# IfcOpenShell - IFC toolkit and geometry engine
# Copyright (C) 2023 @Andrej730
#
# This file is part of IfcOpenShell.
#
# IfcOpenShell is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# IfcOpenShell 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.

import ifcopenshell.util.unit
from ifcopenshell.util.shape_builder import ShapeBuilder, V
from ifcopenshell.api.geometry.add_window_representation import create_ifc_window
from mathutils import Vector
from math import cos, radians

import collections


SUPPORTED_DOOR_TYPES = (
    "SINGLE_SWING_LEFT",
    "SINGLE_SWING_RIGHT",
    "DOUBLE_SWING_RIGHT",
    "DOUBLE_SWING_LEFT",
    "DOUBLE_DOOR_SINGLE_SWING",
    "DOUBLE_DOOR_DOUBLE_SWING",
    "SLIDING_TO_LEFT",
    "SLIDING_TO_RIGHT",
    "DOUBLE_DOOR_SLIDING",
)


def create_ifc_door_lining(
    builder: ShapeBuilder, size: Vector, thickness: list, position: Vector = V(0, 0, 0).freeze()
):
    """`thickness` of the profile is defined as list in the following order: `(SIDE, TOP)`

    `thickness` can be also defined just as 1 float value.
    """
    if not isinstance(thickness, collections.abc.Iterable):
        thickness = [thickness] * 2

    th_side, th_up = thickness

    points = [
        V(0.0, 0.0, 0.0),
        V(0.0, 0.0, size.z),
        V(size.x, 0.0, size.z),
        V(size.x, 0.0, 0.0),
        V(size.x - th_side, 0.0, 0.0),
        V(size.x - th_side, 0.0, size.z - th_up),
        V(th_side, 0.0, size.z - th_up),
        V(th_side, 0.0, 0.0),
    ]

    points = [p.xz for p in points]
    door_lining = builder.polyline(points, closed=True)
    door_lining = builder.extrude(
        door_lining,
        size.y,
        position_x_axis=V(1, 0, 0),
        position_z_axis=V(0, -1, 0),
        extrusion_vector=V(0, 0, -1),
    )
    builder.translate(door_lining, position)

    return door_lining


def create_ifc_box(builder: ShapeBuilder, size: Vector, position: Vector = V(0, 0, 0).freeze()):
    rect = builder.rectangle(size.xy)
    box = builder.extrude(rect, size.z, position=position, extrusion_vector=V(0, 0, 1))
    return box


