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path: root/web/web_scoreboard.c
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#include "web_match.h"
#include "web_scoreboard.h"

#include "checkouts.h"
#include "match.h"

#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <emscripten/emscripten.h>

struct player_info {
	char *name, *rem, *sugg, *avg;
};

struct player_info buffered_info[2], flushed_info[2];

static inline void buffer_str(char *str, char **buffer, char *flushed)
{
	if (str == *buffer || (str && *buffer && !strcmp(str, *buffer)))
		return;

	if (*buffer && *buffer != flushed)
		free(*buffer);

	*buffer = str ? strdup(str) : NULL;
}

void scoreboard_set_player_name(int pn, char *str)
{
	buffer_str(str, &buffered_info[pn-1].name, flushed_info[pn-1].name);
}

void scoreboard_set_player_rem(int pn, char *str)
{
	buffer_str(str, &buffered_info[pn-1].rem, flushed_info[pn-1].rem);
}

void scoreboard_set_player_sugg(int pn, char *str)
{
	buffer_str(str, &buffered_info[pn-1].sugg, flushed_info[pn-1].sugg);
}

void scoreboard_set_player_avg(int pn, double avg)
{
	char *str = malloc(8);
	sprintf(str, "%.2f", avg);
	buffer_str(str, &buffered_info[pn-1].avg, flushed_info[pn-1].avg);
}

static inline bool buffered_str_changed(char *buffered, char *flushed)
{
	return (!buffered != !flushed) ||
		(buffered && flushed && strcmp(buffered, flushed));
}

static inline void free_flushed_str(char *flushed, char *buffered)
{
	if (flushed && flushed != buffered)
		free(flushed);
}

void scoreboard_flush_player_info(int pn)
{
	char sel[64];
	int len = sprintf(sel, "#p%d-", pn);

	if (buffered_str_changed(buffered_info[pn-1].name,
			flushed_info[pn-1].name)) {
		strcpy(sel + len, "name");
		EM_ASM({elemSetContent($0, $1)}, sel, buffered_info[pn-1].name);
	}

	if (buffered_str_changed(buffered_info[pn-1].rem,
			flushed_info[pn-1].rem)) {
		strcpy(sel + len, "rem");
		EM_ASM({elemSetContent($0, $1)}, sel, buffered_info[pn-1].rem);
	}

	if (buffered_str_changed(buffered_info[pn-1].sugg,
			flushed_info[pn-1].sugg)) {
		strcpy(sel + len, "sugg");
		EM_ASM({elemSetContent($0, $1)}, sel, buffered_info[pn-1].sugg);
	}

	if (buffered_str_changed(buffered_info[pn-1].avg,
			flushed_info[pn-1].avg)) {
		strcpy(sel + len, "avg");
		EM_ASM({elemSetContent($0, $1)}, sel, buffered_info[pn-1].avg);
	}

	free_flushed_str(flushed_info[pn-1].name, buffered_info[pn-1].name);
	free_flushed_str(flushed_info[pn-1].rem, buffered_info[pn-1].rem);
	free_flushed_str(flushed_info[pn-1].sugg, buffered_info[pn-1].sugg);
	free_flushed_str(flushed_info[pn-1].avg, buffered_info[pn-1].avg);

	flushed_info[pn-1] = buffered_info[pn-1];
}

void scoreboard_flush()
{
	scoreboard_flush_player_info(1);
	scoreboard_flush_player_info(2);
}

void update_player_name(int pn, char *str)
{
	scoreboard_set_player_name(pn, str);
}

void update_player_sugg(int pn, int rem)
{
	char str[15] = {0}, *p = str;

	if (rem > 1 && rem <= 170) {
		char *target;
		int i = 3, trem = rem;
		while (i && trem && (target = CHECKOUTS[--i][trem-1])) {
			p += sprintf(p, i == 2 ? "%s" : "-%s", target);
			trem -= segment_points(segment_from_name(target));
		}
	}

	scoreboard_set_player_sugg(pn, str);
}

void update_player_avg(int pn, int n_darts)
{
	struct leg *l = state->legs[pn-1];
	scoreboard_set_player_avg(pn,
		l->n_visits ?
			(l->rem > 0 ? ((double)(l->start - l->rem) / l->n_visits) :
				((double)l->start / (((l->n_visits - 1) * 3) + n_darts) * 3)) :
			0);
}

void update_player_rem(int pn, int rem)
{
	char str[5];
	if (rem < 0 || rem == 1)
		strcpy(str, "BUST");
	else
		sprintf(str, "%d", rem);

	scoreboard_set_player_rem(pn, str);
	if (pn == 1 || state->mode != M_PVC)
		update_player_sugg(pn, rem);
}

void clear_player_info(int pn)
{
	scoreboard_set_player_name(pn, NULL);
	scoreboard_set_player_rem(pn, NULL);
	scoreboard_set_player_sugg(pn, NULL);
	scoreboard_set_player_avg(pn, 0);
}

void draw_visits()
{
	EM_ASM({elemSetContent($0, $1)}, "#visits", NULL);

	char visit_no[10], p1_pts[10], p1_rem[10],
		p2_pts[10], p2_rem[10], p2_darts[100];

	sprintf(p1_rem, "%d", state->legs[0]->start);
	sprintf(p2_rem, "%d", state->legs[1]->start);
	EM_ASM({drawVisit($0, $1, $2, $3, $4, $5)},
		"0", "", p1_rem, "", state->mode == M_P ? "" : p2_rem, "");

	int n_visits = state->legs[0]->n_visits > state->legs[1]->n_visits ?
		state->legs[0]->n_visits : state->legs[1]->n_visits;
	for (int i = 0; i < n_visits; ++i) {
		visit_no[0] = p1_pts[0] = p1_rem[0] =
			p2_pts[0] = p2_rem[0] = p2_darts[0] = 0;

		sprintf(visit_no, "%d", i + 1);

		struct visit *v = state->legs[0]->visits + i;
		sprintf(p1_pts, "%d", v->points);
		sprintf(p1_rem, "%d", v->rem);

		if (i < state->legs[1]->n_visits) {
			v = state->legs[1]->visits + i;
			sprintf(p2_pts, "%d", v->points);
			sprintf(p2_rem, "%d", v->rem);

			for (int j = 0; j < v->n_darts; ++j) {
				char *n = segment_name(v->darts[j]);
				sprintf(p2_darts + (j ? (j*5 - 1) : 0),
					j == 0 ? "%4s" : " %4s", n);
				free(n);
			}
		}

		EM_ASM({drawVisit($0, $1, $2, $3, $4, $5)},
			visit_no, p1_pts, p1_rem, p2_pts, p2_rem, p2_darts);
	}
}