#!/bin/sh
# Usage: mk8-watchdog.sh <profile> <interval> <fail_after> <healthy_after> [max_ticks]
# Exits quietly after max_ticks healthy ticks so sentinels cannot accumulate.
PROFILE="$1"; IV="${2:-5}"; FA="${3:-6}"; HA="${4:-6}"; MT="${5:-120}"
DIR="/root/payloads/user/remote_access/pager-webui"
[ -f "$DIR/server.py" ] || DIR="/mmc/mk8/releases/current"
fails=0; oks=0; tripped=0; ticks=0
probe() {
    curl -fsS -m 3 http://127.0.0.1:8080/ >/dev/null 2>&1 &&
    { ip link show wlan0mon >/dev/null 2>&1 ||
      ip link show wlan1mon >/dev/null 2>&1; }
}
while true; do
    if probe; then
        fails=0
        ticks=$((ticks + 1))
        if [ "$tripped" = "0" ] && [ "$ticks" -ge "$MT" ]; then
            exit 0
        fi
        if [ "$tripped" = "1" ]; then
            oks=$((oks + 1))
            if [ "$oks" -ge "$HA" ]; then
                /usr/bin/python3 "$DIR/server.py" --promote-snapshot "$PROFILE" >/dev/null 2>&1
                exit 0
            fi
        fi
    else
        fails=$((fails + 1)); oks=0
        if [ "$tripped" = "0" ] && [ "$fails" -ge "$FA" ]; then
            tripped=1
            /usr/bin/python3 "$DIR/server.py" --rollback-snapshot "$PROFILE" >/dev/null 2>&1
        fi
    fi
    sleep "$IV"
done