#!/usr/bin/env bash
# Build the meshbay-client package: Electron app + .desktop launcher.
#
# Usage: ./build-client.sh [staging-dir] [--arm64]
#
# Requires Node >= 22. If not in PATH, set NODEJS_DIR=/opt/nodejs or similar.
set -euo pipefail

REPO="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
STAGING="${1:-/tmp/meshbay-build}"
ROOT="$STAGING/meshbay-client-root"
CLIENT="$REPO/packages/meshbay-client"

ARCH_FLAG=""
ELECTRON_ARCH="x64"
DEB_ARCH="amd64"
for arg in "$@"; do
    if [ "$arg" = "--arm64" ]; then
        ARCH_FLAG="--arm64"
        ELECTRON_ARCH="arm64"
        DEB_ARCH="arm64"
    fi
done

# Node.js version check
if [ -n "${NODEJS_DIR:-}" ]; then
    export PATH="$NODEJS_DIR/bin:$PATH"
fi
NODE_VER=$(node --version 2>/dev/null || echo "none")
echo "==> meshbay-client (Node $NODE_VER, arch=$ELECTRON_ARCH)"

if ! node --version >/dev/null 2>&1; then
    echo "!! Node.js not found. Set NODEJS_DIR or install Node >= 22." >&2
    exit 1
fi

NODE_MAJOR=$(node -e "process.stdout.write(String(process.versions.node.split('.')[0]))")
if [ "$NODE_MAJOR" -lt 22 ]; then
    echo "!! Node $NODE_VER is too old — need >= 22 for Electron" >&2
    exit 1
fi

rm -rf "$ROOT"
mkdir -p "$ROOT"

# --- Build the Electron app -----------------------------------------------
cd "$CLIENT"

echo "    npm ci"
npm ci --ignore-scripts 2>&1 | tail -3

echo "    approving + installing electron"
npm approve-scripts electron 2>/dev/null || true
node node_modules/electron/install.js 2>&1 | tail -1

echo "    syncing UI from hub package"
npm run sync-ui 2>&1 | tail -1

echo "    electron-builder --dir $ARCH_FLAG"
npx electron-builder --dir --linux $ARCH_FLAG 2>&1 | tail -5

# Determine the unpacked output directory
if [ "$ELECTRON_ARCH" = "arm64" ]; then
    UNPACKED="$CLIENT/dist/linux-arm64-unpacked"
else
    UNPACKED="$CLIENT/dist/linux-unpacked"
fi

[ -d "$UNPACKED" ] || { echo "!! electron-builder output not found at $UNPACKED" >&2; exit 1; }

# --- Assemble the package tree --------------------------------------------
echo "    assembling /opt/meshbay-client/"
mkdir -p "$ROOT/opt/meshbay-client"
cp -a "$UNPACKED"/* "$ROOT/opt/meshbay-client/"

# Rename the electron binary
if [ -f "$ROOT/opt/meshbay-client/meshbay-client" ]; then
    mv "$ROOT/opt/meshbay-client/meshbay-client" "$ROOT/opt/meshbay-client/meshbay"
elif [ -f "$ROOT/opt/meshbay-client/electron" ]; then
    mv "$ROOT/opt/meshbay-client/electron" "$ROOT/opt/meshbay-client/meshbay"
fi

# Symlink in PATH
mkdir -p "$ROOT/usr/bin"
ln -sf /opt/meshbay-client/meshbay "$ROOT/usr/bin/meshbay"

# --- Desktop launcher -----------------------------------------------------
mkdir -p "$ROOT/usr/share/applications"
cp "$REPO/packaging/desktop/meshbay.desktop" "$ROOT/usr/share/applications/"

# --- Icons ----------------------------------------------------------------
ICON_SRC="$CLIENT/build/icon.png"
if [ -f "$ICON_SRC" ]; then
    for size in 128 256 512; do
        ICON_DIR="$ROOT/usr/share/icons/hicolor/${size}x${size}/apps"
        mkdir -p "$ICON_DIR"
        if command -v convert >/dev/null 2>&1; then
            convert "$ICON_SRC" -resize "${size}x${size}" "$ICON_DIR/meshbay.png"
        elif command -v magick >/dev/null 2>&1; then
            magick "$ICON_SRC" -resize "${size}x${size}" "$ICON_DIR/meshbay.png"
        else
            # Fallback: copy the original at all sizes (better than no icon)
            cp "$ICON_SRC" "$ICON_DIR/meshbay.png"
        fi
    done
    echo "    icons installed"
else
    echo "    !! icon.png not found at $ICON_SRC — no icons" >&2
fi

# --- Firewall profile (Chromecast) ----------------------------------------
mkdir -p "$ROOT/usr/lib/firewalld/services"
cp "$REPO/packaging/firewall/firewalld/meshbay-cast.xml" \
   "$ROOT/usr/lib/firewalld/services/"

echo "==> meshbay-client staging ready at $ROOT ($DEB_ARCH)"