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

# Install the latest Rio terminal RPM on Fedora.
# https://raphamorim.io/rio/

# Check if running on Fedora.
if [[ ! -f /etc/os-release ]]; then
    echo "Cannot detect OS. This script only supports Fedora."
    exit 1
fi

source /etc/os-release
if [[ "$ID" != "fedora" ]]; then
    echo "This script only supports Fedora. Detected: $ID"
    exit 1
fi

# Detect architecture.
arch="$(uname -m)"
case "$arch" in
x86_64)
    rpm_arch="x86_64"
    ;;
aarch64)
    rpm_arch="aarch64"
    ;;
*)
    echo "Unsupported architecture: $arch"
    exit 1
    ;;
esac

# Detect display server (default to wayland).
if [[ -n "${WAYLAND_DISPLAY:-}" ]]; then
    display_server="wayland"
elif [[ -n "${DISPLAY:-}" ]]; then
    display_server="x11"
else
    # Default to wayland for modern Fedora systems.
    display_server="wayland"
fi

echo "Detected: $rpm_arch with $display_server"

# Get the latest release URL.
echo "Fetching latest Rio release..."
release_url="https://api.github.com/repos/raphamorim/rio/releases/latest"
release_json=$(curl -s "$release_url")

# Extract version and download URL.
version=$(echo "$release_json" | grep -o '"tag_name": "[^"]*"' | head -1 | cut -d'"' -f4)
download_url=$(echo "$release_json" | grep -o "https://github.com/raphamorim/rio/releases/download/[^\"]*/rioterm-${version#v}-1.${rpm_arch}_${display_server}.rpm" | head -1)

if [[ -z "$download_url" ]]; then
    echo "Failed to find download URL for $rpm_arch with $display_server"
    exit 1
fi

echo "Found Rio $version"
echo "Downloading from $download_url..."

# Create temp directory and download.
tmpdir=$(mktemp -d)
trap 'rm -rf "$tmpdir"' EXIT

rpm_file="$tmpdir/rioterm.rpm"
curl -sL "$download_url" -o "$rpm_file"

# Install the RPM.
echo "Installing Rio..."
sudo dnf install -y "$rpm_file"

echo "Rio $version installed successfully."