#!/usr/bin/env bash

# Usage: ./watch [frontend|export] [extra cargo params...]

set -e

_SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)
pushd "$_SCRIPT_DIR" > /dev/null

_RENDER_TARGET=${1:-${RENDER_TARGET:-frontend}}
export RENDER_TARGET="$_RENDER_TARGET"
_BUILD_COMMAND=("$_SCRIPT_DIR/build" "$RENDER_TARGET" "${@:2}")

# The initial build uses the protected build entry point. Its lock is released
# before cargo watch starts waiting for source changes.
"${_BUILD_COMMAND[@]}"

# cargo watch runs shell commands; single-quote each original argument for sh.
_WATCH_BUILD_COMMAND=""
for _arg in "${_BUILD_COMMAND[@]}"; do
    _arg=${_arg//\'/\'\\\'\'}
    _WATCH_BUILD_COMMAND+=" '$_arg'"
done

set -x

cargo watch \
      --why \
      --postpone \
      -i "_tmp*" \
      -s "$_WATCH_BUILD_COMMAND" \
      -s "echo 'DONE\n'";

popd > /dev/null