#!/usr/bin/env bash

set -euo pipefail

SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
ROOT_DIR=$(cd "$SCRIPT_DIR/../.." && pwd)

SHELLSPEC_VERSION="0.28.1"
VENDOR_DIR="$SCRIPT_DIR/.vendor"
ARCHIVE="$VENDOR_DIR/shellspec-${SHELLSPEC_VERSION}.tar.gz"
EXTRACT_DIR="$VENDOR_DIR/shellspec-${SHELLSPEC_VERSION}"

mkdir -p "$VENDOR_DIR"

if command -v shellspec >/dev/null 2>&1; then
  SHELLSPEC_BIN="shellspec"
else
  if [[ ! -d "$EXTRACT_DIR" ]]; then
    if [[ ! -f "$ARCHIVE" ]]; then
      # GitHub tags may be either `v<version>` or `<version>`.
      curl -fsSL "https://github.com/shellspec/shellspec/archive/refs/tags/v${SHELLSPEC_VERSION}.tar.gz" -o "$ARCHIVE" \
        || curl -fsSL "https://github.com/shellspec/shellspec/archive/refs/tags/${SHELLSPEC_VERSION}.tar.gz" -o "$ARCHIVE"
    fi
    tar -xzf "$ARCHIVE" -C "$VENDOR_DIR"

    extracted_dir=""
    if [[ -d "$VENDOR_DIR/shellspec-${SHELLSPEC_VERSION}" ]]; then
      extracted_dir="$VENDOR_DIR/shellspec-${SHELLSPEC_VERSION}"
    elif [[ -d "$VENDOR_DIR/shellspec-v${SHELLSPEC_VERSION}" ]]; then
      extracted_dir="$VENDOR_DIR/shellspec-v${SHELLSPEC_VERSION}"
    fi

    if [[ -n "$extracted_dir" && "$extracted_dir" != "$EXTRACT_DIR" ]]; then
      mv "$extracted_dir" "$EXTRACT_DIR"
    fi
  fi

  SHELLSPEC_BIN="$EXTRACT_DIR/shellspec"
fi

cd "$ROOT_DIR"
exec "$SHELLSPEC_BIN" --shell bash "$ROOT_DIR/tests/shellspec/spec" "$@"