#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
APPIMAGE_ROOT="${ROOT_DIR}/appimage"
BUILD_DIR="${APPIMAGE_ROOT}/build"
APPDIR="${BUILD_DIR}/AppDir"
DIST_DIR="${APPIMAGE_ROOT}/dist"

APPIMAGE_BUILDER_BIN="${APPIMAGE_BUILDER_BIN:-appimage-builder}"

for cmd in uv "${APPIMAGE_BUILDER_BIN}"; do
    if ! command -v "${cmd}" >/dev/null 2>&1; then
        echo "Missing required command: ${cmd}" >&2
        echo "See docs/appimage.md for setup instructions." >&2
        exit 1
    fi
done

mkdir -p "${BUILD_DIR}" "${DIST_DIR}"
rm -rf "${APPDIR}"
mkdir -p "${APPDIR}"

cd "${ROOT_DIR}"
uv export \
  --frozen \
  --no-dev \
  --no-emit-project \
  --no-hashes \
  --format requirements-txt \
  --output-file "${BUILD_DIR}/requirements.txt"
uv build --wheel --out-dir "${BUILD_DIR}"

WHEEL_PATH="$(ls -1 "${BUILD_DIR}"/scanslicer-*.whl | head -n 1)"
if [[ -z "${WHEEL_PATH}" ]]; then
    echo "Could not find built wheel in ${BUILD_DIR}" >&2
    exit 1
fi
printf "%s\n" "${WHEEL_PATH}" >> "${BUILD_DIR}/requirements.txt"

export SCANSLICER_ROOT="${ROOT_DIR}"
export SCANSLICER_APPDIR="${APPDIR}"
export SCANSLICER_REQUIREMENTS="${BUILD_DIR}/requirements.txt"

cd "${BUILD_DIR}"
"${APPIMAGE_BUILDER_BIN}" --recipe "${ROOT_DIR}/packaging/appimage/AppImageBuilder.yml"

mkdir -p "${DIST_DIR}"
find "${BUILD_DIR}" -maxdepth 1 -type f \( -name "*.AppImage" -o -name "*.zsync" \) -exec mv -f {} "${DIST_DIR}/" \;

echo "AppImage build complete. Output in ${DIST_DIR}"