#!/usr/bin/env bash

PKG_NAME="$1"

if [ -z "$PKG_NAME" ]; then
    echo "Usage: nnomarchy-pkg-add <package-name>"
    exit 1
fi

STATE_FILE="$HOME/.config/home-manager/user-packages.json"
mkdir -p "$(dirname "$STATE_FILE")"

if [ ! -f "$STATE_FILE" ]; then
    echo "[]" > "$STATE_FILE"
fi

if jq -e ". | index(\"$PKG_NAME\")" "$STATE_FILE" >/dev/null; then
    echo "Package $PKG_NAME is already in your user-packages.json"
    exit 0
fi

# Append package to the JSON array
jq ". + [\"$PKG_NAME\"]" "$STATE_FILE" > "${STATE_FILE}.tmp" && mv "${STATE_FILE}.tmp" "$STATE_FILE"

echo "Package $PKG_NAME added declaratively to $STATE_FILE."
echo "Applying changes with env-update..."
env-update