compile

#!/bin/bash -e

set -o pipefail

BUILDPACK_HOME=$(cd "$(dirname "$0")" && cd .. && pwd)
STEPS="$BUILDPACK_HOME/steps"
BUILD_DIR=$1
CACHE_DIR=$2
ENV_DIR=$3

arrow() {
    sed -u 's/^/-----> /'
}

indent() {
    sed -u 's/^/       /'
}

section() {
    echo "$@" | arrow
    indent
    echo
}

for env_file in $(find "$ENV_DIR" -type f -print); do
    name=$(basename "$env_file")
    export "$name=$(< "$env_file")"
done

SAVED_APP=$(mktemp -d)
"$STEPS/prepare-app-dir" "$BUILD_DIR" "$SAVED_APP" |& section "Preparing /app"
(
    cd /app

    "$STEPS/restore-cache" "$CACHE_DIR" \
        < "$BUILDPACK_HOME/config/cache-entries" \
        |& section "Restoring cache"

    "$STEPS/install-pyenv" |& section "Installing pyenv"

    export PYENV_ROOT="$PWD/.pyenv"
    export PATH="$PYENV_ROOT/bin:$PATH"
    eval "$(pyenv init -)"

    "$STEPS/install-python" |& section "Installing Python"
    "$STEPS/make-virtualenv" |& section "Creating virtualenv"

    (
        source .virtualenv/bin/activate
        "$STEPS/install-app-dependencies" |& section "Installing app dependencies"
        "$STEPS/create-profile" |& section "Creating profile script"
    )
)

"$STEPS/save-app-dir" "$BUILD_DIR" "$SAVED_APP" |& section "Saving /app"
(
    cd "$BUILD_DIR"

    "$STEPS/save-cache" "$CACHE_DIR" \
        < "$BUILDPACK_HOME/config/cache-entries" \
        |& section "Saving cache"
)