# !/bin/bash -

source ./general_utils
source ./log_helpers
source ./git_helpers
source ./update_psa_helpers
source ./read_config
source ./news_to_ismas
source ./news_from_ismas

trap collect_current_configuration EXIT

collect_current_configuration () {
    local func="${FUNCNAME[0]}"

    # TODO: eventuell muss die version neu berechnet werden
    current_settings_to_ismas

    #for line in $(cat $PSA_UPDATE_CONF |\
    #          jq -r .conf.szeged.zg[$ZONE_GROUP].z[$ZONE].etc.psa_config)
    #do
    #    conf_file="$(echo $line | 
    #                 sed -E -ne 's/^[^{}]\s+\"(DC2C_[[:alnum:]]+)\".*$/\1/gp')"
    #    if ! [ -z $conf_file ]; then
    #        local v=$(cat "$psa_config_dir/${conf_file}.json" | jq -r .version)
    #        echo "$conf_file.json version=$v"
    #    fi
    #done
}

update_psa() {

    if ! updates_available; then    # check for false alarm
        update_psa_false_alarm "update requested, but no WAIT state detected"
        exit $?
    fi

    update_psa_activated    # message to ISMAS
            
    local func="${FUNCNAME[0]}"

    log_debug "$func:${LINENO}: fetch/merge updates..."
   
    # Fetch new updates (using git). but only when repository has already been
    # cloned.
    if [ $GIT_CLONE_EXECUTED -eq 0 ]; then
        if ! fetch_customer_updates; then
            log_error "$func:${LINENO}: fetch no data for $customer_id"\
                "-> no files to update -> no psa update"
            update_psa_false_alarm \
                "update request, but no change in $CUSTOMER_REPOSITORY_PATH"
            # TODO
        fi
    fi
            
    update_psa_pull_customer_repository # message to ISMAS

    # no backup necessary as saved in git-repo
    
    # local changed_files=$(changed_file_names)
   
    if [[ -f "$GIT_PULL_TMP" ]]; then 
        # TODO
        if ! check_hardware_compatibility "$files_to_copy" ; then
            local __r=$?
            log_error "$func:${LINENO}: json/ini-files not fit for PSA"
            revert_customer_repository
            exit $__r
        fi
    fi

    if [[ -f "$OPKG_CMDS_TMP" ]]; then
        local commands="$(cat ${OPKG_CMDS_TMP} | tr '\n' '; ')"
        log_info "$func:${LINENO}: executed opkg commands"
        update_psa_install_opkg_packages $UPDATE_ISMAS_PROGRESS \
            $RC_SUCCESS "$commands"
    else
        log_info "$func:${LINENO}: no opkg commands to execute"
        update_psa_install_opkg_packages $UPDATE_ISMAS_PROGRESS \
            $RC_SUCCESS "no opkg commands to execute"
    fi
        
    # check if the opkg-command-file has been changed during 'git pull'
    #if grep -qE ".*opkg_commands.*?" <<< $changed_files; then
    #    # read opkg_cmds: each line respresents an opkg-command
    #    readarray opkg_commands < <(cat $OPKG_CMDS_PSA_FILE)
    #    for opkg_c in "${opkg_commands[@]}"; do
    #        if grep -qE "^\s*[#]+.*$" <<< $opkg_c; then
    #            continue    # found comment line
    #        fi

    #        # package manipulation commands without package:
    #        local cwp="update|upgrade|clean"
    #        # informational commands without package:
    #        cwp="${cwp}|list|list-installed|list-upgradable"

    #        if grep -qE "^.*\s+($cwp)\s+.*$" <<< $opkg_c; then
    #            local p=$(printf '%s' "$opkg_c" | awk '{ print $NF }')
    #            local opkg_output=()
    #            if ! exec_opkg_info "$p" opkg_output; then
    #                log_error "$func:${LINENO}: opkg info $opkg_c failed"
    #                revert_customer_repository ; exit 1
    #            fi

    #            if ! check_md5_for_opkg_packages opkg_output; then
    #                log_error "$func:${LINENO}: "\
    #                    "wrong md5sum for opkg packages"
    #                revert_customer_repository ; exit 1
    #            fi
    #        fi
    #        
    #        # perform a dry-run and check if everything might work as expected. 
    #        if ! exec_opkg_noaction $opkg_c; then
    #                log_error "$func:${LINENO}: "\
    #                    "opkg --noaction $opkg_c failed"
    #        fi

    #        # Actually execute the opkg command
    #        if ! exec_opkg $opkg_c; then
    #            log_error "$func:${LINENO}: exec_opkg $opkg_c failed"
    #            fallback_to_previous_version
    #            revert_customer_repository ; exit 1
    #        fi
    #    done
    #else
    #    log_info "$func:${LINENO}: no opkg commands to execute"
    #    update_psa_install_opkg_packages $UPDATE_ISMAS_PROGRESS \
    #            $RC_SUCCESS "no opkg commands to execute"
    #fi
    
    # Cleanup.
    #if ! cleanup_previous_version; then
    #    log_error "$func:${LINENO}: cleanup_previous_version failed"
    #fi

    # compute version string for current (i.e. new) version
    compute_version

    update_psa_cleanup $UPDATE_ISMAS_PROGRESS \
        $RC_SUCCESS "cleanup after psa update"

    # TODO
    exit 0
}