#!/bin/bash
# monitor.sh

TARGET="mithal.space"
URL="https://$TARGET"
SEARCH_URL="$URL/?q=test" # Adjust query parameter based on the actual search endpoint
if [ -d "/usr/share/nginx/html" ]; then
    DATA_FILE="/usr/share/nginx/html/data.csv"
else
    DATA_FILE="./data.csv"
fi


# Initialize CSV with headers if it doesn't exist
if [ ! -f "$DATA_FILE" ]; then
    echo "timestamp,status,latency,ssl_days,dns_time,search_time" > "$DATA_FILE"
fi

TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")

# 1. Uptime, Latency, and DNS Resolution
HTTP_RESPONSE=$(curl -o /dev/null -s -w "%{http_code},%{time_total},%{time_namelookup}" "$URL")
STATUS=$(echo "$HTTP_RESPONSE" | cut -d',' -f1)
LATENCY=$(echo "$HTTP_RESPONSE" | cut -d',' -f2)
DNS_TIME=$(echo "$HTTP_RESPONSE" | cut -d',' -f3)

# 2. Search Response Time
SEARCH_TIME=$(curl -o /dev/null -s -w "%{time_total}" "$SEARCH_URL")

# 3. SSL Expiration
EXP_DATE=$(echo | openssl s_client -servername "$TARGET" -connect "$TARGET:443" 2>/dev/null | openssl x509 -noout -enddate | cut -d= -f2)
if [ -n "$EXP_DATE" ]; then
    EXP_EPOCH=$(date -d "$EXP_DATE" +%s)
    CURRENT_EPOCH=$(date +%s)
    SSL_DAYS=$(( (EXP_EPOCH - CURRENT_EPOCH) / 86400 ))
else
    SSL_DAYS=0
fi

# Append to CSV
echo "$TIMESTAMP,$STATUS,$LATENCY,$SSL_DAYS,$DNS_TIME,$SEARCH_TIME" >> "$DATA_FILE"