"""Cliget - install cli tools in you user profile

Usage:
  cliget [-v] [-c URL] list
  cliget [-v] [-c URL] search PAT
  cliget [-v] [-c URL] install TOOL ...
  cliget [-v] [-c URL] update [--all] [TOOL ...]

list            list all installed tools
search          search for tools in the catalog with the given pattern
install TOOL    install some tools
update          list all updatable tools
update TOOL     update tools
update --all    update all updatable tools


Options:
  -h, --help
  -c, --catalog URL
  -v, --verbose
"""

import logging
import sys, os
from docopt import docopt
from yaml import load, SafeLoader
from semver import VersionInfo
import re
from subprocess import run, CalledProcessError, TimeoutExpired
from fuzzywuzzy import fuzz
import requests

def trace(*mess):
  if "TRACE" in os.environ:
    print("TRACE", mess)

def warn(*mess):
  print(f"WARN {mess[0]}")

class DotDict(dict):
        def __getattr__(self, name):
                return self[name] if name in self else None

def loadcatalog(options)->dict:
  catalog=options.get('__catalog', 'catalog.yaml')
  o = load(open(catalog), SafeLoader)
  trace(o)
  return { k:DotDict(v) for k,v in o.items()}

def find_semver(s:str) -> VersionInfo:
  ver = VersionInfo(0,0,0)
  try:
    ver = VersionInfo.parse(s)
  except ValueError:
    try:
      ver = VersionInfo(*list(i.group(0) for i in re.finditer('\d+', s))[:3])
    except Exception as e:
      trace("parse error", e)
  return ver
    

_version = lambda cmd: run([cmd, '--version'], input='', text=True, capture_output=True, check=True, timeout=0.1).stdout.split('\n')[0]

def _internal_list(options) -> tuple[str,VersionInfo]:
  """list installed tools and their version"""
  ctl = loadcatalog(options)
  for cli, props in ctl.items():
    # search in path
    try:
      vers = _version(cli)
      trace(cli, vers)
      yield cli, props, find_semver(vers)
    except CalledProcessError:
      trace(cli, "call error")
    except TimeoutExpired:
      trace(cli, "timeout")
    except FileNotFoundError:
      trace(cli, "not found")

def dolist(options):
  for (cli, _, ver) in _internal_list(options):
    print(cli, ver)

def dosearch(options):
  pat = options.PAT
  ctl = loadcatalog(options)
  L = []
  for cli, props in ctl.items():
    trace(cli, props)
    rtitle = fuzz.ratio(cli, pat)
    rdesc = fuzz.partial_ratio(props['desc'], pat)
    score = 2 * rtitle + rdesc
    L.append((cli, props['desc'], score))
  L = sorted(L, key=lambda x: -x[-1])
  # TODO format a as table
  print("\n".join("|".join(map(str,l)) for l in L[:10]))

def dolistupdate(options):
  print("look for updatables")
  for (cli, props, ver) in _internal_list(options):
    # get last version online
    if props.github:
      pass
  pass


def _gh_version(repo:str) -> [VersionInfo|None]:
  [owner, repo] = repo.split("/")
  url = f'https://api.github.com/repos/{owner}/{repo}/releases/latest'
  response = requests.get(url)
  return response.json().get("name")

def doinstall(options):
  tools = options.TOOL
  ctl = loadcatalog(options)
  for tool in tools:
    if tool in ctl:
      props  = ctl[tool]
      if props.github:
        vers = _gh_version(props.github)
        trace(vers)
    else:
      warn(f'{tool} not in catalog')
  
  
if __name__ == '__main__':
  if "DEBUG" in os.environ:
    logging.basicConfig(level=logging.DEBUG)
    logging.debug("debug is on")
  else:
    logging.info("not in debug")
  options = docopt(__doc__, version='Cliget 0.1.0')
  options = DotDict({k.replace('-','_'):v for (k,v) in options.items() if v is not None})
  trace(options)
  if options.list:
    dolist(options)
  elif options.search:
    dosearch(options)
  elif options.install or options.update:
    if not options.__all and len(options.TOOL)==0:
      dolistupdate(options)
    elif len(options.TOOL)>0:
      doinstall(options)
    else:
      print("not implemented")