#include "textviewer.h"

void TextViewer::Draw(TextEngine* t) {
	t->renderText(8.0f, 8.0f, 0.5f, 0.5f, false, std::string("Current File:" + path).c_str());
	
	for(int i = textoffset; i < lineEntries.size(); i++) {
		if(i == currentindex) {
			t->renderText(8.0f, (16.0f * i) - (textoffset * 16.0f) + 16.0f, 0.5f, 0.5f, false, std::string(">" + lineEntries[i]).c_str());
		} else {
			t->renderText(8.0f, (16.0f * i) - (textoffset * 16.0f) + 16.0f, 0.5f, 0.5f, false, lineEntries[i].c_str());
		}
	}
		
	if(lineEntries.size() <= 0) {
		t->renderText(8.0f, 32.0f, 0.5f, 0.5f, false, "File is empty!");
	}
}

bool TextViewer::Update(u32 key) {
	//Exit viewer
	if(key & KEY_B) {
		return false;
	}
		
	if(key & KEY_UP) {
		//Easy fix until i'm bothered to fix the issue
		if(currentindex < 0 | textoffset < 0) {
			currentindex = 0;
			textoffset = 0;
		}
		
		if(textoffset != 0) {
			textoffset -= 1;
			currentindex -= 1;
		}
		
		if(currentindex != 0) {
			currentindex -= 1;
		}
	}
	
	if(key & KEY_DOWN) {
		if(currentindex == 13 + textoffset) {
			textoffset += 1;
		}
		
		if(currentindex != lineEntries.size() - 1) {
			currentindex += 1;
		}
	}
	return true;
}

void TextViewer::Init() {	
	std::ifstream input( path );
	for( std::string line; getline( input, line ); )
	{
		lineEntries.push_back(line);
	}
}

void TextViewer::Cleanup() {
	lineEntries.clear();
}