editsalamander.py

from flask import request, jsonify
from flask_jwt_extended import jwt_required, get_jwt_identity
from flask_restful import Resource
from api import db, limiter
import os
from api.models.dbmodels import Location, SalamanderGrowth, Salamander, User
from algorithm.brute_force_matching import match_file_structure
from api.endpoints.matchsalamander import sanitize_number_str
import glob
from shutil import move
from path_constants import _ACCESS_DATABASE
from image_encoder.image_encoder import *
import cv2


class EditSalamander(Resource):
    decorators = [limiter.limit("60/minute")]

    @staticmethod
    @jwt_required
    def get(salamander_id, image_id):
        user_id = get_jwt_identity()
        user = db.session.query(User).filter_by(id=user_id).first()
        if user.admin:
            with _ACCESS_DATABASE:
                salamander = db.session.query(Salamander).filter_by(id=salamander_id).first()
                salamander_growth = db.session.query(SalamanderGrowth).filter_by(salamander_id=salamander.id,
                                                                                 image_id=image_id).first()
                if salamander and salamander_growth:
                    location = db.session.query(Location).filter_by(id=salamander.location_id).first()
                    salamander_images = []
                    path_to_salamander_images = os.path.join("./images", location.name, salamander.species,
                                                             salamander.sex, str(salamander.id))
                    list_of_paths = glob.glob(os.path.join(path_to_salamander_images, '*.*'))
                    for path in list_of_paths:
                        basename = os.path.basename(path)
                        if basename.__contains__(str(image_id)):

                            image = cv2.imread(path)
                            if not basename.__contains__("str"):  # Scale only original to set size

                                height, width, _ = image.shape
                                desired_long_side = 320
                                scaling_factor = 1

                                if width > height:
                                    scaling_factor = desired_long_side / width
                                else:
                                    scaling_factor = desired_long_side / height

                                new_dim = (int(width * scaling_factor), int(height * scaling_factor))

                                # resize image
                                image = cv2.resize(image, new_dim, interpolation=cv2.INTER_AREA)

                            _, buffer = cv2.imencode('.jpg', image)
                            encoded = base64.b64encode(buffer)

                            image_data = {"url": "data:image/png;base64," + encoded.decode()}

                            salamander_images.append(image_data)

                    return jsonify({"images": salamander_images, "length": salamander_growth.length,
                                    "weight": salamander_growth.weight, "imageId": image_id, "location": location.name,
                                    "salamanderId": salamander.id, "sex": salamander.sex, "species": salamander.species,
                                    'status': 200})
                else:
                    return jsonify({"message": "no salamander with this id or no growth data", 'status': 400})
        else:
            return jsonify({"message": "no access to this endpoint", 'status': 400})

    @staticmethod
    @jwt_required
    def delete():
        data = request.form
        if "id" in data and "image_id" in data and "location" in data:
            user_id = get_jwt_identity()
            user = db.session.query(User).filter_by(id=user_id).first()
            with _ACCESS_DATABASE:
                salamander = db.session.query(Salamander).filter_by(id=data['id']).first()
                location = db.session.query(Location).filter_by(name=data['location']).first()
                if user.admin and salamander and location:
                    salamander_path = os.path.join("./images", location.name, salamander.species, salamander.sex,
                                                   str(salamander.id))

                    img_id = int(data['image_id'])
                    last_id = int(len(os.listdir(salamander_path)) / 2) - 1

                    if img_id >= int(len(os.listdir(salamander_path)) / 2):
                        return jsonify({"message": "this image id does not exist", "status": 400})

                    original_path = glob.glob(os.path.join(salamander_path, str(img_id) + '.*'))[0]
                    processed_path = glob.glob(os.path.join(salamander_path, str(img_id) + '_str.*'))[0]

                    os.remove(original_path)
                    os.remove(processed_path)
                    delete_growth_row(salamander.id, img_id)

                    # if last image was moved:
                    if len(os.listdir(salamander_path)) == 0:
                        os.rmdir(salamander_path)
                        db.session.delete(salamander)
                        db.session.commit()
                        return jsonify(
                            {"id": salamander.id, "imageId": img_id, "message": "salamander deleted", 'status': 200})
                    else:
                        if img_id != last_id:
                            original_path = glob.glob(os.path.join(salamander_path, str(last_id) + '.*'))[0]
                            processed_path = glob.glob(os.path.join(salamander_path, str(last_id) + '_str.*'))[0]

