#!/bin/bash

# Relational pipes

# Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info)

#

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, version 3 of the License.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program. If not, see <http://www.gnu.org/licenses/>.

# This streamlet provides a single attribute: date of given file.

# It calls the stat and date commans.

. "$(dirname "$(realpath "$0")")/streamlet-common.sh"

processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES_METADATA() {

	send OUTPUT_ATTRIBUTE_METADATA "${outputAttributeAliases[0]-date}"    "string"

	send WAITING_FOR_INPUT_ATTRIBUTES

}

processMessage_WAITING_FOR_OUTPUT_ATTRIBUTES() {

	timestamp=$(stat --format="%Y" "$currentFile");

	value=$(date --iso-8601=s --date="@$timestamp");

	send OUTPUT_ATTRIBUTE "$value"    "false";

	send WAITING_FOR_INPUT_ATTRIBUTES;

}

initialize

processMessages