docker-compose create helper script (dialog)

/usr/local/bin/create-compose.sh

Script Headline

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# Create a temporary file to store dialog output
tempfile=$(mktemp /tmp/dialog.XXXXXX)
BACKGROUND_TITLE="Docker Compose Configurator"
dir=$(dirname $(pwd) | awk -F/ '{print $NF}')
existing_networks=$(docker network ls |awk '{print $2" "$3}'|grep -v NAME)
existing_users=$(cat /etc/passwd|egrep -v 'nologin|false'| awk -F: '{print $1" "$3}')
existing_user_ids=$(cat /etc/passwd|egrep -v 'nologin|false'| awk -F: '{print ":"$3":"}')
tz=$(cat /etc/timezone)



# Function to get user input with dialog
exec 3>&1;

function status() {
    status_update="${1}"
    echo "${status_update}" >> /tmp/dialog-log
}

function wrapper() {
    feature="${1}"
    title="${2}"
    dimensions="${3}"
    data "${4}"
    
    response=$(dialog --backtitle "${BACKGROUND_TITLE} - ${title}" \
                      --${feature} "${title}" \
                      "${dimensions}" \
                      "${data}" \
                      2>&1 1>&3 )
    exit_code=$?
    
    case $exit_code in
      0) status "${2} - success exit code"
         ;;
      3) status "${2} - alternate button"
         ;;
      *) status "${2} - non-zero error code"
         ;;
    esac
    
    if [[ -z "${response}" ]]
    then
      echo "${response}"
    fi

}

## SERVICE_NAME
    service_name=$(dialog  --backtitle "${BACKGROUND_TITLE} - Service Name"  --inputbox 'Service Name' 0 0 ${dir} 2>&1 1>&3);

## DOCKER COMPOSE IMAGE and DOCKER IMAGE TEST PULL
    image_name=$(dialog --backtitle "${BACKGROUND_TITLE} - Docker Image Name" --inputbox 'Image Name' 0 0 2>&1 1>&3);

    rm /tmp/image_pull
    image_test=$(docker pull $image_name || echo error > /tmp/image_pull)
    if [[ $(cat /tmp/image_pull) == "error" ]]
    then
        image_name=$(dialog --backtitle "${BACKGROUND_TITLE} - Docker Error" --inputbox 'Docker Image not found - Try again' 0 0 2>&1 1>&3);
    fi

## TOP LEVEL DOMAIN
    top_level_domain=$(dialog --backtitle "${BACKGROUND_TITLE}" --title "Top Level Domain" --inputbox "domain" 8 50 "pknw1.co.uk"  2>&1 1>&3);

## DOCKER CONFIG ROOT FOLDER
    config_folder=$(dialog --backtitle "${BACKGROUND_TITLE}" --title "config folder" --inputbox "enter the docker config root path" 8 50 "/etc/docker/config" 2>&1 1>&3)

## DOCKER NETWORK SELECTION & CREATION
    docker_network=$(dialog --backtitle "${BACKGROUND_TITLE}" --menu "Choose Network: " 22 50 15 ${existing_networks} New Network 2>&1 1>&3)
    if [[ ${docker_network} == "New" ]]
    then
        docker_network=$(dialog --backtitle "${BACKGROUND_TITLE}" --inputbox 'New Network Name:' 0 0 2>&1 1>&3);
    fi
## USER SELECTION
    choose_user=$(dialog --backtitle "${BACKGROUND_TITLE}" --menu "Choose User: " 22 35 10 $existing_users 2>&1 1>&3)
    rm /tmp/id
    
## GROUP SELECTION
    for ID in $existing_user_ids; do cat /etc/group | grep $ID|awk -F: '{print $1" "$3}' >> /tmp/id; done
    existing_groups=$(cat /tmp/id| sort -u)
    select_group=$(dialog --backtitle "${BACKGROUND_TITLE}" --menu "Choose Group: " 22 35 10 $existing_groups 2>&1 1>&3)
 
## RESTART POLICY 
 restart=$(dialog --backtitle "${BACKGROUND_TITLE}" --menu "Choose Restart Option: " 22 35 10 no 'never restart' always 'always start' on-failure 'fail' unless-stopped 'unl'  2>&1 1>&3)