                            original_extension = os.path.splitext(original_path)[1]
                            processed_extension = os.path.splitext(processed_path)[1]

                            salamander_growth_row = db.session.query(SalamanderGrowth).filter_by(
                                salamander_id=salamander.id, image_id=last_id).first()
                            salamander_growth_row.image_id = img_id
                            db.session.commit()
                            os.rename(processed_path,
                                      os.path.join(salamander_path, str(img_id) + "_str" + processed_extension))
                            os.rename(original_path, os.path.join(salamander_path, str(img_id) + original_extension))

                        return jsonify(
                            {"id": salamander.id, "imageId": img_id, "message": "salamander deleted", 'status': 200})
                else:
                    return jsonify({"message": "this user cannot delete this salamander", 'status': 400})
        else:
            return jsonify({"message": "wrong data in form", 'status': 400})

    @staticmethod
    @jwt_required
    def put():
        user_id = get_jwt_identity()
        user = db.session.query(User).filter_by(id=user_id).first()
        data = request.form
        if user.admin and "id" in data and "image_id" in data:
            with _ACCESS_DATABASE:
                salamander = db.session.query(Salamander).filter_by(id=data['id']).first()
                if salamander:
                    growth_row = db.session.query(SalamanderGrowth).filter_by(salamander_id=salamander.id,
                                                                              image_id=int(data['image_id'])).first()
                    if "weight" in data:
                        growth_row.weight = sanitize_number_str(str(data['weight']))
                        db.session.commit()
                    if "length" in data:
                        growth_row.length = sanitize_number_str(str(data['length']))
                        db.session.commit()
                    if "location" in data and "new_location" in data and "new_sex" in data and "new_species" in data:
                        if data['location'] != data['new_location'] or salamander.sex != data['new_sex'] or \
                                salamander.species != data['new_species']:
                            salamander_path = os.path.join("images", data['location'], salamander.species,
                                                           salamander.sex, str(salamander.id))
                            new_path_to_images = os.path.join("images", data['new_location'], data['new_species'],
                                                              data['new_sex'])
                            original_path = glob.glob(os.path.join(salamander_path, data['image_id'] + '.*'))
                            processed_path = glob.glob(os.path.join(salamander_path, data['image_id'] + '_str.*'))
                            if len(original_path) > 0 and len(processed_path) > 0:
                                original_path = original_path[0]
                                processed_path = processed_path[0]
                                image_id = int(data['image_id'])
                                last_id = int(len(os.listdir(salamander_path)) / 2) - 1

                                if data['new_sex'] != "juvenile":
                                    result = match_file_structure(input_image=processed_path,
                                                                  match_directory=new_path_to_images)
                                    if result:

                                        # if salamander already exist:
                                        if result > -1:
                                            # move all images and delete previous ID.:
                                            move_images(salamander.id, result, image_id,
                                                        path_to_salamander=os.path.join(new_path_to_images,
                                                                                        str(result)),
                                                        path_to_original_image=original_path,
                                                        path_to_processed_image=processed_path)
                                        else:
                                            add_salamander(salamander.id, image_id, data['new_location'],
                                                           data['new_species'],
                                                           data['new_sex'], new_path_to_images, user_id, original_path,
                                                           processed_path)
                                        return handle_remaining_images(salamander, salamander_path, image_id, last_id,
                                                                       True, result)
                                    else:
                                        return jsonify(
                                            {"message": "Salamander image, " + data['image_id'] + " does not exist",
                                             'status': 400})
                                    # if last image was moved:
                                else:
                                    add_salamander(salamander.id, image_id, data['new_location'], data['new_species'],
                                                   data['new_sex'], new_path_to_images, user_id, original_path,
                                                   processed_path)
                                    return handle_remaining_images(salamander, salamander_path, image_id, last_id,
                                                                   False, 0)
                            else:
                                return jsonify({"message": "Image id, " + data[
                                    'image_id'] + " does not exist in salamander_id, " + data['id'], 'status': 400})
                        else:
                            return jsonify(
                                {"message": "salamander cannot be moved to the same location", 'status': 400})
                    else:
                        return jsonify({"message": "salamander updated", 'status': 200})
                else:
                    return jsonify({"message": "Salamander ID" + data['id'] + " does not exist", 'status': 400})
        else:
            return jsonify({"message": "Non admin users cannot move salamander", 'status': 400})


