bin: add process_batch for processing updates from file

bin/process_batch.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+# shellcheck disable=SC1090,SC2034,SC2059
+#===============================================================================
+#
+#          FILE: bin/process_batch.sh
+#
+USAGE='process_update.sh [-h|--help] -w|--watch [-n|--lines n] [file] [debug]'
+# 
+#   DESCRIPTION: processes last 10 telegram updates in file, one update per line
+#                 
+#                -w --watch watch for new updates added to file
+#                -n --lines read only last "n" lines
+#                file   to read updates from 
+#			empty means read from webhook pipe
+#                
+#                -h - display short help
+#                --help -  this help
+#
+#	LICENSE: WTFPLv2 http://www.wtfpl.net/txt/copying/
+#        AUTHOR: KayM (gnadelwartz), kay@rrr.de
+#       CREATED: 27.02.2021 13:14
+#
+#### $$VERSION$$ v1.45-dev-52-g84ff8ce
+#===============================================================================
+
+####
+# parse args
+COMMAND="process_multi_updates"
+lines="-n 10"
+
+case "$1" in
+	"-f"|"--follow")
+		follow="-f"
+		shift
+		;;
+	"-n"|"--lines")
+		lines="-n $2"
+		shift 2
+		;;
+esac
+
+# set bashbot environment
+source "${0%/*}/bashbot_env.inc.sh" "debug" # debug
+print_help "${1:-nix}"
+
+
+# empty file is webhook
+file="${WEBHOOK}"
+[ -n "$1" ] && file="$1"
+
+if [[ ! -r "${file}" || -d "${file}" ]]; then
+	printf "%b\n" "File ${GREY}${file}${NC} is not readable or is a directory."
+	exit 1
+fi
+
+####
+# ready, do stuff here -----
+trap 'kill $(jobs -p) 2>/dev/null' EXIT HUP QUIT
+
+# shellcheck disable=SC2086,SC2248
+tail ${follow} ${lines} "${file}" |\
+    while IFS="" read -r input
+    do 
+	# read json from stdin and convert update format
+	json='{"result": ['"${input}"']}'
+	UPDATE="$(${JSONSHFILE} -b -n <<<"${json}" 2>/dev/null)"
+
+	# process telegram update
+	"${COMMAND}" "$1"
+    done