#!/bin/bash

# potential flags: custom tag, squash, delete/redo, custom dir, debug (don't delete tmp), custom build image
# todo: configure autostart service
# todo: handle volumes

# Variables
quit() {
        podman rm -f tmp-$epoch 2>&1 > /dev/null
        exit $1
}

today=$(date "+%Y-%m-%d-T%H%M")
epoch=$(date "+%s.%3N")
tag=latest

# Handle errors/arguments
if [[ $# -eq 0 ]]; then
        echo "Usage: $0 directory [image_name]"
        exit 0
fi

if [[ ! -d $1 ]]; then
        echo "Error: directory \"$1\" not found."
        exit 1
fi

cd $1

if [[ -n $2 ]]; then
        name=$2
else
        name=$(basename $(pwd))
fi

# Main

# build image
echo "Building container ..."
podman build -f Containerfile -t tmp:$epoch || quit 2

# start container
echo "Creating container ..."
podman create --name tmp-$epoch tmp:$epoch || quit 2
podman start tmp-$epoch || quit 2
# Systemdfile is for commands that need systemd to execute
echo "Running build steps that require systemd ..."
podman exec tmp-$epoch bash -c "if [ -f /root/Systemdfile ]; then /root/Systemdfile; fi" || quit 2

# commit finalized container state to image
echo "Committing container to image ..."
podman commit tmp-$epoch $name:$today || quit 2
# tag with latest tag
podman tag $name:$today $name:$tag
echo "Finished!"

quit 0