import json
import os
from pprint import pprint
import numpy as np

from app.service.outfit_matcher.dataset import FashionDataset
from app.service.outfit_matcher.outfit_evaluator import OutfitMaterTypeAware, Backbone

if __name__ == '__main__':
    with open("./test_param/recommendation_test.json", "r") as f:
        param = json.load(f)
    fashion_dataset = FashionDataset(param["database"])
    backbone_service = Backbone()
    service = OutfitMaterTypeAware()

    # read feature from vector database
    all_items = param["query"] + param["database"]
    unextracted_item = []
    prepared_feature = {}

    # 拿到所有需要提取特征的图片
    for item in all_items:
        if f'{item["item_name"]}.npy' not in os.listdir("feature"):
            unextracted_item.append(item)
    if len(unextracted_item) > 0:
        # 通过backbone模型提取图片特征
        extracted_features = backbone_service.get_result(unextracted_item)
        for i, item in enumerate(unextracted_item):
            # save  features
            # 链接milvus
            # TODO
            np.save(f'feature/{item["item_name"]}.npy', extracted_features[i])
            # 存入数据库
            # 关闭链接

    # TODO 读取本次任务需要的图片特征
    for item in all_items:
        if item["item_name"] not in prepared_feature.keys():
            prepared_feature[item["item_name"]] = np.load(f'feature/{item["item_name"]}.npy')

    # 开始服装搭配任务
    for item in param["query"]:
        # 根据一定规则生成outfit
        outfits = fashion_dataset.generate_outfit(item, param["topk"], param["max_outfits"])
        # 根据模型对生成的outfit打分
        scores = service.get_result(outfits, prepared_feature)
        # 对评分排序，拿到最好的topk个outfit输出
        sorted_indices = np.argsort(scores)[:param["topk"]]  # type-aware
        best_outfits = [outfits[i] for i in sorted_indices]  # 最好的五个

        # 结果可视化
        # service.visualize(outfits, scores, param["topk"], best=True,
        #                   output_path=os.path.join(r"D:\PhD_Study\MIXI\mitu\image\123",
        #                                            f"{item['item_name']}_best_{param['topk']}.png"))
        # service.visualize(outfits, scores, param["topk"], best=False,
        #                   output_path=os.path.join(r"D:\PhD_Study\MIXI\mitu\image\123",
        #                                            f"{item['item_name']}_worst_{param['topk']}.png"))