#include "ui.h"
#include "pir.h"
#include "pins.h"

#include <Arduino.h>
#include <lvgl.h>
#include <stdio.h>

static constexpr uint32_t COL_BG = 0x0A1016;
static constexpr uint32_t COL_INK = 0xEAF0F6;
static constexpr uint32_t COL_MUTED = 0x7A8B9C;
static constexpr uint32_t COL_BTN = 0x243140;
static constexpr uint32_t COL_ACCENT = 0x4FC3F7;
static constexpr uint32_t COL_HOT = 0xFF7043;

static lv_obj_t *lbl_title;
static lv_obj_t *lbl_pin;
static lv_obj_t *lbl_count;
static lv_obj_t *lbl_hint;
static lv_obj_t *lbl_state;
static lv_obj_t *lbl_hold;
static lv_obj_t *lbl_raw;
static lv_obj_t *bar_hold;
static lv_obj_t *btn_reset;
static lv_obj_t *lbl_reset;

static void style_btn(lv_obj_t *btn, uint32_t bg) {
  lv_obj_set_style_radius(btn, 10, 0);
  lv_obj_set_style_bg_color(btn, lv_color_hex(bg), 0);
  lv_obj_set_style_bg_opa(btn, LV_OPA_COVER, 0);
  lv_obj_set_style_shadow_width(btn, 0, 0);
  lv_obj_set_style_border_width(btn, 0, 0);
  lv_obj_set_style_pad_all(btn, 0, 0);
}

void ui_refresh() {
  if (lbl_count) {
    lv_label_set_text_fmt(lbl_count, "%lu", (unsigned long)pir_count());
  }

  const bool active = pir_is_active();
  const uint32_t hold = pir_hold_ms();

  if (lbl_state) {
    lv_label_set_text(lbl_state, active ? "MOTION" : "IDLE");
    lv_obj_set_style_text_color(lbl_state,
                                lv_color_hex(active ? COL_HOT : COL_MUTED), 0);
  }
  if (lbl_hold) {
    if (active) {
      lv_label_set_text_fmt(lbl_hold, "hold %lu ms", (unsigned long)hold);
    } else {
      lv_label_set_text(lbl_hold, "hold --");
    }
  }
  if (bar_hold) {
    // 条：0～5s 映射到 0～100，便于看保持时间
    uint32_t pct = hold / 50;
    if (pct > 100) {
      pct = 100;
    }
    lv_bar_set_value(bar_hold, (int32_t)pct, LV_ANIM_OFF);
    lv_obj_set_style_bg_color(bar_hold,
                              lv_color_hex(active ? COL_HOT : 0x1A2430),
                              LV_PART_INDICATOR);
  }
  if (lbl_raw) {
    const int lv = pir_raw_level();
    lv_label_set_text_fmt(lbl_raw, "OUT %s  act=%s", lv ? "HIGH" : "LOW",
                          pir_active_level() ? "HIGH" : "LOW");
    lv_obj_set_style_text_color(lbl_raw,
                                lv_color_hex(lv ? 0x3DDC97 : COL_MUTED), 0);
  }
}

static void on_reset(lv_event_t *e) {
  if (lv_event_get_code(e) != LV_EVENT_CLICKED) {
    return;
  }
  pir_reset_count();
  ui_refresh();
}

void ui_create() {
  lv_obj_t *scr = lv_screen_active();
  lv_obj_set_style_bg_color(scr, lv_color_hex(COL_BG), 0);
  lv_obj_set_style_bg_opa(scr, LV_OPA_COVER, 0);

  lbl_title = lv_label_create(scr);
  lv_label_set_text(lbl_title, "Human IR");
  lv_obj_set_style_text_color(lbl_title, lv_color_hex(COL_INK), 0);
  lv_obj_set_style_text_font(lbl_title, &lv_font_montserrat_28, 0);
  lv_obj_align(lbl_title, LV_ALIGN_TOP_MID, 0, 2);

