import os, sys 
import re
import json 
import base64
import argparse 
import pprint
from collections import defaultdict 


def gen_op(input_path, db, op): 
  keys = _extract_keys(input_path)
  with open(input_path.replace("keys", op)+".input", "w") as ofile:
    ofile.write("select {}\r\n".format(db))
    for key in keys:
      ofile.write('{} "{}"\r\n'.format(op, key))

def _extract_keys(input_path):
  keys = []
  regex_first_line = re.compile(r"2\)\s+1\) \"(?P<key>.+)\"")
  regex = re.compile(r"\s*\d+\) \"(?P<key>.+)\"\n")

  with open(input_path) as ifile: 
    for line in ifile:
      if line.startswith("OK") or line.startswith("1) \"0\""):
        # print("skip {}".format(line))
        continue
      if line[0] == "(" and "s)" in line:
        # print("skip {}".format(line))
        continue
      try:
        m = regex.match(line)
        if m is None:
          m = regex_first_line.match(line)
        keys.append(m.group("key"))
      except Exception as e:
        print(e, line)  
  return keys 

def _extract_ttl(input_path): 
  ttls = []
  with open(input_path) as ifile:
    for line in ifile:
      if line.startswith("OK"):
        continue
      ttls.append(int(line[1:]))
  return ttls

def _extract_klen(input_path):
  klens = []
  with open(input_path) as ifile:
    for line in ifile:
      if line.startswith("OK"):
        continue
      klens.append(int(line[1:]))
  return klens


def convert_state(input_path, ): 
  klen_dict, ttl_dict = {}, {}
  state_dict = {}

  keys = _extract_keys("{}.keys".format(input_path))
  klen = _extract_klen("{}.keylen".format(input_path))
  ttls = _extract_ttl("{}.ttl".format(input_path))

  if len(keys) != len(klen) or len(keys) != len(ttls):
    print("error {} {} {} {}".format(input_path, len(keys), len(klen), len(ttls)))
    print("{} {}".format(keys[-1], klen[-1]))
    # pprint.pprint(klen)
    sys.exit(1)

  for i in range(len(keys)):
    keys[i] = keys[i].replace('\\\\"', 'a"').replace('\\"', 'a')
    # state_dict[hash(keys[i])] = (klen[i], ttls[i])
    state_dict[keys[i]] = (klen[i], ttls[i])
    # print(keys[i].replace('\\\\"', 'a"').replace('\\"', 'a'), hash(keys[i].replace('\\\\"', 'a"').replace('\\"', 'a')))
    # sys.exit(1)

  with open("{}.state.json".format(input_path), "w") as ofile:
    json.dump(state_dict, ofile)

  # n_in, n_no = 0, 0
  # not_in = defaultdict(int)
  # trace_path = "fanout.smf1-cba-21-sr1.prod.twitter.com.31654.log.1"
  # trace_path = "nonfanout.smf1-bos-12-sr1.prod.twitter.com.31772.log.1"
  # trace_path = "fanout.smf1-hax-32-sr1.prod.twitter.com.31881.log.1"
  # with open(trace_path) as ifile:
  #   for line in ifile:
  #     line_split = line.split("\t")
  #     key = line_split[3].strip()
  #     # print(key)
  #     # key = hash(key)
  #     if key in state_dict:
  #       # print(state_dict[hash(key)])
  #       # assert hash(key) in state_dict 
  #       n_in += 1
  #     else:
  #       print(line)
  #       print(key)
  #       if n_no > 20:
  #         1/0
  #       not_in[key] += 1
  #       n_no += 1
  # pprint.pprint(not_in)
  # print("{}/{}".format(n_in, n_in + n_no))



def load_state(trace_path, state_path): 
  n_in, n_no = 0, 0
  with open(state_path) as ifile:
    state_dict = json.load(ifile)
  with open(trace_path) as ifile:
    for line in ifile:
      line_split = line.split("\t")
      key = line_split[3]
      if key in state_dict:
        n_in += 1
      else:
        n_no += 1
  print("{}/{}".format(n_in, n_in + n_no))


if __name__ == "__main__":
  parser = argparse.ArgumentParser(description="generate some data")
  parser.add_argument('--func', dest="func", type=str, required=True, help="gen_op/convert_state")
  parser.add_argument('--path', dest="path", type=str, required=True, help="path to input")
  parser.add_argument('--db', dest="db", type=int, default=-1, help="db used in gen_op")
  parser.add_argument('--op', dest='op', default="", help="op used in gen_op")
  parser.add_argument('--path2', dest="path2", type=str, default="", help="path to input")

  args = parser.parse_args()
  if args.func == "gen_op": 
    assert(args.db != -1)
    assert(args.op in ("ttl", "llen", "card", "test"))
    gen_op(args.path, args.db, args.op)
  elif args.func == "convert_state": 
    convert_state(args.path)
  elif args.func == "load_state": 
    load_state(args.path, args.path2)
  else:
    raise RuntimeError("unknown func {}".format(args.func))