lucy

#!/bin/bash
# License:  https://raw.githubusercontent.com/pr3d4t0r/lucyfer/master/LICENSE.txt

set -e


# +++ constants +++

DEFAULT_SERVICE="lucyfer_service"
KALLISTO_HUB_VERSION="3.6.3"
LUCYFER_GITHUB_FILES=(
    "README-1ST.ipynb"
    "README-Kotlin.ipynb"
    "lucy" )
LUCYFER_GITHUB_PATH="https://raw.githubusercontent.com/pr3d4t0r/lucyfer/master"
LUCYFER_HUB_VERSION="3.6.3"


# *** functions ***

die() {
    echo "$1"
    exit "$2"
} # die


assertActionInCLI() {
    local syntax="syntax: lucy env | neuter | start | stop | status | token | update | version"
    [[ -z "$1" ]] && die "Command missing; $syntax" 8

    case "$1" in
        "env")
            ;;
        "neuter")
            ;;
        "start")
            ;;
        "stop")
            ;;
        "status")
            ;;
        "token")
            ;;
        "update")
            ;;
        "version")
            ;;
        *)
            die "$syntax" 9
            ;;
    esac
} # assertActionInCLI


assertDockerServiceIsRunning() {
    local uname=$(uname)
    local message="Docker daemon not running"

    case "$uname" in
        "Darwin")
            [[ -n $(ps aux | awk '/Docker\.app/ || /Docker Desktop\.app/') ]] || die "$message" 4
            ;;
        "Linux")
            die "Linux not supported yet" 6
            ;;
        *)
            die "$uname not supported" 3
    esac
} # assertDockerServiceIsRunning


assertDockerIsAvailable() {
    which docker-compose > /dev/null || die "docker-compose unavailable or not in path" 1
} # assertDockerIsAvailable


assertDockerComposeFileExists() {
    if [[ -z "$LUCYFER_COMPOSE" ]]
    then
        export LUCYFER_COMPOSE='lucyfer-compose.yaml'
    fi
    [[ -e "$LUCYFER_COMPOSE" ]] || die "$LUCYFER_COMPOSE is not present in pwd == $(pwd)" 2
} # assertDockerComposeFileExists


assertComponentExists() {
    # Make a dynamic list at some point?
    case "$container" in
        "")
            ;;
        "lucyfer")
            ;;
        "kallisto")
            ;;
        *)
            awk -F "'" 'BEGIN { print("Available lucyfer containers:\n"); } /container_name/ { printf("* %s\n", $2); } END { print(""); }' "$LUCYFER_COMPOSE"
            die "Container $container not found" 11
    esac
} # assertComponentExists


assertWorkspaceExists() {
    if [[ -z "$LUCYFER_WORKSPACE" ]]
    then
        export LUCYFER_WORKSPACE="$(pwd)"
        echo "LUCYFER_WORKSPACE=$LUCYFER_WORKSPACE"
    fi
} # assertWorkspaceExists


assertDataRepositoryExists() {
    if [[ -z "$KALLISTO_DATA" ]]
    then
        export KALLISTO_DATA="$(pwd)/data"
        echo "KALLISTO_DATA=$KALLISTO_DATA"
    fi

    mkdir -p "$KALLISTO_DATA"
} # assertDataRepositoryExists


setOwnership() {
    # Set ownership to the correct user:group to avoid conflicts
    # between the internal Docker container user names and the
    # host's.
    #
    # This script resolves to the userID:groupID of the account
    # from whence it was invoked.
    #
    # Documented method because Docker permissions and ownership
    # kinda suck.
    export BLAZEGRAPH_GID=$(id -g)
    export BLAZEGRAPH_UID=$(id -u)
    export JUPYTER_LAB_GID=$(id -g)
    export JUPYTER_LAB_UID=$(id -u)
} # setOwnership


setHostPorts() {
    if [[ -z "$LUCYFER_PORT" ]]
    then
        export LUCYFER_PORT="8805"
    fi

    if [[ -z "$KALLISTO_PORT" ]]
    then
        export KALLISTO_PORT="8808"
    fi
} # setHostPorts


setOpenOnStart() {
    if [[ -z "$LUCYFER_OPEN_ON_START" ]]
    then
        LUCYFER_OPEN_ON_START="yes"
    fi
} # setOpenOnStart


_snuffContainer() {
    [[ -n "$1" ]] || die "container name not specified in _snuffContainer()" 5

    local container=$(docker ps -a | awk -v "containerName=$1" '$0 ~ containerName { print($NF); }')

    if [[ -n "$container" ]]
    then
        docker rm -f "$container"
    fi
} # _snuffContainer


resolveImageByPlatform() {
   local platform=$(uname -a | awk 'BEGIN { m = "ARM64"; i = "X86"; } { if ($14 ~ m) print(m); if ($14 ~ i) print(i); }')

    case "$platform" in
        "ARM64")
            export KALLISTO_IMAGE="pr3d4t0r/kallisto-m:$KALLISTO_HUB_VERSION"
            export LUCYFER_IMAGE="pr3d4t0r/lucyfer-m:$LUCYFER_HUB_VERSION"
            ;;
        "X86")
            export KALLISTO_IMAGE="pr3d4t0r/kallisto:$KALLISTO_HUB_VERSION"
            export LUCYFER_IMAGE="pr3d4t0r/lucyfer:$LUCYFER_HUB_VERSION"
            ;;
        *)
            die "host platform not supported" 7
            ;;
    esac
} # resolveImageByPlatform


showLucyferLab() {
    echo ""
    docker-compose -f "$LUCYFER_COMPOSE" ps -a
} # showLucyferLab


