#!/bin/bash

set -e  # Exit on error
trap 'echo "ERROR: An error occurred. Exiting."' ERR

# Validate arguments
if [ $# -lt 2 ]; then
    echo "Usage: $0 <ENV_NAME> {backup|backup_wp_core|backup_uploads|backup_database|check_backup_repo|rotate_snapshots|create_snapshot|update_restic}"
    exit 1
fi

# Extract ENV_NAME and COMMAND
ENV_NAME="$1"
COMMAND="$2"

# Set dynamic configurations based on ENV_NAME
LOG_FILE="/var/log/${ENV_NAME}_backup_script.log"
BACKUP_REPO_PATH="/mnt/backups/${ENV_NAME}"
PASSWORD_FILE="/etc/restic-password"

# Validate ENV_NAME
if [ -z "$ENV_NAME" ]; then
    echo "Error: ENV_NAME is not provided or empty."
    exit 1
fi

# Ensure dynamic paths exist
mkdir -p "$BACKUP_REPO_PATH"

# Set environment variables
export RESTIC_REPOSITORY="$BACKUP_REPO_PATH"
export RESTIC_PASSWORD=$(cat "$PASSWORD_FILE")

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

# Commands
case "$COMMAND" in
    backup)
        log_message "Starting full backup for environment: $ENV_NAME"
        # Add logic to perform the full backup
        ;;
    backup_wp_core)
        log_message "Backing up WordPress core files for environment: $ENV_NAME"
        # Add logic for WordPress core backup
        ;;
    backup_uploads)
        log_message "Backing up WordPress uploads for environment: $ENV_NAME"
        # Add logic for uploads backup
        ;;
    backup_database)
        log_message "Backing up WordPress database for environment: $ENV_NAME"
        # Add logic for database backup
        ;;
    check_backup_repo)
        log_message "Checking backup repository for environment: $ENV_NAME"
        # Add repository check logic
        ;;
    rotate_snapshots)
        log_message "Rotating snapshots for environment: $ENV_NAME"
        # Add snapshot rotation logic
        ;;
    create_snapshot)
        log_message "Creating snapshot for environment: $ENV_NAME"
        # Add snapshot creation logic
        ;;
    update_restic)
        log_message "Updating Restic for environment: $ENV_NAME"
        restic self-update
        ;;
    *)
        echo "Invalid command: $COMMAND"
        echo "Usage: $0 <ENV_NAME> {backup|backup_wp_core|backup_uploads|backup_database|check_backup_repo|rotate_snapshots|create_snapshot|update_restic}"
        exit 1
        ;;
esac