import cv2
import numpy as np
import functions

#fotograf ozellikleri
heightImg = 300*4
widthImg  = 210*4
#pathImage = "denemeler/100luk_numarali.jpg"
questions=20
choices=6



def reader(pathImage, save_images= True):
#cevap anahtarini dosyadan okuma ve sayiya cevirme
    

#perspektif islemleri icin cozunurluk
    wrap_h = 18*20
    wrap_v = 18*20
    img = pathImage #eger girdi dogrudan np arrayse
#fotonun okunmasi ------------------------------------------------------------------------------------------------
    #img = cv2.imread(pathImage)
    img = cv2.rotate(img, cv2.ROTATE_90_CLOCKWISE)
    img = cv2.resize(img, (widthImg, heightImg)) # RESIZE IMAGE
    imgBiggestContour = img.copy()
    imgFinal = img.copy()
    imgContours = img.copy()
    imgBlank = np.zeros((heightImg,widthImg, 3), np.uint8) 

#donusumler---------------------------------------------------------------------------------
    imgGray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) # CONVERT IMAGE TO GRAY SCALE
    imgBlur = cv2.GaussianBlur(imgGray, (5, 5), 1) # ADD GAUSSIAN BLUR
    imgCanny = cv2.Canny(imgBlur,10,70) # APPLY CANNY 

#CONTOURS-------------------------------------------------------
    contours, hierarchy = cv2.findContours(imgCanny, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE) 
    cv2.drawContours(imgContours, contours, -1, (0, 255, 0), 10) # DRAW ALL DETECTED CONTOURS

#dortgen bulma--------------------------------------------------
    rectCon = functions.rectContour(contours) 
    biggestContour = functions.getCornerPoints(rectCon[0])
    secondContour = functions.getCornerPoints(rectCon[1])
    thirdContour = functions.getCornerPoints(rectCon[2])
    #fourthContour = functions.getCornerPoints(rectCon[3])

#main
    if biggestContour.size != 0 and secondContour.size != 0:
    
        cv2.drawContours(imgBiggestContour, biggestContour,-1,(0,255,0),20) 
        cv2.drawContours(imgBiggestContour, secondContour,-1,(255,0,0),20) #sondk' kalinlik ortada renk 
        cv2.drawContours(imgBiggestContour, thirdContour,-1,(0,0,255),20) #sondk' kalinlik ortada renk 
        #cv2.drawContours(imgBiggestContour, fourthContour,-1,(0,0,20),20) #sondk' kalinlik ortada renk 
    
        biggestContour=functions.reorder(biggestContour)   
    #cevap siklari icin -************************************************************
        pts1 = np.float32(biggestContour) 
        pts2 = np.float32([[0, 0],[wrap_v, 0], [0, wrap_h],[wrap_v, wrap_h]]) 
        matrix = cv2.getPerspectiveTransform(pts1, pts2)
    
        imgWarpColored_1 = cv2.warpPerspective(img, matrix, (wrap_v, wrap_h))
        imgWarpGray_1 = cv2.cvtColor(imgWarpColored_1,cv2.COLOR_BGR2GRAY) 
        imgThresh_1 = cv2.threshold(imgWarpGray_1,0,255,cv2.THRESH_BINARY_INV + cv2.THRESH_OTSU)[1]  

    #second buyuk icin perspektif 
        secondContour=functions.reorder(secondContour)
        pts1_2 = np.float32(secondContour) 
        pts2_2 = np.float32([[0, 0],[wrap_v, 0], [0, wrap_h],[wrap_v, wrap_h]]) 
        matrix_2 = cv2.getPerspectiveTransform(pts1_2, pts2_2)
        imgWarpColored_2 = cv2.warpPerspective(img, matrix_2, (wrap_v, wrap_h))
        imgWarpGray_2 = cv2.cvtColor(imgWarpColored_2,cv2.COLOR_BGR2GRAY) 
        #imgThresh_2 = cv2.threshold(imgWarpGray_2, 170, 255,cv2.THRESH_BINARY_INV )[1] 
        imgThresh_2 = cv2.threshold(imgWarpGray_2,0,255,cv2.THRESH_BINARY_INV + cv2.THRESH_OTSU)[1]  
    
    #student id
        bubbles = functions.split_num(imgThresh_2, 10, 10)
        myPixelVal_2 = functions.pixelVal(10,10,bubbles)
        myPixelVal_2 = functions.id_reorder(myPixelVal_2)
        student_id = functions.id_answers(10,myPixelVal_2)
        #print(student_id)
    
        #soru kisimi
        column_3 = functions.splitColumn(imgThresh_1)
        boxes_1 = functions.splitBoxes(column_3[0])
        boxes_2 = functions.splitBoxes(column_3[1])
        boxes_3 = functions.splitBoxes(column_3[2])
        #boxes_1
        myPixelVal_1 = functions.pixelVal(questions,choices,boxes_1)
        myIndex_1 = functions.user_answers(questions,myPixelVal_1)
                
        #boxes_2
        myPixelVal_2 = functions.pixelVal(questions,choices,boxes_2)
        myIndex_2 = functions.user_answers(questions,myPixelVal_2)
        
        #boxes_3        
        myPixelVal_3 = functions.pixelVal(questions,choices,boxes_3)
        myIndex_3 = functions.user_answers(questions,myPixelVal_3)
        
        
        
        student_idFix = ""
        for number in student_id:
            student_idFix += str(number)
        
        
        
        myIndexs = [myIndex_1,myIndex_2,myIndex_3]
    return  student_idFix, myIndexs

#sonuc = optic1(ans_txt="cevapanahtari.txt",pathImage= "denemeler/100luk_numarali.jpg")
#print(sonuc)