/*
 * Copyright (c) 2018-2020 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 <stratosphere.hpp>
#include "ldr_development_manager.hpp"
#include "ldr_loader_service.hpp"

extern "C" {
    extern u32 __start__;

    u32 __nx_applet_type = AppletType_None;
    u32 __nx_fs_num_sessions = 1;

    #define INNER_HEAP_SIZE 0x8000
    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[ams::os::MemoryPageSize];
    u64 __nx_exception_stack_size = sizeof(__nx_exception_stack);
    void __libnx_exception_handler(ThreadExceptionDump *ctx);
}

namespace ams {

    ncm::ProgramId CurrentProgramId = ncm::SystemProgramId::Loader;

    namespace result {

        bool CallFatalOnResultAssertion = false;

    }

}

using namespace ams;

void __libnx_exception_handler(ThreadExceptionDump *ctx) {
    ams::CrashHandler(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) {
    hos::InitializeForStratosphere();

    /* Initialize services we need. */
    sm::DoWithSession([&]() {
        R_ABORT_UNLESS(fsInitialize());
        lr::Initialize();
        R_ABORT_UNLESS(fsldrInitialize());
        spl::Initialize();
    });

    ams::CheckApiVersion();
}

void __appExit(void) {
    /* Cleanup services. */
    spl::Finalize();
    fsldrExit();
    lr::Finalize();
    fsExit();
}

namespace {

    struct ServerOptions {
        static constexpr size_t PointerBufferSize = 0x400;
        static constexpr size_t MaxDomains = 0;
        static constexpr size_t MaxDomainObjects = 0;
    };

    constexpr sm::ServiceName ProcessManagerServiceName = sm::ServiceName::Encode("ldr:pm");
    constexpr size_t          ProcessManagerMaxSessions = 1;

    constexpr sm::ServiceName ShellServiceName = sm::ServiceName::Encode("ldr:shel");
    constexpr size_t          ShellMaxSessions = 3;

    constexpr sm::ServiceName DebugMonitorServiceName = sm::ServiceName::Encode("ldr:dmnt");
    constexpr size_t          DebugMonitorMaxSessions = 3;

    /* ldr:pm, ldr:shel, ldr:dmnt. */
    constexpr size_t NumServers  = 3;
    constexpr size_t MaxSessions = ProcessManagerMaxSessions + ShellMaxSessions + DebugMonitorMaxSessions + 1;
    sf::hipc::ServerManager<NumServers, ServerOptions, MaxSessions> g_server_manager;

}

int main(int argc, char **argv)
{
    /* Disable auto-abort in fs operations. */
    fs::SetEnabledAutoAbort(false);

    /* Set thread name. */
    os::SetThreadNamePointer(os::GetCurrentThread(), AMS_GET_SYSTEM_THREAD_NAME(ldr, Main));
    AMS_ASSERT(os::GetThreadPriority(os::GetCurrentThread()) == AMS_GET_SYSTEM_THREAD_PRIORITY(ldr, Main));

    /* Configure development. */
    /* NOTE: Nintendo really does call the getter function three times instead of caching the value. */
    ldr::SetDevelopmentForAcidProductionCheck(spl::IsDevelopment());
    ldr::SetDevelopmentForAntiDowngradeCheck(spl::IsDevelopment());
    ldr::SetDevelopmentForAcidSignatureCheck(spl::IsDevelopment());

    /* Add services to manager. */
    R_ABORT_UNLESS((g_server_manager.RegisterServer<ldr::impl::IProcessManagerInterface, ldr::LoaderService>(ProcessManagerServiceName, ProcessManagerMaxSessions)));
    R_ABORT_UNLESS((g_server_manager.RegisterServer<ldr::impl::IShellInterface,          ldr::LoaderService>(ShellServiceName, ShellMaxSessions)));
    R_ABORT_UNLESS((g_server_manager.RegisterServer<ldr::impl::IDebugMonitorInterface,   ldr::LoaderService>(DebugMonitorServiceName, DebugMonitorMaxSessions)));

    /* Loop forever, servicing our services. */
    g_server_manager.LoopProcess();

	return 0;
}