#include "xdo_cmd.h"
#include <string.h>

int cmd_click(context_t *context) {
  int button;
  char *cmd = context->argv[0];
  int ret = 0;
  int clear_modifiers = 0;
  charcodemap_t *active_mods = NULL;
  int active_mods_n;
  char *window_arg = NULL;
  useconds_t delay = 100000; /* 100ms */
  int repeat = 1;

  int c;
  enum { 
    opt_unused, opt_help, opt_clearmodifiers, opt_window, opt_delay,
    opt_repeat
  };
  static struct option longopts[] = {
    { "clearmodifiers", no_argument, NULL, opt_clearmodifiers },
    { "help", no_argument, NULL, opt_help },
    { "window", required_argument, NULL, opt_window },
    { "delay", required_argument, NULL, opt_delay },
    { "repeat", required_argument, NULL, opt_repeat },
    { 0, 0, 0, 0 },
  };
  static const char *usage = 
            "Usage: %s [options] <button>\n"
            "--clearmodifiers       - reset active modifiers (alt, etc) while typing\n"
            "--window WINDOW        - specify a window to send click to\n"
            "--repeat REPEATS       - number of times to click. Default is 1\n"
            "--delay MILLISECONDS   - delay in milliseconds between clicks.\n"
            "    This has no effect if you do not use --repeat.\n"
            "    Default is 100ms\n"
            "\n"
            "Button is a button number. Generally, left = 1, middle = 2, \n"
            "right = 3, wheel up = 4, wheel down = 5\n";
  int option_index;

  while ((c = getopt_long_only(context->argc, context->argv, "+cw:h",
                               longopts, &option_index)) != -1) {
    switch (c) {
      case 'h':
      case opt_help:
        printf(usage, cmd);
        consume_args(context, context->argc);
        return EXIT_SUCCESS;
        break;
      case 'c':
      case opt_clearmodifiers:
        clear_modifiers = 1;
        break;
      case 'w':
      case opt_window:
        clear_modifiers = 1;
        window_arg = strdup(optarg);
        break;
      case 'd':
      case opt_delay:
        delay = strtoul(optarg, NULL, 0) * 1000; /* convert ms to usec */
        break;
      case 'r':
      case opt_repeat:
        repeat = atoi(optarg);
        if (repeat <= 0) { 
          fprintf(stderr, "Invalid repeat value '%s' (must be >= 1)\n", optarg);
          fprintf(stderr, usage, cmd);
          return EXIT_FAILURE;
        }
        break;
      default:
        fprintf(stderr, usage, cmd);
        return EXIT_FAILURE;
    }
  }

  consume_args(context, optind);

  if (context->argc < 1) {
    fprintf(stderr, usage, cmd);
    fprintf(stderr, "You specified the wrong number of args.\n");
    return EXIT_FAILURE;
  }

  button = atoi(context->argv[0]);

  window_each(context, window_arg, {
    if (clear_modifiers) {
      xdo_get_active_modifiers(context->xdo, &active_mods, &active_mods_n);
      xdo_clear_active_modifiers(context->xdo, window, active_mods, active_mods_n);
    }

    ret = xdo_click_window_multiple(context->xdo, window, button, repeat, delay);
    if (ret != XDO_SUCCESS) {
      fprintf(stderr, "xdo_click_window failed on window %ld\n", window);
      return ret;
    }

    if (clear_modifiers) {
      xdo_set_active_modifiers(context->xdo, window, active_mods, active_mods_n);
      free(active_mods);
    }
  }); /* window_each(...) */

  consume_args(context, 1);
  return ret;
}