showToken() {
    local token

    if [[ ! -e ".jupyter/jupyter_server_config.json" ]]
    then
        token=$(docker logs lucyfer 2>&1 | awk -F "?" '/http:/ { gsub("token=", "", $NF); printf($NF); exit(0); }')

        if [[ -n "$token" ]]
        then
            printf "\nLucyfer authentication token = $token\n"
            case $(uname) in
                "Darwin")
                    echo "    The authentication token is available on the clipboard; Cmd-V to paste"
                    echo "$token" | pbcopy
                    ;;
            esac
        fi
    else
        printf "\nUse the password to log on to Lucyfer; no token available\n"
    fi
} # showToken


runLucyferLab() {
    _snuffContainer "lucyfer"
    _snuffContainer "kallisto"

    echo ""
    env | awk '/LUCYFER/ || /JUPYTER/ || /HOME/ || /BLAZE/ || /KALLISTO/' | sort
    if [[ -n "$container" ]]
    then
        local service="$container""_service"
        docker-compose -f "$LUCYFER_COMPOSE" up --remove-orphans --no-recreate -d "$service" || docker-compose rm -f
    else
        docker-compose -f "$LUCYFER_COMPOSE" up --remove-orphans --no-recreate -d "$DEFAULT_SERVICE" || docker-compose rm -f
    fi
    # TODO: replace with an actual check to see if the container started/is healthy

    sleep 10
    showLucyferLab
    showToken
    [[ "yes" = "$LUCYFER_OPEN_ON_START" ]] && open "http://localhost:$LUCYFER_PORT"
} # runLucyferLab


killLucyferLab() {
    echo ""
    env | awk '/LUCYFER/ || /JUPYTER/ || /HOME/ || /BLAZE/ || /KALLISTO/' | sort
    if [[ -n "$container" ]]
    then
        local service="$container""_service"
        docker-compose -f "$LUCYFER_COMPOSE" stop "$service"
    else
        docker-compose -f "$LUCYFER_COMPOSE" stop
    fi
    showLucyferLab
} # killLucyferLab


displayEnvironment() {
    echo "export LUCYFER_WORKSPACE=$(pwd)"
    echo "export KALLISTO_DATA=$(pwd)/data"
} # displayEnvironment


_fetchFileFrom() {
    local fullURL="$1"
    local targetLocation="$2"

    if [[ -n "$(which wget)" ]]
    then
        wget -O "$targetLocation" "$fullURL"
    elif [[ -n "$(which curl)" ]]
    then
        curl -o "$targetLocation" "$fullURL"
    else
        die "Neither wget nor cURL are available; install either and retry" 10
    fi
} # _fetchFileFrom


update() {
    local fileName
    local fullURL
    local kallistoNewest
    local localPath
    local lucyNewest

    for fileName in ${LUCYFER_GITHUB_FILES[@]}
    do
        fullURL="$LUCYFER_GITHUB_PATH/$fileName"
        localPath="./$fileName"

        if [[ -f "$localPath" ]]
        then
            echo ">> $fullURL"
            echo [[ -e "$localPath" ]] && rm -f "$localPath"
            _fetchFileFrom "$fullURL" "$localPath"
            echo ""
        fi
    done

    chmod +x "./lucy"

    # Pull corresponding image from the hub:
    kallistoNewest=$(awk -v "i=$KALLISTO_IMAGE" -F "\"" '/KALLISTO_HUB_VERSION=/ && !/awk/ { split(i, b, ":"); printf("%s:%s\n", b[1], $2); }' ./lucy)
    lucyNewest=$(awk -v "i=$LUCYFER_IMAGE" -F "\"" '/LUCYFER_HUB_VERSION=/ && !/awk/ { split(i, b, ":"); printf("%s:%s\n", b[1], $2); }' ./lucy)

    docker pull "$lucyNewest"
    docker pull "$kallistoNewest"

    echo "Lucyfer update complete"
} # update


version() {
    printf "\nLucyfer version: $LUCYFER_HUB_VERSION\n"
} # version


neuterInstallation() {
    local answer
    read -p "Are you sure you want to neuter the Lucyfer installation? yes/NO " answer

    if [[ "$answer" == "yes" ]]
    then
        ./lucy stop
        docker rm -f lucyfer kallisto
        rm -vf ./.bash* ./.vimrc ./.viminfo ./kallisto-compose.yaml ./lucyfer-compose.yaml ./mornyng-compose.yaml ./.lesshst ./lucy ./.profile
        rm -Rvf "./.local" "./.ipython" "./.vim" "./.ssh" "./.idea" "./.m2" "./.npm" "./.config" "./.cache" "./.jupyter" "./.ipynb_checkpoints"
        rm -Rfv ./README-1ST.ipynb ./README-Kotlin.ipynb
        docker ps -a
        echo "Lucyfer was neutered"
    else
        echo "Lucyfer neutering aborted - good choice"
    fi
    exit 0
} # neuterInstallation


# *** main ***

action="$1"
container="$2"
assertActionInCLI "$action"
assertDockerServiceIsRunning
assertDockerIsAvailable
assertDockerComposeFileExists
assertComponentExists
assertWorkspaceExists
assertDataRepositoryExists
setOwnership
setHostPorts
setOpenOnStart
resolveImageByPlatform

case "$action" in
    "env")
        displayEnvironment
        ;;
    "neuter")
        neuterInstallation
        ;;
    "start")
        runLucyferLab
        ;;
    "status")
        showLucyferLab
        ;;
    "stop")
        killLucyferLab
        ;;
    "token")
        showToken
        ;;
    "update")
        update
        ;;
    "version")
        version
        ;;
esac
echo ""