#include <stdio.h>
#include <string.h>
#include <sdkconfig.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <freertos/queue.h>
#include <esp_system.h>
#include <esp_err.h>
#include <esp_log.h>
#include "appfs.h"
#include "ili9341.h"
#include "pax_gfx.h"
#include "pax_codecs.h"
#include "menu.h"
#include "rp2040.h"
#include "appfs_wrapper.h"

extern const uint8_t apps_png_start[] asm("_binary_apps_png_start");
extern const uint8_t apps_png_end[] asm("_binary_apps_png_end");

typedef enum {
    ACTION_NONE,
    ACTION_APPFS,
    ACTION_BACK
} menu_launcher_action_t;

typedef struct {
    appfs_handle_t fd;
    menu_launcher_action_t action;
} menu_launcher_args_t;

void menu_launcher(xQueueHandle buttonQueue, pax_buf_t* pax_buffer, ILI9341* ili9341) {
    menu_t* menu = menu_alloc("Apps", 32, 18);
    
    menu->fgColor           = 0xFF000000;
    menu->bgColor           = 0xFFFFFFFF;
    menu->bgTextColor       = 0xFFFFFFFF;
    menu->selectedItemColor = 0xFFfa448c;
    menu->borderColor       = 0xFF491d88;
    menu->titleColor        = 0xFFfa448c;
    menu->titleBgColor      = 0xFF491d88;
    menu->scrollbarBgColor  = 0xFFCCCCCC;
    menu->scrollbarFgColor  = 0xFF555555;
     
    pax_buf_t icon_apps;
    pax_decode_png_buf(&icon_apps, (void*) apps_png_start, apps_png_end - apps_png_start, PAX_BUF_32_8888ARGB, 0);
    
    menu_set_icon(menu, &icon_apps);
    
    const pax_font_t *font = pax_get_font("saira regular");
    
    appfs_handle_t appfs_fd = APPFS_INVALID_FD;
    while (1) {
        appfs_fd = appfsNextEntry(appfs_fd);
        if (appfs_fd == APPFS_INVALID_FD) break;
        const char* name = NULL;
        appfsEntryInfo(appfs_fd, &name, NULL);
        menu_launcher_args_t* args = malloc(sizeof(menu_launcher_args_t));
        args->fd = appfs_fd;
        args->action = ACTION_APPFS;
        menu_insert_item(menu, name, NULL, (void*) args, -1);
    }

    bool render = true;
    menu_launcher_args_t* menuArgs = NULL;
    
    pax_background(pax_buffer, 0xFFFFFF);
    pax_noclip(pax_buffer);
    pax_draw_text(pax_buffer, 0xFF000000, font, 18, 5, 240 - 18, "[A] start app  [B] back");

    bool quit = false;

    while (1) {
        rp2040_input_message_t buttonMessage = {0};
        if (xQueueReceive(buttonQueue, &buttonMessage, 16 / portTICK_PERIOD_MS) == pdTRUE) {
            uint8_t pin = buttonMessage.input;
            bool value = buttonMessage.state;
            switch(pin) {
                case RP2040_INPUT_JOYSTICK_DOWN:
                    if (value) {
                        menu_navigate_next(menu);
                        render = true;
                    }
                    break;
                case RP2040_INPUT_JOYSTICK_UP:
                    if (value) {
                        menu_navigate_previous(menu);
                        render = true;
                    }
                    break;
                case RP2040_INPUT_BUTTON_HOME:
                case RP2040_INPUT_BUTTON_BACK:
                    if (value) {
                        quit = true;
                    }
                    break;
                case RP2040_INPUT_BUTTON_ACCEPT:
                case RP2040_INPUT_JOYSTICK_PRESS:
                case RP2040_INPUT_BUTTON_SELECT:
                case RP2040_INPUT_BUTTON_START:
                    if (value) {
                        menuArgs = menu_get_callback_args(menu, menu_get_position(menu));
                    }
                    break;
                default:
                    break;
            }
        }

        if (render) {
            menu_render(pax_buffer, menu, 0, 0, 320, 220, 0xFF491d88);
            ili9341_write(ili9341, pax_buffer->buf);
            render = false;
        }

        if (menuArgs != NULL) {
            if (menuArgs->action == ACTION_APPFS) {
                appfs_boot_app(menuArgs->fd);
            }
            break;
        }
        
        if (quit) {
            break;
        }
    }

    for (size_t index = 0; index < menu_get_length(menu); index++) {
        free(menu_get_callback_args(menu, index));
    }

    menu_free(menu);
    pax_buf_destroy(&icon_apps);
}