# Kernel module package for hid-tmff2 - Thrustmaster force feedback driver
#
# This spec file follows Fedora packaging guidelines for kernel modules:
# https://fedoraproject.org/wiki/Packaging:KernelModules
#
# To build for a specific kernel version:
#   rpmbuild -ba --define 'kernel_version X.Y.Z-NNN.fcXX.x86_64' hid-tmff2-kmod.spec

%global kmod_name hid-tmff2
%global debug_package %{nil}

# Define paths if not already defined by systemd macros
%{!?_udevrulesdir:%global _udevrulesdir /usr/lib/udev/rules.d}

# Allow building for specific kernel version, default to current
%{!?kernel_version:%global kernel_version %(uname -r)}

# Extract major kernel version for fuzzy matching (e.g., 6.18.7 -> 6.18)
%global kver_major %(echo %{kernel_version} | cut -d. -f1-2)

Name:           %{kmod_name}-kmod
Version:        0.82
Release:        1%{?dist}
Summary:        Kernel module for Thrustmaster T300RS, T248 and other racing wheels

License:        GPL-2.0-or-later
URL:            https://github.com/Kimplul/hid-tmff2

# For COPR "make srpm": .copr/Makefile creates these tarballs with submodules
# For local builds: run ./build-rpm.sh to generate tarball with submodules
Source0:        %{kmod_name}-%{version}.tar.gz
Source1:        hid-tminit.tar.gz

BuildRequires:  kernel-devel >= %{kver_major}
BuildRequires:  kernel-headers
BuildRequires:  make
BuildRequires:  gcc
BuildRequires:  elfutils-libelf-devel

# Weak dependency: most users will want this
Recommends:     linuxconsoletools

Requires(post): %{_sbindir}/depmod
Requires(postun): %{_sbindir}/depmod

# Provide modalias for hardware auto-loading
Supplements:    modalias(hid:b0003g*v0000044Fp0000B65D)
Supplements:    modalias(hid:b0003g*v0000044Fp0000B664)
Supplements:    modalias(hid:b0003g*v0000044Fp0000B66[9DEF])
Supplements:    modalias(hid:b0003g*v0000044Fp0000B689)
Supplements:    modalias(hid:b0003g*v0000044Fp0000B69C)

%description
A Linux kernel module for Thrustmaster T300RS, T248, and experimental support
for TX, T128, T598, TS-PC and TS-XW racing wheels.

This package provides force feedback support and advanced features for supported
Thrustmaster racing wheels. The driver includes wheel initialization modules
(hid-tminit) and the main force feedback driver (hid-tmff-new).

%prep
# Extract main source
%autosetup -n %{kmod_name}-%{version}

# Extract hid-tminit submodule (Source1)
mkdir -p deps
tar -xzf %{SOURCE1} -C deps

# Verify submodule is in place
if [ ! -f deps/hid-tminit/Makefile ]; then
    echo "ERROR: hid-tminit submodule not found after extraction"
    exit 1
fi

%build
# Find kernel source directory - prefer exact match, fall back to latest compatible
KDIR="/usr/src/kernels/%{kernel_version}"
if [ ! -d "${KDIR}" ]; then
    # Fall back to latest available kernel-devel with matching major version
    KDIR=$(ls -1d /usr/src/kernels/%{kver_major}* 2>/dev/null | sort -V | tail -1)
    if [ -z "${KDIR}" ] || [ ! -d "${KDIR}" ]; then
        # Try even broader match - just find any kernel-devel
        KDIR=$(ls -1d /usr/src/kernels/* 2>/dev/null | sort -V | tail -1)
        if [ -z "${KDIR}" ] || [ ! -d "${KDIR}" ]; then
            echo "ERROR: No kernel-devel package found"
            exit 1
        fi
    fi
    echo "WARNING: Exact kernel-devel for %{kernel_version} not found"
    echo "         Using $(basename ${KDIR}) instead"
fi

echo "Building for kernel: $(basename ${KDIR})"

