#!/bin/bash
# notify.sh — send a notification via ntfy, email, and/or Mattermost.
#
# Usage:  notify.sh "Title" "Body message"
#
# Reads notify_config.txt from the same directory as this script.
# All methods are independently enabled/disabled in the config.
# Exits 0 even if all methods fail (notifications are best-effort).

set -euo pipefail

SCRIPT_DIR="$(dirname "$(realpath "$0")")"
CONFIG="$SCRIPT_DIR/notify_config.txt"

TITLE="${1:-Sky-Cam notification}"
BODY="${2:-}"

# ── Load config ───────────────────────────────────────────────────────────────
if [ ! -f "$CONFIG" ]; then
    echo "notify.sh: config not found at $CONFIG — skipping notifications" >&2
    exit 0
fi

# Source only the known keys; ignore comments and blank lines.
eval "$(grep -E '^[A-Z_]+=.*' "$CONFIG" | grep -v '^#')"

NTFY_ENABLED="${NTFY_ENABLED:-false}"
NTFY_URL="${NTFY_URL:-}"

EMAIL_ENABLED="${EMAIL_ENABLED:-false}"
EMAIL_TO="${EMAIL_TO:-}"
EMAIL_FROM="${EMAIL_FROM:-skycam@localhost}"

MM_NOTIFY_ENABLED="${MM_NOTIFY_ENABLED:-false}"
MM_NOTIFY_CHANNEL_ID="${MM_NOTIFY_CHANNEL_ID:-}"

# ── ntfy ─────────────────────────────────────────────────────────────────────
if [ "$NTFY_ENABLED" = "true" ] && [ -n "$NTFY_URL" ]; then
    curl -s \
        -H "Title: $TITLE" \
        -d "$BODY" \
        "$NTFY_URL" > /dev/null \
        && echo "notify: ntfy sent" \
        || echo "notify: ntfy failed" >&2
fi

# ── Email ─────────────────────────────────────────────────────────────────────
if [ "$EMAIL_ENABLED" = "true" ] && [ -n "$EMAIL_TO" ]; then
    echo "$BODY" | mail -s "$TITLE" -r "$EMAIL_FROM" "$EMAIL_TO" \
        && echo "notify: email sent to $EMAIL_TO" \
        || echo "notify: email failed" >&2
fi

# ── Mattermost text post ──────────────────────────────────────────────────────
# Uses the same mattermost_config.txt as sunrise2mm.py but posts to
# MM_NOTIFY_CHANNEL_ID (can be the same channel or a private admin channel).
if [ "$MM_NOTIFY_ENABLED" = "true" ] && [ -n "$MM_NOTIFY_CHANNEL_ID" ]; then
    MM_CONFIG="/home/motion/drives/local-2tb/sunrise-scripts/mattermost_config.txt"
    [ ! -f "$MM_CONFIG" ] && MM_CONFIG="$SCRIPT_DIR/mattermost_config.txt"
    if [ -f "$MM_CONFIG" ]; then
        eval "$(grep -E '^(mattermost_url|access_token)=' "$MM_CONFIG")"
        curl -s \
            -H "Authorization: Bearer $access_token" \
            -H "Content-Type: application/json" \
            -d "{\"channel_id\":\"$MM_NOTIFY_CHANNEL_ID\",\"message\":\"**$TITLE**\n$BODY\"}" \
            "${mattermost_url}/api/v4/posts" > /dev/null \
            && echo "notify: mattermost sent" \
            || echo "notify: mattermost failed" >&2
    else
        echo "notify: mattermost_config.txt not found — skipping MM notify" >&2
    fi
fi

exit 0