#!/bin/bash
# build-deb.sh - Build Debian package for FeatherDDNS (runs inside container)
set -e

VERSION="${VERSION:-1.0.0}"
ARCH="amd64"
PACKAGE_NAME="featherddns"
MAINTAINER="Steven Tracey <steven@nevets.tech>"
HOMEPAGE="https://git.nevets.tech/Steven/FeatherDDNS"

BUILD_DIR="build/${PACKAGE_NAME}_${VERSION}_${ARCH}"

echo "Building ${PACKAGE_NAME} version ${VERSION}..."

# Clean and create build directory
rm -rf "$BUILD_DIR"
mkdir -p "$BUILD_DIR/DEBIAN"
mkdir -p "$BUILD_DIR/usr/bin"
mkdir -p "$BUILD_DIR/etc/featherddns"
mkdir -p "$BUILD_DIR/lib/systemd/system"

# Copy and strip binary
echo "Copying binary..."
cp "bin/FeatherDDNS" "$BUILD_DIR/usr/bin/featherddns"
strip "$BUILD_DIR/usr/bin/featherddns"
chmod 755 "$BUILD_DIR/usr/bin/featherddns"

# Copy config if exists
if [ -f "config.json.example" ]; then
    echo "Copying configuration..."
    cp "config.json.example" "$BUILD_DIR/etc/featherddns/config.json"
    chmod 644 "$BUILD_DIR/etc/featherddns/config.json"
fi

# Copy systemd service if exists
if [ -f "featherddns.service" ]; then
    echo "Copying systemd service..."
    cp "featherddns.service" "$BUILD_DIR/lib/systemd/system/"
    chmod 644 "$BUILD_DIR/lib/systemd/system/featherddns.service"
fi

# Create control file
cat > "$BUILD_DIR/DEBIAN/control" <<EOF
Package: ${PACKAGE_NAME}
Version: ${VERSION}
Section: net
Priority: optional
Architecture: ${ARCH}
Maintainer: ${MAINTAINER}
Depends: libc6
Homepage: ${HOMEPAGE}
Description: FeatherDDNS - Lightweight Dynamic DNS Server
 A lightweight dynamic DNS server for updating DNS records
 via HTTP API requests.
EOF

# Create conffiles if config exists
if [ -f "$BUILD_DIR/etc/featherddns/config.json" ]; then
    cat > "$BUILD_DIR/DEBIAN/conffiles" <<EOF
/etc/featherddns/config.json
EOF
    chmod 644 "$BUILD_DIR/DEBIAN/conffiles"
fi

# Create postinst script
cat > "$BUILD_DIR/DEBIAN/postinst" <<'EOF'
#!/bin/bash
set -e

case "$1" in
    configure)
        # Create featherddns user if it doesn't exist
        if ! getent passwd featherddns > /dev/null; then
            useradd --system --home-dir /var/lib/featherddns --shell /bin/false featherddns
        fi

        # Create directories
        mkdir -p /var/lib/featherddns
        mkdir -p /var/log/featherddns
        chown featherddns:featherddns /var/lib/featherddns
        chown featherddns:featherddns /var/log/featherddns

        # Reload systemd
        if [ -d /run/systemd/system ]; then
            systemctl daemon-reload >/dev/null || true
        fi
        ;;
esac

exit 0
EOF
chmod 755 "$BUILD_DIR/DEBIAN/postinst"

# Create prerm script
cat > "$BUILD_DIR/DEBIAN/prerm" <<'EOF'
#!/bin/bash
set -e

case "$1" in
    remove|upgrade)
        if [ -d /run/systemd/system ]; then
            systemctl stop featherddns.service >/dev/null 2>&1 || true
        fi
        ;;
esac

exit 0
EOF
chmod 755 "$BUILD_DIR/DEBIAN/prerm"

# Create postrm script
cat > "$BUILD_DIR/DEBIAN/postrm" <<'EOF'
#!/bin/bash
set -e

case "$1" in
    remove)
        if [ -d /run/systemd/system ]; then
            systemctl daemon-reload >/dev/null || true
        fi
        ;;
    purge)
        rm -rf /etc/featherddns
        rm -rf /var/lib/featherddns
        rm -rf /var/log/featherddns
        if [ -d /run/systemd/system ]; then
            systemctl daemon-reload >/dev/null || true
        fi
        ;;
esac

exit 0
EOF
chmod 755 "$BUILD_DIR/DEBIAN/postrm"

# Build the package
echo "Building package..."
dpkg-deb --build --root-owner-group "$BUILD_DIR"

# Move to dist directory
mkdir -p dist
mv "${BUILD_DIR}.deb" "dist/"

echo "Package built: dist/${PACKAGE_NAME}_${VERSION}_${ARCH}.deb"

# Run lintian check
if command -v lintian > /dev/null 2>&1; then
    echo "Running lintian check..."
    lintian "dist/${PACKAGE_NAME}_${VERSION}_${ARCH}.deb" || true
fi

echo "Done!"