docker_start

#!/bin/bash

CONTAINER_NAME=fccelixir
IS_IMAGE_EXISTS=$(docker image ls --quiet --filter reference=$CONTAINER_NAME)
IS_CONTAINER_RUNNING=$(docker container ls --quiet --filter name=$CONTAINER_NAME)
WORKDIR=/home/$USER/freecodecamp-elixir/

if [ -z $IS_IMAGE_EXISTS ]; then
    echo "building image $CONTAINER_NAME"
    docker image build \
        --build-arg USER_ID=$(id -u ${USER}) \
        --build-arg GROUP_ID=$(id -u ${USER}) \
        --build-arg USERNAME=$USER \
        --build-arg WORKDIR=$WORKDIR \
        --tag $CONTAINER_NAME .

    if [ -z $IS_CONTAINER_RUNNING ]; then
        echo "running $CONTAINER_NAME"
        docker container run --rm \
            -v $(pwd):$WORKDIR \
            --tty \
            --detach \
            --name $CONTAINER_NAME \
            $CONTAINER_NAME
    else
        echo "starting $CONTAINER_NAME"
        docker container start $CONTAINER_NAME
    fi
else
    echo "existing image found, running $CONTAINER_NAME"
        docker container run --rm \
            -v $(pwd):$WORKDIR \
            --tty \
            --detach \
            --name $CONTAINER_NAME \
            $CONTAINER_NAME
fi

# aliasing commands: elixir, iex and mix
for COMMAND in elixir iex mix elixirc; do
    # IS_ALIAS_EXISTS=$(alias $COMMAND >/dev/null 2>&1)
    IS_ALIAS_EXISTS=$(alias $COMMAND >/dev/null 2>&1)
    if [ -z $IS_ALIAS_EXISTS ]; then
        echo "setting up alias for command $COMMAND"
        alias $COMMAND="docker container exec --interactive --tty $CONTAINER_NAME $COMMAND"
        echo "done: alias $COMMAND"
    else
        echo "alias $COMMAND already set up"
    fi
done