update.ab

import { download } from "std/http"
import { dir_exist, make_executable, create_symbolic_link,create_dir,file_exist } from "std/fs"
import { exit } from "std/env"

let bool_true  = 1
let bool_false = 0

fun download_latest_package(target:Text){
    echo "run download_latest_package"
    let is_download_succ = download(target, "./SgridCloudServer.tar.gz")
    if is_download_succ == bool_false {
        echo "download failed"
        exit(1)
    }
}

fun linux_service_stop(){
    echo "stop linux service"
    $ systemctl stop sgrid $ failed {
        echo "stop linux service failed"
        exit(1)
    }
}

fun linux_service_start(){
    echo "start linux service"
    $ systemctl start sgrid $ failed {
        echo "start linux service failed"
        exit(1)
    }
}

fun remove_old(){
    echo "Removing old"
    $ rm -r ./app $ failed {
        echo "app is not exist, ignore"
    }
    $ rm -rf ./dist $ failed {
        echo "dist is not exist, ignore"
    }
}

fun if_not_exist_then_create(path: Text): Num {
    echo "Checking if {path} exists, if not, creating it..."
    if not dir_exist(path) {
        create_dir(path)
        return bool_true
    }
    return bool_false
}



fun tar(){
    $ tar -xvf ./SgridCloudServer.tar.gz $ failed {
        echo "dist is not exist, ignore"
    }
    $ chmod +x ./app $ failed {
        echo "add permission failed"
    }
}
// how to run this script ?
// ./update.sh http://124.220.19.199:17853/fm//sgrid/sgridcloud.tar.gz

main(args){
    let download_path = args[1]
    if download_path == "" {
        echo "error: miss download_path"
        exit(1)
    }
    // DOWN
    download_latest_package(download_path)
    linux_service_stop()
    // REMOVE
    remove_old()
    // TAR
    tar()   
    // START
    linux_service_start()
}