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/* Copyright (C) 2018  Curtis McEnroe <june@causal.agency>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <err.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
#include <wchar.h>

#include "chat.h"

static wchar_t *wcssep(wchar_t **stringp, const wchar_t *delim) {
	wchar_t *orig = *stringp;
	if (!orig) return NULL;
	size_t i = wcscspn(orig, delim);
	*stringp = NULL;
	if (orig[i]) {
		orig[i] = '\0';
		*stringp = &orig[i + 1];
	}
	return orig;
}

static void privmsg(bool action, const wchar_t *mesg) {
	char *line;
	int send;
	asprintf(
		&line, ":%s!%s %nPRIVMSG %s :%s%ls%s",
		chat.nick, chat.user, &send, chat.chan,
		(action ? "\1ACTION " : ""), mesg, (action ? "\1" : "")
	);
	if (!line) err(EX_OSERR, "asprintf");
	clientFmt("%s\r\n", &line[send]);
	handle(line);
	free(line);
}

typedef void (*Handler)(wchar_t *params);

static void inputMe(wchar_t *params) {
	privmsg(true, params ? params : L"");
}

static void inputNick(wchar_t *params) {
	wchar_t *nick = wcssep(&params, L" ");
	if (nick) {
		clientFmt("NICK %ls\r\n", nick);
	} else {
		uiChat("/nick requires a name");
	}
}

static void inputWho(wchar_t *params) {
	(void)params;
	clientFmt("WHO %s\r\n", chat.chan);
}

static void inputQuit(wchar_t *params) {
	if (params) {
		clientFmt("QUIT :%ls\r\n", params);
	} else {
		clientFmt("QUIT :Goodbye\r\n");
	}
}

static const struct {
	const wchar_t *command;
	Handler handler;
} COMMANDS[] = {
	{ L"me", inputMe },
	{ L"names", inputWho },
	{ L"nick", inputNick },
	{ L"quit", inputQuit },
	{ L"who", inputWho },
};
static const size_t COMMANDS_LEN = sizeof(COMMANDS) / sizeof(COMMANDS[0]);

void input(wchar_t *input) {
	if (input[0] != '/') {
		privmsg(false, input);
		return;
	}
	input++;
	wchar_t *command = wcssep(&input, L" ");
	for (size_t i = 0; i < COMMANDS_LEN; ++i) {
		if (wcscmp(command, COMMANDS[i].command)) continue;
		COMMANDS[i].handler(input);
		return;
	}
	uiFmt("/%ls isn't a recognized command", command);
}
772c6&follow=1'>Enable -Wmissing-prototypesJune McEnroe In other words, warn when a function is missing static. I don't see why this isn't in -Wextra. 2022-02-19Fix edit.[ch] license notice additional permissionsJune McEnroe 2022-02-19Run line editing testsJune McEnroe I know, it feels wrong. 2022-02-18Implement new line editing "library"June McEnroe Losing tab complete and text macros, for now. This new implementation works on an instance of a struct and does not interact with the rest of catgirl, making it possible to copy into another project. Unlike existing line editing libraries, this one is entirely abstract and can be rendered externally. My goal with this library is to be able to implement vi mode. Since it operates on struct instances rather than globals, it might also be possible to give catgirl separate line editing buffers for each window, which would be a nice UX improvement. 2022-02-18Simplify cursor positioning in inputJune McEnroe Do some extra work by adding the portion before the cursor to the input window twice, but simplify the interaction with the split point. This fixes the awkward behaviour when moving the cursor across colour codes where the code would be partially interpreted up to the cursor. 2022-02-18Fix M-f orderingJune McEnroe 2022-02-12Move sandman build to scripts/MakefileJune McEnroe 2022-02-12Use compat_readpassphrase.c on LinuxJune McEnroe 2022-02-12Copy RPP defines from oconfigureJune McEnroe