#!/usr/bin/env python
# console.py

# Copyright (C) 2008-2009 concentricpuddle

# This file is part of puddletag, a semi-good music tag editor.

# 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

import os
import sys
from optparse import OptionParser

from puddlestuff.findfunc import *

noprints = ['__path', '__ext', '__modified', '__accessed', '__folder']
sortorder = ['__filename', '__size', '__length', '__bitrate', '__frequency', '__created']
bold = chr(0x1b) + "[1m"
normal = chr(0x1b) + "[0m"
red = chr(0x1b) + "[31m"


def printerror(text):
    print(red + text + normal)


def sortedkeys(keys):
    sortkeys = [z for z in sortorder if z in keys]
    others = sorted(set(keys).difference(sortkeys))
    return sortkeys + others


path, PATH, FILENAME = os.path, audioinfo.PATH, audioinfo.FILENAME


class PuddleError(Exception): pass


def safe_name(name, to=None):
    """Make a filename safe for use (remove some special chars)

    If any special chars are found they are replaced by to."""
    if not to:
        to = ""
    else:
        to = str(to)
    escaped = ""
    for ch in name:
        if ch not in r'/\*?;"|:':
            escaped = escaped + ch
        else:
            escaped = escaped + to
    if not escaped: return '""'
    return escaped


def vararg_callback(option, opt_str, value, parser):
    assert value is None
    value = []
    rargs = parser.rargs
    while rargs:
        arg = rargs[0]

        if ((arg[:2] == "--" and len(arg) > 2) or
                (arg[:1] == "-" and len(arg) > 1 and arg[1] != "-")):
            break
        else:
            value.append(arg)
        del rargs[0]

    setattr(parser.values, option.dest, value)


def parseoptions(classes):
    usage = '%prog -switches --option [arguments] -f files'
    parser = OptionParser(usage)
    parser.add_option("-f", "--filenames", dest="filename", action="callback", help="The filenames of the input files", callback=vararg_callback)
    parser.add_option("-p", "--preview", action="store_true", dest="preview", help="Ask for confirmation before writing.")
    parser.add_option("-v", "--verbose", action="store_true", dest="verbose", help="Rename the directory according to your pattern.")
    parser.add_option("-t", "--test", action="store_true", dest="test", help="Don't change anything, just print results.")
    # parser.add_option("-c","--continue",action="store_false", dest="cont",help="Yes, when asked.")
    for cl in classes.values():
        parser.add_option('--' + cl.command, dest='action' + cl.command, help=cl.description, action='callback', callback=vararg_callback)

    try:
        command = sys.argv[1]
    except IndexError:
        parser.print_help()
        sys.exit(0)
    (options, args) = parser.parse_args()

    actions = [{z[len('action'):]: getattr(options, z)} for z in dir(options) if z.startswith('action')]
    actions = [z for z in actions if list(z.values())[0] is not None]
    return (options, actions)


class PuddleRunAction:
    name = 'RunAction'
    command = 'runaction'
    description = 'Run the specified action on the selected files.'
    usage = '--runaction Action Names -f files'
    files = True

    def setup(self, args):
        if not args:
            raise PuddleError('No Action was specified')
        temp = []
        for action in args:
            try:
                temp.extend(getActionFromName(action)[0])
            except IOError:
                raise PuddleError("The action, " + action + ", doesn't exist")
        self.funcs = temp

    def run(self, f):
        return runAction(self.funcs, f)


class Format:
    name = 'Format'
    command = 'format'
    description = 'Formats tags using a pattern'
    usage = '--format pattern tags... -f files'
    files = True

    def setup(self, *args):
        pattern = args[:1]
        tags = args[1:]
        if not pattern:
            raise PuddleError('No pattern was specified.')
        if not tags:
            raise PuddleError('No tags were specified.')
        self.tags = tags
        self.pattern = pattern

    def run(self, tags):
        # pdb.set_trace()
        value = tagtofilename(self.pattern, tags)
        return dict([(tag, value) for tag in self.tags])


class FileToTag:
    name = 'FileToTag'
    command = 'filetotag'
    description = 'Retrieves tag information from the filename'
    usage = '--filetotag pattern -f files'
    files = True

    def setup(self, pattern):
        self.pattern = pattern[0]

    def run(self, tags):
        return filenametotag(self.pattern, tags)


class TagToFile:
    name = 'TagToFile'
    command = 'tagtofile'
    description = 'Renames the file according to pattern'
    usage = '--tagtofile pattern -f files'
    files = True

    def setup(self, pattern):
        self.pattern = pattern[0]

    def run(self, tags):
        return {'__path': tagtofilename(self.pattern, tags['__path'])}


class SetTag:
    name = 'SetTag'
    command = 'set'
    description = 'Writes the specified tags on the files.'
    usage = '--set tag value [tag value]... -f files'
    files = True

    def setup(self, *args):
        arglen = len(args)
        if arglen == 0:
            raise PuddleError("Dude, I need some tags to modify.")
        elif arglen % 2 != 0:
            raise PuddleError("I need a value for the " + args[-1] + ' tag.')

