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#include <stdlib.h>
#include <glib.h>
#include <glib/gprintf.h>
#include <gtk/gtk.h>
#include <string.h>
unsigned char dc_ui_def_u[] = {
#include <ui.xxd>
};
char * dc_ui_def = (char *) dc_ui_def_u;
#define DC_UI_SET_STATUS(b, s) gtk_label_set_text(GTK_LABEL(gtk_builder_get_object(b, "dc_main_status")), s)
struct dc_ui_data {
	GtkBuilder * b;
	GKeyFile * k;
};
enum dc_permissions { /* other permissions exist, but are not implemented/understood */
	DC_ALL_PERMISSIONS = 1 << 3, /* this is incredibly retarded, why is this SEPARATE?!? - admins */
	DC_CHANNEL_VIEW = 1 << 10, /* all enum fields here have values same as the server values */
	DC_MESSAGE_SEND = 1 << 11,
	DC_MESSAGE_READ = 1 << 16, /* na tistem vegova serverju sem lahko pošiljal ne pa bral sporočil */
	DC_VOICE_LISTEN = 1 << 20,
	DC_VOICE_SPEAK = 1 << 21
};
enum dc_channel_type { /* other types exist, but are not implemented/understood */
	DC_TEXT, /* all enum fields here have values same as the values that the server sends */
	DC_DM,
	DC_VOICE,
	DC_DM2 /* retarded. server sometimes sends this... converted to DC_DM at parsing server resp. */
};
struct dc_program { /* parent struct of dc_client, in case multi-login will ever be implemented (no) */
	struct dc_client * clients; /* yesfree */	/* dc_program contains the storage of all */
	size_t clients_sizeof;				/* structs in program. freeing is done from */
	struct dc_guild * guilds; /* yesfree */		/* here and clasification (chans of a guild) */
	size_t guilds_sizeof;				/* is done via the use of linked lists. */
	struct dc_channel * channels; /* yesfree */	/* before a network query, this storage may be */
	size_t channels_sizeof;				/* used to check if we already have the info */
	struct dc_message * messages; /* yesfree */	/* already. for example to get dc_user from */
	size_t messages_sizeof;				/* user id-user may be available on another */
	struct dc_role * roles; /* yesfree */		/* guild. sizeof=length so make sure heap */
	size_t roles_sizeof;				/* *alloc()ations are fast. they are on linux */
};							/* http://ž.ga/linuxfast */
struct dc_user {
	unsigned long long int id;
	short int discriminator;
	char * username; /* yesfree */
};
struct dc_role {
	unsigned long long int id;
	char * name; /* yesfree */
	enum dc_permissions permissions;
	struct dc_guild * guild; /* nofree - owner of the role */
	struct dc_role * next; /* nofree - next role (linked list of all roles of dc_guild) */
};
struct dc_role_membership {
	struct dc_guild * guild; /* nofree */
	struct dc_user * user; /* nofree */
	struct dc_role * role; /* nofree */
};
struct dc_client {
	char * authorization; /* yesfree - authorization header value */
	char * email; /* yesfree */
	char * password; /* yesfree */
	struct dc_user * user; /* nofree - logged in user */
	struct dc_guild * guild; /* nofree - first guild */
};
struct dc_guild {
	char * name; /* yesfree */
	unsigned long long int id; /* 0 for virtual DMs guild */
	struct dc_client * client; /* nofree */
	char * alternative_messages_url; /* yesfree, internal - alternative messages url - for virtual DMs guild */
	struct dc_guild * next; /* nofree - next guild (linked list of all guilds of dc_client) */
	struct dc_channel * channel; /* nofree - first channel */
	struct dc_role * role; /* nofree - first role. NOTE: first role is always role with role ID that is same as guild ID and it is the @everyone role */
	enum dc_permissions permissions;
};
struct dc_permission { /* permissions can be individual on a per-channel basis */
	struct dc_permission * next; /* nofree - next permission (linked list of all perms of channel) */
	enum dc_permissions allow;
	enum dc_permissions deny;
	unsigned long long int id; /* to whom does this permission apply */
	struct dc_channel * channel; /* nofree - on which channel does it apply */
	struct dc_user user; /* non-null if permission applies to a user */
	struct dc_role role; /* non-null if it applies to a role */
	int type; /* 0=role, 1=member NOTE: user and role may not be filled at start, check id in case */
}; /* permissions are only useful for checking OUR permissions, not others'. keep that in mind. */
struct dc_channel {
	char * name; /* yesfree - name */
	char * topic; /* yesfree - topic */
	unsigned long long int id;
	enum dc_channel_type type;
	struct dc_guild * guild; /* nofree */
	struct dc_channel * next; /* nofree - next channel (linked list of all guilds of dc_guild) */
	struct dc_message * message; /* nofree - first message (ordered by time) */
