import multiprocessing
import glob
import time
import json
from tqdm import tqdm
from os.path import join as pjoin, exists
import cv2
import os
import shutil

from detect_merge.merge import reassign_ids
import detect_compo.ip_region_proposal as ip
from detect_merge.Element import Element
import detect_compo.lib_ip.ip_preprocessing as pre
import detect_classify.classification as clf
import torch
import numpy as np
from torchvision import models
from torch import nn
import pandas as pd
import csv
import re
import openai
import random
from PIL import Image

def resize_height_by_longest_edge(img_path, resize_length=800):
    org = cv2.imread(img_path)
    height, width = org.shape[:2]
    if height > width:
        return resize_length
    else:
        return int(resize_length * (height / width))


if __name__ == '__main__':

    input_img_root = "./input_examples/"
    output_root = "./result_classification"
    segment_root = '../scrutinizing_alexa/txt'

    if os.path.exists(output_root):
        shutil.rmtree(output_root)
    os.makedirs(output_root)

    image_list = os.listdir(input_img_root)

    input_imgs = [input_img_root + image_name for image_name in image_list]

    key_params = {'min-grad': 4, 'ffl-block': 5, 'min-ele-area': 50, 'merge-contained-ele': True,
                  'max-word-inline-gap': 10, 'max-line-ingraph-gap': 4, 'remove-top-bar': False}

    is_ip = True
    is_clf = False
    is_ocr = True
    is_merge = True
    is_classification = True

    # Load deep learning models in advance
    compo_classifier = None
    if is_ip and is_clf:
        compo_classifier = {}
        from cnn.CNN import CNN
        # compo_classifier['Image'] = CNN('Image')
        compo_classifier['Elements'] = CNN('Elements')
        # compo_classifier['Noise'] = CNN('Noise')
    ocr_model = None
    if is_ocr:
        import detect_text.text_detection as text

    # set the range of target inputs' indices
    num = 0
    # start_index = 30800  # 61728
    # end_index = 100000

    img_time_cost_all = []
    ocr_time_cost_all = []
    ic_time_cost_all = []
    ts_time_cost_all = []
    cd_time_cost_all = []

    resize_by_height = 800
    for input_img in input_imgs:

        output_data = pd.DataFrame(columns=['screenshot', 'id', 'label', 'index', 'text', 'sentences'])

        this_img_start_time = time.clock()

        resized_height = resize_height_by_longest_edge(input_img, resize_by_height)
        index = input_img.split('/')[-1][:-4]

        if index != "1-1" and index != "1-2":
            continue

        if is_ocr:
            os.makedirs(pjoin(output_root, 'ocr'), exist_ok=True)
            this_ocr_time_cost = text.text_detection(input_img, output_root, show=False, method='paddle')
            ocr_time_cost_all.append(this_ocr_time_cost)

        if is_ip:
            os.makedirs(pjoin(output_root, 'ip'), exist_ok=True)
            this_cd_time_cost = ip.compo_detection(input_img, output_root, key_params,  classifier=compo_classifier, resize_by_height=resized_height, show=False)
            cd_time_cost_all.append(this_cd_time_cost)

        if is_merge:
            import detect_merge.merge as merge

            os.makedirs(pjoin(output_root, 'merge'), exist_ok=True)
            compo_path = pjoin(output_root, 'ip', str(index) + '.json')
            ocr_path = pjoin(output_root, 'ocr', str(index) + '.json')
            board_merge, components_merge = merge.merge(input_img, compo_path, ocr_path, pjoin(output_root, 'merge'), is_remove_top_bar=key_params['remove-top-bar'], show=False)
            # ic_time_cost_all.append(this_ic_time_cost)
            # ts_time_cost_all.append(this_ts_time_cost)

        if is_classification:

            os.makedirs(pjoin(output_root, 'classification'), exist_ok=True)
            merge_path = pjoin(output_root, 'merge', str(index) + '.json')
            merge_json = json.load(open(merge_path, 'r'))
            os.makedirs(pjoin(output_root, 'classification', 'GUI'), exist_ok=True)
            this_time_cost_ic, this_time_cost_ts, output_data, output_board = clf.compo_classification(input_img, output_root, segment_root, merge_json, output_data, resize_by_height=resize_by_height)

            ic_time_cost_all.append(this_time_cost_ic)
            ts_time_cost_all.append(this_time_cost_ts)

        this_img_time_cost = time.clock() - this_img_start_time
        img_time_cost_all.append(this_img_time_cost)
        print("time cost for this image: %2.2f s" % this_img_time_cost)

        num += 1

        if os.path.isfile(output_root + '/output.csv'):
            output_data.to_csv(output_root + '/output.csv', index=False, mode='a', header=False)
        else:
            output_data.to_csv(output_root + '/output.csv', index=False, mode='w')

    avg_ocr_time_cost = sum(ocr_time_cost_all) / len(ocr_time_cost_all)
    avg_cd_time_cost = sum(cd_time_cost_all) / len(cd_time_cost_all)
    avg_ic_time_cost = sum(ic_time_cost_all) / len(ic_time_cost_all)
    avg_ts_time_cost = sum(ts_time_cost_all) / len(ts_time_cost_all)
    avg_time_cost = sum(img_time_cost_all)/len(img_time_cost_all)
    print("average text extraction time cost for this app: %2.2f s" % avg_ocr_time_cost)
    print("average widget detection time cost for this app: %2.2f s" % avg_cd_time_cost)
    print("average icon classification time cost for this app: %2.2f s" % avg_ic_time_cost)
    print("average text selection processing time cost for this app: %2.2f s" % avg_ts_time_cost)
    print("average screenshot processing time cost for this app: %2.2f s" % avg_time_cost)