out

#!/bin/bash

set -e
cd "${1}"
# Colors
RED='\033[1;31m'
NC='\033[0m' # No Color

exec 3>&1
exec 1>&2

# for jq
PATH=/usr/local/bin:$PATH

#
# Get parameters from the pipeline
#
payload=$(mktemp /tmp/resource-in.XXXXXX)
cat > "$payload" <&0

BOT_TOKEN=$(jq -r '(.source.bot_token // "")' < "$payload")
text="$(jq -r '(.params.text // "text is empty")' < "${payload}")"
CHAT_ID="$(jq -r '(.params.chat_id // "")' < "${payload}")"
text_file_path="$(jq -r '(.params.text_file // "")' < "${payload}")"
PARSE_MODE="$(jq -r '(.params.parse_mode // "Markdown")' < "${payload}")"

#
#Select a message, text or text_file. text_file have higher priority.
#
if [ -n "$text_file_path" ]; then
    text=$(cat $text_file_path)
fi

#
# Check mandatory parameters
#
if [ "$PARSE_MODE" != "HTML"  ] && [ "$PARSE_MODE" != "Markdown" ]; then
     printf "\n ${RED} Error! Incorrect parse mode. Please use one of HTML or Markdown in params.parse_mode.${NC}\n"
     exit 1
fi
if [ -z "$BOT_TOKEN" ]; then
     printf "\n ${RED} Error! The Telegram bot token is not specified! Please, add the 'source.bot_token' property to your resource declaration. ${NC}\n"
     exit 1
fi

if [ -z "$CHAT_ID" ]; then
     printf "\n ${RED} Error! The Telegram chat ID is not specified! Please, add the 'params.chat_id' property to your resource parameters. ${NC}\n"
     exit 1
fi

#
# Send the message to the Telegram
#
text=$(echo "$text" | envsubst)
URL="https://api.telegram.org/bot${BOT_TOKEN}/sendMessage"
curl -X POST --data chat_id=${CHAT_ID//\"/} --data text="${text}" --data parse_mode="$PARSE_MODE" "$URL"

#
# print the output
#
timestamp="$(jq -n "{version:{timestamp:\"$(date +%s)\"}}")"
echo "$timestamp" | jq -s add >&3