#!/bin/bash -e
# shellcheck disable=SC2154,SC2207,SC2016,SC2086,SC2250,SC2312,SC2162

TOPDIR=$(pwd)

changelog=${TOPDIR}/changelog-${device}-${version}.md

declare -A before
if [[ -f gitstate-${device}-${version}.txt ]]
then
    read -a tmp < gitstate-${device}-${version}.txt
else
    tmp=($(repo forall -c 'echo "${REPO_PATH}:$(git rev-parse --short HEAD)"'))
fi
for i in "${tmp[@]}"; do
    IFS=: read -r folder commit <<<"${i}"
    before[${folder}]=${commit}
done

echo -e "# Build $(date '+%Y-%m-%d %H:%M:%S %Z')\n" >>"${changelog}"

tmp=($(repo forall -c 'echo "${REPO_PATH}:$(git rev-parse --short HEAD)"'))

for i in "${tmp[@]}"; do
    IFS=: read -r folder commit <<<"${i}"
    if [[ "${folder}" != lineage/* && "${before[${folder}]}" != "${commit}" ]]; then
        cd "${folder}" || continue
        log=$(git --no-pager log --pretty=format:"- %s" "${before[${folder}]}".."${commit}")
        if [[ $(echo -n "$log" | wc -c) != 0 ]]; then
            {
                echo "## ${folder} ${before[${folder}]}..${commit}"
                echo "$log"
                echo
            } >>"${changelog}"
        fi
        cd "${TOPDIR}" || continue
    fi
done
cat "${changelog}"

echo "${tmp[@]}" > gitstate-${device}-${version}.txt