mega-dl

#!/bin/bash
# Formats mega links for download or obfuscation

function help {
    script=$(basename "$0")
    echo "Help:"
    echo ${script}" 'link'     # download mega link"
    echo ${script}" -b 'link'  # open mega link in browser"
    echo ${script}" -d 'link'  # print mega link without downloading"
    echo ${script}" -o 'link'  # prints an obfuscated mega link"
    echo ${script}" -h         # displays the help menu"
}

dl=true
useTools=true
hideLink=false
case "$1" in
    -h|--h|-help|--help )
        help
        exit 0
        ;;
    -d|--d|-D|--D )
        link="$2"
        dl=false
        ;;
    -b|--b|-B|--B )
        link="$2"
        useTools=false
        ;;
    -o|--o|-O|--O )
        link="$2"
        hideLink=true
        ;;
    -* )
        echo "Invalid argument: '$1'"
        help
        exit 0
        ;;
    * ) link="$1";;
esac

if [[ -z "${link}" ]]; then
    echo "No links entered."
    exit 0
fi

link=$(echo "$link" | tr -d '\r\n[:space:]' ) # remove any newline or whitespace characters
link="${link##*:}"        # extract the link from mega:   links
link="${link##*/}"        # extract the link from mega.nz links
link='#!'${link//'%'/'!'} # ensure special characters are present and properly formatted
link=${link//'!#'/''}     # remove any extraneous characters
link=${link//'!!'/'!'}    # remove any extraneous characters

if [ "${hideLink}" = true ]; then
    link=$(echo "$link" | sed "s/!/\n%/g" | tail -n2)
    echo "#${link}"
    exit 0
fi

link="https://mega.nz/${link}"

if [ "${dl}" = true ]; then
    if [ "${useTools}" = true ]; then
        if [[ -z "$(which megadl)" ]]; then
            echo "'megadl' not found."
            read -p "Would you like to open the link in your default browser (y/n)? " choice
            case "$choice" in
                y|Y|yes|Yes ) xdg-open "${link}";;
                * ) echo "Please install megatools.";;
            esac
        else
            megadl "${link}"
        fi
    else
        xdg-open "${link}"
    fi
else
    echo "${link}"
fi