from re import split

from flask import Flask, request, redirect, url_for, flash, render_template, send_from_directory, abort, Response
from random import randint
import cv2
import io
import numpy as np
import json

import urllib

from Searcher import Searcher
from GEMSearcher import GEMSearcher
import WebAppSettings as settings
import uuid
import requests
import os, os.path
from PIL import Image
import tornado.wsgi
import tornado.httpserver
import argparse
import base64

app = Flask(__name__)

security_id = 'FA6mMmeWZ8JjWKz5'


@app.route('/bcirtest/')
def api_root():
    print('index_with_randoms.html')
    random_ids = []
    for i in range(0, 15):
        random_ids.append(searcher.get_id(randint(0, 600)))
    return render_template('index_with_randoms.html', random_ids=random_ids)


def url_to_file(url):
    dest_file = uuid.uuid4().hex + ".png"
    dest_path = settings.logs + "/" + dest_file
    req = urllib.request.Request(
        url,
        data=None,
        headers={
            'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.47 Safari/537.36'
        }
    )
    resp = urllib.request.urlopen(req)
    image = np.asarray(bytearray(resp.read()), dtype="uint8")
    decoded = cv2.imdecode(image, cv2.IMREAD_COLOR)
    cv2.imwrite(dest_path, decoded)
    #im = Image.fromarray(image)
    #im.save(dest_path)
    return dest_path


def post_to_file(image):
    dest_file = uuid.uuid4().hex + ".png"
    dest_path = settings.logs + "/" + dest_file
    image.save(dest_path)
    return  dest_path

def base64_to_file(image_base64):
    dest_file = uuid.uuid4().hex + ".png"
    dest_path = settings.logs + "/" + dest_file
    with open(dest_path, "wb") as image_file:
        byte_content = base64.b64decode(image_base64)
        image_file.write(byte_content)
    return  dest_path


def get_res(results, query_url=None):
    if query_url is not None:
        return render_template('search.html', results=results, query_url=query_url)
    elif results is None:
        results = '{"classname":"Unknown"}'
    else:
        results = '{"classname":"' + results[0][0] + '", "conf":' + str(results[0][1]) + '}'
    print(results)
    json_res = json.dumps(results)
    print(json_res)

    return json_res


@app.route('/bcirtest/searchById')
def search_by_id():
    id = request.args.get('id')
    rescorer = False
    lf_impl = 'ORB'
    if request.args.get("rescorer") == 'true':
        rescorer = True

    if request.args.get("lf_impl") == 'beblid':
        lf_impl = 'BEBLID'
    elif request.args.get("lf_impl") == 'latch':
        lf_impl = 'LATCH'
    #results = searcher.search_by_id(id, settings.k, rescorer, lf_impl)
    results = searcher.search_by_id(id, settings.k)
    query_url = None
    if request.args.get("tohtml") is not None:
        query_url = id + ".jpg"
    return get_res(results, query_url)


@app.route('/bcirtest/searchByImg', methods=['POST'])
def search_by_img():
    if 'image' not in request.files:
        return Response(json.dumps("Error, unable to get the image"), status=401, mimetype='application/json')

    sec_id = request.form.get("securityID")
    #if sec_id != security_id:
    #    return Response(json.dumps("Error 401, not authorized"), status=401, mimetype='application/json')


    file = request.files['image']
    img_file = post_to_file(file)
    rescorer = False
    lf_impl = 'ORB500'
    if request.form.get("rescorer") == 'true':
        rescorer = True
    if request.form.get("lf_impl") == 'beblid':
        lf_impl = 'BEBLID'
    elif request.form.get("lf_impl") == 'latch':
        lf_impl = 'LATCH'
    elif request.form.get("lf_impl") == 'orb':
        lf_impl = 'ORB'
    #dest_file = uuid.uuid4().hex + ".jpg"
    #dest_path = settings.logs + "/" + dest_file
    #file.save(dest_path)
    #files = {'image': (dest_file, open(dest_path, 'rb'))}
    #r = requests.post(settings.rmac_service, files=files)
    #results = search_engine.search_by_img(np.array(r.json()), settings.k)
    #results = searcher.search_by_img(img_file, settings.k, rescorer, lf_impl)
    results = searcher.search_by_img(img_file, settings.k, rescorer, lf_impl)
    query_url = None
    if request.form.get("tohtml") is not None:
        query_url = ""
    return get_res(results, query_url)