class Usecase:
    def __init__(self, file, **settings):
        """units in settings expected to be in ifc project units"""
        self.file = file
        # http://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDoor.htm
        # http://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDoorTypeOperationEnum.htm
        # http://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDoorLiningProperties.htm
        # http://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDoorPanelProperties.htm
        self.settings = {"unit_scale": ifcopenshell.util.unit.calculate_unit_scale(self.file)}
        self.settings.update(
            {
                "context": None,  # IfcGeometricRepresentationContext
                "overall_height": self.convert_si_to_unit(2.0),
                "overall_width": self.convert_si_to_unit(0.9),
                # DOUBLE_DOOR_DOUBLE_SWING, DOUBLE_DOOR_FOLDING, DOUBLE_DOOR_LIFTING_VERTICAL,
                # DOUBLE_DOOR_SINGLE_SWING, DOUBLE_DOOR_SINGLE_SWING_OPPOSITE_LEFT,
                # DOUBLE_DOOR_SINGLE_SWING_OPPOSITE_RIGHT, DOUBLE_DOOR_SLIDING,
                # DOUBLE_SWING_LEFT, DOUBLE_SWING_RIGHT, FOLDING_TO_LEFT,
                # FOLDING_TO_RIGHT, LIFTING_HORIZONTAL, LIFTING_VERTICAL_LEFT,
                # LIFTING_VERTICAL_RIGHT, REVOLVING, REVOLVING_VERTICAL,
                # ROLLINGUP, SINGLE_SWING_LEFT, SINGLE_SWING_RIGHT, SLIDING_TO_LEFT,
                # SLIDING_TO_RIGHT, SWING_FIXED_LEFT, SWING_FIXED_RIGHT
                "operation_type": "SINGLE_SWING_LEFT",  # door type
                "lining_properties": {
                    "LiningDepth": self.convert_si_to_unit(0.050),
                    "LiningThickness": self.convert_si_to_unit(0.050),
                    # offset from the outer side of the wall (by Y-axis)
                    "LiningOffset": self.convert_si_to_unit(0.0),
                    # offset from the wall
                    "LiningToPanelOffsetX": self.convert_si_to_unit(0.025),
                    # offset from the X-axis (unlike windows)
                    "LiningToPanelOffsetY": self.convert_si_to_unit(0.025),
                    # transom - vertical distance between door and window panels
                    "TransomThickness": self.convert_si_to_unit(0.000),
                    # TransomOffset - distance from the bottom door opening
                    # to the beginning of the transom
                    # unlike windows TransomOffset which goes to the center of the transom
                    "TransomOffset": self.convert_si_to_unit(1.525),
                    "ShapeAspectStyle": None,  # DEPRECATED
                    # Casing cover wall faces around the opening
                    # on the left, right and upper sides
                    # Casing should be either on both sides of the wall or no casing
                    # If `LiningOffset` is present then therefore casing is not possible on outer wall
                    # therefore there will be no casing on inner wall either
                    "CasingDepth": self.convert_si_to_unit(0.005),
                    "CasingThickness": self.convert_si_to_unit(0.075),  # by Z-axis
                    # Threshold covers the bottom side of the opening
                    "ThresholdDepth": self.convert_si_to_unit(0.1),
                    "ThresholdThickness": self.convert_si_to_unit(0.025),  # by Z-axis
                    # offset by Y-axis
                    "ThresholdOffset": self.convert_si_to_unit(0.000),
                },
                "panel_properties": {
                    "PanelDepth": self.convert_si_to_unit(0.035),  # by Y
                    "PanelWidth": 1.0,  # as ratio to the clear door opening
                    "FrameDepth": self.convert_si_to_unit(0.035),  # by Y
                    "FrameThickness": self.convert_si_to_unit(0.035),  # by X
                    # LEFT, MIDDLE, RIGHT, NOTDEFINED
                    "PanelPosition": ...,  # NEVER USED
                    # defines the basic ways to describe how door panels operate
                    # basically how it opens
                    "PanelOperation": None,  # NEVER USED
                    "ShapeAspectStyle": None,  # DEPRECATED
                },
            }
        )
        for key, value in settings.items():
            self.settings[key] = value

    def execute(self):
        builder = ShapeBuilder(self.file)
        overall_height = self.settings["overall_height"]
        overall_width = self.settings["overall_width"]
        door_type = self.settings["operation_type"]
        double_swing_door = "DOUBLE_SWING" in door_type
        double_door = "DOUBLE_DOOR" in door_type
        sliding_door = "SLIDING" in door_type

        if door_type not in SUPPORTED_DOOR_TYPES:
            raise NotImplementedError(f'Door type "{door_type}" is not currently supported.')

        if self.settings["context"].TargetView == "ELEVATION_VIEW":
            rect = builder.rectangle(V(overall_width, 0, overall_height))
            representation_evelevation = builder.get_representation(self.settings["context"], rect)
            return representation_evelevation

        panel_props = self.settings["panel_properties"]
        lining_props = self.settings["lining_properties"]

        # lining params
        lining_depth = lining_props["LiningDepth"]
        lining_thickness_default = lining_props["LiningThickness"]
        lining_offset = lining_props["LiningOffset"]
        lining_to_panel_offset_x = (
            lining_props["LiningToPanelOffsetX"] if not sliding_door else lining_thickness_default
        )
        panel_depth = panel_props["PanelDepth"]
        lining_to_panel_offset_y_full = lining_props["LiningToPanelOffsetY"] if not sliding_door else -panel_depth

        transom_thickness = lining_props["TransomThickness"] / 2
        transfom_offset = lining_props["TransomOffset"]
        if transom_thickness == 0:
            transfom_offset = 0
        window_lining_height = overall_height - transfom_offset - transom_thickness

        side_lining_thickness = lining_thickness_default
        panel_lining_overlap_x = max(lining_thickness_default - lining_to_panel_offset_x, 0) if not sliding_door else 0

