Sonarr custom notification script for Mattermost incoming webhook

sonarr-mattermost-notify.sh

#!/bin/bash

# --- CONFIGURATION ---
# Webhook documentation in https://developers.mattermost.com/integrate/webhooks/incoming/
WEBHOOK_URL="https://mm.example.com/hooks/secretkey"
CHANNEL="shows"
USERNAME="Sonarr"
ICON_URL="https://raw.githubusercontent.com/Sonarr/Sonarr/develop/Logo/256.png"

# Check if script is run by Sonarr
if [ -z "$sonarr_eventtype" ]; then
    echo "Error: This script must be run from within Sonarr."
    exit 1
fi

EVENT="$sonarr_eventtype"
SERIES_TITLE="$sonarr_series_title"

# Formatting helpers
SEASON=$(printf "%02d" "$sonarr_episodefile_seasonnumber")
EPISODE=$(printf "%02d" "$sonarr_episodefile_episodenumbers")

# Event types: https://wiki.servarr.com/sonarr/custom-scripts
case "$EVENT" in
    "Grab")
        HEADER="### 📥 Show Grabbed"
        BODY="**$SERIES_TITLE** - ${sonarr_release_title}\n**Size**: $((sonarr_release_size / 1024 / 1024)) MB"
        ;;
    "Download")
        HEADER="### ✅ Show Imported"
        BODY="**$SERIES_TITLE** - S${SEASON}E${EPISODE} - $sonarr_episodefile_episodetitles\n**Quality**: $sonarr_episodefile_quality\n**Path**: $sonarr_episodefile_relativepath"
        ;;
    "EpisodeFileDelete")
        HEADER="### 🗑️ Episode Deleted"
        BODY="**$SERIES_TITLE** - S${SEASON}E${EPISODE}\n**Reason**: File removed or upgraded."
        ;;
    "ManualInteractionRequired")
        HEADER="### ⚠️ Manual Interaction Required"
        BODY="**$SERIES_TITLE** requires your attention.\n**Issue**: Sonarr was unable to complete the import automatically.\n**Path**: $sonarr_episodefile_path"
        ;;
    "Test")
        HEADER="### 🔔 Test Notification"
        BODY="Webhook connection to **$CHANNEL** is successful for $USERNAME!"
        ;;
    *)
        HEADER="### ℹ️ $USERNAME Notification"
        BODY="Event **$EVENT** triggered for **$SERIES_TITLE**."
        ;;
esac

PAYLOAD=$(cat <<EOF
{
  "channel": "$CHANNEL",
  "username": "$USERNAME",
  "icon_url": "$ICON_URL",
  "text": "$HEADER\n$BODY"
}
EOF
)

curl -s -i -X POST \
     -H 'Content-Type: application/json' \
     -d "$PAYLOAD" \
     "$WEBHOOK_URL" > /dev/null