#!/usr/bin/env bash
set -euo pipefail

DOCKER_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
ROOT_DIR="$(cd "$DOCKER_DIR/.." && pwd)"
ENV_FILE="${ENV_FILE:-$DOCKER_DIR/.env.multisite}"

if [[ ! -f "$ENV_FILE" ]]; then
  echo "Env mancante: $ENV_FILE"
  exit 1
fi

load_env_file() {
  local env_file="$1"
  local line key value

  while IFS= read -r line || [[ -n "$line" ]]; do
    line="${line%$'\r'}"
    [[ -z "$line" || "$line" =~ ^[[:space:]]*# ]] && continue
    [[ "$line" != *=* ]] && continue

    key="${line%%=*}"
    value="${line#*=}"
    export "$key=$value"
  done < "$env_file"
}

load_env_file "$ENV_FILE"

"$ROOT_DIR/scripts/ops/netgescon-prepare-multisite-host-paths.sh" --env-file "$ENV_FILE"

PROD_STORAGE_PATH="${PROD_STORAGE_PATH:-/srv/netgescon/prod/storage}"
PROD_PUBLIC_PATH="${PROD_PUBLIC_PATH:-/srv/netgescon/prod/public}"
DEMO_STORAGE_PATH="${DEMO_STORAGE_PATH:-/srv/netgescon/demo/storage}"
DEMO_PUBLIC_PATH="${DEMO_PUBLIC_PATH:-/srv/netgescon/demo/public}"
BACKUP_DIR="${MULTISITE_BACKUP_PATH:-$ROOT_DIR/storage/backups/multisite}"
mkdir -p "$BACKUP_DIR"

STAMP="$(date +%F_%H%M%S)"
MYSQLDUMP_FLAGS="--single-transaction --skip-lock-tables"

backup_tree() {
  local label="$1"
  local path="$2"

  if [[ ! -d "$path" ]]; then
    echo "Skip $label: path not found ($path)"
    return
  fi

  tar -czf "$BACKUP_DIR/${label}_${STAMP}.tar.gz" -C "$path" .
}

echo "Backup DB produzione..."
docker exec netgescon_prod_db sh -lc "mysqldump $MYSQLDUMP_FLAGS -u root -p\"$PROD_DB_ROOT_PASSWORD\" \"$PROD_DB_DATABASE\"" > "$BACKUP_DIR/prod_${STAMP}.sql"

echo "Backup DB demo..."
docker exec netgescon_demo_db sh -lc "mysqldump $MYSQLDUMP_FLAGS -u root -p\"$DEMO_DB_ROOT_PASSWORD\" \"$DEMO_DB_DATABASE\"" > "$BACKUP_DIR/demo_${STAMP}.sql"

echo "Backup filesystem produzione..."
backup_tree "prod_storage" "$PROD_STORAGE_PATH"
backup_tree "prod_public" "$PROD_PUBLIC_PATH"

echo "Backup filesystem demo..."
backup_tree "demo_storage" "$DEMO_STORAGE_PATH"
backup_tree "demo_public" "$DEMO_PUBLIC_PATH"

cp "$ENV_FILE" "$BACKUP_DIR/.env.multisite.${STAMP}.backup"

echo "Backup completato in: $BACKUP_DIR"