#include "gfx.h"
#include "src/gwin/gwin_class.h"
#include "stdlib.h"
#include "string.h"
#include "jg10.h"

GEventMouse     ev;
GHandle         mainWin, Jg10SelectWidget;

typedef struct jg10WidgetObject_t {
    GWidgetObject w;  // Base Class
} jg10WidgetObject;

GHandle jg10SelectionWidgetGCreate(GDisplay* g, jg10WidgetObject* wo, GWidgetInit* pInit);
#define jg10SelectionWidgetCreate(wo, pInit) jg10SelectionWidgetGCreate(GDISP, wo, pInit)


typedef struct {          // Node properties
  uint8_t num;            // Node number
  gBool check;           // Node needs to be checked or not
  gBool sel;             // Node selected or not
} nodeProps;

nodeProps             jg10Field[JG10_FIELD_WIDTH][JG10_FIELD_HEIGHT];   // jg10 field array
gBool                jg10GameOver                           = gFalse;
const char            *jg10Graph[] = {"background.bmp", "1.bmp","2.bmp","3.bmp","4.bmp","5.bmp","6.bmp","7.bmp","8.bmp", "9.bmp", "10.bmp", "11.bmp", "12.bmp", "13.bmp", "14.bmp", "15.bmp", "16.bmp", "17.bmp", "18.bmp", "19.bmp", "20.bmp"}; // 21 elements (0-20)
gdispImage            jg10Image[JG10_MAX_COUNT];
#define JG10_ANIM_IMAGES 5
#define JG10_ANIM_DELAY 60
const char            *jg10GraphAnim[] = {"a1.bmp","a2.bmp","a3.bmp","a4.bmp","background.bmp"}; // 5 elements (0-4)
gdispImage            jg10ImageAnim[JG10_ANIM_IMAGES];
uint8_t               jg10MaxVal=4;                                     // Max value in field...
gFont font;
#if JG10_SHOW_SPLASH
GTimer                jg10SplashBlink;
gBool                jg10SplashTxtVisible = gFalse;
gdispImage            jg10SplashImage;
#endif


static void initRng(void) {
    srand(gfxSystemTicks());
}

static uint32_t randomInt(uint32_t max) {
    return rand() % max;
}

static int uitoa(unsigned int value, char * buf, int max) {
  int n = 0;
  int i = 0;
  int tmp = 0;

  if (!buf) return -3;
  if (2 > max) return -4;
  i=1;
  tmp = value;
  if (0 > tmp) {
    tmp *= -1;
    i++;
  }
  for (;;) {
    tmp /= 10;
    if (0 >= tmp) break;
    i++;
  }
  if (i >= max) {
    buf[0] = '?';
    buf[1] = 0x0;
    return 2;
  }
  n = i;
  tmp = value;
  if (0 > tmp) {
    tmp *= -1;
  }
  buf[i--] = 0x0;
  for (;;) {
    buf[i--] = (tmp % 10) + '0';
    tmp /= 10;
    if (0 >= tmp) break;
  }
  if (-1 != i) {
    buf[i--] = '-';
  }
  return n;
}

static gBool inRange(int16_t x, int16_t y) {
    if ((x >= 0) && (x < JG10_FIELD_WIDTH) && (y >= 0) && (y < JG10_FIELD_HEIGHT)) return gTrue; else return gFalse;
}

static void clean_SelCheck(void) {
    uint16_t i ,j;
    for (i = 0; i < JG10_FIELD_WIDTH; i++) {
        for (j = 0; j < JG10_FIELD_HEIGHT; j++) {
            jg10Field[i][j].check = gFalse;
            jg10Field[i][j].sel = gFalse;
        }
    }
}

