#include <stdio.h>
#include <sys/time.h>

#include <jni.h>
#include <android/log.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <GLES/gl.h>

#include "main.h"
#include "Pacman.h"

float enemyRect[18] = {
    0, 1, 0,
    0, 0, 0,
    1, 0, 0,
    0, 1, 0,
    1, 0, 0,
    1, 1, 0
};

int pacmanDirection = DIR_Y;
int pacmanMoveValue = VALUE_POSITIVE;

Pacman pacman;

static void printGLString(const char *name, GLenum s) {
    const char *v = (const char *) glGetString(s);
    LOGI("GL %s = %s\n", name, v);
}

static void checkGlError(const char* op) {
    for (GLint error = glGetError(); error; error = glGetError()) {
        LOGE("after %s() glError (0x%x)\n", op, error);
    }
}

/**
 * Initialize the GL subsystem
 */
void Java_com_wiagames_pacman_PacmanRenderer_nativeInit(JNIEnv* env) {
      printGLString("Version", GL_VERSION);
      printGLString("Vendor", GL_VENDOR);
      printGLString("Renderer", GL_RENDERER);
      printGLString("Extensions", GL_EXTENSIONS);

      glEnableClientState(GL_VERTEX_ARRAY);
      glEnableClientState(GL_TEXTURE_COORD_ARRAY);
      glEnable(GL_BLEND);
      glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
      glEnable(GL_TEXTURE_2D);
      glClearColor(0,0,0,0);
      glColor4f(1,1,1,1);
      glDisable(GL_DEPTH_TEST);
      glDisable(GL_CULL_FACE);

      LOGE("Native start");
}

/**
 * Resize window
 */
void Java_com_wiagames_pacman_PacmanRenderer_nativeResize(JNIEnv* env,
        jobject thiz, jint w, jint h) {
      LOGI("nativeResize (%i,%i)", w, h);
      if (h == 0) {
        h = 1;
      }

      glViewport(0, 0, w, h);
      checkGlError("glViewport");
      glMatrixMode(GL_PROJECTION);
      const float ratio=w/(float)h;
      glLoadIdentity();
      glOrthof(0, 15, 15/ratio, 0, -1, 1);
      checkGlError("glViewport");
      glMatrixMode(GL_MODELVIEW);
}

/**
 * Finalize the graphics state
 */
void Java_com_wiagames_pacman_PacmanRenderer_nativeDone(JNIEnv* env) {
    // TODO
}

/**
 * Pause event from Android activity lifecycle loop
 */
void Java_com_wiagames_PacmanGLSurfaceView_nativePause(JNIEnv* env) {
    LOGE("Pause");
}

/**
 * Move the pacman & the enemy
 */
//void moveObjects() {
//    struct timeval tv;
//    struct timezone tz;
//
//    gettimeofday(&tv, &tz);
//
//    if (tvSet) {
//        if (tv.tv_usec - lastTv.tv_usec < 1000) {
//            return;
//        }
//    } else {
//        tvSet = TRUE;
//    }
//
//    lastTv = tv;
//
//    movePlayer(pacmanRect, pacmanDirection, pacmanMoveValue);
//}

/**
 * Draw the given object
 */
void drawObject(const GameObject &object) {
    glVertexPointer(3, GL_FLOAT, 0, object.vertexArray);
    glDrawArrays(GL_TRIANGLES, 0, object.vertexCount);
}

/**
 * Draw the objects in the scene
 */
void drawObjects() {
    drawObject(pacman);
}

/**
 * Render the next frame
 */
void Java_com_wiagames_pacman_PacmanRenderer_nativeRender(JNIEnv* env) {
      glClear(GL_COLOR_BUFFER_BIT);
      glLoadIdentity();

      glPushMatrix();
      drawObjects();
      glPopMatrix();
}

/**
 * Move down event
 */
void Java_com_wiagames_pacman_PacmanGLSurfaceView_nativeDown(JNIEnv* env) {
      LOGE("DOWN");

      pacmanDirection = DIR_Y;
      pacmanMoveValue = VALUE_POSITIVE;
}

/**
 * Move up event
 */
void Java_com_wiagames_pacman_PacmanGLSurfaceView_nativeUp(JNIEnv* env) {
      LOGE("UP");

      pacmanDirection = DIR_Y;
      pacmanMoveValue = VALUE_NEGATIVE;
}

/**
 * Move down event
 */
void Java_com_wiagames_pacman_PacmanGLSurfaceView_nativeLeft(JNIEnv* env) {
      LOGE("LEFT");

      pacmanDirection = DIR_X;
      pacmanMoveValue = VALUE_NEGATIVE;
}

/**
 * Move down event
 */
void Java_com_wiagames_pacman_PacmanGLSurfaceView_nativeRight(JNIEnv* env) {
      LOGE("RIGHT");

      pacmanDirection = DIR_X;
      pacmanMoveValue = VALUE_POSITIVE;
}

// Move the player
void movePlayer(float *player, int direction, int value) {
    for (int i = 0; i < 18; i++) {
        if (direction == DIR_Y) {
            if (i != 1 && i != 4 && i != 7 && i != 10 && i != 13 && i != 16) {
                LOGE("Skipping x or z coordinate");
                continue;
            }
        } else if (direction == DIR_X) {
            if (i != 0 && i != 3 && i != 6 && i != 9 && i != 12 && i != 15) {
                LOGE("Skipping y or z coordinate");
                continue;
            }
        }

        player[i] += value;
    }
}