/*
 * Copyright (c) 2018-2019 Atmosphère-NX
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <mutex>
#include <algorithm>
#include <switch.h>
#include "setsys_mitm_service.hpp"
#include "setsys_firmware_version.hpp"
#include "setsys_settings_items.hpp"

void SetSysMitmService::PostProcess(IMitmServiceObject *obj, IpcResponseContext *ctx) {
    /* No commands need postprocessing. */    
}

Result SetSysMitmService::GetFirmwareVersion(OutPointerWithServerSize<SetSysFirmwareVersion, 0x1> out) {
    Result rc = VersionManager::GetFirmwareVersion(this->title_id, out.pointer);
    
    /* GetFirmwareVersion sanitizes these fields. */
    if (R_SUCCEEDED(rc)) {
        out.pointer->revision_major = 0;
        out.pointer->revision_minor = 0;
    }
        
    return rc;
}

Result SetSysMitmService::GetFirmwareVersion2(OutPointerWithServerSize<SetSysFirmwareVersion, 0x1> out) {
    return VersionManager::GetFirmwareVersion(this->title_id, out.pointer);
}

Result SetSysMitmService::GetSettingsItemValueSize(Out<u64> out_size, InPointer<char> in_name, InPointer<char> in_key) {
    char name[SET_MAX_NAME_SIZE] = {0};
    char key[SET_MAX_NAME_SIZE] = {0};
    
    Result rc = SettingsItemManager::ValidateName(in_name.pointer);
    if (R_FAILED(rc)) {
        return rc;
    }
    
    rc = SettingsItemManager::ValidateKey(in_key.pointer);
    if (R_FAILED(rc)) {
        return rc;
    }
    
    if (in_name.num_elements < SET_MAX_NAME_SIZE) {
        strncpy(name, in_name.pointer, in_name.num_elements);
    } else {
        strncpy(name, in_name.pointer, SET_MAX_NAME_SIZE-1);
    }
    
    if (in_key.num_elements < SET_MAX_NAME_SIZE) {
        strncpy(key, in_key.pointer, in_key.num_elements);
    } else {
        strncpy(key, in_key.pointer, SET_MAX_NAME_SIZE-1);
    }
    
    rc = SettingsItemManager::GetValueSize(name, key, out_size.GetPointer());
    if (R_FAILED(rc)) {
        rc = setsysGetSettingsItemValueSize(name, key, out_size.GetPointer());
    }

    return rc;
}

Result SetSysMitmService::GetSettingsItemValue(Out<u64> out_size, OutBuffer<u8> out_value, InPointer<char> in_name, InPointer<char> in_key) {
    char name[SET_MAX_NAME_SIZE] = {0};
    char key[SET_MAX_NAME_SIZE] = {0};
    
    Result rc = SettingsItemManager::ValidateName(in_name.pointer);
    if (R_FAILED(rc)) {
        return rc;
    }
    
    rc = SettingsItemManager::ValidateKey(in_key.pointer);
    if (R_FAILED(rc)) {
        return rc;
    }
    
    if (out_value.buffer == nullptr) {
        return ResultSettingsItemValueBufferNull;
    }
    
    if (in_name.num_elements < SET_MAX_NAME_SIZE) {
        strncpy(name, in_name.pointer, in_name.num_elements);
    } else {
        strncpy(name, in_name.pointer, SET_MAX_NAME_SIZE-1);
    }
    
    if (in_key.num_elements < SET_MAX_NAME_SIZE) {
        strncpy(key, in_key.pointer, in_key.num_elements);
    } else {
        strncpy(key, in_key.pointer, SET_MAX_NAME_SIZE-1);
    }
    
    rc = SettingsItemManager::GetValue(name, key, out_value.buffer, out_value.num_elements, out_size.GetPointer());
    
    if (R_FAILED(rc)) {
        rc = setsysGetSettingsItemValueFwd(this->forward_service.get(), name, key, out_value.buffer, out_value.num_elements, out_size.GetPointer());
    }

    return rc;
}

Result SetSysMitmService::GetEdid(OutPointerWithServerSize<SetSysEdid, 0x1> out) {
    return setsysGetEdidFwd(this->forward_service.get(), out.pointer);
}