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import os
import re
import time
import numpy as np
import logging
from flask import Blueprint, request, jsonify
from PIL import Image
from app.models.sql_factory import search_by_phash, add_phash
from app.utils.im_utils import compute_phash_int
from app.utils.file_utils import sha256_stream
sanitize_re = re.compile('[\W]+')
valid_exts = ['.gif', '.jpg', '.jpeg', '.png']
LIMIT = 9
api = Blueprint('api', __name__)
@api.route('/')
def index():
"""
API status test endpoint
"""
return jsonify({ 'status': 'ok' })
@api.route('/v1/match', methods=['POST'])
def match():
"""
Search by uploading an image
"""
start = time.time()
file = request.files['q']
fn = file.filename
if fn.endswith('blob'): # FIX PNG IMAGES?
logging.debug('received a blob, assuming JPEG')
fn = 'filename.jpg'
basename, ext = os.path.splitext(fn)
if ext.lower() not in valid_exts:
return jsonify({
'success': False,
'match': False,
'error': 'not_an_image'
})
ext = ext[1:].lower()
im = Image.open(file.stream).convert('RGB')
phash = compute_phash_int(im)
try:
threshold = int(request.args.get('threshold') or 6)
limit = int(request.args.get('limit') or 1)
add = str(request.args.get('add') or 'true') == 'true'
except:
return jsonify({
'success': False,
'match': False,
'error': 'param_error'
})
results = search_by_phash(phash=phash, threshold=threshold, limit=limit)
if len(results) == 0:
if add:
hash = sha256_stream(file)
add_phash(sha256=hash, phash=phash, ext=ext)
match = False
else:
match = True
logging.debug('query took {0:.2g} s.'.format(time.time() - start))
if limit > 1:
return jsonify({
'success': True,
'match': match,
'results': results,
'timing': time.time() - start,
})
return jsonify({
'success': True,
'match': match,
'closest_match': results[0] if len(results) else None,
'timing': time.time() - start,
})
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