#include "kernel.h"

#include "log.h"
#include "serial.h"

#include "asm_pic.h"
#include "multiboot.h"
#include "acpi.h"
#include "gdt.h"
#include "interrupts.h"

#include "mem.h"
#include "vmem.h"

//-- clean below headers --//
#include "sysfs.h"
#include "pci.h"
#include "e1000.h"
#include "pipe.h"
#include "testing/testing.h"
#include "ext2.h"
#include "apic.h"
#include "kernel/scheduler.h"

#include "driver/timer.h"
#include "driver/keyboard.h"
#include "driver/mouse.h"

#include "syscalls.h"
#include "fifo.h"
#include "asm_smp.h"
#include "asm_x86.h"
#include "ringbuffer.h"
#include "driver/screen.h"
#include "smp.h"

#include "fs/elf.h"
#include "kmalloc.h"
#include "driver/vesa.h"
#include "asm_pit.h"

/* F00L 0S Entry point (called directly from asm/multiboot.asm */
void kernel_main(uint32_t eax,uint32_t ebx)
{
    // -- COM1 -- //
    serial_init();
    klog("Communication Port (COM1) initialized.");

    // -- PR & VERSION BANNER -- //
    klog("======================================");
    klog("F00L- 0S / The Fool's Operating System");
    klog("(C) 2018 / Michal Idziorek (m.i@gmx.at)");
    klog("Compiled on: %s at %s",__DATE__,__TIME__);
    klog("Version: git-commit: %s",GIT_REVISION);
    klog("======================================");

    // -- DISABLE LEGACY PIC -- //
    klog("Remapping & Disabling Programmable Interrupt Controller (PIC) ...");
    fixme("io_wait & spurious interrupts");
    asm_pic_setup();

    // -- GET CONFIGS -- //
    klog("Read Multiboot Structures ...");
    multiboot_information *cfg_multiboot;
    cfg_multiboot=multiboot_read(eax, ebx,true); // true for silent
    // elf_multiboot_read(cfg_multiboot); // just show kernel section headers
    
    klog("Read Advanced Power Configuration Interface (ACPI) Structures ...");
    acpi_information cfg_acpi;    
    bool acpi_found=acpi_fill(&cfg_acpi);
    fixme("Try to read (legacy) multiprocessor mp strucutres as well (see: xxx/mp.c)");
    if(!acpi_found) kpanic("We Currently rely on ACPI Structures Sorry!");

    // -- GDT -- //
    klog("Global Descriptor Table (GDT) init ...");
    gdt_init();

    // -- IVT -- //
    klog("Interrupt Vector Table (IVT) init ...");
    interrupts_init(0x08);
    interrupts_install();
    fixme("register interrupt callback funcs (instead hardcoded dispatcher)");

    // -- PCI SCAN --/
    klog("PCI init ...");
    uint32_t e1000_addr=pci_init();
    klog("E1000 addr=0x%08X",e1000_addr);

    // -- MEMORY MANAGEMENT -- //
    klog("Memory init ... ");
    mem_init(cfg_multiboot);
    
    klog("Vritual Memory / Paging init ... ");
    fixme("do not disable anymore on context switching!");
    fixme("write convenneint management funcs as: mapCPU, mapKErnel, map USerspace..");
    fixme("move stack and guard with empty pages!");

    vmem_init(cfg_multiboot,&cfg_acpi,e1000_addr);

    struct pdirectory_struct *dir=vmem_kernel_dir();
    x86_set_page_directory(dir);
    x86_paging_enable();

    // -- MOUNTS -- //
    klog("Mounting ... ");
    ext2_dump_info(VMEM_EXT2_RAMIMAGE);
    ext2_mount("/");
    sysfs_mount("/sys/");

    // -- APIC -- //
    klog("Advanced Programmable Interrupt Controller (APIC) config ...");
    apic_init(&cfg_acpi);
    ioapic_config();

    // -- VESA -- //
    fixme("tell terminal syscall somehow if we are vga or textmode");
    klog("Video Electronics Standards Association (VESA) init ... ");
    
    // binfont has to fit in ONE ext2 block // 
    fixme("support binfonts spanning multiple blocks?");
    uint32_t inode= ext2_filename_to_inode(VMEM_EXT2_RAMIMAGE,VESA_FONT_PATH);
    uint32_t addr= ext2_inode_blockstart( VMEM_EXT2_RAMIMAGE,inode,0);
    vesa_init(cfg_multiboot,addr);

    // -- STD STREAMS -- //
    klog("Standard Streams init ...");
    fd_init_std_streams(0,cfg_multiboot->framebuffer_type!=2);

    // -- KB -- //
    klog("Keyboard init ...");
    keyboard_init(0); 

    // -- MOUSE -- //
    klog("Mouse init ...");
    mouse_init();

    // we wait till almost the end since the time will only start ticking after we
    // enable interrupts
    klog("Programmable Interval Timer (PIT) init ...");
    uint64_t unixtime=timer_init();
    klog("Unix Time = %u seconds",unixtime);

    // -- E1000 INIT (TODO: only if present!) --/
    klog("E1000 init ...");
    fixme("do not hardcode address and allow paging somehwere else");
    e1000_init(e1000_addr);

    klog("Symmetric Multi Processing (SMP) start ... ");
    smp_start_aps(&cfg_acpi);
}