#include "Window.h"

#include "Shader.h"
#include "ShaderProgram.h"

#include "Mesh.h"

#include "Camera.h"

#include "Time.h"

#include <iostream>

#include "DrawableObject.h"

int main()
{
    Window window(1680, 1050, "VoxelCraft", GL_FALSE);
    window.setClearColor(0.59765625f, 0.796875f, 0.99609375f, 1.0f);

    Shader vertexShader("vertexShader", GL_VERTEX_SHADER);
    Shader fragmentShader("fragmentShader", GL_FRAGMENT_SHADER);

    ShaderProgram shaderProgram(vertexShader, fragmentShader);
    shaderProgram.bind();

    Camera camera(glm::vec3(0.0f, 0.0f, 0.0f), 70.0f, (GLfloat)window.getWidth() / (GLfloat)window.getHeight(), 0.01f, 1000.0f, shaderProgram, 10.5f, 0.05f);

    /* Chunk */
    enum BlockTypes
    {
        AIR = 0,
        GRASS = 1
    };

    static const GLuint size = 16;

    GLuint blockIDs[size + 1][size + 1][size + 1];

    Mesh mesh;

    Texture texture(shaderProgram, "grass", "outTexture", 0);

    for (GLuint x = 0; x < size; x++)
    {
        for (GLuint y = 0; y < size; y++)
        {
            for (GLuint z = 0; z < size; z++)
            {
                blockIDs[x][y][z] = GRASS;
            }
        }
    }

    std::vector<glm::vec3> positions;

    for (GLuint x = 0; x < size; x++)
    {
        for (GLuint y = 0; y < size; y++)
        {
            for (GLuint z = 0; z < size; z++)
            {
                if (blockIDs[x + 1][y][z] != GRASS)
                {
                    mesh.addData(glm::vec3(1.0f, 0.0f, 1.0f), glm::vec2(0.0f, 1.0f));
                    mesh.addData(glm::vec3(1.0f, 0.0f, 0.0f), glm::vec2(0.0f, 0.0f));
                    mesh.addData(glm::vec3(1.0f, 1.0f, 0.0f), glm::vec2(1.0f, 0.0f));
                    mesh.addData(glm::vec3(1.0f, 1.0f, 1.0f), glm::vec2(1.0f, 1.0f));

                    positions.push_back(glm::vec3(x, y, z));
                }
                if (blockIDs[x - 1][y][z] != GRASS)
                {
                    mesh.addData(glm::vec3(0.0f, 0.0f, 0.0f), glm::vec2(0.0f, 1.0f));
                    mesh.addData(glm::vec3(0.0f, 0.0f, 1.0f), glm::vec2(0.0f, 0.0f));
                    mesh.addData(glm::vec3(0.0f, 1.0f, 1.0f), glm::vec2(1.0f, 0.0f));
                    mesh.addData(glm::vec3(0.0f, 1.0f, 0.0f), glm::vec2(1.0f, 1.0f));

                    positions.push_back(glm::vec3(x, y, z));
                }

                if (blockIDs[x][y + 1][z] != GRASS)
                {
                    mesh.addData(glm::vec3(0.0f, 1.0f, 1.0f), glm::vec2(0.0f, 1.0f));
                    mesh.addData(glm::vec3(1.0f, 1.0f, 1.0f), glm::vec2(0.0f, 0.0f));
                    mesh.addData(glm::vec3(1.0f, 1.0f, 0.0f), glm::vec2(1.0f, 0.0f));
                    mesh.addData(glm::vec3(0.0f, 1.0f, 0.0f), glm::vec2(1.0f, 1.0f));

                    positions.push_back(glm::vec3(x, y, z));
                }
                if (blockIDs[x][y - 1][z] != GRASS)
                {
                    mesh.addData(glm::vec3(0.0f, 0.0f, 0.0f), glm::vec2(0.0f, 1.0f));
                    mesh.addData(glm::vec3(1.0f, 0.0f, 0.0f), glm::vec2(0.0f, 0.0f));
                    mesh.addData(glm::vec3(1.0f, 0.0f, 1.0f), glm::vec2(1.0f, 0.0f));
                    mesh.addData(glm::vec3(0.0f, 0.0f, 1.0f), glm::vec2(1.0f, 1.0f));

                    positions.push_back(glm::vec3(x, y, z));
                }

                if (blockIDs[x][y][z + 1] != GRASS)
                {
                    mesh.addData(glm::vec3(0.0f, 0.0f, 1.0f), glm::vec2(0.0f, 1.0f));
                    mesh.addData(glm::vec3(1.0f, 0.0f, 1.0f), glm::vec2(0.0f, 0.0f));
                    mesh.addData(glm::vec3(1.0f, 1.0f, 1.0f), glm::vec2(1.0f, 0.0f));
                    mesh.addData(glm::vec3(0.0f, 1.0f, 1.0f), glm::vec2(1.0f, 1.0f));

                    positions.push_back(glm::vec3(x, y, z));
                }
                if (blockIDs[x][y][z - 1] != GRASS)
                {
                    mesh.addData(glm::vec3(1.0f, 0.0f, 0.0f), glm::vec2(0.0f, 1.0f));
                    mesh.addData(glm::vec3(0.0f, 0.0f, 0.0f), glm::vec2(0.0f, 0.0f));
                    mesh.addData(glm::vec3(0.0f, 1.0f, 0.0f), glm::vec2(1.0f, 0.0f));
                    mesh.addData(glm::vec3(1.0f, 1.0f, 0.0f), glm::vec2(1.0f, 1.0f));

                    positions.push_back(glm::vec3(x, y, z));
                }
            }
        }
    }

    mesh.setIndices({
        0, 1, 2,
        2, 3, 0,

        4, 5, 6,
        6, 7, 4,

        8, 9, 10,
        10, 11, 8,

        12, 13, 14,
        14, 15, 12,

        16, 17, 18,
        18, 19, 16,

        20, 21, 22,
        22, 23, 20
    });

    mesh.upload();

    DrawableObject block(glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(1.0f, 1.0f, 1.0f), texture, &mesh);
    /* End of chunk */

    Time time;

    while (window.isOpen())
    {
        time.startCounting();

        window.clear();

        camera.update(window, shaderProgram, time.getDeltaTime());

        for (glm::vec3 position : positions)
        {
            block.setPosition(position);

            block.draw(shaderProgram);
        }

        window.update();
    }

    return 0;
}