#!/usr/bin/env python3 
# -*- coding: iso-8859-15 -*-

#depends on python-magic 0.4
import os, magic, argparse, sys
from page_template import *

parser = argparse.ArgumentParser("""
distbusi is a content management system for the web that produces static index pages based on folders in the filesystem. It is inspired by the automatic index functions featured in several web servers. It works by traversing the file system and directory hierarchy to automatically list all the files in the directory and providing them with html classes and tags for easy styling.
""")
parser.add_argument('-d', '--directory', help="Select which directory to distribute")
parser.add_argument('-v', '--verbose', help="Print verbose debug output", action="store_true")
args = parser.parse_args()

if args.directory:
	if args.verbose:
		print('Generating directory listing for', args.directory)
	directory = args.directory
else:
	directory = '.'

mime_type = magic.Magic(mime=True)

file_types = {'image':'<img class="image" src="{}">', 'pdf':'<object data="{}" class="pdf" type="application/pdf"><embed src="{}" type="application/pdf" /></object>', 
'text':'<a href="{}" class="text">{}</a>', 'video':'<video class="video" controls><source src="{}"></source></video>', 'audio':'<audio controls class="audio"> <source src="{}"></source></audio>'}

code_types = ['x-c', 'html']


def dict_by_value(dictionary, value):
	return(list(dictionary.keys())[list(dictionary.values()).index(value)]) # returns the key for the given value
	
def div(mime, tag, *values):
	#name, full_path
	class_name = values[0].split('.')[0].replace(' ', '_')
	if 'image' in mime:
		html ='<div class="{}">'.format(class_name)+tag+'<br><span class="filename">{}</span></div>'.format(values[0])

	elif 'pdf' in format:
		html ='<div class="{}">'.format(class_name)+tag+'<br><class="filename">{}</span></div>'.format(values[0])
	else:
		html = '<div class="{}">'.format(class_name)+tag+'</div>'.format(values[0])
	return html

for root, dirs, files in os.walk(directory):
	html = []
	if args.verbose:
		print ('Listing', root)
	for name in files:
		if args.verbose:
			print ('Adding', name)
		if 'index.html' not in name:
			full_path = os.path.join(root,name)
			mime = mime_type.from_file(full_path)
			mime, format = mime.split('/') #example: text plain

			if args.verbose:
				print(mime, format)

			if mime in file_types: #expansion for different kind of textfiles
				if mime == 'text':
					if name.endswith('.html') or name.endswith('.txt'): #what types of text files to expand
						a = open(full_path).read()
					elif format in code_types: #if the plain text is code, which types do we wrap in pre-tags?
						a = "<pre>"+open(full_path).read()+"</pre>"
					else:
						a = file_types[mime]
				else:
					a = file_types[mime]

			if format in file_types:
					a = file_types[format]

			if mime not in file_types and format not in file_types: #to catch exceptions we haven't defined in file_types before
				a = "<a href='{}'>{}</a>"
				if args.verbose:
					print ('mime-type not in list, adding as href: \n', mime,format, name)

			a = a.replace('{}',name)
			html.append(div(mime,a,name))
			#html.append(a)
	if root != directory:
		html.append('<a href="../">../</a>')

	for name in dirs:
		i = os.path.join(root,name)
		a = "<a href='{}' class='dir'>{}/</a>".replace('{}',name)
		html.append(div('dir',a,'folder'))


	with open(os.path.join(root,'index.html'),'w') as f:
		f.write(html_head)
		for line in html:
			f.write(line+'\n')
		f.write(html_footer)