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#
#  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.
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# ##### END GPL LICENSE BLOCK #####

# <pep8-80 compliant>

import bpy
from bpy.types import Operator
from bpy.props import (
    BoolProperty,
    EnumProperty,
)


class VIEW3D_OT_edit_mesh_extrude_individual_move(Operator):
    """Extrude each individual face separately along local normals"""
    bl_label = "Extrude Individual and Move"
    bl_idname = "view3d.edit_mesh_extrude_individual_move"

    @classmethod
    def poll(cls, context):
        obj = context.active_object
        return (obj is not None and obj.mode == 'EDIT')

    def execute(self, context):
        mesh = context.object.data
        select_mode = context.tool_settings.mesh_select_mode

        totface = mesh.total_face_sel
        totedge = mesh.total_edge_sel
        # totvert = mesh.total_vert_sel

        if select_mode[2] and totface == 1:
            bpy.ops.mesh.extrude_region_move(
                'INVOKE_REGION_WIN',
                TRANSFORM_OT_translate={
                    "orient_type": 'NORMAL',
                    "constraint_axis": (False, False, True),
                }
            )
        elif select_mode[2] and totface > 1:
            bpy.ops.mesh.extrude_faces_move('INVOKE_REGION_WIN')
        elif select_mode[1] and totedge >= 1:
            bpy.ops.mesh.extrude_edges_move('INVOKE_REGION_WIN')
        else:
            bpy.ops.mesh.extrude_vertices_move('INVOKE_REGION_WIN')

        # ignore return from operators above because they are 'RUNNING_MODAL',
        # and cause this one not to be freed. T24671.
        return {'FINISHED'}

    def invoke(self, context, _event):
        return self.execute(context)


class VIEW3D_OT_edit_mesh_extrude_move(Operator):
    """Extrude region together along the average normal"""
    bl_label = "Extrude and Move on Normals"
    bl_idname = "view3d.edit_mesh_extrude_move_normal"

    dissolve_and_intersect: BoolProperty(
        name="dissolve_and_intersect",
        default=False,
        description="Dissolves adjacent faces and intersects new geometry"
    )

    @classmethod
    def poll(cls, context):
        obj = context.active_object
        return (obj is not None and obj.mode == 'EDIT')

    @staticmethod
    def extrude_region(context, use_vert_normals, dissolve_and_intersect):
        mesh = context.object.data

        totface = mesh.total_face_sel
        totedge = mesh.total_edge_sel
        # totvert = mesh.total_vert_sel

        if totface >= 1:
            if use_vert_normals:
                bpy.ops.mesh.extrude_region_shrink_fatten(
                    'INVOKE_REGION_WIN',
                    TRANSFORM_OT_shrink_fatten={},
                )
            elif dissolve_and_intersect:
                bpy.ops.mesh.extrude_manifold(
                    'INVOKE_REGION_WIN',
                    MESH_OT_extrude_region={
                        "use_dissolve_ortho_edges": True,
                    },
                    TRANSFORM_OT_translate={
                        "orient_type": 'NORMAL',
                        "constraint_axis": (False, False, True),
                    },
                )
            else:
                bpy.ops.mesh.extrude_region_move(
                    'INVOKE_REGION_WIN',
                    TRANSFORM_OT_translate={
                        "orient_type": 'NORMAL',
                        "constraint_axis": (False, False, True),
                    },
                )

        elif totedge == 1:
            bpy.ops.mesh.extrude_region_move(
                'INVOKE_REGION_WIN',
                TRANSFORM_OT_translate={
                    # Don't set the constraint axis since users will expect MMB
                    # to use the user setting, see: T61637
                    # "orient_type": 'NORMAL',
                    # Not a popular choice, too restrictive for retopo.
                    # "constraint_axis": (True, True, False)})
                    "constraint_axis": (False, False, False),
                })
        else:
            bpy.ops.mesh.extrude_region_move('INVOKE_REGION_WIN')

        # ignore return from operators above because they are 'RUNNING_MODAL',
        # and cause this one not to be freed. T24671.
        return {'FINISHED'}

    def execute(self, context):
        return VIEW3D_OT_edit_mesh_extrude_move.extrude_region(context, False, self.dissolve_and_intersect)

    def invoke(self, context, _event):
        return self.execute(context)


class VIEW3D_OT_edit_mesh_extrude_shrink_fatten(Operator):
    """Extrude region together along local normals"""
    bl_label = "Extrude and Move on Individual Normals"
    bl_idname = "view3d.edit_mesh_extrude_move_shrink_fatten"

    @classmethod
    def poll(cls, context):
        obj = context.active_object
        return (obj is not None and obj.mode == 'EDIT')

    def execute(self, context):
        return VIEW3D_OT_edit_mesh_extrude_move.extrude_region(context, True, False)

    def invoke(self, context, _event):
        return self.execute(context)


class VIEW3D_OT_edit_mesh_extrude_manifold_normal(Operator):
    """Extrude manifold region along normals"""
    bl_label = "Extrude Manifold Along Normals"
    bl_idname = "view3d.edit_mesh_extrude_manifold_normal"

    @classmethod
    def poll(cls, context):
        obj = context.active_object
        return (obj is not None and obj.mode == 'EDIT')

    def execute(self, _context):
        bpy.ops.mesh.extrude_manifold(
            'INVOKE_REGION_WIN',
            MESH_OT_extrude_region={
                "use_dissolve_ortho_edges": True,
            },
            TRANSFORM_OT_translate={
                "orient_type": 'NORMAL',
                "constraint_axis": (False, False, True),
            },
        )
        return {'FINISHED'}

    def invoke(self, context, _event):
        return self.execute(context)


class VIEW3D_OT_transform_gizmo_set(Operator):
    """Set the current transform gizmo"""
    bl_label = "Transform Gizmo Set"
    bl_options = {'REGISTER', 'UNDO'}
    bl_idname = "view3d.transform_gizmo_set"

    extend: BoolProperty(
        name="Extend",
        default=False,
    )
    type: EnumProperty(
        name="Type",
        items=(
            ('TRANSLATE', "Move", ""),
            ('ROTATE', "Rotate", ""),
            ('SCALE', "Scale", ""),
        ),
        options={'ENUM_FLAG'},
    )

    @classmethod
    def poll(cls, context):
        area = context.area
        return area and (area.type == 'VIEW_3D')

    def execute(self, context):
        space_data = context.space_data
        space_data.show_gizmo = True
        attrs = ("show_gizmo_object_translate", "show_gizmo_object_rotate", "show_gizmo_object_scale")
        attr_active = tuple(
            attrs[('TRANSLATE', 'ROTATE', 'SCALE').index(t)]
            for t in self.type
        )
        if self.extend:
            for attr in attrs:
                if attr in attr_active:
                    setattr(space_data, attr, True)
        else:
            for attr in attrs:
                setattr(space_data, attr, attr in attr_active)
        return {'FINISHED'}

    def invoke(self, context, event):
        if not self.properties.is_property_set("extend"):
            self.extend = event.shift
        return self.execute(context)


classes = (
    VIEW3D_OT_edit_mesh_extrude_individual_move,
    VIEW3D_OT_edit_mesh_extrude_move,
    VIEW3D_OT_edit_mesh_extrude_shrink_fatten,
    VIEW3D_OT_edit_mesh_extrude_manifold_normal,
    VIEW3D_OT_transform_gizmo_set,
)
