#
# Copyright (C) 2016-2020 by Nathan Lovato, Daniel Oakey, Razvan Radulescu, and contributors
#
# This file is part of Power Sequencer.
#
# Power Sequencer 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.
#
# Power Sequencer 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 Power Sequencer. If
# not, see <https://www.gnu.org/licenses/>.
#
import bpy
import os

from .utils.doc import doc_name, doc_idname, doc_brief, doc_description


class POWER_SEQUENCER_OT_render_apply_preset(bpy.types.Operator):
    """
    *Brief* Applies a rendering preset to the project

    Sets rendering and encoding settings and an output filename based on a preset.

    Available presets:

    - YouTube: 1080p mp4 video encoded with H264 and AAC for audio, based on YouTube's recommended settings
    - Twitter: 720p mp4 video
    """

    doc = {
        "name": doc_name(__qualname__),
        "demo": "",
        "description": doc_description(__doc__),
        "shortcuts": [
            (
                {"type": "F12", "value": "PRESS", "alt": True},
                {"preset": "youtube"},
                "Apply Youtube Render Preset",
            )
        ],
        "keymap": "Sequencer",
    }
    bl_idname = doc_idname(__qualname__)
    bl_label = doc["name"]
    bl_description = doc_brief(doc["description"])
    bl_options = {"REGISTER"}

    preset: bpy.props.EnumProperty(
        items=[
            (
                "youtube",
                "youtube",
                "Full HD mp4 with AAC audio, following recommendations from Youtube",
            ),
            (
                "twitter",
                "twitter",
                "HD ready mp4 with high enough bitrate for Twitter and Facebook",
            ),
        ],
        name="Preset",
        description="Preset to use ",
        default="youtube",
    )

    name_pattern: bpy.props.EnumProperty(
        items=[
            ("folder", "Folder", "Use the folder's name as the exported file name"),
            (
                "blender",
                "Blender file",
                "Use the project's .blend file name as the exported file name",
            ),
            ("scene", "Current scene", "Use the scene's name as the exported file name"),
        ],
        name="Filename",
        description="Auto name the rendered video after...",
        default="blender",
    )

    @classmethod
    def poll(cls, context):
        return context.scene

    def execute(self, context):
        if not bpy.data.is_saved:
            self.report({"WARNING"}, "Save your file first")
            return {"CANCELLED"}

        script_file = os.path.realpath(__file__)
        addon_directory = os.path.dirname(script_file)

        # audio
        if context.scene.render.ffmpeg.audio_codec == "NONE":
            context.scene.render.ffmpeg.audio_codec = "AAC"
            context.scene.render.ffmpeg.audio_bitrate = 192

        # video
        if self.preset == "youtube":
            bpy.ops.script.python_file_run(
                filepath=os.path.join(addon_directory, "render_presets", "youtube_1080.py")
            )
        elif self.preset == "twitter":
            bpy.ops.script.python_file_run(
                filepath=os.path.join(addon_directory, "render_presets", "twitter_720p.py")
            )

        from os.path import splitext, dirname

        path = bpy.data.filepath

        exported_file_name = "video"
        if self.name_pattern == "blender":
            exported_file_name = splitext(bpy.path.basename(path))[0]
        elif self.name_pattern == "folder":
            exported_file_name = dirname(path).rsplit(sep="\\", maxsplit=1)[-1]
        elif self.name_pattern == "scene":
            exported_file_name = context.scene.name

        context.scene.render.filepath = "//" + exported_file_name + ".mp4"

        self.report({"INFO"}, "Render settings set to the {!s} preset".format(self.preset))
        return {"FINISHED"}
