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

##############################################
# make-template.sh
#
# This script packages a Unity template for local use
# in Unity Hub's ProjectTemplates folder.
#
# How it works:
# 1. Prompts for the full Unity version (e.g., 6000.1.15f1 or 6000.1.0b12).
# 2. Deletes ProjectVersion.txt from the package folder if it exists.
# 3. Creates a .tgz archive from the 'package' folder.
# 4. Moves the archive into the correct Unity ProjectTemplates folder
#    under C:\Program Files\Unity\Hub\Editor\<version>\Editor\Data\Resources\PackageManager\ProjectTemplates
#
# Requirements:
# - Run this script in Git Bash with Administrator privileges.
# - 'tar' command must be available (included with Git Bash).
##############################################

TEMPLATE_NAME="com.unity.template.malevolent.tgz"
SRC_DIR="package"

require() { command -v "$1" >/dev/null 2>&1 || { echo "Error: $1 not found in PATH"; exit 1; }; }
require tar

if [[ ! -d "$SRC_DIR" ]]; then
  echo "Error: '$SRC_DIR' directory not found in $(pwd)"
  exit 1
fi

read -rp "Enter full Unity version (e.g., 6000.1.15f1): " UNITY_VERSION
if [[ ! "$UNITY_VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+[a-z][0-9]+$ ]]; then
  echo "Error: version must look like '6000.1.15f1' or '6000.1.0b12'"
  exit 1
fi

# Path to Unity's ProjectTemplates folder (Git Bash/MSYS format)
TARGET_DIR="/c/Program Files/Unity/Hub/Editor/${UNITY_VERSION}/Editor/Data/Resources/PackageManager/ProjectTemplates"

if [[ ! -d "$TARGET_DIR" ]]; then
  echo "Could not find: $TARGET_DIR"
  echo "Available Editors under /c/Program Files/Unity/Hub/Editor:"
  ls -1d "/c/Program Files/Unity/Hub/Editor"/* 2>/dev/null || true
  exit 1
fi

# Remove ProjectVersion.txt if present
PROJECT_VERSION_FILE="${SRC_DIR}/ProjectData~/ProjectSettings/ProjectVersion.txt"
if [[ -f "$PROJECT_VERSION_FILE" ]]; then
  echo "Removing $PROJECT_VERSION_FILE..."
  rm -f "$PROJECT_VERSION_FILE"
else
  echo "No ProjectVersion.txt found, skipping removal."
fi

# Create the .tgz
echo "Creating archive: $TEMPLATE_NAME from '$SRC_DIR'..."
tar -czf "$TEMPLATE_NAME" "$SRC_DIR"

# Move to Unity's ProjectTemplates folder
echo "Moving $TEMPLATE_NAME to:"
echo "  $TARGET_DIR"
mv -f "$TEMPLATE_NAME" "$TARGET_DIR/"

echo "Done."
echo "Template installed to: $TARGET_DIR/$TEMPLATE_NAME"