gdlink_api

#!/bin/bash

if [ $# -eq 0 ]; then
    echo "No parameters."
    exit 0
fi

if [ $# -gt 2 ]; then
    echo "Too many parameters."
    exit 0
fi

gd_file_url="$1"
gd_file_id_num='24,48'
gd_api_key=''
Row="$(grep -n "^gd_api_key=" "$0" | awk -F ":" '{print $1}')"
DOCID="$(echo "${gd_file_url}" | grep -o '[0-9a-zA-Z\_\-]\{'${gd_file_id_num}'\}')"

if [[ $# -eq 1 && -z ${gd_api_key} ]]; then
    read -p "Please input your Google Drive API key: " gd_api_key
    read -p "Do you want to save the Google Drive API key? [Y/N]: " answer
    case "${answer}" in
    Y | y)
        sed -i "${Row}c gd_api_key='${gd_api_key}'" "$0"
        echo "Saved."
        ;;
    N | n)
        echo "Not saved."
        ;;
    *)
        echo "Error choice."
        ;;
    esac
fi

if [ $# -eq 2 ]; then
    if [ -z ${gd_api_key} ]; then
        gd_api_key="$2"
        read -p "Do you want to save the Google API key? [Y/N]: " answer
        case "${answer}" in
        Y | y)
            sed -i "${Row}c gd_api_key='${gd_api_key}'" "$0"
            echo "Saved."
            ;;
        N | n)
            echo "Not saved."
            ;;
        *)
            echo "Error choice."
            ;;
        esac
    else
        echo -e \
            "Google Drive API key already exists, please select an action to perform.\n1) Use, save and replace.\n2) Use only, don't save.\n3) Don't use."
        read -p "1/2/3> " answer
        case "${answer}" in
        1)
            echo "Used, saved and replaced."
            ;;
        2)
            sed -i "${Row}c gd_api_key='${gd_api_key}'" "$0"
            echo "Used only, not saved."
            ;;
        3)
            echo "Not used."
            ;;
        *)
            echo "Error choice."
            ;;
        esac
    fi
fi

echo -e "Your Google Drive sharing file direct link is:\nhttps://www.googleapis.com/drive/v3/files/${DOCID}?alt=media&key=${gd_api_key}"