#!/bin/sh
#
# Run docker-composer in a container

set -e

SCRIPT_PATH="$(readlink -f "$0")"
SELF_URL="https://raw.githubusercontent.com/ayufan/docker-composer/refs/heads/master/run.sh"

# Self-update if --update flag is passed
if [ "$1" = "--update" ]; then
    echo "Updating script from $SELF_URL..."
    if curl -fsSL "$SELF_URL" -o "/tmp/compose-run.sh" && chmod +x "/tmp/compose-run.sh" && mv "/tmp/compose-run.sh" "$SCRIPT_PATH"; then
        echo "Update complete."
        exit 0
    else
        echo "Update failed."
        exit 1
    fi
fi

export DOCKER_IMAGE="ayufan/docker-composer:${DOCKER_COMPOSER_TAG-latest}"
export APPS_DIR=$(realpath "${APPS_DIR:-/srv/apps}")

DOCKER_RUN_OPTIONS="-e GIT_EDITOR -e EDITOR -e VISUAL -e TERM -e APPS_DIR"
DOCKER_ADDR=""
VOLUMES=""

# Install user if missing
if ! id -u compose >/dev/null 2>&1; then
    sudo useradd -m -G docker -s "$SCRIPT_PATH" compose
    sudo install -d -m 700 ~compose/.ssh -o compose -g compose
    if [ -e ~/.ssh/authorized_keys ]; then
      sudo cp ~/.ssh/authorized_keys ~compose/.ssh/authorized_keys
      sudo chown compose:compose ~compose/.ssh/authorized_keys
      sudo chmod 600 ~compose/.ssh/authorized_keys
    fi
fi

# Setup options for connecting to docker host
if [ -z "$DOCKER_HOST" ]; then
    DOCKER_HOST="/var/run/docker.sock"
fi
if [ -S "$DOCKER_HOST" ]; then
    DOCKER_ADDR="-v $DOCKER_HOST:$DOCKER_HOST -e DOCKER_HOST"
else
    DOCKER_ADDR="-e DOCKER_HOST -e DOCKER_TLS_VERIFY -e DOCKER_CERT_PATH"
fi

# Only allocate tty if we detect one
DOCKER_RUN_OPTIONS="$DOCKER_RUN_OPTIONS -i"
if [ -t 1 ]; then
    DOCKER_RUN_OPTIONS="$DOCKER_RUN_OPTIONS -t"
fi

exec docker run --rm $DOCKER_RUN_OPTIONS -v "$APPS_DIR:$APPS_DIR" -e DOCKER_IMAGE $DOCKER_ADDR $VOLUMES $DOCKER_IMAGE "$@"