#!/bin/bash -

# FILE="/tmp/post-merge$(date +%FT%H-%M-%S)"
# commit=$(git rev-parse --verify HEAD)
# echo "$commit $(git cat-file commit $commit)" >> /tmp/post-merge

# Redirect output to stderr.
exec 1>&2

if [ -z $IFS ]; then
    IFS=$'\n'
fi

GIT_UPDATE_LOG=/opt/app/tools/atbupdate/update_log.csv

#TODO: use in UpdateController

get_blob () {   # get the blob of the file(name) passed as $1
                # note: this can be used for any file in the filesystem
    echo $(git hash-object $1)
}

get_commit_for_blob () {
    # search for the blob in all commits for the file(name) $1
    echo $(git log --all --pretty=format:%H -- $2   |
           xargs -I{} bash -c "git ls-tree {} -- $2 |
           grep -q $1 && echo -n {} && head -n 1")
}

write_log_file () {
    local __date = $(date +"%Y-%m-%dT%T")
    for fn in $(git diff-tree -r HEAD@{1} HEAD --name-only); do
        if grep -E -q "(DC.*json|dc.*hex|dc.*bin|tariff.*json)" <<< $fn; then
            # called in repository: $fn is e.g. etc/psa_tariff/tariff01.json
            # add '/' prefix
            fn=$(echo $fn | awk '{ printf "/"$0 }')
            # if [[ -f "$fn" ]]; then
            #    blob=$(get_blob "$fn")
            #    commit=$(get_commit_for_blob $blob "$fn")
            #    fsize=$(ls -l "$fn" | awk '{ print $5 }')
            #    echo "$fn $fsize $blob $commit" >> $GIT_PULL_TMP
            # fi
            echo "DOWNLOAD, $fn, $__date, N/A" >> "$GIT_UPDATE_LOG"
        fi
        if grep -E -q ".*opkg_commands" <<< $fn; then
            readarray opkg_commands < <(cat $fn)
            for opkg_c in "${opkg_commands[@]}"; do
                test -z $opkg_c && continue;
                test ! -z $(grep -E "^\s*[#]+.*$" <<< $opkg_c) && continue
                echo -n "EXECUTE, $opkg_c, $__date, N/A" | tr -d '\n\r' >> $GIT_UPDATE_LOG 2>&1
                echo "" >> $GIT_UPDATE_LOG 2>&1
            done
            # source "$fn"
        fi
    done
}

write_log_file