#!/usr/bin/env python3

import sys as _sys
import os as _os
import json as _json
import stat as _stat
import argparse as _argparse


def file_read(path):
	handle = open(path, "r")
	content = handle.read()
	handle.close()
	return content
	

def file_write(path, content):
	handle = open(path, "w")
	handle.write(content)
	handle.close()
	

def string_coin(template, arguments):
	result = template
	for (key, value, ) in arguments.items():
		result = result.replace("{{%s}}" % key, value)
	return result
	

def python_data_encode(data):
	return _json.dumps(data, indent = "\t")


def main():
	## consts
	dir_source = "source"
	dir_build = "build"
	sources_common = [
		_os.path.join(dir_source, "logic", "packages.py"),
		_os.path.join(dir_source, "logic", "lib.py"),
		_os.path.join(dir_source, "logic", "localization.py"),
		_os.path.join(dir_source, "logic", "condition.py"),
		_os.path.join(dir_source, "logic", "conf.py"),
		_os.path.join(dir_source, "logic", "checks", "_interface.py"),
		_os.path.join(dir_source, "logic", "checks", "script.py"),
		_os.path.join(dir_source, "logic", "checks", "file_state.py"),
		_os.path.join(dir_source, "logic", "checks", "http_request.py"),
		_os.path.join(dir_source, "logic", "checks", "generic_remote.py"),
		_os.path.join(dir_source, "logic", "channels", "_interface.py"),
		_os.path.join(dir_source, "logic", "channels", "console.py"),
		_os.path.join(dir_source, "logic", "channels", "email.py"),
		_os.path.join(dir_source, "logic", "channels", "libnotify.py"),
	]
	targets = {
		"app": {
			"sources": (
				sources_common
				+
				[
					_os.path.join(dir_source, "logic", "main.py"),
				]
			),
			"build": _os.path.join(dir_build, "heimdall"),
		},
		"test": {
			"sources": (
				sources_common
				+
				[
					_os.path.join(dir_source, "test", "test.py"),
				]
			),
			"build": _os.path.join(dir_build, "heimdall-test"),
		},
	}
	
	## args
	argument_parser = _argparse.ArgumentParser(
	)
	argument_parser.add_argument(
		"-t",
		"--target",
		type = str,
		choices = ["app", "test"],
		default = "app",
		dest = "target_name",
		help = "which target to build",
	)
	args = argument_parser.parse_args()
	
	## exec
	if (not _os.path.exists(dir_build)):
		_os.mkdir(dir_build)

	compilation = ""
	compilation += "#!/usr/bin/env python3\n\n"
	
	### localization
	if True:
		localization_data = dict(
			map(
				lambda entry: (
					entry.name.split(".")[0],
					_json.loads(file_read(entry.path)),
				),
				filter(
					lambda entry: (entry.is_file() and entry.name.endswith(".json")),
					_os.scandir(_os.path.join(dir_source, "localization"))
				)
			)
		)
		compilation += string_coin(
			"localization_data = {{data}}\n\n",
			{
				"data": python_data_encode(localization_data),
			}
		)
	
	### logic
	for path in targets[args.target_name]["sources"]:
		compilation += (file_read(path) + "\n")
	
	### write to file
	if _os.path.exists(targets[args.target_name]["build"]):
		_os.remove(targets[args.target_name]["build"])
	file_write(targets[args.target_name]["build"], compilation)
	
	### postproess
	_os.chmod(
		targets[args.target_name]["build"],
		(_stat.S_IRWXU | _stat.S_IXGRP | _stat.S_IXOTH)
	)
	

main()