        top_lining_thickness = transom_thickness or lining_thickness_default
        panel_top_lining_overlap_x = max(top_lining_thickness - lining_to_panel_offset_x, 0) if not sliding_door else 0
        door_opening_width = overall_width - lining_to_panel_offset_x * 2
        if double_swing_door:
            side_lining_thickness = side_lining_thickness - panel_lining_overlap_x
            top_lining_thickness = top_lining_thickness - panel_top_lining_overlap_x

        threshold_thickness = lining_props["ThresholdThickness"]
        threshold_depth = lining_props["ThresholdDepth"]
        threshold_offset = lining_props["ThresholdOffset"]
        threshold_width = overall_width - side_lining_thickness * 2

        casing_thickness = lining_props["CasingThickness"]
        casing_depth = lining_props["CasingDepth"]

        # panel params
        panel_width = door_opening_width * panel_props["PanelWidth"]
        frame_depth = panel_props["FrameDepth"]
        frame_thickness = panel_props["FrameThickness"]
        frame_height = window_lining_height - lining_to_panel_offset_x * 2
        glass_thickness = self.convert_si_to_unit(0.01)

        # handle dimensions (hardcoded)
        handle_size = self.convert_si_to_unit(V(120, 40, 20) * 0.001)
        handle_offset = self.convert_si_to_unit(V(60, 0, 1000) * 0.001)  # to the handle center
        handle_center_offset = V(handle_size.y / 2, 0, handle_size.z) / 2
        slider_arrow_symbol_size = self.convert_si_to_unit(30 * 0.001)

        if transfom_offset:
            panel_height = transfom_offset + transom_thickness - lining_to_panel_offset_x - threshold_thickness
            lining_height = transfom_offset + transom_thickness
        else:
            panel_height = overall_height - lining_to_panel_offset_x - threshold_thickness
            lining_height = overall_height

        # add lining
        lining_size = V(overall_width, lining_depth, lining_height)
        lining_thickness = [side_lining_thickness, top_lining_thickness]

        def l_shape_check(lining_thickness):
            return lining_to_panel_offset_y_full < lining_depth and any(
                lining_to_panel_offset_x < th for th in lining_thickness
            )

        # create 2d representation
        if self.settings["context"].TargetView == "PLAN_VIEW":
            items_2d = []
            panel_size = V(panel_width, panel_depth)
            if not sliding_door:
                panel_position = V(lining_to_panel_offset_x, lining_depth)
            else:
                panel_position = V(lining_to_panel_offset_x, -panel_size.y)

            if self.settings["context"].ContextIdentifier == "Annotation":
                # only sliding door has annotation representation
                if not sliding_door:
                    return None

                # arrow symbol
                arrow_symbol = []
                arrow_offset = slider_arrow_symbol_size / cos(radians(15))
                arrow_symbol.append(
                    builder.polyline(
                        points=(V(0.35 * panel_size.x, 0), V(0.65 * panel_size.x, 0)),
                    )
                )
                arrow_symbol.append(
                    builder.polyline(
                        points=(
                            V(slider_arrow_symbol_size, arrow_offset),
                            V(0, 0),
                            V(slider_arrow_symbol_size, -arrow_offset),
                        ),
                        position_offset=V(0.35 * panel_size.x, 0),
                    )
                )

                builder.translate(arrow_symbol, panel_position + V(0, -arrow_offset * 1.5))

                items_2d.extend(arrow_symbol)

                representation_2d = builder.get_representation(self.settings["context"], items_2d, "Curve2D")
                return representation_2d

            door_items = []
            # create lining
            if l_shape_check([side_lining_thickness]):
                lining_points = [
                    V(0, 0),
                    V(0, lining_depth),
                    V(lining_to_panel_offset_x, lining_depth),
                    V(lining_to_panel_offset_x, lining_to_panel_offset_y_full),
                    V(lining_thickness_default, lining_to_panel_offset_y_full),
                    V(lining_thickness_default, 0),
                ]
                lining = builder.polyline(lining_points, closed=True)
            else:
                lining = builder.rectangle(V(side_lining_thickness, lining_depth))

            items_2d.append(lining)
            items_2d.append(
                builder.mirror(lining, mirror_axes=V(1, 0), mirror_point=V(overall_width / 2, 0), create_copy=True)
            )

