#!/bin/sh

PROJECT_NAME=${PROJECT_NAME:-neo}
LIST=docker-compose.*.yml

alias dc="docker-compose -p $PROJECT_NAME"
# alias dc="echo docker-compose -p $PROJECT_NAME"

fatal() {
    echo "FATAL: $@"
    exit 1
}

default() {
    fopts=""
    for f in $LIST; do
        fopts="$fopts -f $f"
    done
    dc $fopts $*
}

includechain=0
handleFallthrough() {
    cmd=${1:-}; shift
    case $cmd in
        delete-project-files|dpf)
            [ -n "$1" ] || fatal "no directory specified"
            [ -d /srv/$1 ] || fatal "directory doesn't exist"
            ls /srv/$1
            printf "Are you sure? (yes/no) [no]: "
            read answer
            [ "$answer" = "yes" ] && sudo rm -rf /srv/$1 || fatal "cancelled"
        ;;

        -i) #include
            if [ $includechain -eq 0 ]; then
                LIST="docker-compose.$1.yml"
                includechain=1
            else
                LIST="$LIST docker-compose.$1.yml"
            fi
            shift
            handleFallthrough $@
        ;;

        -x) #exclude
            LIST=$(echo $LIST | sed "s/docker-compose.$1.yml//")
            shift
            handleFallthrough $@
        ;;

        make:*)
            WHAT=`echo $cmd | cut -c6-`
            case $WHAT in
                dc|docker-compose)
                    [ -n "$1" ] || fatal "no name specified"
                    FILE="docker-compose.$1.yml"
                    [ -f $FILE ] && fatal "file exists"
                    echo -e "version: '2.2'\n" > $FILE
                    echo -e "services: \n" >> $FILE
                ;;
                backup)
                    [ -n "$1" ] || fatal "no name specified"
                    FILE="$1.tar.gz"
                    [ -f $FILE ] && fatal "file exists"
                    tar cvf $FILE /srv .
                ;;
                *) fatal "not supported" ;;
            esac
        ;;

        setup:*|s:*)
            WHAT=`echo $cmd | cut -c8-`
            case $WHAT in
                ports) sudo setup-ports.sh up ;;
                def) sudo setup.sh ;;
                all|a)
                    sudo setup.sh
                    sudo setup-ports.sh up
                ;;
                *) fatal "not supported" ;;
            esac
        ;;

        # preference
        logs) default logs --tail=20 -f $@ ;;
        up) default up -d $@ ;;
        upr) default up -d --remove-orphans $@ ;;

        --help|-h)
            __() {
                colsep="$1"
                cmd="$2"
                desc="$3"
                aliases="$4"
                printf "%s %-20s %s %-64s %s %-40s %s \n" "$colsep" "$cmd" "$colsep" "$desc" "$colsep" "$aliases" "$colsep"
            }
            _hr() {
                repchar() {
                    printf "%$1s" | tr " " "$2"
                }
                __ "*" ${1:-$(repchar 20 -)} ${2:-$(repchar 64 -)} ${3:-$(repchar 40 -)}
            }
            _r() {
                __ "|" "$1" "$2" "$3"
            }
            _hr
            _r $0 Description Aliases
            _hr
            _hr "Flags" " " " "
            _hr
            _r "-x" "Excludes a docker-compose file from the list." " "
            _r "-i" "Includes a docker-compose file from the list." " "
            _hr
            _hr "Commands" " " " "
            _hr
            _r "dpf" "Delete project files." "delete-project-files <name>"
            _r "setup" "Run setup script." "sh ./utils/setup.sh"
            _r "make:dc <name>" "Make docker-compose file." "make:docker-compose <name>"
            _r "make:backup <name>" "Make backup file." "tar cvf <name>.tar.gz /srv"
            _hr
            _hr "Commands/aliases" "(shortcuts)" " "
            _hr
            _r "up" "Bring up services. (-d)" "$0 default up -d"
            _r "upr" "Bring up services and remove orphans." "$0 default up -d --remove-orphans"
            _r "logs" "View logs and follow with a tail of 20." "$0 default logs --tail=20 -f"
            _hr
            _r "default" "fallback to the main docker-compose command with fileopts." "docker-compose" 
            _hr
        ;;

        default) default $@ ;;
        *|'') default $cmd $@ ;;
    esac
}

handleFallthrough $@