#
# 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
from .utils.functions import get_sequences_under_cursor, apply_time_offset
from .utils.doc import doc_name, doc_idname, doc_brief, doc_description


class POWER_SEQUENCER_OT_snap_selection(bpy.types.Operator):
    """
    *Brief* Snap the entire selection to the time cursor.

    Automatically selects sequences if there is no active selection.
    To snap each strip individually, see Snap
    """

    doc = {
        "name": doc_name(__qualname__),
        "demo": "",
        "description": doc_description(__doc__),
        "shortcuts": [
            (
                {"type": "S", "value": "PRESS", "alt": True},
                {},
                "Snap selection to cursor",
            )
        ],
        "keymap": "Sequencer",
    }
    bl_idname = doc_idname(__qualname__)
    bl_label = doc["name"]
    bl_description = doc_brief(doc["description"])
    bl_options = {"REGISTER", "UNDO"}

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

    def execute(self, context):
        sequences = (
            context.selected_sequences
            if context.selected_sequences
            else get_sequences_under_cursor(context)
        )
        frame_first = min(
            sequences, key=lambda s: s.frame_final_start
        ).frame_final_start
        time_offset = context.scene.frame_current - frame_first
        apply_time_offset(context, sequences, time_offset)
        return {"FINISHED"}
