#pragma once

#include <stdbool.h>
#include <stdint.h>

#include "types.h"

typedef enum event_type_t {
  EVENT_TYPE_MAPPING_NOTIFY,
  EVENT_TYPE_KEY_PRESS,
  EVENT_TYPE_BUTTON_PRESS,
  EVENT_TYPE_CONFIGURE_REQUEST,
  EVENT_TYPE_CONFIGURE_NOTIFY,
  EVENT_TYPE_MAP_REQUEST,
  EVENT_TYPE_UNMAP_NOTIFY,
  EVENT_TYPE_DESTROY_NOTIFY,
  EVENT_TYPE_EXPOSE,
  EVENT_TYPE_MOTION_NOTIFY,
  EVENT_TYPE_ENTER_NOTIFY,
  EVENT_TYPE_FOCUS_IN,
  EVENT_TYPE_PROPERTY_NOTIFY,
  EVENT_TYPE_CLIENT_MESSAGE,
} event_type_t;

typedef enum notify_mode_t {
  notify_mode_normal = 0,
  notify_mode_grab = 1,
  notify_mode_ungrab = 2,
  notify_mode_while_grabbed = 3
} notify_mode_t;

typedef enum notify_detail_t {
  notify_detail_ancestor = 0,
  notify_detail_virtual = 1,
  notify_detail_inferior = 2,
  notify_detail_nonlinear = 3,
  notify_detail_nonlinear_virtual = 4,
  notify_detail_pointer = 5,
  notify_detail_pointer_root = 6,
  notify_detail_none = 7,
} notify_detail_t;

typedef enum mapping_t {
  MAPPING_MODIFIER = 0,
  MAPPING_KEYBOARD = 1,
  MAPPING_POINTER = 2
} mapping_t;

typedef struct mapping_notify_event_t {
  event_type_t type;
  mapping_t request;
} mapping_notify_event_t;

typedef struct key_press_event_t {
  event_type_t type;
  uint32_t key_symbol;
  uint32_t modifiers;
} key_press_event_t;

typedef struct button_press_event_t {
  event_type_t type;
  xcb_window_t window;
  xcb_window_t root;
  int32_t x, y, root_x, root_y;
  uint32_t time; /* 时间戳（单位：ms） */
} button_press_event_t;

typedef struct configure_request_event_t {
  event_type_t type;
  xcb_window_t window;
  xcb_window_t parent;
  xcb_window_t sibling;
  int32_t x, y;
  uint32_t width, height, border_width;
  uint32_t value_mask;
  uint8_t stack_mode;
} configure_request_event_t;

typedef struct configure_notify_event_t {
  event_type_t type;
} configure_notify_event_t;

typedef struct map_request_event_t {
  event_type_t type;
  xcb_window_t window;
  xcb_window_t parent;
} map_request_event_t;

typedef struct unmap_notify_event_t {
  event_type_t type;
  xcb_window_t window;
  bool send_event;
} unmap_notify_event_t;

typedef struct destroy_notify_event_t {
  event_type_t type;
  xcb_window_t window;
} destroy_notify_event_t;

typedef struct expose_event_t {
  event_type_t type;
  xcb_window_t window;
  uint32_t count;
} expose_event_t;

typedef struct motion_notify_event_t {
  event_type_t type;
  xcb_window_t root;
  int32_t root_x;
  int32_t root_y;
  xcb_window_t window;
  int32_t x;
  int32_t y;
  uint32_t time; /* 时间戳（单位：ms） */
} motion_notify_event_t;

typedef struct enter_notify_event_t {
  event_type_t type;
  xcb_window_t window;
  notify_mode_t mode;
  notify_detail_t detail;
} enter_notify_event_t;

typedef struct focus_in_event_t {
  event_type_t type;
  xcb_window_t window;
} focus_in_event_t;

typedef enum property_state_t {
  property_new_value = 0,
  property_delete = 1
} property_state_t;
typedef struct property_notify_event_t {
  event_type_t type;
  xcb_window_t window;
  uint32_t xcb_atom;
  property_state_t state;
} property_notify_event_t;

typedef union client_message_data_t {
  uint8_t data8[20];
  uint16_t data16[10];
  uint32_t data32[5];
} client_message_data_t;
typedef struct client_message_event_t {
  event_type_t type;
  xcb_window_t window;
  uint32_t message_type;
  client_message_data_t data;
  uint8_t format;
} client_message_event_t;

typedef union generic_event_t {
  event_type_t type;
  mapping_notify_event_t mapping_notify;
  key_press_event_t key_press;
  button_press_event_t button_press;
  configure_request_event_t configure_request;
  configure_notify_event_t configure_notify;
  map_request_event_t map_request;
  unmap_notify_event_t unmap_notify;
  destroy_notify_event_t destroy_notify;
  expose_event_t expose;
  motion_notify_event_t motiion_notify;
  enter_notify_event_t enter_notify;
  focus_in_event_t focus_in;
  property_notify_event_t property_notify;
  client_message_event_t client_message;
} generic_event_t;

typedef void (*event_handler)(generic_event_t *event, void *user_data);

typedef struct event_adapter_t event_adapter_t;
event_adapter_t *create_event_adapter(void);
void destroy_event_adapter(event_adapter_t *adapter);
void event_adapter_set_handler(event_adapter_t *adapter, event_handler handler,
                               void *user_data);
void event_adapter_poll(event_adapter_t *adapter);