#include "acpi/RSDT.h"
#include "assert.h"
#include "bootboot.h"
#include "cpu/CPU.h"
#include "debug.h"
#include "gdt/GDT.h"
#include "init/Init.h"
#include "init/InitRD.h"
#include "interrupts/IDT.h"
#include "interrupts/Install.h"
#include "interrupts/Interrupts.h"
#include "io/PIC.h"
#include "io/Serial.h"
#include "log/Log.h"
#include "memory/KernelHeap.h"
#include "panic/hang.h"
#include "render/BBRenderer.h"
#include "render/Draw.h"
#include "render/TextRenderer.h"
#include "scheduling/PIT.h"
#include "std/stdio.h"
#include "std/stdlib.h"
#include "std/string.h"
#include "utils.h"

extern BOOTBOOT bootboot;

extern "C" void _start()
{
    Init::check_magic();
    Init::disable_smp(); // Put all other cores except the bootstrap one in an infinite loop
    Debug::DebugStatus::the()->Init();
    Debug::DebugStatus::the()->StartBootStage(Color::White);
    Init::early_init();
    Debug::DebugStatus::the()->PassBootStage(Color::White);

    InitRD::for_each(
        [](InitRD::File& f) { printf("%s: %d bytes, starts with 0x%x%x\n", f.name, f.size, *(uint64_t*)f.addr); });

    kinfoln("Hello World!");

    Debug::DebugStatus::the()->StartBootStage(Color::Gray);
    GDT::load();
    Debug::DebugStatus::the()->PassBootStage(Color::Gray);

    kinfoln("Loaded GDT");

    Debug::DebugStatus::the()->StartBootStage(Color::Cyan);
    Interrupts::install();
    Debug::DebugStatus::the()->PassBootStage(Color::Cyan);

    Debug::DebugStatus::the()->StartBootStage(Color::Blue);
    IDT::load();
    Debug::DebugStatus::the()->PassBootStage(Color::Blue);

    kinfoln("Loaded IDT");

    Debug::DebugStatus::the()->StartBootStage(Color::Green);
    PIC::remap();
    PIC::enable_master(0b11111100); // enable keyboard and PIT
    PIC::enable_slave(0b11111111);
    Debug::DebugStatus::the()->PassBootStage(Color::Green);

    kinfoln("Prepared PIC");

    Debug::DebugStatus::the()->StartBootStage(Color::Magenta);
    PIT::initialize(100); // 100 times per second
    Debug::DebugStatus::the()->PassBootStage(Color::Magenta);

    kinfoln("Prepared PIT");

    Debug::DebugStatus::the()->StartBootStage(Color::Yellow);
    Interrupts::enable();
    Debug::DebugStatus::the()->PassBootStage(Color::Yellow);

    kinfoln("Interrupts enabled");

    Debug::DebugStatus::the()->StartBootStage(Color{0x33, 0x33, 0x00, 0xFF});
    ACPI::SDTHeader* rootSDT = ACPI::GetRSDTOrXSDT();
    bool isXSDT = false;
    if (strncmp(rootSDT->Signature, "XSDT", 4) != 0)
    {
        if (strncmp(rootSDT->Signature, "RSDT", 4) != 0)
        {
            kerrorln("Invalid RootSDT signature");
            Debug::DebugStatus::the()->FailBootStage();
            while (1) halt();
        }
    }
    else
        isXSDT = true;
    if (ACPI::ValidateSDTHeader(rootSDT))
    {
        kinfoln(isXSDT ? "XSDT is valid" : "RSDT is valid");
        Debug::DebugStatus::the()->PassBootStage(Color{0x33, 0x33, 0x00, 0xFF});
    }
    else
    {
        kinfoln(isXSDT ? "Invalid XSDT :(" : "Invalid RSDT :(");
        Debug::DebugStatus::the()->FailBootStage();
        while (1) halt();
    }

    Debug::DebugStatus::the()->StartBootStage(Color{0x00, 0x66, 0xCC, 0xFF});
    ACPI::SDTHeader* fadt = (ACPI::SDTHeader*)ACPI::FindTable(rootSDT, "FACP");
    if (!fadt)
    {
        kerrorln("FADT not found");
        Debug::DebugStatus::the()->FailBootStage();
        while (1) halt();
    }
    if (strncmp(fadt->Signature, "FACP", 4) != 0)
    {
        kerrorln("Invalid FADT signature");
        Debug::DebugStatus::the()->FailBootStage();
        while (1) halt();
    }
    else
    {
        if (ACPI::ValidateSDTHeader(fadt))
        {
            kinfoln("FADT is valid");
            Debug::DebugStatus::the()->PassBootStage(Color{0x00, 0x66, 0xCC, 0xFF});
        }
        else
        {
            kinfoln("Invalid FADT :(");
            Debug::DebugStatus::the()->FailBootStage();
            while (1) halt();
        }
    }

    while (1) halt();
loop:
    goto loop;
}