#!/bin/bash
# Script de sauvegarde des données critiques LeCoffre Node
# Sauvegarde Bitcoin, BlindBit, SDK Storage et SDK Signer

set -e

# Couleurs pour l'affichage
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

BACKUP_DIR="./backups"
TIMESTAMP=$(date +%Y%m%d_%H%M%S)
BACKUP_NAME="lecoffre_backup_${TIMESTAMP}"
HOST_UID=$(id -u)
HOST_GID=$(id -g)

echo -e "${BLUE}========================================${NC}"
echo -e "${BLUE}  LeCoffre Node - Data Backup${NC}"
echo -e "${BLUE}========================================${NC}"
echo

# Créer le répertoire de sauvegarde
mkdir -p "$BACKUP_DIR"

echo -e "${YELLOW}Creating backup: $BACKUP_NAME${NC}"

# Fonction pour sauvegarder un volume Docker
backup_volume() {
    local volume_name=$1
    local backup_path=$2
    local description=$3

    echo -e "${BLUE}Backing up $description...${NC}"

    if docker volume inspect "$volume_name" >/dev/null 2>&1; then
        docker run --rm \
            -e HOST_UID="$HOST_UID" -e HOST_GID="$HOST_GID" \
            -v "$volume_name":/source:ro \
            -v "$(pwd)/$BACKUP_DIR/$BACKUP_NAME":/backup \
            alpine:latest \
            sh -c "mkdir -p /backup$backup_path && cp -r /source/* /backup$backup_path/ 2>/dev/null || true && chmod -R 755 /backup$backup_path 2>/dev/null || true && chown -R \$HOST_UID:\$HOST_GID /backup$backup_path 2>/dev/null || true"
        echo -e "${GREEN}✓ $description backed up${NC}"
    else
        echo -e "${YELLOW}⚠ Volume $volume_name not found${NC}"
    fi
}

# Créer le répertoire de sauvegarde
mkdir -p "$BACKUP_DIR/$BACKUP_NAME"

# Sauvegarder les volumes critiques
backup_volume "4nk_node_bitcoin_data" "/bitcoin" "Bitcoin Signet Data"
backup_volume "4nk_node_blindbit_data" "/blindbit" "BlindBit Oracle Data"
backup_volume "4nk_node_sdk_data" "/sdk" "SDK Relay Data"
backup_volume "4nk_node_sdk_storage_data" "/sdk_storage" "SDK Storage Data"
backup_volume "4nk_node_grafana_data" "/grafana" "Grafana Data"
backup_volume "4nk_node_loki_data" "/loki" "Loki Data"

# Créer une archive compressée
echo -e "${BLUE}Creating compressed archive...${NC}"
cd "$BACKUP_DIR"
tar -czf "${BACKUP_NAME}.tar.gz" "$BACKUP_NAME" --ignore-failed-read 2>/dev/null || true
rm -rf "$BACKUP_NAME" || sudo rm -rf "$BACKUP_NAME" || true
cd ..

# Afficher les informations de sauvegarde
BACKUP_SIZE=$(du -h "$BACKUP_DIR/${BACKUP_NAME}.tar.gz" | cut -f1)
echo
echo -e "${GREEN}✅ Backup completed successfully!${NC}"
echo -e "${GREEN}Backup file: $BACKUP_DIR/${BACKUP_NAME}.tar.gz${NC}"
echo -e "${GREEN}Backup size: $BACKUP_SIZE${NC}"
echo
echo -e "${BLUE}To restore this backup:${NC}"
echo -e "${YELLOW}  ./scripts/restore-data.sh $BACKUP_NAME${NC}"
echo