#!/bin/bash
set -e

# version check: https://github.com/oxipng/oxipng/releases
OXIPNG_VERSION="10.1.1"
dpkgArch="$(dpkg --print-architecture)"

case "${dpkgArch##*-}" in
    amd64) OXIPNG_FILE="oxipng-${OXIPNG_VERSION}-x86_64-unknown-linux-musl.tar.gz"; OXIPNG_HASH='a7e13e06040dea5fe1298668ac99afbe0ed781610a9e4b27d62a8850b3fdf273' ;;
    arm64) OXIPNG_FILE="oxipng-${OXIPNG_VERSION}-aarch64-unknown-linux-musl.tar.gz"; OXIPNG_HASH='d8b599202378b038fc7571ba6ffd5f65592529a694f0315a7d436863c56029ed' ;;
    *) echo >&2 "unsupported architecture: ${dpkgArch}"; exit 1 ;;
esac

# Install other deps
apt -y -q install advancecomp jpegoptim libjpeg-turbo-progs

# jhead tag 3.08, fetched by commit since tags are mutable
JHEAD_COMMIT="4d04ac965632e35a65709c7f92a857a749e71811"
git init -q /tmp/jhead
git -C /tmp/jhead fetch -q --depth 1 https://github.com/Matthias-Wandel/jhead.git "$JHEAD_COMMIT"
git -C /tmp/jhead checkout -q "$JHEAD_COMMIT"
cd /tmp/jhead && make && cp /tmp/jhead/jhead /usr/local/bin/jhead
cd / && rm -rf /tmp/jhead

mkdir /oxipng-install
cd /oxipng-install

wget -q https://github.com/oxipng/oxipng/releases/download/v${OXIPNG_VERSION}/${OXIPNG_FILE}
sha256sum ${OXIPNG_FILE}
echo "${OXIPNG_HASH} ${OXIPNG_FILE}" | sha256sum -c
tar --strip-components=1 -xzf $OXIPNG_FILE
cp -v ./oxipng /usr/local/bin
cd / && rm -fr /oxipng-install