#!/bin/bash -
# echo "POST-CHECKOUT"
# echo "PREV-HEAD=$1"
# echo "CURR-HEAD=$2"
# echo "BRANCH-CHECKOUT=$3"

readonly CHECKOUT_HISTORY_FILE="/opt/app/tools/atbupdate/checkout_history"
readonly GIT_UPDATE_LOG="/opt/app/tools/atbupdate/update_log.csv"
readonly OPKG_COMMANDS_FILE="/etc/psa_update/opkg_commands"

if [ -f $CHECKOUT_HISTORY_FILE ]; then
    # repo: customer_281
    readonly repo=$(basename $(git rev-parse --show-toplevel))
    # branch: customer_281:HEAD->zg1/zone1,origin/zg1/zone1 
    readonly branch=$(git log --graph --all --decorate $2 | head -n 1 | sed -E -e 's/(.*?)\((.*)\)/\2/g' | sed -E -e s/[[:space:]]//g)
    readonly line="$repo:$branch"
    readonly now="$(date +%Y-%m-%dT%T)"
    if ! grep -Eq "$line" $CHECKOUT_HISTORY_FILE; then
        # line not found. first checkout of this branch (on this PSA).
        # mark dc and print-templates to be downloaded by update-tool.
        echo $line >> $CHECKOUT_HISTORY_FILE
        echo "DOWNLOAD, /etc/dc/dc2c.4.21.bin, $now, N/A" >> $GIT_UPDATE_LOG
        echo "DOWNLOAD, /etc/psa_config/DC2C_print01.json, $now, N/A" >> $GIT_UPDATE_LOG
        echo "DOWNLOAD, /etc/psa_config/DC2C_print02.json, $now, N/A" >> $GIT_UPDATE_LOG
        echo "DOWNLOAD, /etc/psa_config/DC2C_print03.json, $now, N/A" >> $GIT_UPDATE_LOG
        echo "DOWNLOAD, /etc/psa_config/DC2C_print04.json, $now, N/A" >> $GIT_UPDATE_LOG
        echo "DOWNLOAD, /etc/psa_config/DC2C_print29.json, $now, N/A" >> $GIT_UPDATE_LOG
        echo "DOWNLOAD, /etc/psa_config/DC2C_print32.json, $now, N/A" >> $GIT_UPDATE_LOG
        if grep -q . "${OPKG_COMMANDS_FILE}"; then
            readarray opkg_commands < <(cat $OPKG_COMMANDS_FILE)
            for opkg_c in "${opkg_commands[@]}"; do
                # check for lines longer than 'opkg '
                if [ "${#opkg_c}" -gt 4 ]; then
                    # comment: spaces, at least one '#'
                    grep -qE '^[[:space:]]*#+.*$' <<< "$opkg_c" && continue
                
                    echo "DDD=${#opkg_c}DDD"
                    echo -n "EXECUTE, $opkg_c, $now, N/A" | tr -d '\n\r' >> $GIT_UPDATE_LOG 2>&1
                    echo "" >> $GIT_UPDATE_LOG 2>&1
                fi
            done
        fi
    else
        echo "Found existing line: $line. Do nothing"
    fi
else
    echo "*******************************************************"
    echo "     $CHECKOUT_HISTORY_FILE DOES NOT EXIST !!!         "
    echo "*******************************************************"
fi