static void remove_Selected(void) {
    uint16_t i ,j, step;
    gTicks delay_start = 0;
    gTicks delay=0;
    for (step = 0; step < JG10_ANIM_IMAGES; step++) {
        delay_start = gfxSystemTicks();
        for (i = 0; i < JG10_FIELD_WIDTH; i++) {
            for (j = 0; j < JG10_FIELD_HEIGHT; j++) {
                if (jg10Field[i][j].sel) {
                    gdispImageDraw(&jg10ImageAnim[step], (i*JG10_CELL_HEIGHT)+1, (j*JG10_CELL_WIDTH)+1, JG10_CELL_WIDTH, JG10_CELL_HEIGHT, 0, 0);
                }
            }
        }
        delay = gfxSystemTicks()-delay_start;
        if (delay <= JG10_ANIM_DELAY) {
            gfxSleepMilliseconds(JG10_ANIM_DELAY-delay);
        }
    }
    for (i = 0; i < JG10_FIELD_WIDTH; i++) {
        for (j = 0; j < JG10_FIELD_HEIGHT; j++) {
            if (jg10Field[i][j].sel) {
                jg10Field[i][j].sel = gFalse;
                jg10Field[i][j].num = 0;
            }
        }
    }
//    gwinRedraw(mainWin);
}

static uint8_t jg10_randomer(uint8_t max, uint8_t th) {
    uint32_t r = randomInt((1<<max)-1);
	
    if (r != 0) {
        for (int8_t i = max; i >= 0; i--) {
            if (r >= (uint32_t)(1<<i)) {
                if ((max-i) >= th) {
                    return randomInt(max-i)+1;
                } else {
                    return randomInt(th)+1;
                }
            }
        }
    }
    return randomInt(max-1)+1;
}

static void movePiecesDown(void) {
    uint8_t tmp = 0;
    gBool needToCheck = gTrue;
    while (needToCheck) {
        needToCheck = gFalse;
        for (int8_t y = (JG10_FIELD_HEIGHT-1); y >= 0; y--) {
            for (uint8_t x = 0; x < JG10_FIELD_WIDTH; x++) {
                if (jg10Field[x][y].num == 0) {
                    // check if there is at least single none empty piece
                    tmp = 0;
                    for (int8_t tmpy = y; tmpy >= 0; tmpy--) {
                        if (jg10Field[x][tmpy].num != 0) tmp++;
                    }
                    if (tmp != 0) {
                        for (int8_t tmpy = y; tmpy > 0; tmpy--) {
                            jg10Field[x][tmpy].num = jg10Field[x][tmpy-1].num;
                        }
                        jg10Field[x][0].num = 0;
                        needToCheck = gTrue;
                    }
                }
            }
        }
    }
    gwinRedraw(mainWin);
    // Add new pieces
    needToCheck = gTrue;
    while (needToCheck) {
        needToCheck = gFalse;
        for (int8_t y = (JG10_FIELD_HEIGHT-1); y >= 0; y--) {
            for (uint8_t x = 0; x < JG10_FIELD_WIDTH; x++) {
                if (jg10Field[x][y].num == 0) {
                    for (int8_t tmpy = y; tmpy > 0; tmpy--) {
                        jg10Field[x][tmpy].num = jg10Field[x][tmpy-1].num;
                    }
                    jg10Field[x][0].num = jg10_randomer(jg10MaxVal, 3);
                    needToCheck = gTrue;
                }
            }
        }
        gwinRedraw(mainWin);
        gfxSleepMilliseconds(50);
    }
}

static gBool checkForPossibleMove(void) {
    gBool canMove = gFalse;
    uint16_t i ,j;
    for (i = 0; i < JG10_FIELD_WIDTH; i++) {
        for (j = 0; j < JG10_FIELD_HEIGHT; j++) {
            if ((inRange(i,j-1) && jg10Field[i][j-1].num == jg10Field[i][j].num) ||
                (inRange(i-1,j) && jg10Field[i-1][j].num == jg10Field[i][j].num) ||
                (inRange(i,j+1) && jg10Field[i][j+1].num == jg10Field[i][j].num) ||
                (inRange(i+1,j) && jg10Field[i+1][j].num == jg10Field[i][j].num)) {
                canMove = gTrue;
                return canMove;
            }
        }
    }
    return canMove;
}

