#!/bin/bash
# pm2-self-heal — hourly PM2 process check
# Part of the pm2-self-heal prose contract
# Only sends Zulip DM when action is taken or escalation needed
# Field positions (awk -F'│'): $7=pid $8=uptime $9=restarts $10=status

ZULIP_BOT="abiba-bot@chat.sysloggh.net"
ZULIP_KEY="cKTDMZAPW08dk3zl05sStzO7HRztzyn8"
ZULIP_SITE="https://chat.sysloggh.net"
OWNER_ID=9
LOG="/tmp/pm2-self-heal.log"

send_alert() {
    local subject="$1"
    local body="$2"
    curl -s -X POST "$ZULIP_SITE/api/v1/messages" \
        -u "$ZULIP_BOT:$ZULIP_KEY" \
        -d "type=stream" \
        -d "to=agent-hub" \
        -d "subject=alerts-pm2" \
        -d "content=$subject\n$body" > /dev/null 2>&1
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] Alert sent to #agent-hub > alerts-pm2" >> "$LOG"
}

# Log-only mode: replaced by prose contract pm2-self-heal.prose.md
# Only sends DM on actual failure (status != online), not just high restarts
# This prevents the process from receiving alerts about itself

# Parse PM2 status (--no-color to avoid ANSI escape codes in awk columns)
STATUS=$(pm2 status --no-color 2>/dev/null)

ALERTS=""

# Check abiba-telegram (safe to auto-restart)
TEL_LINE=$(echo "$STATUS" | grep "abiba-telegram")
TEL_STATUS=$(echo "$TEL_LINE" | awk -F'│' '{print $10}' | xargs)
TEL_RESTARTS=$(echo "$TEL_LINE" | awk -F'│' '{print $9}' | xargs)

if [ "$TEL_STATUS" != "online" ]; then
    pm2 restart abiba-telegram > /dev/null 2>&1
    sleep 3
    TEL_LINE2=$(pm2 status --no-color 2>/dev/null | grep "abiba-telegram")
    TEL_STATUS2=$(echo "$TEL_LINE2" | awk -F'│' '{print $10}' | xargs)
    if [ "$TEL_STATUS2" = "online" ]; then
        ALERTS="${ALERTS}⚠️ abiba-telegram was **$TEL_STATUS** → restarted to online\n"
    else
        ALERTS="${ALERTS}🚨 abiba-telegram **failed restart** (was $TEL_STATUS, still $TEL_STATUS2)\n"
    fi
fi

# Check abiba-zulip (read-only — never restart)
ZUL_LINE=$(echo "$STATUS" | grep "abiba-zulip")
ZUL_STATUS=$(echo "$ZUL_LINE" | awk -F'│' '{print $10}' | xargs)
ZUL_RESTARTS=$(echo "$ZUL_LINE" | awk -F'│' '{print $9}' | xargs)

if [ "$ZUL_STATUS" != "online" ]; then
    ALERTS="${ALERTS}🚨 **abiba-zulip is $ZUL_STATUS** — needs investigation!\n"
    ALERTS="${ALERTS}   NOT auto-restarting (runs this contract)\n"
elif [ "$ZUL_RESTARTS" -gt 30 ] 2>/dev/null; then
    ALERTS="${ALERTS}⚠️ abiba-zulip has **$ZUL_RESTARTS restarts** — may need attention\n"
fi

# Log check
echo "[$(date '+%Y-%m-%d %H:%M:%S')] tel=$TEL_STATUS zul=$ZUL_STATUS alerts=${ALERTS:+yes}" >> "$LOG"

# Only DM when there's something to report
if [ -n "$ALERTS" ]; then
    send_alert "**PM2 Self-Heal — $(date '+%H:%M UTC')**" "$ALERTS"
fi