#    This file is part of Korman.
#
#    Korman 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.
#
#    Korman 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 Korman.  If not, see <http://www.gnu.org/licenses/>.

import bpy
from bpy.props import *

class TextureOperator:
    @classmethod
    def poll(cls, context):
        return context.scene.render.engine == "PLASMA_GAME" and context.texture


class TextureCollectionAddOperator(TextureOperator, bpy.types.Operator):
    bl_idname = "texture.plasma_collection_add"
    bl_label = "Add Item"
    bl_description = "Adds an item to the collection"

    group = StringProperty(name="Modifier", description="Attribute name of the PropertyGroup")
    collection = StringProperty(name="Collection", description="Attribute name of the collection property")
    name_prefix = StringProperty(name="Name Prefix", description="Prefix for autogenerated item names", default="Item")
    name_prop = StringProperty(name="Name Property", description="Attribute name of the item name property")

    def execute(self, context):
        mod = getattr(context.texture, self.group)
        collection = getattr(mod, self.collection)
        idx = len(collection)
        collection.add()
        if self.name_prop:
            setattr(collection[idx], self.name_prop, "{} {}".format(self.name_prefix, idx+1))
        return {"FINISHED"}


class TextureCollectionRemoveOperator(TextureOperator, bpy.types.Operator):
    bl_idname = "texture.plasma_collection_remove"
    bl_label = "Remove Item"
    bl_description = "Removes an item from the collection"

    group = StringProperty(name="Modifier", description="Attribute name of the PropertyGroup")
    collection = StringProperty(name="Collection", description="Attribute name of the collection property")
    index = IntProperty(name="Index", description="Item index to remove")

    def execute(self, context):
        mod = getattr(context.texture, self.group)
        collection = getattr(mod, self.collection)
        if len(collection) > self.index:
            collection.remove(self.index)
            return {"FINISHED"}
        else:
            return {"CANCELLED"}