static void printGameOver(void) {
    gdispFillArea(JG10_TOTAL_FIELD_WIDTH, (gdispGetHeight()/2)-10, gdispGetWidth()-JG10_TOTAL_FIELD_WIDTH, 80, GFX_BLACK);
    if (jg10GameOver) {
        gdispDrawString(JG10_TOTAL_FIELD_WIDTH+((gdispGetWidth()-JG10_TOTAL_FIELD_WIDTH)/2)-(gdispGetStringWidth("Game Over", font)/2), gdispGetHeight()/2, "Game Over", font, GFX_WHITE);
    }
}

static void printCongrats(void) {
    char pps_str[3];
    gdispFillArea(JG10_TOTAL_FIELD_WIDTH, (gdispGetHeight()/2)-10, gdispGetWidth()-JG10_TOTAL_FIELD_WIDTH, 80, GFX_BLACK);
    gdispDrawString(JG10_TOTAL_FIELD_WIDTH+((gdispGetWidth()-JG10_TOTAL_FIELD_WIDTH)/2)-(gdispGetStringWidth("Congrats, now try to get", font)/2), gdispGetHeight()/2, "Congrats, now try to get", font, GFX_WHITE);
    uitoa(jg10MaxVal+1, pps_str, sizeof(pps_str));
    gdispDrawString(JG10_TOTAL_FIELD_WIDTH+((gdispGetWidth()-JG10_TOTAL_FIELD_WIDTH)/2)-(gdispGetStringWidth(pps_str, font)/2), (gdispGetHeight()/2)+20, pps_str, font, GFX_RED);
}

static DECLARE_THREAD_FUNCTION(thdJg10, msg) {
    (void)msg;
    uint16_t x,y;
    while (!jg10GameOver) {
        srand(gfxSystemTicks());
        ginputGetMouseStatus(0, &ev);
        if (ev.buttons & GINPUT_MOUSE_BTN_LEFT) {
            x = ev.x/JG10_CELL_WIDTH;
            y = ev.y/JG10_CELL_HEIGHT;
            if (x < JG10_FIELD_WIDTH && y < JG10_FIELD_HEIGHT) {
                while (ev.buttons & GINPUT_MOUSE_BTN_LEFT) { // Wait until release
                    ginputGetMouseStatus(0, &ev);
                }
                if (!jg10Field[x][y].sel) {
                    // Check if we have at least two
                    if ((inRange(x,y-1) && jg10Field[x][y-1].num == jg10Field[x][y].num) ||
                        (inRange(x-1,y) && jg10Field[x-1][y].num == jg10Field[x][y].num) ||
                        (inRange(x,y+1) && jg10Field[x][y+1].num == jg10Field[x][y].num) ||
                        (inRange(x+1,y) && jg10Field[x+1][y].num == jg10Field[x][y].num)) {
                        gwinSetVisible(Jg10SelectWidget, gFalse);
                        clean_SelCheck();
                        jg10Field[x][y].check = gTrue;
                        gwinSetVisible(Jg10SelectWidget, gTrue);
                    }
                } else {
                    // already selected section clicked...
                    jg10Field[x][y].num++;
                    if (jg10Field[x][y].num > jg10MaxVal) {
                        jg10MaxVal = jg10Field[x][y].num;
                        if (jg10MaxVal >= 10) printCongrats();
                        if (jg10MaxVal == 20) { // Just in case someone got so far :D I cannot imaginge though 
                            jg10GameOver = gTrue;
                            printGameOver();
                        }
                    }
                    jg10Field[x][y].sel = gFalse;
                    gwinSetVisible(Jg10SelectWidget, gFalse);
                    remove_Selected();
                    movePiecesDown();
                    if (checkForPossibleMove()) {
                        clean_SelCheck();
                        //gwinRedraw(mainWin);
                    } else {
                        jg10GameOver = gTrue;
                        printGameOver();
                    }
                }
            }
        }
    }
    THREAD_RETURN(0);
}

