import os, sys 
import time 
import struct 
import subprocess
import shutil
import base64

OP_MAPPING = {
  
}


def _pack_line_bin(op, ttl, key_size, val_size, ):
  # first eight bit is op, the last 24 bit is ttl 
  op = op << 24
  ttl = min(req.ttl, 8000000) & (0x01000000-1)
  op_ttl = op | ttl
  # first 10 bit is key size, last 22 bit is value size 
  assert req.value_size < 0x00400000-1, "value size too large " + str(req.value_size) 
  ksz, vsz = req.key_size << 22, req.value_size & (0x00400000-1)
  kv_size = ksz | vsz 
  self.ofile.write(self.mystruct.pack(req.real_time, req.obj_id, kv_size, op_ttl))


def _count_keylen(key):
  """ count the bytes in hex 
  """ 
  len0 = len(key)
  key = key.replace("\\x", "")
  # count of 0x in the key
  n_0x = (len0 - len(key))//2
  cnt = len(key) - n_0x - key.count("\\")
  # print(len(key), cnt, key)
  return cnt 

def _remove_topology(key):
  pos = 0
  n_bytes = 8 
  while n_bytes > 0:
    if key[pos] == "\\":
      if key[pos+1] == "x":
        pos += 4
      else: 
        pos += 2 
    else:
      pos += 1 
    n_bytes -=1 

  assert(key[pos] == "\\")
  return key[pos:]

op_set = set(("llen", "ttl", "type", "scan", "ping", "info", "command", "select", "dbsize"))

def _convert_line(line_split):
  info1 = line_split[0].split()

  ts = float(info1[0]) - 1604000000
  db = int(info1[1][1:])
  op = info1[3].strip('"')

  if op.lower() in op_set:
    return None

  pkey = _remove_topology(line_split[1].strip('"'))
  pklen = _count_keylen(pkey)
  # pkey = hash(pkey)
  other_fields = []

  if op[:12] == "RPUSHXTRIMEX" or op == "RPUSHTRIMEX":
    # RPUSHXTRIMEX <outer key> <trim length> <ttl> <value> [<value> ...]
    trim = int(line_split[2].strip('"'))
    ttl = int(line_split[3].strip('"'))
    # val = [hash(line_split[i].strip('"')) for i in range(4, len(line_split))]
    val = [_count_keylen(line_split[i].strip('"')) for i in range(4, len(line_split))]
    other_fields = [trim, ttl, *val]
    # if len(val) != 1:
    #   print(val)

  elif op == "LMREM": 
    # LMREM (multi-LREM) : Remove multiple count, element pairs
    # LMREM <outer key> <count> <element> [<count> <element> ...]
    i = 2
    while len(line_split) > i + 1:
      count = int(line_split[i].strip('"'))
      elem = hash(line_split[i+1].strip('"'))
      other_fields.append(count)
      other_fields.append(elem)
      i += 2

  elif op[:6] == "LRANGE": 
    start = int(line_split[2].strip('"'))
    stop = int(line_split[3].strip('"'))
    ttl, incr, max_ttl = "", "", ""

    if op[:8] == "LRANGEEX": 
      # LRANGEEX <outer key> <start> <stop> <ttl> [incr] [max ttl]
      ttl = int(line_split[4].strip('"'))
      if len(line_split) > 5:
        incr = line_split[5].strip('"')
      if len(line_split) > 6:
        max_ttl = int(line_split[6].strip('"'))
    other_fields = [start, stop, ttl, incr, max_ttl]


  elif op == "LRESET": 
    # Create a new list, append values, and set TTL
    # LRESET <outer key> <trim length> <ttl> <value> [<value> ...]
    trim = int(line_split[2].strip('"'))
    ttl = int(line_split[3].strip('"'))
    val = [hash(line_split[i].strip('"')) for i in range(4, len(line_split))]
    other_fields = [trim, ttl, *val]      

  elif op == "DEL": 
    # other_fields = [hash(line_split[i].strip('"')) for i in range(2, len(line_split))]
    other_fields = [_count_keylen(line_split[i].strip('"')) for i in range(2, len(line_split))]
    if len(other_fields) != 0:
      print(other_fields)

  elif op == "HMGET": 
    raise RuntimeError("not suuported {}".format(line_split))
  elif op == "HMERGEEX": 
    # HMERGEEX <outer key> <ttl> [<inner key> <value>] 
    raise RuntimeError("not suuported {}".format(line_split))
  elif op == "HMSETEX": 
    raise RuntimeError("not suuported {}".format(line_split))
  elif op.lower() == "ttl" or op.lower() == "type":
    return None 
  else:
    raise RuntimeError("unknown command {}".format(line_split)) 

  return ts, db, op, pkey, pklen, other_fields


def convert(input_file): 
  ifile = open(input_file)
  ofile = open(input_file + ".clean", "w")
  for line in ifile:
    if line.startswith("OK"): 
      continue
    line_split = line.replace('\\\\"', 'a"').replace('\\"', 'a').strip("\n").split('" "')
    try: 
      req = _convert_line(line_split)
      if req is None:
        continue 
      ts, db, op, pkey, pklen, other_fields = req
      ofile.write("{:10.2f}\t{:2}\t{}\t{}\t{}\t{}\n".format(ts, db, op, pkey, pklen, ",".join(str(i) for i in other_fields)))
    except Exception as e:
      line = line.lower()
      # if "info" in line or "command" in line or 'select' in line or 'dbsize' in line:
      #   continue 
      print(input_file, line)
      for i, x in enumerate(line_split):
        print(i, x)
      print(e)
      # raise RuntimeError(e)


if __name__ == "__main__":
  time.sleep(1)
  convert(sys.argv[1]+".1")
  shutil.move(sys.argv[1]+".1.clean", sys.argv[1]+".1")