/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#define LOG_TAG "fingerprint@2.3-service.bangkk"

#include "BiometricsFingerprint.h"

#include <android-base/file.h>
#include <android-base/logging.h>
#include <fcntl.h>
#include <poll.h>
#include <sys/stat.h>
#include <sys/ioctl.h>

#include <chrono>
#include <cmath>
#include <fstream>
#include <thread>

#include <display/drm/sde_drm.h>

enum HBM_STATE {
    OFF = 0,
    ON = 2
};

void setHbmState(int state) {
    struct panel_param_info param_info;
    int32_t node = open("/dev/dri/card0", O_RDWR);
    int32_t ret = 0;

    if (node < 0) {
        LOG(ERROR) << "Failed to get card0!";
        return;
    }

    param_info.param_idx = PARAM_HBM;
    param_info.value = state;

    ret = ioctl(node, DRM_IOCTL_SET_PANEL_FEATURE, &param_info);
    if (ret < 0) {
        LOG(ERROR) << "IOCTL call failed with ret = " << ret;
    } else {
        LOG(INFO) << "HBM state set successfully. New state: " << state;
    }

    close(node);
}

namespace android {
namespace hardware {
namespace biometrics {
namespace fingerprint {
namespace V2_3 {
namespace implementation {

BiometricsFingerprint::BiometricsFingerprint() {
    biometrics_2_1_service = IBiometricsFingerprint_2_1::getService();
    rbs_4_0_service = IBiometricsFingerprintRbs::getService();
}

Return<uint64_t> BiometricsFingerprint::setNotify(
    const sp<IBiometricsFingerprintClientCallback> &clientCallback) {
    return biometrics_2_1_service->setNotify(clientCallback);
}

Return<uint64_t> BiometricsFingerprint::preEnroll() {
    return biometrics_2_1_service->preEnroll();
}

Return<RequestStatus> BiometricsFingerprint::enroll(const hidl_array<uint8_t, 69> &hat,
                                                    uint32_t gid, uint32_t timeoutSec) {
    return biometrics_2_1_service->enroll(hat, gid, timeoutSec);
}

Return<RequestStatus> BiometricsFingerprint::postEnroll() {
    return biometrics_2_1_service->postEnroll();
}

Return<uint64_t> BiometricsFingerprint::getAuthenticatorId() {
    return biometrics_2_1_service->getAuthenticatorId();
}

Return<RequestStatus> BiometricsFingerprint::cancel() {
    setHbmState(OFF);
    return biometrics_2_1_service->cancel();
}

Return<RequestStatus> BiometricsFingerprint::enumerate() {
    return biometrics_2_1_service->enumerate();
}

Return<RequestStatus> BiometricsFingerprint::remove(uint32_t gid, uint32_t fid) {
    return biometrics_2_1_service->remove(gid, fid);
}

Return<RequestStatus> BiometricsFingerprint::setActiveGroup(uint32_t gid,
                                                            const hidl_string &storePath) {
    return biometrics_2_1_service->setActiveGroup(gid, storePath);
}

Return<RequestStatus> BiometricsFingerprint::authenticate(uint64_t operationId, uint32_t gid) {
    setHbmState(OFF);
    return biometrics_2_1_service->authenticate(operationId, gid);
}

Return<bool> BiometricsFingerprint::isUdfps(uint32_t) {
    return true;
}

Return<void> BiometricsFingerprint::onFingerDown(uint32_t, uint32_t, float, float) {
    setHbmState(ON);
    extraApiWrapper(101);

    std::thread([this]() {
        std::this_thread::sleep_for(std::chrono::milliseconds(200));
        BiometricsFingerprint::onFingerUp();
    }).detach();

    return Void();
}

Return<void> BiometricsFingerprint::onFingerUp() {
    setHbmState(OFF);
    extraApiWrapper(102);
    return Void();
}

Return<void> BiometricsFingerprint::extraApiWrapper(int cidValue) {
    int cid[1] = {cidValue};

    // Create a std::vector<uint8_t> to store the data from 'cid'
    std::vector<uint8_t> cid_data(reinterpret_cast<uint8_t*>(cid), reinterpret_cast<uint8_t*>(cid) + sizeof(cid));

    // Create the hidl_vec<uint8_t> from the std::vector<uint8_t>
    ::android::hardware::hidl_vec<uint8_t> hidl_cid = cid_data;

    // Call extra_api with the correct input buffer and an empty lambda callback
    rbs_4_0_service->extra_api(7, hidl_cid, [](const ::android::hardware::hidl_vec<uint8_t>&){});

    return Void();
}

}  // namespace implementation
}  // namespace V2_3
}  // namespace fingerprint
}  // namespace biometrics
}  // namespace hardware
}  // namespace android