#!/bin/bash
set -e

VERSION="0.3.2"
APP_NAME="studioE5"
BIN_NAME="studioE5-agent"
LDFLAGS="-X main.version=${VERSION}"

# On Windows, build a GUI binary so no console window opens on double-click.
WIN_LDFLAGS="${LDFLAGS} -H windowsgui"

echo "Building ${APP_NAME} Agent v${VERSION}..."

export PATH=$PATH:/usr/local/go/bin

GOOS=windows GOARCH=amd64 go build -ldflags "${WIN_LDFLAGS}" -o ${BIN_NAME}.exe .
echo "  ${BIN_NAME}.exe (Windows amd64)"
cp ${BIN_NAME}.exe "${BIN_NAME}-v${VERSION}.exe"
echo "  ${BIN_NAME}-v${VERSION}.exe (Windows amd64)"

GOOS=linux GOARCH=amd64 go build -ldflags "${LDFLAGS}" -o ${BIN_NAME} .
echo "  ${BIN_NAME} (Linux amd64)"
cp ${BIN_NAME} "${BIN_NAME}-v${VERSION}"
echo "  ${BIN_NAME}-v${VERSION} (Linux amd64)"

# macOS build requires CGO for the systray menu; skip gracefully if unavailable.
if GOOS=darwin GOARCH=amd64 CGO_ENABLED=1 go build -ldflags "${LDFLAGS}" -o ${BIN_NAME}-mac . 2>/dev/null; then
    echo "  ${BIN_NAME}-mac (macOS amd64)"
    cp ${BIN_NAME}-mac "${BIN_NAME}-v${VERSION}-mac"
    echo "  ${BIN_NAME}-v${VERSION}-mac (macOS amd64)"
    MAC_BUILT=1
else
    echo "  ${BIN_NAME}-mac (macOS amd64) - skipped, CGO required for systray"
    MAC_BUILT=0
fi

# Build Windows distribution zip (agent + Tailscale binaries)
ZIP_NAME="${BIN_NAME}-v${VERSION}-windows.zip"
if [ -d "tailscale-bin/windows" ]; then
    python3 - <<PY
import zipfile, os
with zipfile.ZipFile("${ZIP_NAME}", 'w', zipfile.ZIP_DEFLATED) as zf:
    zf.write("${BIN_NAME}.exe", "${BIN_NAME}.exe")
    for f in ["tailscale.exe", "tailscaled.exe", "wintun.dll"]:
        zf.write(f"tailscale-bin/windows/{f}", f"tailscale-bin/windows/{f}")
    readme = r"""${APP_NAME} Agent - Windows
=======================
1. Extract this archive to a folder (e.g. C:\${APP_NAME}-agent).
2. Create a data folder (e.g. C:\${APP_NAME}-agent\data).
3. Create the config file data\${BIN_NAME}-config.json:
   {
     "server": "wss://studioe5.edudeploy.com/api/websocket",
     "headscale_url": "https://headscale.studioe5.edudeploy.com",
     "headscale_auth_key": "YOUR_PREAUTH_KEY",
     "node_id": "YOUR_NODE_ID",
     "data_dir": "C:\\${APP_NAME}-agent\\data"
   }
4. Run the agent:
   ${BIN_NAME}.exe -no-tray -data-dir C:\${APP_NAME}-agent\data

Tailscale binaries (tailscale.exe, tailscaled.exe, wintun.dll) are bundled
in tailscale-bin\windows\ and used automatically by the agent.
"""
    zf.writestr("README-Windows.txt", readme)
print(f"  ${ZIP_NAME}")
PY
else
    echo "  Warning: tailscale-bin/windows not found, run ./download-tailscale-bins.sh first"
fi

# Copy versioned binaries to server/public so the dashboard can serve them
SERVER_PUBLIC="../server/public"
if [ -d "${SERVER_PUBLIC}" ]; then
    cp "${BIN_NAME}-v${VERSION}" "${SERVER_PUBLIC}/${BIN_NAME}-v${VERSION}"
    cp "${BIN_NAME}-v${VERSION}.exe" "${SERVER_PUBLIC}/${BIN_NAME}-v${VERSION}.exe"
    if [ "$MAC_BUILT" = "1" ]; then
        cp "${BIN_NAME}-v${VERSION}-mac" "${SERVER_PUBLIC}/${BIN_NAME}-v${VERSION}-mac"
    fi
    if [ -f "${ZIP_NAME}" ]; then
        cp "${ZIP_NAME}" "${SERVER_PUBLIC}/${ZIP_NAME}"
    fi
    echo "  Copied versioned binaries to ${SERVER_PUBLIC}"
fi

echo ""
echo "Download URLs (once served by Caddy):"
echo "  https://studioe5.edudeploy.com/${BIN_NAME}-v${VERSION}.exe"
echo "  https://studioe5.edudeploy.com/${ZIP_NAME}"
echo "Done."