#include <string>

#include <coreinit/debug.h>
#include <coreinit/memory.h>
#include <nn/act.h>
#include <padscore/kpad.h>
#include <SDL2/SDL_ttf.h>
#include <vpad/input.h>

#include <fa-solid-900_ttf.h>
#include <ter-u32b_bdf.h>
#include "input.hpp"
#include "main.hpp"
#include "unlink.hpp"


void draw_background(int r, int g, int b, int a) {
    SDL_SetRenderDrawColor(renderer, r, g, b, a);
    SDL_RenderClear(renderer);
}

void draw_rectangle(int x, int y, int w, int h, int r, int g, int b, int a) {
    SDL_Rect rect = {x, y, w, h};
    SDL_SetRenderDrawColor(renderer, r, g, b, a);
    SDL_RenderFillRect(renderer, &rect);
}

void draw_text(const char* text, int x, int y, int size, SDL_Color color = {255, 255, 255, 255}) {
    void* font_data = nullptr;
    uint32_t font_size = 0;
    OSGetSharedData(OS_SHAREDDATATYPE_FONT_STANDARD, 0, &font_data, &font_size);

    TTF_Font* font = TTF_OpenFontRW(SDL_RWFromMem((void*)font_data, font_size), 1, size);
    if (font == NULL) {
        return;
    }

    SDL_Surface* surface = TTF_RenderText_Blended(font, text, color);
    if (surface == NULL) {
        TTF_CloseFont(font);
        return;
    }

    SDL_Texture* texture = SDL_CreateTextureFromSurface(renderer, surface);
    if (texture == NULL) {
        SDL_FreeSurface(surface);
        TTF_CloseFont(font);
        return;
    }

    SDL_Rect rect = {x, y, surface->w, surface->h};
    SDL_RenderCopy(renderer, texture, NULL, &rect);

    SDL_DestroyTexture(texture);
    SDL_FreeSurface(surface);
    TTF_CloseFont(font);
}

int get_text_width(const char* text, int size) {
    void* font_data = nullptr;
    uint32_t font_size = 0;
    OSGetSharedData(OS_SHAREDDATATYPE_FONT_STANDARD, 0, &font_data, &font_size);

    TTF_Font* font = TTF_OpenFontRW(SDL_RWFromMem((void*)font_data, font_size), 1, size);
    if (font == NULL) {
        return 0;
    }

    int width = 0;
    int height = 0;
    TTF_SizeText(font, text, &width, &height);

    TTF_CloseFont(font);
    return width;
}

void draw_screen_bars() {
    draw_rectangle(0, 0, 1920, 90, 125, 0, 125, 255);
    draw_text("Wii U Account Swap", 64, 10, 50);
    draw_text(APP_VERSION, 64 + get_text_width("Wii U Account Swap", 50) + 16, 10, 50, {176, 176, 176, 255});
    draw_text("Nightkingale", 1920 - 64 - get_text_width("Nightkingale", 50), 10, 50);

    draw_rectangle(0, 940, 1920, 140, 125, 0, 125, 255);
    draw_text("Current User: ", 64, 955, 40);
    draw_text(MII_NICKNAME.c_str(), 64 + get_text_width("Current User: ", 40), 955, 40, {176, 176, 176, 255});
    draw_text(ACCOUNT_FILE.c_str(), 64, 1005, 40);
}

void draw_confirm_button(const char* text) {
    draw_rectangle(64, 760, 896, 100, 100, 100, 255, 255);
    draw_rectangle(69, 765, 886, 90, 0, 0, 0, 255);
    draw_text(text, 93, 780, 50);
}

void draw_menu_screen(int selected_menu_item) {
    draw_background(16, 16, 16, 255);
    draw_screen_bars();

    const char* menu_options[] = {
        "Switch to Nintendo Network ID",
        "Switch to Pretendo Network ID",
        "Backup Current Account",
        "Unlink Network ID (Local-Only)"
    };
    const int NUM_MENU_ITEMS = sizeof(menu_options) / sizeof(menu_options[0]);

    for (int i = 0; i < NUM_MENU_ITEMS; i++) {
        if (i == selected_menu_item) {
            // Draw black rectangle with blue border behind selected option
            draw_rectangle(64, 135 + i * 120, 1797, 110, 100, 100, 255, 255); // blue border
            draw_rectangle(69, 140 + i * 120, 1787, 100, 0, 0, 0, 255); // black rectangle
        }
        draw_text(menu_options[i], 93, 160 + i * 120, 50);
    }

    SDL_RenderPresent(renderer);
}

void draw_unlink_menu() {
    draw_background(16, 16, 16, 255);
    draw_screen_bars();

    draw_text("Unlinking: Please read the following and confirm!", 64, 160, 50, {176, 176, 176, 255});

    draw_text("This will unlink your Network ID from this user.", 64, 270, 50);
    draw_text("You can reattach this account to any user on this Wii U,", 64, 330, 50);
    draw_text("or attach a new account to this user.", 64, 390, 50);

    draw_text("However, this unlink will not take place on the server.", 64, 510, 50);
    draw_text("You won't be able to use this account on any other Wii U.", 64, 570, 50);
    
    draw_confirm_button("Confirm Unlink");

    SDL_RenderPresent(renderer);
}

void draw_backup_menu() {
    draw_background(16, 16, 16, 255);
    draw_screen_bars();

    draw_text("Backup: Please read the following and confirm!", 64, 160, 50, {176, 176, 176, 255});

    draw_text("This will backup your current account.dat file.", 64, 270, 50);
    draw_text("The account.dat may contain sensitive personal", 64, 330, 50);
    draw_text("information, such as your e-mail address and encrypted", 64, 390, 50);
    draw_text("cached password (if you have chosen to save it).", 64, 450, 50);

    draw_text("Please do not share these backups with anyone else!", 64, 560, 50);

    draw_confirm_button("Confirm Backup");

    SDL_RenderPresent(renderer);
}

void draw_overwrite_menu(const char* backup_path) {
    draw_background(16, 16, 16, 255);
    draw_screen_bars();

    draw_text("Backup: Please read the following and confirm!", 64, 160, 50);

    draw_text("This will overwrite the existing backup file:", 64, 270, 50);
    draw_text(backup_path, 64, 330, 50);
    draw_text("Are you sure you want to overwrite this file?", 64, 390, 50);

    draw_confirm_button("Confirm Overwrite");

    SDL_RenderPresent(renderer);
}