/*
 * Copyright (c) 2018 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 <cstdlib>
#include <cstdint>
#include <cstring>
#include <malloc.h>

#include <switch.h>
#include <stratosphere.hpp>

#include "fsmitm_service.hpp"

#include "fsmitm_utils.hpp"

#include "setsys_mitm_service.hpp"

extern "C" {
    extern u32 __start__;

    u32 __nx_applet_type = AppletType_None;

    #define INNER_HEAP_SIZE 0x1000000
    size_t nx_inner_heap_size = INNER_HEAP_SIZE;
    char   nx_inner_heap[INNER_HEAP_SIZE];
    
    void __libnx_initheap(void);
    void __appInit(void);
    void __appExit(void);
}


void __libnx_initheap(void) {
	void*  addr = nx_inner_heap;
	size_t size = nx_inner_heap_size;

	/* Newlib */
	extern char* fake_heap_start;
	extern char* fake_heap_end;

	fake_heap_start = (char*)addr;
	fake_heap_end   = (char*)addr + size;
}

void __appInit(void) {
    Result rc;
    
    rc = smInitialize();
    if (R_FAILED(rc)) {
        fatalSimple(MAKERESULT(Module_Libnx, LibnxError_InitFail_SM));
    }
    
    rc = smMitMInitialize();
    if (R_FAILED(rc)) {
        fatalSimple(MAKERESULT(Module_Libnx, LibnxError_InitFail_SM));
    }
    
    rc = fsInitialize();
    if (R_FAILED(rc)) {
        fatalSimple(MAKERESULT(Module_Libnx, LibnxError_InitFail_FS));
    }
    CheckAtmosphereVersion();
}

void __appExit(void) {
    /* Cleanup services. */
    fsExit();
    smMitMExit();
    smExit();
}

struct FsMitmManagerOptions {
    static const size_t PointerBufferSize = 0x800;
    static const size_t MaxDomains = 0x10;
    static const size_t MaxDomainObjects = 0x4000;
};

using FsMitmManager = WaitableManager<FsMitmManagerOptions>;

void CreateSettingsMitMServer(void *arg) {
    auto server_manager = (FsMitmManager *)arg;
    
    Result rc;
    if (R_FAILED((rc = setsysInitialize()))) {
        fatalSimple(rc);
    }
    
    AddMitmServerToManager<SetSysMitmService>(server_manager, "set:sys", 5);
    
    svcExitThread();
}

int main(int argc, char **argv)
{
    Thread sd_initializer_thread = {0};
    Thread hid_initializer_thread = {0};
    Thread set_mitm_setup_thread = {0};
    consoleDebugInit(debugDevice_SVC);
        
    if (R_FAILED(threadCreate(&sd_initializer_thread, &Utils::InitializeSdThreadFunc, NULL, 0x4000, 0x15, 0))) {
        /* TODO: Panic. */
    }
    if (R_FAILED(threadStart(&sd_initializer_thread))) {
        /* TODO: Panic. */
    }
    
    if (R_FAILED(threadCreate(&hid_initializer_thread, &Utils::InitializeHidThreadFunc, NULL, 0x4000, 0x15, 0))) {
        /* TODO: Panic. */
    }
    if (R_FAILED(threadStart(&hid_initializer_thread))) {
        /* TODO: Panic. */
    }
    
    /* TODO: What's a good timeout value to use here? */
    auto server_manager = new FsMitmManager(1);
        
    /* Create fsp-srv mitm. */
    AddMitmServerToManager<FsMitmService>(server_manager, "fsp-srv", 61);
    
    /* Create set:sys mitm server, delayed until set:sys is available. */
    if (R_FAILED(threadCreate(&set_mitm_setup_thread, &CreateSettingsMitMServer, server_manager, 0x4000, 0x15, 0))) {
        /* TODO: Panic. */
    }
    if (R_FAILED(threadStart(&set_mitm_setup_thread))) {
        /* TODO: Panic. */
    }
            
    /* Loop forever, servicing our services. */
    server_manager->Process();
    
    delete server_manager;

    return 0;
}