# ##### BEGIN GPL LICENSE BLOCK #####
#
#  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 LICENSE BLOCK #####

# <pep8 compliant>

import bpy
from rigify import RigifyError
from rigify_utils import copy_bone_simple

METARIG_NAMES = tuple()
RIG_TYPE = "track_reverse"

# TODO
#def metarig_template():
#    # generated by rigify.write_meta_rig
#    bpy.ops.object.mode_set(mode='EDIT')
#    obj = bpy.context.active_object
#    arm = obj.data
#    bone = arm.edit_bones.new('Bone')
#    bone.head[:] = 0.0000, 0.0000, 0.0000
#    bone.tail[:] = 0.0000, 0.0000, 1.0000
#    bone.roll = 0.0000
#    bone.connected = False
#
#    bpy.ops.object.mode_set(mode='OBJECT')
#    pbone = obj.pose.bones['Bone']
#    pbone['type'] = 'copy'

bool_map = {0:False, 1:True,
            0.0:False, 1.0:True,
            "false":False, "true":True,
            "False":False, "True":True,
            "no":False, "yes":True,
            "No":False, "Yes":True}

def metarig_definition(obj, orig_bone_name):
    return (orig_bone_name,)




def main(obj, bone_definition, base_names, options):
    """ A bone that tracks bakwards towards its parent, while copying the
        location of it's target.
        Deformation only (no controls).
    """
    # Verify required parameter
    if "to" not in options:
        raise RigifyError("'%s' rig type requires a 'to' parameter (bone: %s)" % (RIG_TYPE, base_names[0]))
    if type(options["to"]) is not str:
        raise RigifyError("'%s' rig type 'to' parameter must be a string (bone: %s)" % (RIG_TYPE, base_names[0]))
    if ("ORG-" + options["to"]) not in obj.data.bones:
        raise RigifyError("'%s' rig type 'to' parameter must name a bone in the metarig (bone: %s)" % (RIG_TYPE, base_names[0]))

    eb = obj.data.edit_bones
    bb = obj.data.bones
    pb = obj.pose.bones

    bpy.ops.object.mode_set(mode='EDIT')
    arm = obj.data

    mbone1 = bone_definition[0]
    mbone2 = "ORG-" + options["to"]

    bone_e = copy_bone_simple(obj.data, mbone2, "DEF-%s.02" % base_names[bone_definition[0]])
    bone_e.connected = False
    bone_e.parent = eb[mbone1]
    bone_e.tail = eb[mbone1].head
    bone = bone_e.name



    bpy.ops.object.mode_set(mode='OBJECT')

    # Constraints
    con = pb[bone].constraints.new('COPY_LOCATION')
    con.target = obj
    con.subtarget = mbone2

    con = pb[bone].constraints.new('DAMPED_TRACK')
    con.target = obj
    con.subtarget = mbone1


    return tuple()

