#pragma once

// Display (ST7789, SPI)
// Source: https://www.lcdwiki.com/2.8inch_ESP32-32E-7789
// Driver: LovyanGFX with Panel_ST7789

#define PIN_TFT_MOSI    13
#define PIN_TFT_MISO    12
#define PIN_TFT_SCLK    14
#define PIN_TFT_CS      15
#define PIN_TFT_DC       2
#define PIN_TFT_RST     -1
#define PIN_TFT_BL      21   // Backlight

#define PANEL_NATIVE_W  240
#define PANEL_NATIVE_H  320

// Dimensions after rotation, for sanity. 
#define TFT_W  320
#define TFT_H  240


// Touchscreen (XPT2046, software SPI)
// unused for now, because shared pins with KB i2c.
#define PIN_BOOT_BTN     0
#define PIN_TOUCH_IRQ   36
#define PIN_TOUCH_MOSI  32
#define PIN_TOUCH_MISO  39
#define PIN_TOUCH_CLK   25
#define PIN_TOUCH_CS    33
// TODO: should calibrate if used.
#define TOUCH_X_MIN   200
#define TOUCH_X_MAX  3800
#define TOUCH_Y_MIN   200
#define TOUCH_Y_MAX  3800


// CardKB (M5Stack v1.1, I2C)
// SDA/GPIO21 is taken by the display backlight.
#define PIN_KB_SDA      23
#define PIN_KB_SCL      19
#define CARDKB_ADDR    0x5F
#define CARDKB_I2C_HZ  100000UL
// CardKB key byte values
#define KB_KEY_ENTER     0x0D
#define KB_KEY_BACKSPACE 0x08
#define KB_KEY_TAB       0x09
#define KB_KEY_ESC       0x1B

// Notes mode / BT dump
#define BT_DUMP_COUNTDOWN_S    3
#define NOTES_FILE "/notes.txt"


// ESP-NOW Chat
#define CHAT_PING_INTERVAL_MS     500
#define CHAT_PEER_TIMEOUT_MS     2000
#define CHAT_DEDUP_HISTORY        32
#define CHAT_MAX_MESSAGES         20
#define CHAT_MAX_MSG_LEN         100
#define CHAT_MAX_NICK_LEN         16
#define CHAT_MAX_PEERS            30
#define INPUT_MAX_LEN            (CHAT_MAX_MSG_LEN - 1)
#define NICK_DEFAULT_PREFIX       "user"

// UI layout constants
#define UI_HEADER_H      20   // top status bar height
#define UI_INPUT_H       20   // bottom input line height
#define UI_MSG_AREA_Y    (UI_HEADER_H + 1)
#define UI_MSG_AREA_H    (TFT_H - UI_HEADER_H - UI_INPUT_H - 2)
#define UI_INPUT_Y       (TFT_H - UI_INPUT_H)
#define UI_LINE_H        18 // Approximate
#define UI_VISIBLE_LINES  (UI_MSG_AREA_H / UI_LINE_H)

#define PIN_LED_RED     22
#define PIN_LED_GREEN   16
#define PIN_LED_BLUE    17

// SD card reader (unused)
// note: some same pins as cardKB!
#define PIN_SD_CS       5
#define PIN_SD_MOSI     23
#define PIN_SD_SCLK     18
#define PIN_SD_MISO     19


// Speaker
#define PIN_SPEAKER 26
#define PIN_SPEAKER_EN 4

// Misc
#define SERIAL_BAUD     115200

#define PIN_TOUCH7 27
#define TOUCH_THRESHOLD 200   /* Greater the value, more the sensitivity */