            # TODO: make second swing lines dashed
            def create_ifc_door_panel_2d(panel_size, panel_position, door_swing_type, sliding=False):
                if sliding:
                    return create_ifc_door_sliding_panel_2d(panel_size, panel_position, door_swing_type)

                door_items = []
                panel_size = panel_size.yx
                # create semi-semi-circle
                if double_swing_door:
                    trim_points_mask = (3, 1)
                    second_swing_line = builder.polyline(
                        points=(V(0, 0), V(0, -panel_size.y), V(panel_size.x, -panel_size.y))
                    )
                    door_items.append(second_swing_line)
                else:
                    trim_points_mask = (0, 1)
                semicircle = builder.create_ellipse_curve(
                    panel_size.y - panel_size.x,
                    panel_size.y,
                    trim_points_mask=trim_points_mask,
                    position=V(panel_size.x, 0),
                )
                door_items.append(semicircle)

                # create door
                door = builder.rectangle(panel_size)
                door_items.append(door)

                builder.translate(door_items, panel_position)

                if door_swing_type == "RIGHT":
                    mirror_point = panel_position + V(panel_size.y / 2, 0)
                    builder.mirror(door_items, mirror_axes=V(1, 0), mirror_point=mirror_point)
                return door_items

            def create_ifc_door_sliding_panel_2d(panel_size, panel_position, door_swing_type):
                door = builder.rectangle(panel_size, position=panel_position - V(panel_size.x * 0.5, 0))

                if door_swing_type == "RIGHT":
                    mirror_point = panel_position + V(panel_size.x / 2, 0)
                    builder.mirror(door, mirror_axes=V(1, 0), mirror_point=mirror_point)
                return [door]

            door_items = []
            if double_door:
                panel_size.x = panel_size.x / 2
                door_items.extend(create_ifc_door_panel_2d(panel_size, panel_position, "LEFT", sliding_door))

                mirror_point = panel_position + V(door_opening_width / 2, 0)
                door_items.extend(
                    builder.mirror(door_items, mirror_axes=V(1, 0), mirror_point=mirror_point, create_copy=True)
                )
            else:
                door_swing_type = "LEFT" if door_type.endswith("LEFT") else "RIGHT"
                door_items.extend(create_ifc_door_panel_2d(panel_size, panel_position, door_swing_type, sliding_door))
            items_2d.extend(door_items)

            builder.translate(items_2d, V(0, lining_offset))
            representation_2d = builder.get_representation(self.settings["context"], items_2d)
            return representation_2d

        lining_items = []
        main_lining_size = lining_size

        # need to check offsets to decide whether lining should be rectangle
        # or L shaped
        if l_shape_check(lining_thickness):
            main_lining_size = lining_size.copy()
            main_lining_size.y = lining_to_panel_offset_y_full

            second_lining_size = lining_size.copy()
            second_lining_size.y = lining_size.y - lining_to_panel_offset_y_full
            second_lining_position = V(0, lining_to_panel_offset_y_full, 0)
            second_lining_thickness = [min(th, lining_to_panel_offset_x) for th in lining_thickness]

            second_lining = create_ifc_door_lining(
                builder, second_lining_size, second_lining_thickness, second_lining_position
            )
            lining_items.append(second_lining)

        main_lining = create_ifc_door_lining(builder, main_lining_size, lining_thickness)
        lining_items.append(main_lining)

        # add threshold
        if not threshold_thickness:
            threshold_items = []
        else:
            threshold_size = V(threshold_width, threshold_depth, threshold_thickness)
            threshold_position = V(side_lining_thickness, threshold_offset, 0)
            threshold_items = [create_ifc_box(builder, threshold_size, threshold_position)]

