#!/usr/bin/env bash
set -euo pipefail

usage() {
  cat <<'EOF'
Usage:
  plugin validate
  plugin test [mix test args...]
  plugin precommit [mix precommit args...]
  plugin shell
EOF
}

fail() {
  echo "plugin: $*" >&2
  exit 1
}

script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd -P)"
plugin_root="$(cd "$script_dir/.." && pwd -P)"
host_root="${TRIBES_HOST_ROOT:-$plugin_root/../tribes}"
host_root="$(cd "$host_root" && pwd -P)"
host_script="$host_root/scripts/plugin"

command_name="${1:-}"
if [[ -z "$command_name" ]]; then
  usage
  exit 1
fi
shift

case "$command_name" in
  validate | test | precommit | shell) ;;
  -h | --help | help)
    usage
    exit 0
    ;;
  *)
    usage
    fail "unknown command: $command_name"
    ;;
esac

[[ -x "$host_script" || -f "$host_script" ]] || fail "expected host plugin script at $host_script"

if [[ "${DEVENV_ROOT:-}" == "$plugin_root" ]]; then
  command -v devenv >/dev/null 2>&1 || fail "devenv is required when running from the plugin devenv shell"
  cd "$host_root"
  exec devenv shell -- bash ./scripts/plugin "$command_name" "$plugin_root" "$@"
fi

exec bash "$host_script" "$command_name" "$plugin_root" "$@"