static void initField(void) {
    jg10MaxVal = 4;
    for (uint8_t x = 0; x < JG10_FIELD_WIDTH; x++) {
        for (uint8_t y = 0; y < JG10_FIELD_HEIGHT; y++) {
          jg10Field[x][y].num = randomInt(jg10MaxVal)+1;
            //jg10Field[x][y].num = 1;      // good for animation testing
            //jg10Field[x][y].num = x+x+5;    // good to get high score fast
            //jg10Field[x][y].num = x+y+5;  // good demo to check out pieces :D
            jg10Field[x][y].check = gFalse;
            jg10Field[x][y].sel = gFalse;
        }
    }
    jg10GameOver = gFalse;
    printGameOver();
}

static void mainWinDraw(GWidgetObject* gw, void* param) {
	(void)param;
	
    for (uint8_t x = 0; x < JG10_FIELD_WIDTH; x++) {
        for (uint8_t y = 0; y < JG10_FIELD_HEIGHT; y++) {
            gdispGImageDraw(gw->g.display, &jg10Image[jg10Field[x][y].num], (x*JG10_CELL_HEIGHT)+1, (y*JG10_CELL_WIDTH)+1, JG10_CELL_WIDTH, JG10_CELL_HEIGHT, 0, 0);
        }
    }
}

static void jg10SelectionWidget_Draw(GWidgetObject* gw, void* param) {
    int16_t x, y;
    gBool needToCheck = gTrue;

	(void)param;