def delete_growth_row(salamander_id, image_id):
    salamander_growth_row = db.session.query(SalamanderGrowth).filter_by(salamander_id=salamander_id,
                                                                         image_id=image_id).first()
    if salamander_growth_row:
        db.session.delete(salamander_growth_row)
        db.session.commit()


def handle_remaining_images(salamander, salamander_path: str, image_id: int, last_id: int, match_bool, result):
    # if last image was moved:
    if len(os.listdir(salamander_path)) == 0:
        os.rmdir(salamander_path)
        db.session.delete(salamander)
        db.session.commit()
        if match_bool and result > -1:
            return jsonify({"id": result, "matching": "Match!", "message": "Matched with salamander", 'status': 200})
        else:
            return jsonify(
                {"id": salamander.id, "matching": "No match.", "message": "New salamander in database", 'status': 200})

    else:
        if image_id != last_id:
            original_path = glob.glob(os.path.join(salamander_path, str(last_id) + '.*'))[0]
            processed_path = glob.glob(os.path.join(salamander_path, str(last_id) + '_str.*'))[0]
            original_extension = os.path.splitext(original_path)[1]
            processed_extension = os.path.splitext(processed_path)[1]
            salamander_growth_row = db.session.query(SalamanderGrowth).filter_by(salamander_id=salamander.id,
                                                                                 image_id=last_id).first()
            salamander_growth_row.image_id = image_id
            db.session.commit()
            os.rename(processed_path, os.path.join(salamander_path, str(image_id) + "_str" + processed_extension))
            os.rename(original_path, os.path.join(salamander_path, str(image_id) + original_extension))
        if match_bool and result > -1:
            return jsonify({"id": result, "matching": "Match!", "message": "Matched with salamander", 'status': 200})
        else:
            return jsonify(
                {"id": salamander.id, "matching": "No match.", "message": "New salamander in database", 'status': 200})


def lower_image_id_growth_row(salamander_id, old_id, new_id):
    salamander_growth_row = db.session.query(SalamanderGrowth).filter_by(salamander_id=salamander_id,
                                                                         image_id=old_id).first()
    if salamander_growth_row:
        salamander_growth_row.image_id = new_id
        db.session.commit()


def move_images(salamander_id, new_salamander_id, image_id, path_to_salamander, path_to_original_image,
                path_to_processed_image):
    path_to_salamander = os.path.abspath(path_to_salamander)
    split_name_org = str(path_to_original_image).split('.')
    split_name_proc = str(path_to_processed_image).split('.')
    number_of_files = int(len(os.listdir(path_to_salamander)) / 2)
    a = os.path.join(path_to_salamander, str(number_of_files)) + "." + split_name_org[len(split_name_org) - 1]
    b = os.path.join(path_to_salamander, str(number_of_files)) + "_str." + split_name_proc[len(split_name_org) - 1]
    move(path_to_original_image, a)
    move(path_to_processed_image, b)
    salamander_growth_row = db.session.query(SalamanderGrowth).filter_by(salamander_id=salamander_id,
                                                                         image_id=image_id).first()
    if salamander_growth_row:
        salamander_growth_row.image_id = number_of_files
        salamander_growth_row.salamander_id = new_salamander_id
        db.session.commit()


def add_salamander(old_salamander_id, image_id, location, species, sex, path_to_images, user_id, path_to_original_image,
                   path_to_processed_image):
    location_id = db.session.query(Location.id).filter_by(name=location.lower()).first()
    new_salamander = Salamander(sex=sex, species=species, location_id=location_id[0], uid=user_id)
    db.session.add(new_salamander)
    db.session.commit()
    salamander_id = db.session.query(Salamander.id).filter_by(uid=user_id).order_by(Salamander.id.desc()).first()
    path_for_new_salamander = os.path.join(path_to_images, str(salamander_id[0]))
    os.makedirs(path_for_new_salamander)
    move_images(old_salamander_id, salamander_id[0], image_id, path_for_new_salamander, path_to_original_image,
                path_to_processed_image)
    return salamander_id[0]