#! /bin/env python3
# encoding: utf-8

import os

from .aux import _print
from .textui import prefix

# --------------------------------------------------

class File:
	"""
	A binary r/w file container that abstracts file descriptors away. You just read and write data.
	
	Nonexistent files will be created, including any directories if necessary.
	"""
	
	def __init__(self, path, encoding=None):
		"""
		encoding    which encoding to use when opening files; None means binary (raw)
		"""
		
		self.encoding = encoding
		
		if path[0] == "~":
			self.path = os.path.join(os.getenv("HOME"), path[2:])
		else:
			self.path = path
		
		if not os.path.isfile(self.path):
			if os.path.exists(self.path):
				_print("path §y%s§/ exists but §ris not a file§/" %(self.path), prefix.fail)
				raise RuntimeError
			
			else:
				dirname = os.path.dirname(self.path)
				
				if dirname and not os.path.isdir(dirname):
					_print("creating directory §B%s§/" %(dirname))
					os.makedirs(dirname)
			
			# create the file
			touch(self.path)
	
	@property
	def data(self):
		"""
		Reads the file and returns the contents.
		"""
		
		if self.encoding:
			fd = open(self.path, encoding=self.encoding)
		else:
			fd = open(self.path, "rb")
		
		data = fd.read()
		fd.close()
		
		return data
	
	@data.setter
	def data(self, data):
		"""
		Writes data into the file.
		"""
		if self.encoding:
			fd = open(self.path, "w", encoding=self.encoding)
		else:
			fd = open(self.path, "wb")
		
		fd.write(data)
		fd.close()
	
	def __repr__(self):
		return "over.core.File(%s %s)" %(self.path, self.encoding if self.encoding else "raw")

# --------------------------------------------------

def touch(fname, times=None):
	"""
	Sets a filename's atime and mtime.
	
	times is a tuple of (atime, mtime) and defaults to "now".
	"""
	
	with open(fname, 'a'):
		os.utime(fname, times)