## NGINX-PROXY APP PORT
    app_port=$(dialog --inputbox 'App Port for Proxy' 0 0 "8080" 2>&1 1>&3);

### Volumes and Mounts
    active_volumes=$(docker ps --format "{{.Names}}" | xargs -n1 docker inspect -f '{{json .Mounts}}' | jq -r '.[] | "\(.Source):\(.Destination) \(.Source):\(.Destination) off"' |sort -u)     
    filtered_volumes=$(echo "${active_volumes}" | egrep -v 'sock|squid|yml|config' | sed 's/media off/media on/g'| sed 's/fuse off/fuse on/g')

    selected_volumes=$(dialog --backtitle "${BACKGROUND_TITLE} - Add predefined volumes" --extra-button --extra-label "Add Custom Mounts" --checklist "Select Volumes to Map"  20 100 20 $filtered_volumes 2>&1 1>&3);
    dialog_exit_code=$?

    case $dialog_exit_code in
      0) echo "Add Selected Volumes"
         echo ${selected_volumes}
         add_volume="false"
         ;;
      1) echo "Cancel"
         add_volume="false"
         ;;
      3) echo "Add Custom Mount" 
         add_volume="true"
         ;;
      *) echo "" 
         add_volume="false"
         ;;
    esac

    volumes=()

    for SEL in "${selected_volumes}"
    do
      volumes+=("${SEL}")
    done

    while [[ "${add_volume}" == "true" ]]
    do
        vol=$(dialog --backtitle "${BACKGROUND_TITLE} - Add Custom Mount" --separate-widget $'\n' --title "Add custom mount" --extra-button --extra-label "Add Another" --form ""  0 0 0 "Source:" 1 1 "$source" 1 10 30 0 "Mount:" 2 1 "$mount" 2 10 30 0 2>&1 1>&3 )
        dialog_exit_code=$?
        form=$(echo ${vol}| tr ' ' ':')
        case $dialog_exit_code in
          0) echo "Add Single Custom"
             volumes+=" ${form}"
             add_volume="false"
             ;;
          1) echo "Cancel"
             add_volume="false"
             ;;
          3) echo "Add More" 
             volumes+=" ${form}"
             add_volume="true"
             ;;
          *) echo "" 
             add_volume="false"
             ;;
        esac
done

## PRIVILEGED MODE
    if dialog --clear --backtitle "${BACKGROUND_TITLE}" --title "Priviliged Mode" --yesno "Enable Privilged Mode?" 0 0 ;then priv=true;else priv=false;fi

## DNS OVERRIDE
    dns=$(dialog --backtitle "${BACKGROUND_TITLE}" --inputbox 'Override Primary DNS' 0 0 "8.8.8.8" 2>&1 1>&3);

## RESOURCE LIMITING
    cpus=$(dialog --backtitle "${BACKGROUND_TITLE}" --inputbox 'Resource Allocate CPUs' 0 0 "1" 2>&1 1>&3);
    memory=$(dialog --backtitle "${BACKGROUND_TITLE}" --inputbox 'Resource Allocate Memory' 0 0 "200" 2>&1 1>&3);

## TimeZone 
    timezone=$(dialog --backtitle "${BACKGROUND_TITLE}" --inputbox 'Select Timezone' 0 0 $tz 2>&1 1>&3);

exec 3>&-;

rm -f "$tempfile"

# Display results to confirm input
dialog --backtitle "${BACKGROUND_TITLE} - Configuration Summary" --title "Confirmation" --msgbox "\
    Service Name: $service_name\n\
    Image Name: $image_name\n\
    Top Level Domain: $top_level_domain\n\
    Config Folder: $config_folder\n\
    Network: $docker_network\n\
    User: $choose_user\n\
    Group: $select_group\n\
    Privileged: $priv\n\
    Vhost: "${service_name}.pknw1.co.uk"\n\
    Port: $app_port\n\
    DNS: $dns\n\
    CPU: $cpus\n\
    Memory: $memory\n\
    TimeZone: $timezone\n\
    Volumes: $volumes\n\
    Timezone: $timezone" 20 70
clear

sdfsd

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