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

# -----------------------------
# Intro
# -----------------------------
echo "Project Configurator"
echo "--------------------"

# -----------------------------
# Projektname abfragen
# -----------------------------
read -rp "What should the project be called? " PROJECT_NAME

if [[ -z "$PROJECT_NAME" ]]; then
    echo "Project name cannot be empty."
    exit 1
fi

if [[ ! "$PROJECT_NAME" =~ ^[a-zA-Z0-9_-]+$ ]]; then
    echo "Invalid project name. Use only letters, numbers, _ or -"
    exit 1
fi

# -----------------------------
# Ordner umbenennen
# -----------------------------
if [ ! -d "__Project_Name__" ]; then
    echo "Placeholder directory '__Project_Name__' not found."
    exit 1
fi

echo "Renaming project directory..."
mv "__Project_Name__" "$PROJECT_NAME"

# -----------------------------
# CMakeLists.txt anpassen
# -----------------------------
if [ ! -f "CMakeLists.txt" ]; then
    echo "CMakeLists.txt not found in root."
    exit 1
fi

echo "Updating CMakeLists.txt..."
sed -i "s/__Project_Name__/$PROJECT_NAME/g" CMakeLists.txt

# -----------------------------
# globalVars.hpp anpassen
# -----------------------------
GLOBAL_VARS_PATH="$PROJECT_NAME/include/globalVars.hpp"

if [ ! -f "$GLOBAL_VARS_PATH" ]; then
    echo "globalVars.hpp not found in root."
    exit 1
fi

echo "Updating globalVars.hpp..."
sed -i "s/__Project_Name__/$PROJECT_NAME/g" "$GLOBAL_VARS_PATH"

# -----------------------------
# Git Submodule aktualisieren
# -----------------------------
if [ -f ".gitmodules" ]; then
    echo "Initializing and updating submodules..."
    git submodule update --init --recursive

    echo "Updating submodules to latest main branch..."
    git submodule foreach '
        git fetch origin &&
        git checkout main &&
        git pull origin main
    '
else
    echo "No submodules found. Skipping."
fi

# -----------------------------
# Git vorbereiten
# -----------------------------
echo "Preparing git repository..."

# falls das Repo aus Template kommt, existiert Git schon
git add .
git commit -m "Configure project $PROJECT_NAME"

# -----------------------------
# Ziel-Repository pushen
# -----------------------------

git push -u origin main

# -----------------------------
# Fertig
# -----------------------------
echo "Done."
echo "Project '$PROJECT_NAME' is ready."