#pragma once

#include <memory>
#include <Buffer.hpp>
#include <ncurses/ncurses.hpp>

namespace groove {

	enum class Mode {
		INSERT,
		EDIT,
		SAVE,
		QUIT
	};

	class Editor {
	private:
		int x, y;
		int offset;
		char lastChar = 0;
		std::unique_ptr<Buffer> buffer;
		Mode mode_;
		std::string clipboard = "";
		std::string filename;

		bool load();
		bool save();
		void status();
		void scrollUp() {
			if (this->y < this->offset && this->offset > 0)
				this->offset--;
		}
		void scrollDown() {
			if (this->y >= LINES - 1)
				this->offset++;
		}
		void left() {
			if (this->x - 1 >= 0)
				this->x--;
		}
		void right() {
			if (this->x + 1 <= COLS && this->x + 1 <= this->buffer->linebuffer().at(this->y).length())
				this->x++;
		}
		void up() {
			if (this->y - 1 >= 0)
				this->y--;
			else {
				return;
			}
			if (this->x >= this->buffer->linebuffer().at(this->y).length()) {
				int length = this->buffer->linebuffer().at(this->y).length();
				this->x = length > 0 ? length - 1 : 0;
			}
			this->scrollUp();
		}
		void down() {
			if (this->y + 1 < this->buffer->linebuffer().size())
				this->y++;
			else {
				return;
			}
			if (this->x >= this->buffer->linebuffer().at(this->y).length()) {
				int length = this->buffer->linebuffer().at(this->y).length();
				this->x = length > 0 ? length - 1 : 0;
			}
			this->scrollDown();
		}
	public:
		Editor() : x(0), y(0), buffer(std::make_unique<Buffer>()), mode_(Mode::EDIT), filename("unbenannt"),
				offset(0) {
			this->buffer->insert("");
		}
		Editor(std::string file);
		Mode mode() {
			return this->mode_;
		}
		void input(int c);
		void render();
		static int Digits(int number);
	};

}