import time
import pdb
import logging
import traceback
import grpc
import numpy as np

from milvus_benchmark.env import get_env
from milvus_benchmark.client import MilvusClient
from . import utils

logger = logging.getLogger("milvus_benchmark.runners.base")


class BaseRunner(object):
    """runner is actually the executors"""

    def __init__(self, env, metric):
        self._metric = metric
        self._env = env
        self._run_as_group = False
        self._result = dict()
        self._milvus = MilvusClient(host=self._env.hostname)

    def run(self, run_params):
        pass

    def stop(self):
        logger.debug("Stop runner...")
        pass

    @property
    def hostname(self):
        return self._env.hostname

    @property
    def port(self):
        return self._env.port

    @property
    def milvus(self):
        return self._milvus

    @property
    def metric(self):
        return self._metric

    @property
    def result(self):
        return self._result

    @property
    def run_as_group(self):
        return self._run_as_group
    
    def init_metric(self, name, collection_info=None, index_info=None, search_info=None, run_params=None, t="metric"):
        # The locust test calls this method to pass the corresponding metric
        self._metric.collection = collection_info
        self._metric.index = index_info
        self._metric.search = search_info
        self._metric.type = t
        self._metric.run_params = run_params
        self._metric.metrics = {
            "type": name,
            "value": self._result
        }

    # TODO: need an easy method to change value in metric
    def update_metric(self, key, value):
        pass

    def insert_core(self, milvus, info, start_id, vectors):
        # start insert vectors
        end_id = start_id + len(vectors)
        logger.debug("Start id: %s, end id: %s" % (start_id, end_id))
        ids = [k for k in range(start_id, end_id)]
        entities = utils.generate_entities(info, vectors, ids)
        ni_start_time = time.time()
        try:
            _res_ids = milvus.insert(entities)
        except Exception as e:
            logger.error("Insert failed")
            logger.error(traceback.format_exc())
            raise e
        # assert ids == res_ids
        # milvus.flush()
        ni_end_time = time.time()
        logger.debug(milvus.count())
        return ni_end_time-ni_start_time

    # TODO: need to improve
    def insert(self, milvus, collection_name, data_type, dimension, size, ni):
        """ insert data to collection before testing """
        total_time = 0.0
        rps = 0.0
        ni_time = 0.0
        vectors_per_file = utils.get_len_vectors_per_file(data_type, dimension)
        if size % vectors_per_file or size % ni:
            """ 
            An error is reported when 
            the amount of data inserted in a single time cannot divide the total amount of data 
            """
            logger.error("Not invalid collection size or ni")
            return False
        i = 0
        info = milvus.get_info(collection_name)
        if data_type == "local" or not data_type:
            # insert local
            info = milvus.get_info(collection_name)
            while i < (size // vectors_per_file):
                vectors = []
                for j in range(vectors_per_file // ni):
                    # vectors = src_vectors[j * ni:(j + 1) * ni]
                    vectors = utils.generate_vectors(ni, dimension)
                    if vectors:
                        start_id = i * vectors_per_file + j * ni
                        ni_time = self.insert_core(milvus, info, start_id, vectors)
                        total_time = total_time+ni_time
                i += 1
        else:
            # insert from file
            while i < (size // vectors_per_file):
                vectors = []
                if vectors_per_file >= ni:
                    # Get the path of the specified file
                    file_name = utils.gen_file_name(i, dimension, data_type)
                    # logger.info("Load npy file: %s start" % file_name)
                    # Load file content
                    data = np.load(file_name)
                    # logger.info("Load npy file: %s end" % file_name)
                    for j in range(vectors_per_file // ni):
                        vectors = data[j * ni:(j + 1) * ni].tolist()
                        if vectors:
                            start_id = i * vectors_per_file + j * ni
                            ni_time = self.insert_core(milvus, info, start_id, vectors)
                            total_time = total_time+ni_time
                    i += 1
                else:
                    vectors.clear()
                    loops = ni // vectors_per_file
                    for j in range(loops):
                        file_name = utils.gen_file_name(loops * i + j, dimension, data_type)
                        data = np.load(file_name)
                        vectors.extend(data.tolist())
                    if vectors:
                        start_id = i * vectors_per_file
                        ni_time = self.insert_core(milvus, info, start_id, vectors)
                        total_time = total_time+ni_time
                    i += loops
        rps = round(size / total_time, 2)
        ni_time = round(total_time / (size / ni), 2)
        result = {
            "total_time": round(total_time, 2),
            "rps": rps,
            "ni_time": ni_time
        }
        logger.info(result)
        return result