        tags = args[0:arglen:2]
        values = args[1:arglen:2]
        self.tags = list(zip(tags, values))

    def run(self, tags):
        return dict([(tag, value) for tag, value in self.tags])


class SetMul:
    name = 'SetMul'
    command = 'setmul'
    description = 'Writes multiple values to the specified tags'
    usage = '--setmul tags::values -f files'
    files = True

    def setup(self, *args):
        for i, z in enumerate(args):
            if '::' in z:  # The separator
                y = z.strip()
                if y == '::':  # Something like ['what.py', 'artist', 'title', '::', 'what is ithis']
                    tags = args[:i]
                    values = args[i + 1:]
                    break
                elif y.startswith('::'):  # ['what.py', 'artist', 'title', '::what is ithis']
                    tags = args[:i]
                    values = args[i:]
                    values[0] = values[0][2:]
                    break
                elif y.endswith('::'):  # ['what.py', 'artist', 'title::', 'what is ithis']
                    tags = args[:i + 1]
                    tags[-1] = tags[-1][:-2]
                    values = args[i + 1:]
                    break
                else:  # ['artist', 'title::"my name is"', 'what', 'is', 'this']
                    tag = y[:y.find('::')]
                    value = y[y.find('::') + 2:]
                    tags = list(args[:i]) + [tag]
                    values = [value] + list(args[i + 1:])
                    break
        if tags:
            self.tags = tags
        else:
            raise PuddleError("No tags were specified")
        values = values
        self.tags = [(tag, values) for tag in tags]

    def run(self, tags):
        return dict([(tag, value) for tag, value in self.tags])


def pprint(tags):
    temp = []
    keys = [z for z in sortedkeys(list(tags.keys())) if z not in noprints]
    for tag in keys:
        value = tags[tag]
        if not isinstance(value, str):
            value = '[' + ','.join(value) + ']'
        temp.append(tag + ': ' + bold + value + normal)
    return "\n".join(temp)


def renameFile(original, tags):
    if PATH in tags:
        if path.splitext(tags[PATH])[1] == "":
            extension = path.extsep + original["__ext"]
        else:
            extension = ""
        oldfilename = original[FILENAME]
        newpath = safe_name(tags[PATH] + extension)
        newfilename = path.join(path.dirname(oldfilename), newpath)
        os.rename(oldfilename, newfilename)
        tags[FILENAME] = newfilename
        tags[PATH] = newpath
    else:
        return {}
    return tags


def writeTags(original, tags):
    try:
        renameFile(original, tags)
    except (OSError, IOError) as e:
        printerror("Couldn't rename to " + original[FILENAME] + ": " + e.strerror)
        return

    try:
        original.update(tags)
        original.save()
    except (OSError, IOError) as detail:
        printerror("Couldn't write to file, " + original['__filename'] + '\n')


def main():
    classes = {'runaction': PuddleRunAction, 'set': SetTag, 'setmul': SetMul,
               'format': Format}
    options, actions = parseoptions(classes)
    files = options.filename
    commands = []
    for command, args in [list(action.items())[0] for action in actions]:
        # Instantiate the class for the command
        cl = classes[command]()
        try:
            if not files and cl.files:
                raise PuddleError('No files were specified to ' + command)
            cl.setup(*args)
        except PuddleError as e:
            printerror('Error: ' + str(e))
            print('usage: ' + cl.usage)
            sys.exit(0)
        # except TypeError, e:
        # text = unicode(e)
        # temp = []
        # match = sre.search('\d+', text)
        # temp.append(int(text[match.start(0):match.end(0)]))
        # text = text[match.end(0): ]
        # match = sre.search('\d+', text)
        # temp.append(int(text[match.start(0):match.end(0)]))
        # if temp[0] > temp[1]:
        # print 'Not enough arguments were specified to --' + cl.command
        # else:
        # print 'Too many arguments were specified to --' + cl.command
        # print 'Usage:', cl.usage
        # sys.exit(0)
        commands.append(cl.run)

    for f in files:
        try:
            tag = audioinfo.Tag(f)
        except (IOError, OSError) as e:
            try:
                printerror("Couldn't read " + f + ': ' + e.strerror)
            except AttributeError:
                printerror("Couldn't read " + f + ': ' + str(e))
            continue
        if tag is not None:
            tags = tag.tags
            for com in commands:
                tags.update(com(tags))
            tags = audioinfo.converttag(tags)
            if options.preview:
                changes = {}
                for z in tags:
                    if not (z in tag and tag[z] == tags[z]):
                        changes[z] = tags[z]
                print('Original: \n', pprint(tag.tags), '\n')
                print('Changes: \n', pprint(changes), '\n')
                print("Do you want to write the changes to the file? [Y/n]")
                s = input()
                if not (s == 'n' or s == 'N'):
                    writeTags(tag, tags)
            elif options.verbose:
                changes = {}
                for z in tags:
                    if not (z in tag and tag[z] == tags[z]):
                        changes[z] = tags[z]
                print('Original: \n', pprint(tag.tags), '\n')
                print('Changes: \n', pprint(changes), '\n')
                'Now writing...' + tag['__filename']
                writeTags(tag, tags)
            elif options.test:
                changes = {}
                for z in tags:
                    if not (z in tag and tag[z] == tags[z]):
                        changes[z] = tags[z]
                print('Original: \n', pprint(tag.tags), '\n')
                print('Changes: \n', pprint(changes), '\n')
            else:
                print(options.test)
                # writeTags(tag, tags)


if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        sys.exit(0)