# Simple script to send messages via mattermost.
# You can e.g. use this with nix to get your zed reports like this
#
#   zfs.zed.settings = {
#     ZED_DEBUG_LOG = "/tmp/zed.debug.log";
#     ZED_EMAIL_ADDR = [ "root" ];
#     ZED_EMAIL_PROG = "${pkgs.send-mmsg}/bin/send-mmsg"; # or use lib.getExe
#     ZED_EMAIL_OPTS = "-";
#
#     ZED_NOTIFY_INTERVAL_SECS = 3600;
#     ZED_NOTIFY_VERBOSE = true;
#
#     ZED_SCRUB_AFTER_RESILVER = true;
#   };
#   zfs.zed.enableMail = false;
#

# Default hook ID if none is provided
DEFAULT_HOOK_ID="xxxxxxxxxxxxxxxxxxxxxxxxx"

# Ensure message text is provided
if [ -z "$1" ]; then
  echo "Usage: $0 <message> [hook_id]"
  exit 1
fi

HOSTNAME=''$(${pkgs.nettools}/bin/hostname)

# Extract arguments
MESSAGE=$1
HOOK_ID=''${2:-$DEFAULT_HOOK_ID}

# Read message from stdin if not provided
if [ "$1" == "-" ]; then
  MESSAGE=$(cat)
fi

# Escape special characters in the message text for JSON
ESCAPED_MESSAGE=$(echo "$MESSAGE" | sed 's/\\/\\\\/g; s/\"/\\\"/g')

# Send the message using curl
curl -i -X POST -H 'Content-Type: application/json' \
     -d "{\"username\": \"$HOSTNAME\", \"text\": \"$ESCAPED_MESSAGE\"}" \
     "https://YOUR-SERVER-ADDR/hooks/$HOOK_ID"