@app.route('/bcirtest/searchByImgB64', methods=['POST'])
def search_by_img_base64():
    sec_id = request.form.get("securityID")
    #if sec_id != security_id:
    #    return Response(json.dumps("Error 401, not authorized"), status=401, mimetype='application/json')
    image = request.form.get('image')
    if image:
        img_file = base64_to_file(image)
    else:
        flash('No img sent')
        return redirect(request.url)


    rescorer = False
    lf_impl = 'ORB500'
    if request.form.get("rescorer") == 'true':
        rescorer = True
    if request.form.get("lf_impl") == 'beblid':
        lf_impl = 'BEBLID'
    elif request.form.get("lf_impl") == 'latch':
        lf_impl = 'LATCH'
    elif request.form.get("lf_impl") == 'orb':
        lf_impl = 'ORB'
    #dest_file = uuid.uuid4().hex + ".jpg"
    #dest_path = settings.logs + "/" + dest_file
    #file.save(dest_path)
    #files = {'image': (dest_file, open(dest_path, 'rb'))}
    #r = requests.post(settings.rmac_service, files=files)
    #results = search_engine.search_by_img(np.array(r.json()), settings.k)
    #results = searcher.search_by_img(img_file, settings.k, rescorer, lf_impl)
    results = searcher.search_by_img(img_file, settings.k)
    query_url = None
    if request.form.get("tohtml") is not None:
        query_url = ""
    return get_res(results, query_url)


@app.route('/bcirtest/searchByURL')
def search_by_url():
    sec_id = request.args.get("securityID")
    #if sec_id != security_id:
    #    return Response(json.dumps("Error 401, not authorized"), status=401, mimetype='application/json')
    url = request.args.get('url')
    rescorer = False
    if request.args.get("rescorer") == 'true':
        rescorer = True
    img_file = url_to_file(url)
   # query = cv2.imdecode(image, cv2.IMREAD_COLOR)
   # dest_file = uuid.uuid4().hex + ".jpg"
   # dest_path = settings.logs + "/" + dest_file
   # cv2.imwrite(dest_path, query)
   # files = {'image': open(dest_path, 'rb')}
   # r = requests.post(settings.rmac_service, files=files)
   # results = search_engine.search_by_img(np.array(r.json()), settings.k)
    rescorer = False
    lf_impl = 'ORB500'
    if request.args.get("rescorer") == 'true':
        rescorer = True
    if request.args.get("lf_impl") == 'beblid':
        lf_impl = 'BEBLID'
    elif request.args.get("lf_impl") == 'latch':
        lf_impl = 'LATCH'
    elif request.args.get("lf_impl") == 'orb':
        lf_impl = 'ORB'
    #results = searcher.search_by_img(img_file, settings.k, rescorer, lf_impl)
    results = searcher.search_by_img(img_file, settings.k, rescorer, lf_impl)
    query_url = None
    if request.args.get("tohtml") is not None:
        query_url = url
    return get_res(results, query_url)

@app.route('/bcirtest/addImg', methods=['POST'])
def add_img():
    if 'image' not in request.files:
        flash('No file part')
        return redirect(request.url)
    try:
        file = request.files['image']
        id = request.files['image'].filename
        id, _ = os.path.splitext(id)
        img_file = post_to_file(file)
        searcher.add(img_file, id)
        json_res = json.dumps("done")
        return json_res
    except:
        abort(500)


@app.route('/bcirtest/rmImg')
def remove_img():
    try:
        id = request.args.get('id')
        searcher.remove(id)
        json_res = json.dumps("done")
        return json_res
    except:
        abort(500)

@app.route('/bcirtest/<path:filename>')
def download_file(filename):
    print(filename)
    values = filename.split('/')
    print(values)
    print(settings.img_folder)

    return send_from_directory(settings.img_folder, filename, as_attachment=False)

"""
if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Reading configuration file')
    parser.add_argument('conf', type=str, help='Configuration file path')

    args = parser.parse_args()
    settings.load_setting(args.conf)
    global searcher
    searcher = BeniCulturaliSearcher()

    #app.run(host='0.0.0.0', port=8090, ssl_context='adhoc')
    app.run(host='0.0.0.0', port=settings.port)

  #  app.run(host='0.0.0.0', port=settings.port)
"""

def start_tornado(app, port=8190):
    http_server = tornado.httpserver.HTTPServer(tornado.wsgi.WSGIContainer(app))
    http_server.listen(port)
    app.logger.info("Tornado server starting on port {}".format(port))
    tornado.ioloop.IOLoop.instance().start()


def start_from_terminal(app):
    parser = argparse.ArgumentParser(description='Reading configuration file')
    parser.add_argument('conf', type=str, help='Configuration file path')

    args = parser.parse_args()
    settings.load_setting(args.conf)
    global searcher
    searcher = Searcher()

    #if args.debug:
    #    app.run(debug=True, host='0.0.0.0', port=settings.port)
#    else:
    #start_tornado(app, settings.port)

    app.run(debug=True, host='0.0.0.0', port=8290)


if __name__ == '__main__':
    start_from_terminal(app)