# ***** BEGIN GPL LICENSE BLOCK *****
#
# Script copyright (C) Campbell J Barton
#
# 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ***** END GPL LICENCE BLOCK *****

# <pep8 compliant>

# History
#
# Originally written by Matt Ebb

import bpy
import os


def guess_player_path(preset):
    import platform
    system = platform.system()

    if preset == 'BLENDER24':
        player_path = "blender"

        if system == 'Darwin':
            test_path = "/Applications/blender 2.49.app/Contents/MacOS/blender"
        elif system == 'Windows':
            test_path = "/Program Files/Blender Foundation/Blender/blender.exe"

            if os.path.exists(test_path):
                player_path = test_path

    elif preset == 'DJV':
        player_path = "djv_view"

        if system == 'Darwin':
            test_path = '/Applications/djv-0.8.2.app/Contents/Resources/bin/djv_view'
            if os.path.exists(test_path):
                player_path = test_path

    elif preset == 'FRAMECYCLER':
        player_path = "framecycler"

    elif preset == 'RV':
        player_path = "rv"

    elif preset == 'MPLAYER':
        player_path = "mplayer"


    return player_path


class PlayRenderedAnim(bpy.types.Operator):
    '''Plays back rendered frames/movies using an external player.'''
    bl_idname = "render.play_rendered_anim"
    bl_label = "Play Rendered Animation"
    bl_options = {'REGISTER'}

    def execute(self, context):
        import subprocess

        scene = context.scene
        rd = scene.render
        prefs = context.user_preferences

        preset = prefs.filepaths.animation_player_preset
        player_path = prefs.filepaths.animation_player
        file_path = bpy.utils.expandpath(rd.output_path)
        is_movie = rd.is_movie_format

        # try and guess a command line if it doesn't exist
        if player_path == '':
            player_path = guess_player_path(preset)

        if is_movie == False and preset in ('FRAMECYCLER', 'RV', 'MPLAYER'):
            # replace the number with '#'
            file_a = rd.frame_path(frame=0)

            # TODO, make an api call for this
            frame_tmp = 9
            file_b = rd.frame_path(frame=frame_tmp)

            while len(file_a) == len(file_b):
                frame_tmp = (frame_tmp * 10) + 9
                print(frame_tmp)
                file_b = rd.frame_path(frame=frame_tmp)
            file_b = rd.frame_path(frame=int(frame_tmp / 10))

            file = ''.join([(c if file_b[i] == c else "#") for i, c in enumerate(file_a)])
        else:
            # works for movies and images
            file = rd.frame_path(frame=scene.frame_start)

        file = bpy.utils.expandpath(file) # expand '//'

        cmd = [player_path]
        # extra options, fps controls etc.
        if preset == 'BLENDER24':
            opts = ["-a", "-f", str(rd.fps), str(rd.fps_base), file]
            cmd.extend(opts)
        elif preset == 'DJV':
            opts = [file, "-playback_speed", str(rd.fps)]
            cmd.extend(opts)
        elif preset == 'FRAMECYCLER':
            opts = [file, "%d-%d" % (scene.frame_start, scene.frame_end)]
            cmd.extend(opts)
        elif preset == 'RV':
            opts = ["-fps", str(rd.fps), "-play", "[ %s ]" % file]
            cmd.extend(opts)
        elif preset == 'MPLAYER':
            opts = []
            if is_movie:
                opts.append(file)
            else:
                opts.append("mf://%s" % file.replace("#", "?"))
                opts += ["-mf", "fps=%.4f" % (rd.fps / rd.fps_base)]
            opts += ["-loop", "0", "-really-quiet", "-fs"]
            cmd.extend(opts)
        else: # 'CUSTOM'
            cmd.append(file)

        # launch it
        try:
            process = subprocess.Popen(cmd)
        except:
            pass
            #raise OSError("Couldn't find an external animation player.")

        return {'FINISHED'}


def register():
    bpy.types.register(PlayRenderedAnim)


def unregister():
    bpy.types.unregister(PlayRenderedAnim)

if __name__ == "__main__":
    register()