#!/bin/bash

# --- НАСТРОЙКИ ---
SERVER="root@192.168.1.87"
REMOTE_PATH="/root/magistr/program"
# -----------------

echo "📡 Connecting to remote server ($SERVER)..."

# 1. Запускаем fetch прямо на сервере
# Флаг -o BatchMode=yes запрещает спрашивать пароль (чтобы скрипт не завис)
ssh -o BatchMode=yes -o ConnectTimeout=10 "$SERVER" "cd $REMOTE_PATH && git fetch origin"

if [ $? -ne 0 ]; then
    echo "❌ Connection failed."
    echo "Make sure SSH keys are set up and the server is reachable."
    exit 1
fi

# 2. Проверяем количество новых коммитов (HEAD..@{u})
BEHIND_COUNT=$(ssh "$SERVER" "cd $REMOTE_PATH && git rev-list --count HEAD..@{u} 2>/dev/null")

# Если переменная пустая — значит ошибка в гите
if [ -z "$BEHIND_COUNT" ]; then
    echo "⚠️  Git status unknown. Upstream branch might not be set."
    exit 1
fi

# 3. Логика обновления
if [ "$BEHIND_COUNT" -gt 0 ]; then
    echo "⬇️ Found $BEHIND_COUNT new commit(s). Pulling on server..."
    
    # Выполняем git pull на сервере
    ssh "$SERVER" "cd $REMOTE_PATH && git pull"
    
    if [ $? -eq 0 ]; then
        echo "✅ Server successfully updated!"
    else
        echo "❌ Update failed (merge conflicts?)."
    fi
else
    echo "✨ Server is already up to date."
fi