#!/usr/bin/env bash
# Export every printable part to stl/, each turned to its print orientation and
# placed on the bed (z = 0). Run from anywhere.
set -euo pipefail

DIR="$(cd "$(dirname "$0")" && pwd)"
cd "$DIR"
mkdir -p stl

if ! command -v openscad &>/dev/null; then
    echo "Error: openscad not found in PATH" >&2
    exit 1
fi

# name | source file | print-orientation transform applied to the module call
render() {
    local name="$1" src="$2" body="$3" wrap
    wrap="$(mktemp "${TMPDIR:-/tmp}/_bp_XXXX.scad")"
    {
        echo "parameters_only = false;"
        echo "include <$DIR/tapo_ceiling_mount_parameters.scad>;"
        echo "use <$DIR/$src>;"
        echo "$body"
    } > "$wrap"
    echo "Rendering stl/$name.stl"
    openscad --render -o "stl/$name.stl" "$wrap"
    rm -f "$wrap"
}

# A part flipped rim-down. OpenSCAD snaps vertices to a 2^-20 mm grid, so the
# flipped rim can land a hair above or below z = 0. Sink the part by 0.01 um
# and clip it at z = 0, so the rim sits exactly on the bed.
flipped() {
    echo "intersection() { translate([0,0,-1e-5]) translate([0,0, $1]) mirror([0,0,1]) $2 translate([-500,-500,0]) cube(1000); }"
}

render inner_clamps tapo_ceiling_inner_clamp.scad \
    "$(flipped clamp_boss_height "tapo_inner_clamp_pair();")"
render inner_clamp tapo_ceiling_inner_clamp.scad \
    "$(flipped clamp_boss_height "tapo_inner_clamp();")"
render outer_plate tapo_ceiling_outer_plate.scad \
    "translate([0,0, plate_thickness + max(centering_lip_height, screw_boss_h)]) mirror([0,0,1]) tapo_outer_plate();"
render camera_connector tapo_ceiling_camera_connector.scad \
    "$(flipped conn_top_z "camera_connector();")"
render camera_adapter_blank tapo_ceiling_camera_adapter_blank.scad \
    "$(flipped adapter_rim_z "tapo_camera_adapter_blank();")"
render camera_adapter_tapo_original_base tapo_ceiling_camera_adapter_tapo_original_base.scad \
    "$(flipped adapter_rim_z "tapo_camera_adapter_original_base();")"
render camera_adapter_tapo tapo_ceiling_camera_adapter_tapo.scad \
    "$(flipped adapter_rim_z "tapo_camera_adapter_tapo();")"

render nut_fit_test tapo_ceiling_nut_fit_test.scad \
    "tapo_nut_fit_test_print();"
render tapo_base_test_set tapo_ceiling_tapo_base.scad \
    "for (i = [0 : len(tapo_fit_gaps) - 1]) translate([i * 62, 0, 0]) tapo_base(tapo_fit_gaps[i], i + 1);"
render tapo_base tapo_ceiling_tapo_base.scad \
    "tapo_base(tapo_lug_gap);"

echo "Done. Print 1 plate, 1 linked clamp pair, 1 connector, 1 adapter."