backup

#!/usr/bin/env bash

### Configuration

# Path to the folder which should be saved
BACKUP_PATH="/root"

# Name of the folder which should be saved
BACKUP_FOLDER="testfolder"

# Name of the backup (datum will be added automatically)
BACKUP_NAME="backup-of-testfolder"

# Name of the s3 bucket where the backups will be stored
S3_BUCKET_NAME="my-backup-bucket"

# Path in the s3 bucket where the backups will be stored
S3_BUCKET_PATH="/backups"

# Compression with zip or tar
COMPRESSION="zip"

# Temporary storage
TMP_PATH="/tmp"



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check_if_requirements_are_available()
{
    if ! hash $1 2>/dev/null
    then
        echo "$1 command not found. You have to install $1 first."
        exit 1
    fi
}

case "$1" in
    create|start|backup)
        echo "Create Backup..."
        full_backup_name="$BACKUP_NAME"_"$(date +%Y-%m-%d_%H-%M-%S)"
        cd "$BACKUP_PATH"
        
        if [ $COMPRESSION = "zip" ]; then
            check_if_requirements_are_available zip
            full_backup_name="$full_backup_name".zip
            zip -r "$TMP_PATH/$full_backup_name" "$BACKUP_FOLDER"
        elif [ $COMPRESSION = "tar" ]; then
            check_if_requirements_are_available tar
            full_backup_name="$full_backup_name".tar.gz
            tar cfz "$TMP_PATH/$full_backup_name" "$BACKUP_FOLDER"
        else
            echo "Only zip or tar are valid."
            exit 1
        fi
        
        echo "Upload Backup..."
        s3cmd put "$TMP_PATH/$full_backup_name" "s3://$S3_BUCKET_NAME$S3_BUCKET_PATH/$full_backup_name"

        echo "Clear tmp..."
        rm -f "$TMP_PATH/$full_backup_name"
    ;;

    list)
        s3cmd ls "s3://$S3_BUCKET_NAME$S3_BUCKET_PATH/"
    ;;

    download)
        if [ -n "$2" ]; then
            s3cmd get "s3://$S3_BUCKET_NAME$S3_BUCKET_PATH/${2}"
        else
            echo "Specify a file you want to download."
            echo "Example: ${0} ${1} test.zip"
            echo "Or list your backups with: ${0} list"
        fi
    ;;

    *)
        echo "Use: ${0} {create|list|download}"
        exit 2
    ;;
esac

exit 0