#!/bin/bash
# Скрипт для деплоя из GitHub Actions
# Используется на сервере для безопасного обновления

set -e

PROJECT_DIR="/home/prod"
BACKUP_DIR="/home/prod/backups"
LOG_FILE="/home/prod/logs/deploy.log"

# Создаем директории если их нет
mkdir -p "$BACKUP_DIR"
mkdir -p "$(dirname "$LOG_FILE")"

# Функция логирования
log() {
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" | tee -a "$LOG_FILE"
}

log "🚀 Starting deployment..."

# Переходим в директорию проекта
cd "$PROJECT_DIR" || exit 1

# Сохраняем текущий коммит
CURRENT_COMMIT=$(git rev-parse HEAD)
log "Current commit: $CURRENT_COMMIT"

# Создаем backup конфигурации перед обновлением
log "💾 Creating backup..."
BACKUP_FILE="$BACKUP_DIR/backup-$(date +%Y%m%d-%H%M%S).tar.gz"
tar -czf "$BACKUP_FILE" \
    infra/prometheus/prometheus.yml \
    infra/grafana/provisioning/ \
    docker-compose.yml \
    2>/dev/null || true
log "Backup created: $BACKUP_FILE"

# Обновляем код
log "📥 Pulling latest changes..."
git fetch origin main
git reset --hard origin/main

# Проверяем изменения
NEW_COMMIT=$(git rev-parse HEAD)
if [ "$CURRENT_COMMIT" = "$NEW_COMMIT" ]; then
    log "ℹ️  No new changes to deploy"
    exit 0
fi

log "✅ Code updated: $CURRENT_COMMIT → $NEW_COMMIT"

# Проверяем синтаксис docker-compose
log "🔍 Validating docker-compose.yml..."
if ! docker-compose config > /dev/null 2>&1; then
    log "❌ docker-compose.yml validation failed!"
    log "🔄 Rolling back..."
    git reset --hard "$CURRENT_COMMIT"
    exit 1
fi

# Перезапускаем сервисы
log "🔄 Restarting services..."
if command -v make &> /dev/null; then
    make restart
else
    docker-compose down
    docker-compose up -d --build
fi

# Ждем запуска сервисов
log "⏳ Waiting for services to start..."
sleep 20

# Health checks
log "🏥 Running health checks..."

HEALTH_CHECK_FAILED=0

# Prometheus
if curl -f http://localhost:9090/-/healthy > /dev/null 2>&1; then
    log "✅ Prometheus is healthy"
else
    log "❌ Prometheus health check failed"
    HEALTH_CHECK_FAILED=1
fi

# Grafana
if curl -f http://localhost:3000/api/health > /dev/null 2>&1; then
    log "✅ Grafana is healthy"
else
    log "❌ Grafana health check failed"
    HEALTH_CHECK_FAILED=1
fi

# Если health check не прошел, откатываемся
if [ $HEALTH_CHECK_FAILED -eq 1 ]; then
    log "❌ Health checks failed! Rolling back..."
    git reset --hard "$CURRENT_COMMIT"
    make restart || docker-compose restart
    log "🔄 Rollback completed"
    exit 1
fi

log "✅ Deployment completed successfully!"
log "📊 Container status:"
docker-compose ps || docker ps --filter "name=bots_"

exit 0