[aliyundrive-webdav](https://github.com/messense/aliyundrive-webdav) upgrade script for openwrt

aliyundrive-webdav-upgrade.sh

#!/bin/sh
# Author: An Shen
# Date: 2022-02-16
# Version: 1.0
# Description: aliyundrive-webdav upgrade script
# Usage: ./aliyundrive-webdav-upgrade.sh
# Reference: https://www.github.com/ansen

. /etc/profile >/dev/null 2>&1

function log(){
    echo "[$(date +'%Y-%m-%d %H:%M:%S')] - $1"
}


function get_latest_info(){
    local latest_info_file='/tmp/aliyundrive-webdav-latest-info.json'
    wget -q -O ${latest_info_file} https://api.github.com/repos/messense/aliyundrive-webdav/releases/latest
    [[ $? -ne 0 ]] && log "Failed to get latest info" && exit 1
    latest_version=$(grep tag_name ${latest_info_file} | cut -d '"' -f 4| sed 's/^v//g')
    latest_comments=$(grep body ${latest_info_file} | cut -d '"' -f 4)
    rm -f ${latest_info_file}
}

function upgrade() {
    local hardware=$(uname -m)
    local base_download_url="https://github.com/messense/aliyundrive-webdav/releases/download"
    local aliyundrive_webdav_download_url="${base_download_url}/v${latest_version}/aliyundrive-webdav_${latest_version}-1_${hardware}.ipk"
    local luci_app_download_url="${base_download_url}/v${latest_version}/luci-app-aliyundrive-webdav_${latest_version}_all.ipk"
    
    rm -f /tmp/aliyundrive-webdav.ipk /tmp/luci-app-aliyundrive-webdav.ipk
    log "Downloading aliyundrive-webdav_${latest_version}-1_${hardware}.ipk ..."
    wget -q -O /tmp/aliyundrive-webdav.ipk $aliyundrive_webdav_download_url
    [[ $? -ne 0 ]] && log "Download aliyundrive-webdav.ipk failed" && exit 1
    log "Downloading luci-app-aliyundrive-webdav_${latest_version}_all.ipk ..."
    wget -q -O /tmp/luci-app-aliyundrive-webdav.ipk $luci_app_download_url
    [[ $? -ne 0 ]] && log "Download luci-app-aliyundrive-webdav.ipk failed" && exit 1
    log "Installing aliyundrive-webdav ..."
    opkg install /tmp/aliyundrive-webdav.ipk
    [[ $? -ne 0 ]] && log "Install aliyundrive-webdav.ipk failed" && exit 1
    log "Installing luci-app-aliyundrive-webdav ..."
    opkg install /tmp/luci-app-aliyundrive-webdav.ipk
    [[ $? -ne 0 ]] && log "Install luci-app-aliyundrive-webdav.ipk failed" && exit 1
    log "Upgrade aliyundrive-webdav success"
    rm -f /tmp/aliyundrive-webdav.ipk /tmp/luci-app-aliyundrive-webdav.ipk
    rm -f /etc/config/aliyundrive-webdav-opkg

}


function main(){
    confirm="$1"
    current=$(aliyundrive-webdav -V| awk '{print $NF}')
    get_latest_info

    if [ "$latest_version" == "$current" ];then
        log "No update available"
        exit 0
    fi

    log "New version available: $latest_version"
    log "upgrade comments: $latest_comments"
    if [ "x$confirm" == "x-y" ];then
        choice="y"
    else
        log "Do you want to upgrade? [y/n]"
        read -p "Please input your choice: " choice
    fi
    case $choice in
        y|Y)
            upgrade
            ;;
        n|N)
            log "Exit"
            exit 0
            ;;
        *)
            log "Invalid input"
            exit 1
            ;;
    esac
}

main "$@"