#!/usr/bin/env bash
set -e

REPO_URL="https://zerolands.duckdns.org/git/D3SXX/Minecraft-Server-1.21.1-Mods.git"
BRANCH="main"

# ─── Install git if missing ───────────────────────────────────────────────────
install_git() {
    if command -v apt-get &>/dev/null; then
        sudo apt-get update -qq && sudo apt-get install -y git
    elif command -v dnf &>/dev/null; then
        sudo dnf install -y git
    elif command -v yum &>/dev/null; then
        sudo yum install -y git
    elif command -v pacman &>/dev/null; then
        sudo pacman -Sy --noconfirm git
    elif command -v zypper &>/dev/null; then
        sudo zypper install -y git
    elif command -v apk &>/dev/null; then
        sudo apk add --no-cache git
    elif command -v brew &>/dev/null; then
        brew install git
    else
        echo "ERROR: Could not detect a supported package manager. Install git manually."
        exit 1
    fi
}

if ! command -v git &>/dev/null; then
    echo "git not found. Attempting to install..."
    install_git
fi

# ─── Move to the directory containing this script ────────────────────────────
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "$SCRIPT_DIR"

# ─── Initialise repo if .git is missing ──────────────────────────────────────
if [ ! -d ".git" ]; then
    echo "Initialising git repository..."
    git init
    git remote add origin "$REPO_URL"
else
    # Ensure remote URL is correct
    git remote set-url origin "$REPO_URL" 2>/dev/null || git remote add origin "$REPO_URL"
fi

# ─── Full reset ────────────────────────────────
echo "Fetching latest mods from $REPO_URL ..."
git fetch --all --prune

echo "Resetting to origin/$BRANCH ..."
git checkout -B "$BRANCH" "origin/$BRANCH" --
git reset --hard "origin/$BRANCH"
git clean -fd

echo "Mods updated successfully."