#!/bin/bash
# raspiBackup post extension — notifica Loogle Casa (solo WebApp).
#
# RaspiBackup chiama il post hook PRIMA di STARTSERVICES: su Pi2 Casa è giù
# (before-stop ferma loogle-casa, STOPSERVICES ferma docker). Non notificare
# subito: systemd-run stacca dal cgroup e riprova finché l'API risponde.
#
# Sourced da raspiBackup: $1 = return code backup.
# Eseguito da systemd-run: $1 = --wait-send

LOOGLE_NOTIFY="/home/daniely/docker/loogle-casa/scripts/loogle-notify.sh"
MAX_TRIES="${LOOGLE_BACKUP_NOTIFY_TRIES:-36}"
SLEEP_SECS="${LOOGLE_BACKUP_NOTIFY_SLEEP:-5}"

wait_send() {
    local title="$1" body="$2" severity="$3" tag="$4"
    local i
    if [[ ! -x "$LOOGLE_NOTIFY" ]]; then
        echo "loogle-notify.sh assente" >&2
        exit 0
    fi
    for ((i = 1; i <= MAX_TRIES; i++)); do
        if "$LOOGLE_NOTIFY" --title "$title" --body "$body" --category raspi_backup \
            --severity "$severity" --tag "$tag"; then
            echo "notify ok try=$i tag=$tag"
            exit 0
        fi
        echo "notify retry $i/$MAX_TRIES tag=$tag" >&2
        sleep "$SLEEP_SECS"
    done
    echo "notify failed after ${MAX_TRIES} tries tag=$tag" >&2
    exit 1
}

if [[ "${1:-}" == "--wait-send" ]]; then
    wait_send "${2:-}" "${3:-}" "${4:-info}" "${5:-raspi_backup}"
    exit $?
fi

RC="${1:-1}"
HOST="${HOSTNAME:-$(hostname)}"
HOST="${HOST%%.*}"

if [[ ! -x "$LOOGLE_NOTIFY" ]]; then
    return 0 2>/dev/null || exit 0
fi

if (( RC == 0 )); then
    TITLE="Backup completato"
    BODY="Backup di ${HOST} terminato con successo."
    SEVERITY="info"
else
    TITLE="Backup fallito"
    BODY="Backup di ${HOST} fallito (codice ${RC})."
    SEVERITY="error"
fi

TAG="raspi_backup-${HOST}"
SELF="$(readlink -f "${BASH_SOURCE[0]:-$0}" 2>/dev/null || echo /usr/local/bin/raspiBackup_loogle_post.sh)"

# Stacca dal servizio raspiBackup (KillMode=control-group) e aspetta Casa.
if command -v systemd-run >/dev/null 2>&1; then
    systemd-run --quiet --collect \
        --description="Loogle Casa raspiBackup notify ${HOST}" \
        /bin/bash "$SELF" --wait-send "$TITLE" "$BODY" "$SEVERITY" "$TAG" \
        || true
else
    nohup /bin/bash "$SELF" --wait-send "$TITLE" "$BODY" "$SEVERITY" "$TAG" \
        >/dev/null 2>&1 &
    disown 2>/dev/null || true
fi

return 0 2>/dev/null || exit 0