compare(*iter) && Category.compare(*iter)) {			//ignores "->" and "Category"
						//cout << *iter; 
						//cout << " ";
						package.category += *iter + " ";
					}
				}
			}
			else if (!Creator.compare(*iter))  {	//if it contains the name
				for ( ; iter !=tokens.end() && SLASHSLASH.compare(*iter); iter++) {	//interates through the words, ends if it reaches the end of the line or a "//" comment
					if (ARROW.compare(*iter) && Creator.compare(*iter)) {			//ignores "->" and "Category"
						//cout << *iter; 
						//cout << " ";
						package.creator += *iter + " ";
					}
				}
			}
			else if (!Readme.compare(*iter))  {	//if it contains the name
				for ( ; iter !=tokens.end() && SLASHSLASH.compare(*iter); iter++) {	//interates through the words, ends if it reaches the end of the line or a "//" comment
					if (ARROW.compare(*iter) && Readme.compare(*iter)) {			//ignores "->" and "Category"
						//cout << *iter; 
						//cout << " ";
						package.readme += *iter + " ";
					}
				}
			}
		}

	}
	package.doOutput();
	return package;
}

int mainMenu(void) {
	int choice = '0';
	bool ok = FALSE;
	cout << "1. Install new packages\n";
	cout << "2. Uninstall packages\n";
	cout << "3. See what is installed\n";
	cout << "4. About AE\n";
	cout << "5. Quit\n\n";

	do {
		ok = TRUE;
		choice = cin.get();
		cin.ignore(1);
		switch(choice) {
			case '1':
				installPackages();
				break;
			case '2':
				uninstallPackages();
				break;
			case '3':
				//listInstalledPackages();
				break;
			case '5':
				return 0;
			default:
				ok = FALSE;
		}
	} while(ok == FALSE);
	return 0;
}


void installPackages() {
	ModPackage package;
	vector<string> installed_packages;
	vector<ModPackage> packages; // = getPackages()
	vector<ModPackage>::iterator iter;
	iter = packages.begin();

	getPackages();

	if (packages.empty()) {
		cout << "Error: You have no packages!\n";
		return;
	}

	cout << "Detecting installed packages...\n";

	for(int i = 0; i < packages.size();) {
		package = *iter;
		if(!package.isInstalled){
			packages.erase(iter);
		}
		else { 
			i++;
			iter++;
		}

	}

	if (packages.empty()) {
		cout << "Error: You have no installed packages!\n";
		return;
	}

	//listInstalledPackages(packages);

}
void uninstallPackages() {
	;
}

void getInstalledPackages() {
	;
}