"""Offline evidence preview using the actual authored generator (not browser acceptance)."""
import ast
import json
import math
import sys
from pathlib import Path
import bpy
import bmesh
from mathutils import Vector
from mathutils.geometry import tessellate_polygon

root = Path(__file__).resolve().parents[2]
source = Path(__file__).with_name('assemble-cad-bim.py')
module = ast.parse(source.read_text(encoding='utf-8'))
functions = {'ring_area', 'as_ccw', 'prism_triangles', 'facade_window_count', 'poly_prism',
             'prism_volume_sign', 'sourced_roof', 'apply_roof_uv'}
textures = json.loads((root / 'tools/city-massing/city/cad-bim/near-estate-pilot-input/roof-textures.json').read_text())
namespace = {'bpy': bpy, 'bmesh': bmesh, 'math': math, 'Vector': Vector,
             'tessellate_polygon': tessellate_polygon, 'ARCHITECTURE': True, 'ROOF_TEXTURES': textures}
exec(compile(ast.Module(body=[node for node in module.body if isinstance(node, ast.FunctionDef)
                             and node.name in functions], type_ignores=[]), str(source), 'exec'), namespace)
bpy.ops.object.select_all(action='SELECT')
bpy.ops.object.delete(use_global=False)
def material(name, color, roughness=0.7):
    m = bpy.data.materials.new(name)
    m.diffuse_color = (*color, 1)
    m.use_nodes = True
    shader = m.node_tree.nodes.get('Principled BSDF')
    shader.inputs['Base Color'].default_value = (*color, 1)
    shader.inputs['Roughness'].default_value = roughness
    return m
wall = material('Preview_cream', (0.68, 0.65, 0.55))
window = material('Preview_glass', (0.06, 0.17, 0.21), 0.25)
door = material('Preview_storey', (0.20, 0.21, 0.22))
roof = namespace['sourced_roof']('cad-20556', wall)
plan = json.loads((root / 'tools/city-massing/city/cad-bim/near-estate-pilot-input/seated-plan.json').read_text())
b = next(b for b in plan['buildings'] if b['id'] == 'cad-20556')
obj = namespace['poly_prism'](namespace['as_ccw'](b['footprintENU']), b['foundationBottom'], b['positionENU'][2] + b['heightM'],
                             wall, roof, b['positionENU'], b['floors'], 'lod0', window, door)
bpy.context.collection.objects.link(obj)
namespace['apply_roof_uv'](obj, b['id'])
# UVs baked using original ENU coordinates before recentering only for this offline preview.
obj.location -= Vector(b['positionENU'])
scene = bpy.context.scene
scene.render.engine = 'CYCLES'
scene.cycles.samples = 32
scene.render.resolution_x = 1280
scene.render.resolution_y = 800
scene.render.resolution_percentage = 100
scene.world.color = (0.22, 0.22, 0.22)
bpy.ops.object.camera_add(location=(78, -85, 60))
camera = bpy.context.object
camera.rotation_euler = (Vector((0, 0, 9)) - camera.location).to_track_quat('-Z', 'Y').to_euler()
camera.data.type = 'ORTHO'
camera.data.ortho_scale = 95
scene.camera = camera
bpy.ops.object.light_add(type='AREA', location=(0, -25, 65))
bpy.context.object.data.energy = 90000
bpy.context.object.data.size = 60
scene.render.image_settings.file_format = 'PNG'
scene.render.filepath = str(root / '.scratch/cockpit-shell-panel-layout/verify/artifacts/t35/near-building-offline.png')
bpy.ops.render.render(write_still=True)
print('OFFLINE_MODEL_PREVIEW', scene.render.filepath)