        # add casings
        casing_items = []
        if not lining_offset and casing_thickness:
            casing_wall_overlap = max(casing_thickness - lining_thickness_default, 0)
            inner_casing_thickness = [
                casing_thickness - panel_lining_overlap_x,
                casing_thickness - panel_top_lining_overlap_x,
            ]
            outer_casing_thickness = inner_casing_thickness.copy() if double_swing_door else casing_thickness

            casing_size = V(overall_width + casing_wall_overlap * 2, casing_depth, overall_height + casing_wall_overlap)
            casing_position = V(-casing_wall_overlap, -casing_depth, 0)
            outer_casing = create_ifc_door_lining(builder, casing_size, outer_casing_thickness, casing_position)
            casing_items.append(outer_casing)

            inner_casing_position = V(-casing_wall_overlap, lining_depth, 0)
            inner_casing = create_ifc_door_lining(builder, casing_size, inner_casing_thickness, inner_casing_position)
            casing_items.append(inner_casing)

        def create_ifc_door_panel(panel_size, panel_position, door_swing_type):
            door_items = []
            # add door panel
            door_items.append(create_ifc_box(builder, panel_size, panel_position))
            # add door handle
            handle_points = [
                V(0, 0),
                V(0, -handle_size.y),
                V(handle_size.x, -handle_size.y),
                V(handle_size.x, -handle_size.y / 2),
                V(handle_size.y / 2, -handle_size.y / 2),
                V(handle_size.y / 2, 0),
            ]
            handle_polyline = builder.polyline(handle_points, closed=True)

            handle_position = panel_position + handle_offset - handle_center_offset

            door_handle = builder.extrude(handle_polyline, handle_size.z, position=handle_position)
            door_items.append(door_handle)

            if door_swing_type == "LEFT":
                builder.mirror(
                    door_handle, mirror_axes=V(1, 0), mirror_point=panel_position.xy + V(panel_size.x / 2, 0)
                )

            door_handle_mirrored = builder.mirror(
                door_handle,
                mirror_axes=V(0, 1),
                mirror_point=handle_position.xy + V(0, panel_size.y / 2),
                create_copy=True,
            )
            door_items.append(door_handle_mirrored)
            return door_items

        door_items = []
        panel_size = V(panel_width, panel_depth, panel_height)
        panel_position = V(lining_to_panel_offset_x, lining_to_panel_offset_y_full, threshold_thickness)

        if double_door:
            # keeping a little space between doors for readibility
            double_door_offset = self.convert_si_to_unit(0.001)
            panel_size.x = panel_size.x / 2 - double_door_offset
            door_items.extend(create_ifc_door_panel(panel_size, panel_position, "LEFT"))

            mirror_point = panel_position + V(door_opening_width / 2, 0, 0)
            door_items.extend(
                builder.mirror(door_items, mirror_axes=V(1, 0), mirror_point=mirror_point.xy, create_copy=True)
            )
        else:
            door_swing_type = "LEFT" if door_type.endswith("LEFT") else "RIGHT"
            door_items.extend(create_ifc_door_panel(panel_size, panel_position, door_swing_type))

        # add on top window
        if not transom_thickness:
            window_lining_items = []
            frame_items = []
            glass_items = []
        else:
            window_lining_thickness = [
                side_lining_thickness,
                lining_thickness_default,
                side_lining_thickness,
                transom_thickness,
            ]
            window_lining_thickness.append(transom_thickness)
            window_lining_size = V(overall_width, lining_depth, window_lining_height)
            window_position = V(0, 0, overall_height - window_lining_height)
            frame_size = V(door_opening_width, frame_depth, frame_height)
            window_lining_items, frame_items, glass_items = create_ifc_window(
                builder,
                window_lining_size,
                window_lining_thickness,
                lining_to_panel_offset_x,
                lining_to_panel_offset_y_full,
                frame_size,
                frame_thickness,
                glass_thickness,
                window_position,
                self.settings["unit_scale"],
            )

        lining_offset_items = lining_items + door_items + window_lining_items + frame_items + glass_items
        builder.translate(lining_offset_items, V(0, lining_offset, 0))

        output_items = lining_offset_items + threshold_items + casing_items

        representation = builder.get_representation(self.settings["context"], output_items)
        return representation

    def convert_si_to_unit(self, value):
        si_conversion = 1 / self.settings["unit_scale"]
        if isinstance(value, Vector):
            return V(*[i * si_conversion for i in value])
        return value * si_conversion