/*
 * 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 <cstdlib>
#include <cstdint>
#include <cstring>
#include <malloc.h>

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

#include "dmnt_service.hpp"
#include "dmnt_cheat_service.hpp"
#include "dmnt_cheat_manager.hpp"
#include "dmnt_config.hpp"

extern "C" {
    extern u32 __start__;

    u32 __nx_applet_type = AppletType_None;

    #define INNER_HEAP_SIZE 0x80000
    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);

    /* Exception handling. */
    alignas(16) u8 __nx_exception_stack[0x1000];
    u64 __nx_exception_stack_size = sizeof(__nx_exception_stack);
    void __libnx_exception_handler(ThreadExceptionDump *ctx);
    u64 __stratosphere_title_id = TitleId_Dmnt;
    void __libstratosphere_exception_handler(AtmosphereFatalErrorContext *ctx);
}

void __libnx_exception_handler(ThreadExceptionDump *ctx) {
    StratosphereCrashHandler(ctx);
}


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;

    SetFirmwareVersionForLibnx();

    DoWithSmSession([&]() {
        rc = pmdmntInitialize();
        if (R_FAILED(rc)) {
            fatalSimple(rc);
        }

        rc = ldrDmntInitialize();
        if (R_FAILED(rc)) {
            fatalSimple(rc);
        }

        /* TODO: We provide this on every sysver via ro. Do we need a shim? */
        if (GetRuntimeFirmwareVersion() >= FirmwareVersion_300) {
            rc = roDmntInitialize();
            if (R_FAILED(rc)) {
                fatalSimple(rc);
            }
        }

        rc = nsdevInitialize();
        if (R_FAILED(rc)) {
            fatalSimple(rc);
        }

        rc = lrInitialize();
        if (R_FAILED(rc)) {
            fatalSimple(rc);
        }

        rc = setInitialize();
        if (R_FAILED(rc)) {
            fatalSimple(rc);
        }

        rc = setsysInitialize();
        if (R_FAILED(rc)) {
            fatalSimple(rc);
        }

        rc = hidInitialize();
        if (R_FAILED(rc)) {
            fatalSimple(rc);
        }

        rc = fsInitialize();
        if (R_FAILED(rc)) {
            fatalSimple(rc);
        }
    });

    rc = fsdevMountSdmc();
    if (R_FAILED(rc)) {
        fatalSimple(rc);
    }

    CheckAtmosphereVersion(CURRENT_ATMOSPHERE_VERSION);
}

void __appExit(void) {
    /* Cleanup services. */
    fsdevUnmountAll();
    fsExit();
    hidExit();
    setsysExit();
    setExit();
    lrExit();
    nsdevExit();
    roDmntExit();
    ldrDmntExit();
    pmdmntExit();
}

int main(int argc, char **argv)
{
    consoleDebugInit(debugDevice_SVC);

    /* Initialize configuration manager. */
    DmntConfigManager::RefreshConfiguration();

    /* Start cheat manager. */
    DmntCheatManager::InitializeCheatManager();

    /* Nintendo uses four threads. Add a fifth for our cheat service. */
    auto server_manager = new WaitableManager(5);

    /* Create services. */

    /* TODO: Implement rest of dmnt:- in ams.tma development branch. */
    /* server_manager->AddWaitable(new ServiceServer<DebugMonitorService>("dmnt:-", 4)); */


    server_manager->AddWaitable(new ServiceServer<DmntCheatService>("dmnt:cht", 1));

    /* Loop forever, servicing our services. */
    server_manager->Process();

    delete server_manager;

    return 0;
}