import cv2
import numpy as np
import pickle as pickle

import LFUtilities
import ImageRecognitionSettings as settings
from BEBLIDRescorerDB import BEBLIDRescorerDB
#from BEBLIDRescorerGPU import BEBLIDRescorerGPU
from FAISSSearchEngine import FAISSSearchEngine
import FeatureExtractor as fe
import BEBLIDExtractor as lf


class Searcher:
    K_REORDERING = 1000

    def __init__(self):
        # self.dataset = h5py.File(settings.dataset_file, 'r')['rmac'][...]

        # np.save('/media/Data/data/beni_culturali/deploy/dataset', self.dataset)
        self.search_engine = FAISSSearchEngine()
        self.rescorer = BEBLIDRescorerDB()

    def get_id(self, idx):
        return self.search_engine.get_id(idx)

    def add(self, img_file, id):
        self.save(True)

        desc = fe.extract(img_file)
        #orb = lf.extract(img_file)
        self.search_engine.add(desc, id)
        #self.rescorer.add(orb)

        self.save()
        print('added ' + id)

    def remove(self, id):
        self.save(True)
        self.search_engine.remove(id)
        #self.rescorer.remove(idx)
        self.save()
        print('removed ' + id)

    def search_by_id(self, query_id, k=10, rescorer=False):
        kq = k
        if rescorer:
            kq = self.K_REORDERING
        res = self.search_engine.search_by_id(query_id, kq)
        if rescorer:
            res_lf = self.rescorer.rescore_by_id(query_id, res)
            res = res_lf if res_lf else res[:k]
        return res

    def search_by_img(self, query_img, k=10, rescorer=False):
        kq = k
        if rescorer:
            kq = self.K_REORDERING
        query_desc = fe.extract(query_img)
        res = self.search_engine.search_by_img(query_desc, kq)
        if rescorer:
            query_lf = lf.extract(query_img)
            res_lf = self.rescorer.rescore_by_img(query_lf, res)
            res = res_lf if res_lf else res[:k]
        return res

    def save(self, is_backup=False):
        self.search_engine.save(is_backup)
        #self.rescorer.save(is_backup)