#!/usr/bin/python
from configparser import ConfigParser
from os import chdir, getcwd
from os.path import devnull, expanduser, isdir, isfile
from re import search
from shlex import split
from subprocess import Popen, run
from sys import argv, stdin, stdout, stderr

config = ConfigParser()
CONFIG_PATH = f'{getcwd()}/.banana'
if not isfile(CONFIG_PATH):
	print("banana-runner: no config found!")
	exit(1)
config.read(CONFIG_PATH)
sections = config.sections()

sections.remove("$")

if len(argv) == 1 or argv[0] == "$":
	print("banana-runner: no arguments given")
	exit(1)

if argv[1] == '-l' or argv[1] == '--list':
	# do thing
	for section in sections:
		if section == '$':
			continue
		print(f'{section}')
	exit()

name = argv[1]
if name not in sections:
	print(f'banana-runner: no section {name} found')
	exit(1)
section = config[name]

cmd = section['command']
alias_list = config['$']

def sub_aliases(string):
	output = string
	for alias in alias_list:
		substring = '${' + alias.upper() + "}"
		if substring in output:
			output = output.replace(substring, alias_list[alias])
	return output

cmd = sub_aliases(cmd)

if 'target' in section:
	tdir = sub_aliases(section['target'])
	tdir = expanduser(tdir)
	if isdir(tdir):
		chdir(tdir)
	else:
		if isfile(tdir):
			print(f'banana-runner: "{tdir}" is not a directory!')
		else:
			print(f'banana-runner: "{tdir}" does not exist!')
		exit(1)

print(f" {cmd}")

if 'shell' in section and section['shell']:
	run(split(cmd))
else:
	with open(devnull, 'w') as _:
		Popen(cmd, shell = True, stdout = _, stderr = _)