matrix-notification-resource/bin/out

#!/bin/bash

# Send message to a matrix room. API call looks like this:
# curl -XPOST -d '{"msgtype":"m.text", "body":"hello"}' "http://matrix.org/_matrix/client/api/v1/rooms/%21CvcvRuDYDzTOzfKKgh%3Alocalhost/send/m.room.message?access_token=YOUR_ACCESS_TOKEN"


set -e

cd "${1}"

exec 3>&1
exec 1>&2

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

payload=$(mktemp /tmp/resource-in.XXXXXX)

cat > "${payload}" <&0

matrix_server_url="$(jq -r '.source.matrix_server_url' < "${payload}")"
token="$(jq -r '.source.token' < "${payload}")"
room_id="$(jq -r '.source.room_id' < "${payload}")"

ts="$(date +%s)"

matrix_endpoint="$matrix_server_url/_matrix/client/r0/rooms/$room_id/send/m.room.message/$ts?access_token=$token"

text_file="$(jq -r '.params.text_file // ""' < "${payload}")"
from="$(jq -r '.params.from // ""' < "${payload}")"
text="$(jq '(.params.text // "${TEXT_FILE_CONTENT}")' < "${payload}")"
msgtype="$(jq '(.params.msgtype // "m.notice")' < "${payload}")"

always_notify="$(jq -r '.params.always_notify // "true"' < "${payload}")"
debug="$(jq -r '.params.debug // "false"' < "${payload}")"
silent="$(jq -r '.params.silent // "false"' < "${payload}")"

TEXT_FILE_CONTENT=""
[[ -n "${text_file}" && -f "${text_file}" ]] && TEXT_FILE_CONTENT="$(cat "${text_file}")"

if [[ "$always_notify" == "true" || -n "$TEXT_FILE_CONTENT" || -z "$text_file" ]]
then
  TEXT_FILE_CONTENT="${TEXT_FILE_CONTENT:-_(no notification provided)_}"

  text="$(eval printf ${text} )"
  [[ -z "${text}" ]] && text="_(missing notification text)_"
  text="$(echo "${text}" | jq -R -s .)"

  [[ "${token}"   != "null" ]] && username="$(eval "printf ${token}" | jq -R -s .)"
  [[ "${room_id}"    != "null" ]] && room_id="$(eval "printf ${room_id}" | jq -R -s .)"
  body="$(cat <<EOF
{
  "msgtype": ${msgtype},
  "body": ${text}
}
EOF
  )"

  compact_body="$(echo "${body}" | jq -c '.')"

  if [[ "$debug" == "true" ]]
  then
    json="$(cat <<EOF
{
  "matrix_endpoint": "${matrix_endpoint}",
  "body": ${body}
}
EOF
)"
    echo "$json" | jq -c '.'
    exit 0
  elif [[ "$silent" == "true" ]]
  then
    echo "Using silent output"
    curl -s -X PUT --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{compact_body}' "${matrix_endpoint}"
  else
    curl -v -X PUT --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{compact_body}' "${matrix_endpoint}"
  fi
fi

jq -n "{version:{timestamp:\"$(date +%s)\"}}" >&3