# Copyright (C) 2009, 2010  Roman Zimbelmann <romanz@lavabit.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

"""
This is the default ranger configuration file for filetype detection
and application handling.

You can place this file in your ~/.config/ranger/ directory and it will be used
instead of this one.  Though, to minimize your effort when upgrading ranger,
you may want to subclass CustomApplications rather than making a full copy.
            
This example modifies the behaviour of "feh" and adds a custom media player:

#### start of the ~/.config/ranger/apps.py example
	from ranger.defaults.apps import CustomApplications as DefaultApps
	from ranger.api.apps import *
			
	class CustomApplications(DefaultApps):
		def app_kaffeine(self, c):
			return tup('kaffeine', *c)

		def app_feh_fullscreen_by_default(self, c):
			return tup('feh', '-F', *c)

		def app_default(self, c):
			f = c.file #shortcut
			if f.video or f.audio:
				return self.app_kaffeine(c)

			if f.image and c.mode == 0:
				return self.app_feh_fullscreen_by_default(c)

			return DefaultApps.app_default(self, c)
#### end of the example
"""

from ranger.api.apps import *
from ranger.ext.get_executables import get_executables

class CustomApplications(Applications):
	def app_default(self, c):
		"""How to determine the default application?"""
		f = c.file

		if f.basename.lower() == 'makefile':
			return self.either(c, 'make')

		if f.extension is not None:
			if f.extension in ('pdf', ):
				c.flags += 'd'
				return self.either(c, 'evince', 'zathura', 'apvlv')
			if f.extension in ('xml', ):
				return self.either(c, 'editor')
			if f.extension in ('html', 'htm', 'xhtml'):
				return self.either(c, 'firefox', 'opera', 'elinks')
			if f.extension in ('swf', ):
				return self.either(c, 'firefox', 'opera')
			if f.extension == 'nes':
				return self.either(c, 'fceux')
			if f.extension in ('swc', 'smc'):
				return self.either(c, 'zsnes')

		if f.mimetype is not None:
			if INTERPRETED_LANGUAGES.match(f.mimetype):
				return self.either(c, 'edit_or_run')

		if f.container:
			return self.either(c, 'aunpack', 'file_roller')

		if f.video or f.audio:
			if f.video:
				c.flags += 'd'
			return self.either(c, 'mplayer', 'totem')

		if f.image:
			return self.either(c, 'feh', 'eog', 'mirage')

		if f.document or f.filetype.startswith('text'):
			return self.either(c, 'editor')


	# ----------------------------------------- application definitions
	# Note: Trivial applications are defined at the bottom
	def app_pager(self, c):
		return tup('less', '-R', *c)

	def app_editor(self, c):
		try:
			default_editor = os.environ['EDITOR']
		except KeyError:
			pass
		else:
			parts = default_editor.split()
			exe_name = os.path.basename(parts[0])
			if exe_name in get_executables():
				return tuple(parts) + tuple(c)

		return self.either(c, 'vim', 'emacs', 'nano')

	def app_edit_or_run(self, c):
		if c.mode is 1:
			return self.app_self(c)
		return self.app_editor(c)

	@depends_on('mplayer')
	def app_mplayer(self, c):
		if c.mode is 1:
			return tup('mplayer', '-fs', *c)

		elif c.mode is 2:
			args = "mplayer -fs -sid 0 -vfm ffmpeg -lavdopts " \
					"lowres=1:fast:skiploopfilter=all:threads=8".split()
			args.extend(c)
			return tup(*args)

		elif c.mode is 3:
			return tup('mplayer', '-mixer', 'software', *c)

		else:
			return tup('mplayer', *c)

	@depends_on('feh')
	def app_feh(self, c):
		arg = {1: '--bg-scale', 2: '--bg-tile', 3: '--bg-center'}

		c.flags += 'd'

		if c.mode in arg: # mode 1, 2 and 3 will set the image as the background
			return tup('feh', arg[c.mode], c.file.path)
		if c.mode is 11 and len(c.files) is 1: # view all files in the cwd
			images = (f.basename for f in self.fm.env.cwd.files if f.image)
			return tup('feh', '--start-at', c.file.basename, *images)
		return tup('feh', *c)

	@depends_on('aunpack')
	def app_aunpack(self, c):
		if c.mode is 0:
			c.flags += 'p'
			return tup('aunpack', '-l', c.file.path)
		return tup('aunpack', c.file.path)

	@depends_on('file-roller')
	def app_file_roller(self, c):
		c.flags += 'd'
		return tup('file-roller', c.file.path)

	@depends_on('make')
	def app_make(self, c):
		if c.mode is 0:
			return tup("make")
		if c.mode is 1:
			return tup("make", "install")
		if c.mode is 2:
			return tup("make", "clear")

	@depends_on('java')
	def app_java(self, c):
		def strip_extensions(file):
			if '.' in file.basename:
				return file.path[:file.path.index('.')]
			return file.path
		files_without_extensions = map(strip_extensions, c.files)
		return tup("java", files_without_extensions)

	@depends_on('totem')
	def app_totem(self, c):
		if c.mode is 0:
			return tup("totem", *c)
		if c.mode is 1:
			return tup("totem", "--fullscreen", *c)


# Often a programs invocation is trivial.  For example:
#    vim test.py readme.txt [...]
# This could be implemented like:
#    @depends_on("vim")
#    def app_vim(self, c):
#        return tup("vim", *c.files)
# Instead of creating such a generic function for each program, just add
# its name here and it will be automatically done for you.
CustomApplications.generic('vim', 'fceux', 'elinks', 'wine',
		'zsnes', 'javac')

# By setting flags='d', this programs will not block ranger's terminal:
CustomApplications.generic('opera', 'firefox', 'apvlv', 'evince',
		'zathura', 'gimp', 'mirage', 'eog', flags='d')

# What filetypes are recognized as scripts for interpreted languages?
# This regular expression is used in app_default()
INTERPRETED_LANGUAGES = re.compile(r'''
	^(text|application)/x-(
		haskell|perl|python|ruby|sh
	)$''', re.VERBOSE)