#!/bin/bash

# Exit on error
set -e

# Validate input parameters
if [ "$#" -ne 2 ]; then
    echo "Usage: $0 <RESTIC_PASSWORD> <CUSTOM_TAG>"
    exit 1
fi

# Assign arguments to variables
RESTIC_PASSWORD="$1"
CUSTOM_TAG="$2"

# Configuration
APP_PATH='/var/www/webroot/ROOT'
backupPath='/mnt/backups'
password_file="/etc/restic-password"
LOG_DIR="/home/jelastic/mb-backups/logs/manual/media"
LOG_FILE="${LOG_DIR}/backup_media_$(date +'%Y-%m-%d').log"
includePaths=("$APP_PATH/wp-content/uploads")

# Ensure log directory exists
mkdir -p "$LOG_DIR"

# Set Restic environment variables
export RESTIC_REPOSITORY="$backupPath"
export RESTIC_PASSWORD

# Start logging
echo "[$(date +'%Y-%m-%d %H:%M:%S')] Starting Media Backup with tags: media_themes, $CUSTOM_TAG" | tee -a "$LOG_FILE"

# Verify password file exists
if [ ! -f "$password_file" ]; then
    echo "ERROR: Password file not found at $password_file" | tee -a "$LOG_FILE"
    exit 1
fi

# Verify repository access
if ! restic snapshots > /dev/null 2>&1; then
    echo "ERROR: Unable to access the restic repository. Aborting backup." | tee -a "$LOG_FILE"
    exit 1
fi

# Perform the backup
for path in "${includePaths[@]}"; do
    if restic backup "$path" \
        --tag media_themes \
        --tag "$CUSTOM_TAG" \
        --force \
        --option b2.connections=4; then
        echo "[$(date +'%Y-%m-%d %H:%M:%S')] Backup completed successfully for $path with tags: media_themes, $CUSTOM_TAG." | tee -a "$LOG_FILE"
    else
        echo "[$(date +'%Y-%m-%d %H:%M:%S')] ERROR: Backup failed for $path." | tee -a "$LOG_FILE"
        exit 1
    fi
done

# End logging
echo "[$(date +'%Y-%m-%d %H:%M:%S')] Media Backup process finished." | tee -a "$LOG_FILE"