# Reproducible build flags
# Use fixed timestamp from spec file for reproducibility
export SOURCE_DATE_EPOCH=$(date -d '2025-02-06' +%s)
export KBUILD_BUILD_TIMESTAMP='Thu Feb  6 00:00:00 UTC 2025'
export KBUILD_BUILD_USER='builder'
export KBUILD_BUILD_HOST='localhost'

# Build all modules
make KDIR="${KDIR}" \
     V=1 \
     all

# Record the actual kernel version we built for
echo "$(basename ${KDIR})" > .built_kernel_version

%install
# Get the kernel version we actually built for
BUILT_KERNEL=$(cat .built_kernel_version)
echo "Installing modules for kernel: ${BUILT_KERNEL}"

# Install kernel modules to standard location
install -d %{buildroot}/lib/modules/${BUILT_KERNEL}/extra/%{kmod_name}
install -m 0644 hid-tmff-new.ko \
    %{buildroot}/lib/modules/${BUILT_KERNEL}/extra/%{kmod_name}/
install -m 0644 deps/hid-tminit/hid-tminit-new.ko \
    %{buildroot}/lib/modules/${BUILT_KERNEL}/extra/%{kmod_name}/
install -m 0644 deps/hid-tminit/usb-tminit-new.ko \
    %{buildroot}/lib/modules/${BUILT_KERNEL}/extra/%{kmod_name}/

# Install udev rules
install -D -m 0644 udev/99-thrustmaster.rules \
    %{buildroot}%{_udevrulesdir}/99-thrustmaster.rules
install -D -m 0644 udev/71-thrustmaster-steamdeck.rules \
    %{buildroot}%{_udevrulesdir}/71-thrustmaster-steamdeck.rules

# Install modprobe configuration
install -D -m 0644 /dev/stdin \
    %{buildroot}%{_sysconfdir}/modprobe.d/hid-tmff2.conf << 'EOF'
# Blacklist the upstream hid-thrustmaster driver to prevent conflicts
# The hid-tmff-new driver provides enhanced functionality
blacklist hid_thrustmaster
EOF

# Store kernel version for post-install scripts
install -D -m 0644 /dev/stdin \
    %{buildroot}/lib/modules/${BUILT_KERNEL}/extra/%{kmod_name}/.rpm_kver << EOF
${BUILT_KERNEL}
EOF

%files
%license LICENSE
%doc README.md
/lib/modules/*/extra/%{kmod_name}/
%{_udevrulesdir}/99-thrustmaster.rules
%{_udevrulesdir}/71-thrustmaster-steamdeck.rules
%config(noreplace) %{_sysconfdir}/modprobe.d/hid-tmff2.conf

%post
# Update module dependencies
for kmod_dir in /lib/modules/*/extra/%{kmod_name}; do
    if [ -f "${kmod_dir}/.rpm_kver" ]; then
        kver=$(cat "${kmod_dir}/.rpm_kver")
        if [ -d "/lib/modules/${kver}" ]; then
            /sbin/depmod -a "${kver}" > /dev/null 2>&1 || :
        fi
    fi
done

%postun
# Update module dependencies after removal
if [ "$1" -eq 0 ]; then
    # Package removal (not upgrade)
    for kdir in /lib/modules/*; do
        if [ -d "${kdir}" ]; then
            kver=$(basename "${kdir}")
            /sbin/depmod -a "${kver}" > /dev/null 2>&1 || :
        fi
    done
fi

%changelog
* Thu Feb 06 2025 Build System <builder@localhost> - 0.82-1
- Initial kmod package for hid-tmff2
- Support for T300RS, T248, TX, T128, T598, TS-PC, TS-XW wheels
- Includes hid-tminit dependency modules (hid-tminit-new, usb-tminit-new)
- Provides udev rules for automatic wheel detection
- Blacklists conflicting hid_thrustmaster driver
- Implements reproducible build practices