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


REPO_DIR="$HOME/Documents/Github/nixos-config"
cd "$REPO_DIR" || { echo "Error: cannot change directory to $REPO_DIR" >&2; exit 1; }

echo "Fetching latest changes from git..."
if ! git fetch --all; then
    echo "Error: git fetch failed" >&2
    exit 2
fi

LOCAL_HASH=$(git rev-parse @)
REMOTE_HASH=$(git rev-parse @{u})

if [ "$LOCAL_HASH" = "$REMOTE_HASH" ]; then
    echo "The repository is already up to date."
else
    echo "Updates are available. Pulling latest changes..."
    if ! git pull; then
        echo "Error: git pull failed" >&2; exit 3
    fi
    echo "Repository updated successfully."
fi

chmod -R u+rwX "$REPO_DIR"

sudo ./update-nixos.sh

echo "System update from git completed successfully."