#!/usr/bin/python3
import os
import sys
import re
from pathlib import PurePath, PurePosixPath
PP = PurePosixPath

def strip_part(part):
	part = part.lower()
	part = re.sub(r"[^a-z]+", "", part)
	return part

def recursive_fuzzy_search(base, parts):
	if not parts:
		"done recursion"
		return base

	part = parts[0]
	if os.path.exists(os.path.join(base, part)):
		"perfect match"
		base = os.path.join(base, part)
		return recursive_fuzzy_search(base, parts[1:])

	spart = strip_part(part)
	basemap = {}
	for bpart in os.listdir(base):
		"""
		if (len(parts) > 1) != (os.path.isdir(os.path.join(base, bpart))):
			continue
		"""
		if not os.path.isdir(os.path.join(base, bpart)):
			"we are only looking at subdirs for now"
			"we don't link standalone files"
			continue
		sbpart = strip_part(bpart)
		if sbpart in basemap:
			"ambiguous match"
			return None
		basemap[sbpart] = bpart
	#print(f"Searching {spart} in {basemap}")
	if spart in basemap:
		base = os.path.join(base, basemap[spart])
		return recursive_fuzzy_search(base, parts[1:])

	"no match"
	return None



def testpath(tested, base, sub):
	if tested:
		return tested
	testvar = os.path.join(base, sub)
	if os.path.exists(testvar):
		return testvar

	if not os.path.exists(base):
		return None

	"now, it gets fuzzier... much, much fuzzier"
	rv = recursive_fuzzy_search(base, PP(sub).parts)
	#print(f"Recursive search for {PP(sub).parts} found {rv}")

	return rv

def resolve_realpath(hint, realpath):
	done = None
	if hint == "link_appdata":
		done = testpath(done, os.environ['HOME'], realpath)
		return done
	elif hint == "link_user":
		done = testpath(done, os.environ['HOME'], realpath)
	elif hint == "link_games":
		done = testpath(done, os.path.join(os.environ['HOME'], 'Games'), realpath)
	elif hint == "link_steam":
		done = testpath(done, os.path.join(os.environ['HOME'], 'Games', 'Steam'), realpath)

	return done


def install_link(hint, realpath, linkpath):
	#os.symlink('linkpath', 'realpath')
	realpath = realpath.replace('\\', '/')
	print((hint, realpath))
	reallyrealpath = resolve_realpath(hint, realpath)
	if reallyrealpath:
		print(reallyrealpath)

def main():
	linklist = []
	srcbat = "zz_subcall_hardlinks_install.bat"
	matchre = re.compile('^call :([^ ]*) "([^"]*)" "([^"]*)"')
	with open(srcbat, 'r') as fd:
		for line in fd:
			m = matchre.match(line)
			if m:
				install_link(m[1], m[2], m[3])
				


if __name__ == "__main__":
	main()