    while (needToCheck) {
        needToCheck = gFalse;
        for (x = 0; x < JG10_FIELD_WIDTH; x++) {
            for (y = 0; y < JG10_FIELD_HEIGHT; y++) {
                if (jg10Field[x][y].check && !jg10Field[x][y].sel) {
                    jg10Field[x][y].sel = gTrue;
                    jg10Field[x][y].check = gFalse;
                    // Up
                    if (inRange(x, y-1) && !jg10Field[x][y-1].sel && (jg10Field[x][y-1].num == jg10Field[x][y].num)) {
                        jg10Field[x][y-1].check = gTrue;
                        needToCheck = gTrue;
                    } else  if (!inRange(x, y-1) || (inRange(x, y-1) && !jg10Field[x][y-1].sel)) {
                        // We need longer line if this is wide corner inside shape
                        if (inRange(x+1, y) && inRange(x+1, y-1) && (jg10Field[x][y].num == jg10Field[x+1][y].num) && (jg10Field[x][y].num == jg10Field[x+1][y-1].num)) {
                            gdispGFillArea(gw->g.display, (x*JG10_CELL_WIDTH)+1, (y*JG10_CELL_HEIGHT)+1, JG10_CELL_WIDTH+2, 2, JG10_SEL_COLOR);
                        } else {
                            gdispGFillArea(gw->g.display, (x*JG10_CELL_WIDTH)+1, (y*JG10_CELL_HEIGHT)+1, JG10_CELL_WIDTH, 2, JG10_SEL_COLOR);
                        }
                    }
                    // Down
                    if (inRange(x, y+1) && !jg10Field[x][y+1].sel && (jg10Field[x][y+1].num == jg10Field[x][y].num)) {
                        jg10Field[x][y+1].check = gTrue;
                        needToCheck = gTrue;
                    } else if (!inRange(x, y+1) || (inRange(x, y+1) && !jg10Field[x][y+1].sel)) {
                        // We need longer line if this is wide corner inside shape
                        if (inRange(x-1, y) && inRange(x-1, y+1) && (jg10Field[x][y].num == jg10Field[x-1][y].num) && (jg10Field[x][y].num == jg10Field[x-1][y+1].num)) {
                            gdispGFillArea(gw->g.display, (x*JG10_CELL_WIDTH)-1, ((y+1)*JG10_CELL_HEIGHT)-1, JG10_CELL_WIDTH+2, 2, JG10_SEL_COLOR);
                        } else {
                            gdispGFillArea(gw->g.display, (x*JG10_CELL_WIDTH)+1, ((y+1)*JG10_CELL_HEIGHT)-1, JG10_CELL_WIDTH, 2, JG10_SEL_COLOR);
                        }
                    }
                    // Left
                    if (inRange(x-1, y) && !jg10Field[x-1][y].sel && (jg10Field[x-1][y].num == jg10Field[x][y].num)) {
                        jg10Field[x-1][y].check = gTrue;
                        needToCheck = gTrue;
                    } else if (!inRange(x-1, y) || (inRange(x-1, y) && !jg10Field[x-1][y].sel)) {
                        // We need longer line if this is wide corner inside shape
                        if (inRange(x, y-1) && inRange(x-1, y-1) && (jg10Field[x][y].num == jg10Field[x][y-1].num) && (jg10Field[x][y].num == jg10Field[x-1][y-1].num)) {
                            gdispGFillArea(gw->g.display, (x*JG10_CELL_WIDTH)+1, (y*JG10_CELL_HEIGHT)-1, 2, JG10_CELL_HEIGHT+2, JG10_SEL_COLOR);
                        } else {
                            gdispGFillArea(gw->g.display, (x*JG10_CELL_WIDTH)+1, (y*JG10_CELL_HEIGHT)+1, 2, JG10_CELL_HEIGHT, JG10_SEL_COLOR);
                        }
                    }
                    // Right
                    if (inRange(x+1, y) && !jg10Field[x+1][y].sel && (jg10Field[x+1][y].num == jg10Field[x][y].num)) {
                        jg10Field[x+1][y].check = gTrue;
                        needToCheck = gTrue;
                    } else if (!inRange(x+1, y) || (inRange(x+1, y) && !jg10Field[x+1][y].sel)) {
                        // We need longer line if this is wide corner inside shape
                        if (inRange(x, y+1) && inRange(x+1, y+1) && (jg10Field[x][y].num == jg10Field[x][y+1].num) && (jg10Field[x][y].num == jg10Field[x+1][y+1].num)) {
                            gdispGFillArea(gw->g.display, ((x+1)*JG10_CELL_WIDTH)-1, (y*JG10_CELL_HEIGHT)+1, 2, JG10_CELL_HEIGHT+2, JG10_SEL_COLOR);
                        } else {
                            gdispGFillArea(gw->g.display, ((x+1)*JG10_CELL_WIDTH)-1, (y*JG10_CELL_HEIGHT)+1, 2, JG10_CELL_HEIGHT, JG10_SEL_COLOR);
                        }
                    }
                }
            }
        }
    }
}

static const gwidgetVMT jg10SelectionWidgetVMT = {
    {
        "jg10SelectionWidget",        // The classname
        sizeof(jg10WidgetObject),     // The object size
        _gwidgetDestroy,              // The destroy routine
        _gwidgetRedraw,               // The redraw routine
        0,                            // The after-clear routine
    },
    jg10SelectionWidget_Draw,         // The default drawing routine
    #if GINPUT_NEED_MOUSE
        {
            0,                        // Process mouse down events
            0,                        // Process mouse up events
            0,                        // Process mouse move events
        },
    #endif
    #if GINPUT_NEED_KEYBOARD || GWIN_NEED_KEYBOARD
        {
            0                         // Process keyboard events
        },
    #endif
    #if GINPUT_NEED_TOGGLE
        {
            0,                        // Toggle role
            0,                        // Assign Toggles
            0,                        // Get Toggles
            0,                        // Process toggle off events
            0,                        // Process toggle on events
        },
    #endif
    #if GINPUT_NEED_DIAL
        {
            0,                        // No dial roles
            0,                        // Assign Dials
            0,                        // Get Dials
            0,                        // Process dial move events
        },
    #endif
};

