#!/bin/bash

set -x
set -eou pipefail

logdir="$HOME/.logs/wetter"
mkdir -p $logdir
log="$logdir/wetter-$(date +%Y-%m-%d_%H:%M).log"
exec > >(tee -i ${log})  2>&1

# Koordinaten von meinem Zuhause
lat=""
long=""

# API-URLs
base_url="api.open-meteo.com"
api_url="https://${base_url}/v1/forecast/?latitude=${lat}&longitude=${long}&daily=temperature_2m_max&current=temperature_2m&timezone=Europe%2FBerlin&forecast_days=1"

# Telegram
telegram_token=""
CHAT_ID=""

# Error-Handling
handle_error() {
   MESSAGE="Fehler!"
   curl -s -X POST https://api.telegram.org/bot${telegram_token}/sendMessage -d chat_id=${CHAT_ID} -d \
      text="${MESSAGE}" > /dev/null
}

trap handle_error ERR

# Teste Verbindung (10 Versuche)
count=0
while true; do
   if ping -c3 -W3 "${base_url}"; then
      break
   else
      if [[ count -ge 10 ]]; then
         exit 1
      fi
      count=$((count + 1))
      sleep 5
   fi
done

# Hole Temperaturen für heute (10 Versuche)
count=0
while true; do
   if curl --connect-timeout 3 "${api_url}" | jq . > /tmp/todays-forecast.json; then
      break
   else
      if [[ count -ge 10 ]]; then
         exit 1
      fi
      count=$((count + 1))
      sleep 5
   fi
done

max_temp=$(cat /tmp/todays-forecast.json | jq '.daily.temperature_2m_max.[]')
current_temp=$(cat /tmp/todays-forecast.json | jq '.current.temperature_2m')

# Sende Nachricht (Linebreak = %0A)
MESSAGE="Heute werden es höchsten ${max_temp} °C, aktuell sind es ${current_temp} °C."
curl -s -X POST https://api.telegram.org/bot${telegram_token}/sendMessage -d chat_id=${CHAT_ID} -d \
   text="${MESSAGE}" > /dev/null