import random
import numpy as np
from PIL import Image
import os
from uuid import uuid4
from django.utils.deconstruct import deconstructible
from django.core.files import File
from PIL import Image
from io import BytesIO

from turismoREST import settings


def vectorImagen(n):
    ubica2 = 0
    M = np.zeros((300, 300), dtype=np.uint8)
    for i in range(1, 11):
        aux2 = ubica2
        ubica2 = i * 30
        ubica = 0
        for j in range(1, 11):
            r = random.randint(0, n)
            aux = ubica
            ubica = j * 30
            M[aux2:ubica2, aux:ubica] = r
    return M


def imagenPerfil(username):
    M = np.zeros((300, 300, 3), dtype=np.uint8)
    M[:, :, 0] = vectorImagen(128)
    M[:, :, 1] = vectorImagen(128)
    M[:, :, 2] = vectorImagen(128)
    #path = '/home/wtredata/kotti/api/Devmaster/Media/'
    path = settings.MEDIA_ROOT
    nombre = 'perfil/'+str(username)+'.png'
    #nombre = 'Media/perfil/' + str(username) + '.png'
    pil_img = Image.fromarray(M)
    pil_img.save(path+'/'+nombre)
    #cv2.imwrite(nombre, M)

    return nombre

def compress(image):
    im = Image.open(image)
    width, height = im.size

    if (width > height):
        if(width > 1024):
            height = height*((width-1024)/width)
            width = 1024

    elif (height > width):
        if(height > 1024):
            width = width*((height-1024)/height)
            height = 1024

    elif (height == width):
        if(width > 1024):
            width = 1024
            height = 1024

    im = im.resize((width, height))
    im_io = BytesIO()

    if im.mode != 'RGB':
        im = im.convert('RGB')
        im.save(im_io, 'PNG', quality=90)
    else:
        im.save(im_io, 'JPEG', quality=90)
    new_image = File(im_io, name=image.name)
    return new_image

@deconstructible
class UploadToPathAndRename(object):

    def __init__(self, path):
        self.sub_path = path

    def __call__(self, instance, filename):
        ext = filename.split('.')[-1]
        # get filename
        if instance.pk:
            filename = '{}.{}'.format(instance.pk, ext)
        else:
            # set filename as random string
            filename = '{}.{}'.format(uuid4().hex, ext)
        # return the whole path to the file
        return os.path.join(self.sub_path, filename)