GHandle jg10SelectionWidgetGCreate(GDisplay* g, jg10WidgetObject* wo, GWidgetInit* pInit) {
    if (!(wo = (jg10WidgetObject*)_gwidgetCreate(g, &wo->w, pInit, &jg10SelectionWidgetVMT))) {
        return 0;
    }
    gwinSetVisible((GHandle)wo, pInit->g.show);
    return (GHandle)wo;
}


static void createMainWin(void) {
    GWidgetInit wi;
    gwinWidgetClearInit(&wi);
    // Container - mainWin
    wi.g.show = gFalse;
    wi.g.x = 0;
    wi.g.y = 0;
    wi.g.width = gdispGetWidth();
    wi.g.height = gdispGetHeight();
    wi.g.parent = 0;
    wi.text = "Container";
    wi.customDraw = mainWinDraw;
    wi.customParam = 0;
    wi.customStyle = 0;
    mainWin = gwinContainerCreate(0, &wi, 0);

    // create selection widget
    wi.g.show = gFalse;
    wi.g.x = 0;
    wi.g.y = 0;
    wi.g.width = 272;
    wi.g.height = 480;
    wi.g.parent = mainWin;
    wi.customDraw = jg10SelectionWidget_Draw;
    Jg10SelectWidget = jg10SelectionWidgetCreate(0, &wi);
}

void guiCreate(void) {
    GWidgetInit wi;
    gwinWidgetClearInit(&wi);
    createMainWin();
    gwinHide(mainWin);
    gwinShow(mainWin);
}

void jg10Start(void) {
#if JG10_SHOW_SPLASH
    gtimerStop(&jg10SplashBlink);
    gdispClear(GFX_BLACK);
#endif
    initField();
    guiCreate();
    gfxThreadCreate(0, 1024, NORMAL_PRIORITY, thdJg10, 0);
    while (!jg10GameOver) {
        gfxSleepMilliseconds(100);
    }
}

void jg10Init(void) {
    initRng();
    for (uint8_t i = 0; i < JG10_MAX_COUNT; i++) {
         gdispImageOpenFile(&jg10Image[i], jg10Graph[i]);
         gdispImageCache(&jg10Image[i]);
    }
    for (uint8_t i = 0; i < JG10_ANIM_IMAGES; i++) {
         gdispImageOpenFile(&jg10ImageAnim[i], jg10GraphAnim[i]);
         gdispImageCache(&jg10ImageAnim[i]);
    }
    font = gdispOpenFont("DejaVuSans16_aa");
}

#if JG10_SHOW_SPLASH
static void jg10SplashBlinker(void* arg) {
    (void)arg;
    jg10SplashTxtVisible = !jg10SplashTxtVisible;
    if (jg10SplashTxtVisible) {
        gdispImageOpenFile(&jg10SplashImage, "splashtxt.bmp");
    } else {
        gdispImageOpenFile(&jg10SplashImage, "splashclr.bmp");
    }
    gdispImageDraw(&jg10SplashImage, (gdispGetWidth()/2)-150+106, (gdispGetHeight()/2)-100+168, 89, 9, 0, 0);
    gdispImageClose(&jg10SplashImage);
}

void jg10ShowSplash(void) {
    gdispImageOpenFile(&jg10SplashImage, "splash.bmp");
    gdispImageDraw(&jg10SplashImage, (gdispGetWidth()/2)-150, (gdispGetHeight()/2)-100, 300, 200, 0, 0);
    gdispImageClose(&jg10SplashImage);
    gtimerStart(&jg10SplashBlink, jg10SplashBlinker, 0, gTrue, 400);
}
#endif