  lbl_pin = lv_label_create(scr);
  lv_label_set_text_fmt(lbl_pin, "OUT->GPIO%d  VCC 3.3V", PIR_PIN);
  lv_obj_set_style_text_color(lbl_pin, lv_color_hex(COL_MUTED), 0);
  lv_obj_set_style_text_font(lbl_pin, &lv_font_montserrat_14, 0);
  lv_obj_align(lbl_pin, LV_ALIGN_TOP_MID, 0, 32);

  lbl_count = lv_label_create(scr);
  lv_label_set_text(lbl_count, "0");
  lv_obj_set_style_text_color(lbl_count, lv_color_hex(COL_ACCENT), 0);
  lv_obj_set_style_text_font(lbl_count, &lv_font_montserrat_28, 0);
  lv_obj_align(lbl_count, LV_ALIGN_TOP_MID, 0, 54);

  lbl_hint = lv_label_create(scr);
  lv_label_set_text(lbl_hint, "detects");
  lv_obj_set_style_text_color(lbl_hint, lv_color_hex(COL_MUTED), 0);
  lv_obj_set_style_text_font(lbl_hint, &lv_font_montserrat_14, 0);
  lv_obj_align(lbl_hint, LV_ALIGN_TOP_MID, 0, 88);

  lbl_state = lv_label_create(scr);
  lv_label_set_text(lbl_state, "IDLE");
  lv_obj_set_style_text_color(lbl_state, lv_color_hex(COL_MUTED), 0);
  lv_obj_set_style_text_font(lbl_state, &lv_font_montserrat_20, 0);
  lv_obj_align(lbl_state, LV_ALIGN_TOP_MID, 0, 108);

  lbl_hold = lv_label_create(scr);
  lv_label_set_text(lbl_hold, "hold --");
  lv_obj_set_style_text_color(lbl_hold, lv_color_hex(COL_MUTED), 0);
  lv_obj_set_style_text_font(lbl_hold, &lv_font_montserrat_14, 0);
  lv_obj_align(lbl_hold, LV_ALIGN_TOP_MID, 0, 132);

  bar_hold = lv_bar_create(scr);
  lv_obj_set_size(bar_hold, UI_HOR_RES - 48, 10);
  lv_obj_align(bar_hold, LV_ALIGN_TOP_MID, 0, 152);
  lv_bar_set_range(bar_hold, 0, 100);
  lv_bar_set_value(bar_hold, 0, LV_ANIM_OFF);
  lv_obj_set_style_bg_color(bar_hold, lv_color_hex(0x1A2430), LV_PART_MAIN);
  lv_obj_set_style_bg_opa(bar_hold, LV_OPA_COVER, LV_PART_MAIN);
  lv_obj_set_style_radius(bar_hold, 4, LV_PART_MAIN);
  lv_obj_set_style_bg_color(bar_hold, lv_color_hex(COL_HOT), LV_PART_INDICATOR);
  lv_obj_set_style_radius(bar_hold, 4, LV_PART_INDICATOR);

  lbl_raw = lv_label_create(scr);
  lv_label_set_text(lbl_raw, "OUT --");
  lv_obj_set_style_text_color(lbl_raw, lv_color_hex(COL_MUTED), 0);
  lv_obj_set_style_text_font(lbl_raw, &lv_font_montserrat_14, 0);
  lv_obj_align(lbl_raw, LV_ALIGN_TOP_MID, 0, 168);

  btn_reset = lv_button_create(scr);
  lv_obj_set_size(btn_reset, UI_HOR_RES - 48, 40);
  lv_obj_align(btn_reset, LV_ALIGN_TOP_MID, 0, 192);
  style_btn(btn_reset, COL_BTN);
  lv_obj_add_event_cb(btn_reset, on_reset, LV_EVENT_CLICKED, nullptr);
  lbl_reset = lv_label_create(btn_reset);
  lv_label_set_text(lbl_reset, "Reset");
  lv_obj_set_style_text_color(lbl_reset, lv_color_hex(COL_INK), 0);
  lv_obj_set_style_text_font(lbl_reset, &lv_font_montserrat_20, 0);
  lv_obj_center(lbl_reset);

  ui_refresh();
}