/*
 * MTG RFID Companion - UI task (Core 1)
 */

#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_log.h"
#include "display_manager.h"
#include "ui_task.h"

static const char *TAG = "ui";

#define UI_TASK_STACK (8 * 1024)
#define UI_TASK_PRIO  (5)
#define UI_CORE       (1)

static TaskHandle_t s_ui_task = NULL;

static void draw_color_bars(void)
{
    static const uint16_t bars[] = {
        COLOR_WHITE, COLOR_YELLOW, COLOR_CYAN, COLOR_GREEN,
        COLOR_MAGENTA, COLOR_RED, COLOR_BLUE, COLOR_BLACK
    };
    const int band = DISP_W / 8;
    for (int i = 0; i < 8; i++) {
        display_fill_rect(i * band, 0, (i + 1) * band, 64, bars[i]);
    }
}

static void ui_boot_demo(void)
{
    ESP_LOGI(TAG, "UI demo: color bars");
    draw_color_bars();
    vTaskDelay(pdMS_TO_TICKS(1500));

    ESP_LOGI(TAG, "UI demo: text rendering");
    display_fill(COLOR_BLACK);
    display_put_text_center(8, "MTG RFID COMPANION", COLOR_YELLOW, COLOR_BLACK);
    display_put_text(16, 40, "UID: 04A2B3C4", COLOR_GREEN, COLOR_BLACK);
    display_put_text(16, 56, "SOL RING", COLOR_WHITE, COLOR_BLACK);
    display_put_text(16, 72, "MANA {1}", COLOR_CYAN, COLOR_BLACK);
    display_put_text(16, 88, "PRICE $1.25", COLOR_MAGENTA, COLOR_BLACK);
    vTaskDelay(pdMS_TO_TICKS(2000));

    ESP_LOGI(TAG, "UI demo: JPEG decode from LittleFS");
    display_show_jpeg_file("/spiffs/cards/sample.jpg");
    vTaskDelay(pdMS_TO_TICKS(3000));

    ESP_LOGI(TAG, "UI demo complete");
}

static void ui_task(void *arg)
{
    (void)arg;
    ESP_LOGI(TAG, "UI task on core %d", xPortGetCoreID());
    ui_boot_demo();
    ESP_LOGI(TAG, "UI task entering idle render loop");
    while (1) {
        /* Placeholder idle loop; state-driven rendering lands in Phase 7. */
        vTaskDelay(pdMS_TO_TICKS(100));
    }
}

esp_err_t ui_task_start(void)
{
    xTaskCreatePinnedToCore(ui_task, "ui_task", UI_TASK_STACK, NULL, UI_TASK_PRIO, &s_ui_task, UI_CORE);
    return ESP_OK;
}

void ui_task_wait_boot(void)
{
    /* Expose for later phases; currently no-op before state machine lands. */
}