"""Building feature assembly (`building=*`)."""

from osmassets.mesh import MeshBatch, add_roof, add_wall_panel, make_prism
from osmassets.osm import parse_height


def add_details(name, ring, height, industrial, materials, collection):
    footprint = ring[:-1] if len(ring) > 1 and ring[0] == ring[-1] else ring
    if len(footprint) < 3:
        return
    glass_mat = materials["factory_glass"] if industrial else materials["glass"]

    glass_batch = MeshBatch(name + "_Windows", collection, glass_mat)
    edges = list(zip(footprint, footprint[1:] + footprint[:1]))
    if industrial:
        band_height = min(1.8, max(0.75, height * 0.16))
        band_base = max(0.9, height * 0.52)
        for start, end in edges:
            add_wall_panel(glass_batch, start, end, band_base, band_height,
                           thickness=0.055, inset=0.12)
    else:
        floor_height = 3.25
        floor_count = max(1, int((height - 0.7) / floor_height))
        for floor in range(floor_count):
            band_base = 0.55 + floor * floor_height + 0.95
            if band_base + 1.25 > height - 0.18:
                break
            for start, end in edges:
                add_wall_panel(glass_batch, start, end, band_base, 1.25,
                               thickness=0.045, inset=0.10)
    glass_batch.finish()


def assemble(ring, way_id, tag, office_overrides, collection, materials):
    industrial = (tag.get("building") == "industrial" and
                  way_id not in office_overrides)
    source_height = max(3.0, parse_height(tag, 12.0))
    height = source_height if industrial or source_height >= 30.0 else 11.4
    material = materials["industrial"] if industrial else materials["default"]
    building_name = "Building_" + way_id
    building_obj = make_prism(building_name, ring, 0.08, height,
                              material, collection)
    if building_obj:
        building_obj["osm_height"] = source_height
        building_obj["render_height"] = height
        building_obj["building_kind"] = "industrial" if industrial else "office"
        building_obj["osm_building_tag"] = tag.get("building", "")
        building_obj["office_override"] = way_id in office_overrides
        bevel = building_obj.modifiers.new("Soft facade edges", "BEVEL")
        bevel.width = 0.16
        bevel.segments = 2
    roof_mat = (materials["industrial_roof"] if industrial
                else materials["office_roof"])
    add_roof(building_name, ring, height + 0.095, roof_mat, collection)
    add_details(building_name, ring, height, industrial, materials, collection)
    return 1, int(industrial), ring