#!/usr/bin/env micropython
##
## The Ridiculously Simple MicroPython Nex Server
##
## trsmpns.upy.py
##          \   \
##           \   editors shall read this as Python source
##            but MicroPython != Python
##            e.g. sockets are streams by default
##
import os, socket

def main():
  s = socket.socket()
  ai = socket.getaddrinfo("0.0.0.0", 1900)
  addr = ai[0][-1]
  s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  s.bind(addr)
  s.listen(5)

  while True:
    client_stream, client_addr = s.accept()
    req = client_stream.readline()[1:-1].decode() # "/req\n" -> "req"

    while True: ## try and ignore errors.
      try:
        client_stream.write(open(req).read())
        break ## req was a file
      except:
        pass 

      try:
        client_stream.write(open("./"+req+"/index").read())
        break ## req was a dir with index file
      except:
        pass

      try: ## silently ignore other types than file and dir
        client_stream.write("=> ..\n")
        for f in os.listdir("./"+req):
          st = os.stat("./"+req+"/"+f)[0] & 0xc000
          if   st == 0x8000: tc = ""
          elif st == 0x4000: tc = "/"
          if st: client_stream.write("=> "+f+tc+"\n")
        break ## req was a dir without index file
      except:
        pass

      break

    client_stream.close()

main()