#!/bin/sh

set -u
set -e

ARGS="$*"
echo "Arguments: $ARGS"

EXT_UID=${EXT_UID:-999}
EXT_GID=${EXT_GID:-999}

# Create missing directories
mkdir -p _cache
mkdir -p _build
mkdir -p .marp
mkdir -p /home/appuser

# Create user with given ID if needed
if ! grep -q "^[^:]*:[^:]*:$EXT_UID:" /etc/group ; then
  groupadd -g "$EXT_GID" appuser
fi

# Create group with given ID if needed
if ! grep -q "^[^:]*:[^:]*:$EXT_UID:" /etc/passwd ; then
  useradd -r -u "$EXT_UID" -g appuser appuser
fi

chown -R "$EXT_UID:$EXT_GID" _cache
chown -R "$EXT_UID:$EXT_GID" _build
chown -R "$EXT_UID:$EXT_GID" .marp
chown -R "$EXT_UID:$EXT_GID" /home/appuser

# Patch mkdocs configuration 
# set -x
if [ -f mkdocs-patch.yml ]; then
  # patch reference mkdocs with user-provided options
  yq eval-all '. as $item ireduce ({}; . * $item)' \
    mkdocs-source.yml \
    mkdocs-patch.yml \
    > mkdocs.yml
else
  # use reference mkdocs only (no options)
  ln -s mkdocs-source.yml mkdocs.yml
fi
# set +x

if [ "$1" = "shell" ]; then
  exec bash
else
  exec gosu "$EXT_UID:$EXT_GID" make "$@"
fi