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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.
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#  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>

bl_info = {
    "name": "Stanford PLY format",
    "author": "Bruce Merry, Campbell Barton",
    "version": (1, 0, 0),
    "blender": (2, 81, 6),
    "location": "File > Import-Export",
    "description": "Import-Export PLY mesh data with UV's and vertex colors",
    "warning": "",
    "wiki_url": "https://docs.blender.org/manual/en/latest/addons/io_mesh_ply.html",
    "support": 'OFFICIAL',
    "category": "Import-Export",
}

# Copyright (C) 2004, 2005: Bruce Merry, bmerry@cs.uct.ac.za
# Contributors: Bruce Merry, Campbell Barton

# To support reload properly, try to access a package var,
# if it's there, reload everything
if "bpy" in locals():
    import importlib
    if "export_ply" in locals():
        importlib.reload(export_ply)
    if "import_ply" in locals():
        importlib.reload(import_ply)


import os
import bpy
from bpy.props import (
    CollectionProperty,
    StringProperty,
    BoolProperty,
    EnumProperty,
    FloatProperty,
)
from bpy_extras.io_utils import (
    ImportHelper,
    ExportHelper,
    axis_conversion,
    orientation_helper
)


class ImportPLY(bpy.types.Operator, ImportHelper):
    """Load a PLY geometry file"""
    bl_idname = "import_mesh.ply"
    bl_label = "Import PLY"
    bl_options = {'UNDO'}

    files: CollectionProperty(
        name="File Path",
        description=(
            "File path used for importing "
            "the PLY file"
        ),
        type=bpy.types.OperatorFileListElement)

    directory: StringProperty()

    filename_ext = ".ply"
    filter_glob: StringProperty(default="*.ply", options={'HIDDEN'})

    def execute(self, context):
        paths = [os.path.join(self.directory, name.name)
                 for name in self.files]
        if not paths:
            paths.append(self.filepath)

        from . import import_ply

        for path in paths:
            import_ply.load(self, context, path)

        return {'FINISHED'}


@orientation_helper(axis_forward='Y', axis_up='Z')
class ExportPLY(bpy.types.Operator, ExportHelper):
    """Export a single object as a Stanford PLY with normals, """ \
    """colors and texture coordinates"""
    bl_idname = "export_mesh.ply"
    bl_label = "Export PLY"

    filename_ext = ".ply"
    filter_glob: StringProperty(default="*.ply", options={'HIDDEN'})

    use_mesh_modifiers: BoolProperty(
        name="Apply Modifiers",
        description="Apply Modifiers to the exported mesh",
        default=True,
    )
    use_normals: BoolProperty(
        name="Normals",
        description=(
            "Export Normals for smooth and "
            "hard shaded faces "
            "(hard shaded faces will be exported "
            "as individual faces)"
        ),
        default=True,
    )
    use_uv_coords: BoolProperty(
        name="UVs",
        description="Export the active UV layer",
        default=True,
    )
    use_colors: BoolProperty(
        name="Vertex Colors",
        description="Export the active vertex color layer",
        default=True,
    )

    global_scale: FloatProperty(
        name="Scale",
        min=0.01, max=1000.0,
        default=1.0,
    )

    @classmethod
    def poll(cls, context):
        return context.active_object is not None

    def execute(self, context):
        from . import export_ply

        from mathutils import Matrix

        keywords = self.as_keywords(
            ignore=(
                "axis_forward",
                "axis_up",
                "global_scale",
                "check_existing",
                "filter_glob",
            )
        )
        global_matrix = axis_conversion(
            to_forward=self.axis_forward,
            to_up=self.axis_up,
        ).to_4x4() @ Matrix.Scale(self.global_scale, 4)
        keywords["global_matrix"] = global_matrix

        filepath = self.filepath
        filepath = bpy.path.ensure_ext(filepath, self.filename_ext)

        return export_ply.save(self, context, **keywords)

    def draw(self, context):
        pass


class PLY_PT_export_transform(bpy.types.Panel):
    bl_space_type = 'FILE_BROWSER'
    bl_region_type = 'TOOL_PROPS'
    bl_label = "Transform"
    bl_parent_id = "FILE_PT_operator"

    @classmethod
    def poll(cls, context):
        sfile = context.space_data
        operator = sfile.active_operator

        return operator.bl_idname == "EXPORT_MESH_OT_ply"

    def draw(self, context):
        layout = self.layout
        layout.use_property_split = True
        layout.use_property_decorate = False  # No animation.

        sfile = context.space_data
        operator = sfile.active_operator

        layout.prop(operator, "axis_forward")
        layout.prop(operator, "axis_up")
        layout.prop(operator, "global_scale")


class PLY_PT_export_geometry(bpy.types.Panel):
    bl_space_type = 'FILE_BROWSER'
    bl_region_type = 'TOOL_PROPS'
    bl_label = "Geometry"
    bl_parent_id = "FILE_PT_operator"

    @classmethod
    def poll(cls, context):
        sfile = context.space_data
        operator = sfile.active_operator

        return operator.bl_idname == "EXPORT_MESH_OT_ply"

    def draw(self, context):
        layout = self.layout
        layout.use_property_split = True
        layout.use_property_decorate = False  # No animation.

        sfile = context.space_data
        operator = sfile.active_operator

        layout.prop(operator, "use_mesh_modifiers")
        layout.prop(operator, "use_normals")
        layout.prop(operator, "use_uv_coords")
        layout.prop(operator, "use_colors")


def menu_func_import(self, context):
    self.layout.operator(ImportPLY.bl_idname, text="Stanford (.ply)")


def menu_func_export(self, context):
    self.layout.operator(ExportPLY.bl_idname, text="Stanford (.ply)")


classes = (
    ImportPLY,
    ExportPLY,
    PLY_PT_export_transform,
    PLY_PT_export_geometry,
)


def register():
    for cls in classes:
        bpy.utils.register_class(cls)

    bpy.types.TOPBAR_MT_file_import.append(menu_func_import)
    bpy.types.TOPBAR_MT_file_export.append(menu_func_export)


def unregister():
    for cls in classes:
        bpy.utils.unregister_class(cls)

    bpy.types.TOPBAR_MT_file_import.remove(menu_func_import)
    bpy.types.TOPBAR_MT_file_export.remove(menu_func_export)

if __name__ == "__main__":
    register()
