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

DEVICE="${1:-komodo}"
WORK_DIR="${MONTANAOS_WORK:-$HOME/montanaos-build}"
MONTANAOS_ROOT="$(cd "$(dirname "$0")/.." && pwd)"

LOCK_COMMIT="$(git -C "$MONTANAOS_ROOT" rev-parse HEAD)"
LOCK_SHORT="$(git -C "$MONTANAOS_ROOT" rev-parse --short=12 HEAD)"
SOURCE_DATE_EPOCH="$(git -C "$MONTANAOS_ROOT" log -1 --format=%ct HEAD)"
export SOURCE_DATE_EPOCH

if [[ -n "$(git -C "$MONTANAOS_ROOT" status --porcelain)" ]]; then
    echo "ERROR: working tree dirty. Reproducible builds require clean tree."
    echo "Either commit changes or stash before building a release."
    exit 1
fi

cd "$WORK_DIR/grapheneos"

unset USE_CCACHE
export USE_CCACHE=0

source build/envsetup.sh
lunch "${DEVICE}-cur-user"

m vendorbootimage vendorkernelbootimage
m target-files-package

OUT_DIR="out/target/product/$DEVICE"
ZIP_NAME="MontanaOS-${DEVICE}-${LOCK_SHORT}.zip"

if [[ -f "$OUT_DIR/$ZIP_NAME" ]]; then
    echo
    echo "Build complete: $OUT_DIR/$ZIP_NAME"
    echo "MontanaOS commit: $LOCK_COMMIT"
    echo "SOURCE_DATE_EPOCH: $SOURCE_DATE_EPOCH"
    sha256sum "$OUT_DIR/$ZIP_NAME"
else
    echo "ERROR: expected output $OUT_DIR/$ZIP_NAME not found"
    ls "$OUT_DIR" | head
    exit 1
fi