#!/bin/bash
set -e

REPO="slowmove/applaunch"
INSTALL_DIR="/usr/local/bin"
FALLBACK_DIR="$HOME/.local/bin"
BINARY_NAME="applaunch"

echo "Installing applaunch..."
echo ""

OS=$(uname -s | tr '[:upper:]' '[:lower:]')
ARCH=$(uname -m)

case "$ARCH" in
    x86_64)
        ARCH="amd64"
        ;;
    aarch64|arm64)
        ARCH="arm64"
        ;;
    *)
        echo "Error: Unsupported architecture: $ARCH"
        echo "Supported architectures: x86_64 (amd64), aarch64 (arm64)"
        exit 1
        ;;
esac

case "$OS" in
    linux)
        ;;
    darwin)
        ;;
    *)
        echo "Error: Unsupported operating system: $OS"
        echo "Supported operating systems: Linux, macOS (Darwin)"
        exit 1
        ;;
esac

echo "Platform: $OS ($ARCH)"

echo "Fetching latest version..."
LATEST=$(curl -sL "https://api.github.com/repos/${REPO}/releases/latest" | \
    grep '"tag_name"' | cut -d'"' -f4)

if [ -z "$LATEST" ]; then
    echo "Error: Could not determine latest version"
    echo "Please visit https://github.com/${REPO}/releases to download manually"
    exit 1
fi

echo "Version: $LATEST"

FILENAME="${BINARY_NAME}_${OS}_${ARCH}"
TARBALL="${FILENAME}.tar.gz"
DOWNLOAD_URL="https://github.com/${REPO}/releases/download/${LATEST}/${TARBALL}"

echo "Downloading..."
TEMP_DIR=$(mktemp -d)
curl -sL "$DOWNLOAD_URL" -o "${TEMP_DIR}/${TARBALL}"

echo "Extracting..."
tar -xzf "${TEMP_DIR}/${TARBALL}" -C "$TEMP_DIR"

INSTALL_TARGET=""
if [ -w "$INSTALL_DIR" ]; then
    INSTALL_TARGET="${INSTALL_DIR}/${BINARY_NAME}"
else
    INSTALL_TARGET="${FALLBACK_DIR}/${BINARY_NAME}"
    mkdir -p "$FALLBACK_DIR"
fi

mv "${TEMP_DIR}/${BINARY_NAME}" "$INSTALL_TARGET"
chmod +x "$INSTALL_TARGET"

rm -rf "$TEMP_DIR"

echo ""
echo "✓ Installation complete!"
echo ""
echo "Installed to: $INSTALL_TARGET"
echo ""
echo "To run applaunch, run:"
echo "  $INSTALL_TARGET"
echo ""
echo "To update in the future:"
echo "  $INSTALL_TARGET --update"
echo ""
echo "For more information, visit:"
echo "  https://github.com/${REPO}"