#include <efi.h>
#include <efilib.h>

// -------------------------------
// HDGL Lattice Configuration
// -------------------------------
#define NUM_CHANNELS 64
#define PAGE_SIZE 4096

typedef struct {
    UINT8 buffer[PAGE_SIZE];
    CHAR16* name;
    BOOLEAN active;
} HDGLChannel;

HDGLChannel channels[NUM_CHANNELS];

// -------------------------------
// Simple harmonic fusion demo
// -------------------------------
void harmonic_fusion() {
    for (int i = 0; i < NUM_CHANNELS-1; i++) {
        for (int j = 0; j < PAGE_SIZE; j++) {
            UINT16 fused = channels[i].buffer[j] + channels[i+1].buffer[j];
            channels[i].buffer[j] = (UINT8)((fused/2) % 256);
        }
    }
}

// -------------------------------
// Map kernel/initramfs pages
// -------------------------------
void map_pages(UINT8* data, UINTN size) {
    UINTN pages = size / PAGE_SIZE + (size % PAGE_SIZE != 0);
    for (UINTN i=0; i<pages; i++) {
        UINT8* page = data + i*PAGE_SIZE;
        HDGLChannel* ch = &channels[i % NUM_CHANNELS];
        for (UINTN j=0; j<PAGE_SIZE; j++) {
            ch->buffer[j] = page[j];
        }
        ch->active = TRUE;
    }
}

// -------------------------------
// Entry Point
// -------------------------------
EFI_STATUS
EFIAPI
efi_main(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable) {
    InitializeLib(ImageHandle, SystemTable);
    Print(L"HDGL Live Bootloader Starting...\n");

    // Initialize channels
    for (int i=0; i<NUM_CHANNELS; i++) {
        channels[i].active = TRUE;
        channels[i].name = L"HDGL";
        for (int j=0; j<PAGE_SIZE; j++)
            channels[i].buffer[j] = 0;
    }

    Print(L"Channels initialized.\n");

    // Example: Load precompiled kernel/initramfs bytes embedded in EFI
    extern UINT8 kernel_start[];
    extern UINTN kernel_size;
    extern UINT8 initramfs_start[];
    extern UINTN initramfs_size;

    Print(L"Mapping kernel pages...\n");
    map_pages(kernel_start, kernel_size);

    Print(L"Mapping initramfs pages...\n");
    map_pages(initramfs_start, initramfs_size);

    Print(L"Performing harmonic fusion...\n");
    harmonic_fusion();

    Print(L"HDGL lattice ready. Handing off to kernel...\n");

    // TODO: Implement EFI ExitBootServices + jump to kernel
    // Currently placeholder for live boot handoff
    Print(L"Boot complete (placeholder).\n");

    while (1);
    return EFI_SUCCESS;
}