};
struct dc_message {
	struct dc_channel * channel; /* nofree */
	struct dc_user * user; /* nofree */
	char * message; /* yesfree */
	char * attachment; /* yesfree */
	time_t time;
	unsigned long long int id;
	struct dc_message * next; /* next message (linked list of all messages of dc_channel) */
};
/*
	# configuration file - loaded at startup, saved at exit, comments persist - description:
	[discord.c]
	multiline = true|false
	login = string
	password = string
*/
void dc_ui_spawn_message (struct dc_message * m, struct dc_ui_data * d) { /* !m to clear messages */
	size_t i = 0;
	GtkWidget * b;
	GtkWidget * w, * w2;
#define DC_USMTL 32
	char t[DC_USMTL];
	GtkGrid * g = GTK_GRID(gtk_builder_get_object(d->b, "dc_main_messages"));
	if (!m) {
		while (gtk_grid_get_child_at(g, 0, 0))
			gtk_grid_remove_row(g, 0);
		return;
	}
	while ((w = gtk_grid_get_child_at(g, 0, i))) { /* now we get the index BEFORE which message will be placed */
		struct dc_message * before, * after;
		before = (struct dc_message *) g_object_get_data(G_OBJECT(w), "message"); /* this literally mustn't and can't be NULL */
		if ((w2 = gtk_grid_get_child_at(g, 0, i+1)))
			after = (struct dc_message *) g_object_get_data(G_OBJECT(w2), "message"); /* same here */
		else { /* there is nothing after, message is new */
			i++; /* BEFORE WHICH */
			break;
		}
		if (m->time >= before->time && m->time <= after->time) { /* we've found a spot between two messages */
			i++; /* SAME HERE. if there are no messages already, while will fail immediatley and i will remain 0 */
			break;
		}
	}
	gtk_grid_insert_row(g, i);
	gtk_grid_insert_column(g, i);
	b = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0 /* spacing pixels */);
	gtk_container_add(GTK_CONTAINER(b), gtk_label_new(m->user->username));
	/* TODO: implement parsing markup here: bold, italic, underline; REMOVE < character; implement tags, timestamps, channels and spoilers with GTK ahrefs */
	strftime(t, DC_USMTL, "%c", localtime(&m->time)); /* singlethreaded only */
	gtk_container_add(GTK_CONTAINER(b), gtk_label_new(t));
	g_object_set_data(G_OBJECT(w), "message", m);
	gtk_grid_attach(g /* grid */, b /* widget to insert */, 0 /* left */, i /* top */, 1 /* width */, 1 /* height */);
	if (m->user == m->channel->guild->client->user) { /* TODO: if I posted the message, make it an editable textview */
	}
	gtk_grid_attach(g, GTK_WIDGET(gtk_label_new(m->message)), 1, i, 1, 1);
}
gchar * gtk_text_buffer_get_all_text(GtkTextBuffer * b) {
	GtkTextIter s, e;
	gtk_text_buffer_get_start_iter(b, &s);
	gtk_text_buffer_get_end_iter(b, &e);
	gchar * c = gtk_text_iter_get_text(&s, &e);
	return c; /* must-g_free, transfer-full */
}
G_MODULE_EXPORT void dc_ui_settings_ok (GtkButton * b, struct dc_ui_data * d) {
	g_key_file_set_boolean(d->k, "discord.c", "multiline", gtk_switch_get_active(GTK_SWITCH(gtk_builder_get_object(d->b, "dc_settings_multiline"))));
	g_key_file_set_string(d->k, "discord.c", "login", gtk_entry_get_text(GTK_ENTRY(gtk_builder_get_object(d->b, "dc_settings_login"))));
	g_key_file_set_string(d->k, "discord.c", "password", gtk_entry_get_text(GTK_ENTRY(gtk_builder_get_object(d->b, "dc_settings_password"))));
	gtk_widget_hide(gtk_widget_get_toplevel(GTK_WIDGET(b)));
}
G_MODULE_EXPORT void dc_ui_inputbox_changed (GtkWidget * i, struct dc_ui_data * d) {
	GtkTextView * t = GTK_TEXT_VIEW(gtk_builder_get_object(d->b, "dc_main_multiline"));
	GtkEntry * e = GTK_ENTRY(gtk_builder_get_object(d->b, "dc_main_singleline"));
	GtkWidget * b = GTK_WIDGET(gtk_builder_get_object(d->b, "dc_main_send"));
	gchar * c = gtk_text_buffer_get_all_text(gtk_text_view_get_buffer(t));
	gtk_widget_set_sensitive(b, c[0] || gtk_entry_get_text(e)[0] ? TRUE : FALSE);
	g_free(c);
}
void dc_ui_inputbox_activate (GtkWidget * a, struct dc_ui_data * d) {
	GtkTextView * t = GTK_TEXT_VIEW(gtk_builder_get_object(d->b, "dc_main_multiline"));
	GtkEntry * e = GTK_ENTRY(gtk_builder_get_object(d->b, "dc_main_singleline"));
	GtkTextBuffer * b = gtk_text_view_get_buffer(t);
	gchar * c = (gchar *) /* DROPPING const HERE!!! TODO: do this more politely with suppressions etc. */ gtk_entry_get_text(e); /* do not free this one */
	if (c[0])
		g_print("entry says: %s\n", c);
	else { /* we need text from the textview, entry is empty */
		c = gtk_text_buffer_get_all_text(b);
		g_print("textview says: %s\n", c);
		a = NULL; /* so we mark the state, if we should free c or not */
	}
	/* do stuff with c */
	if (c[0] == '/') /* handle command */
		switch (c[1]) { /* unlike before the rewrite / can't be escaped, because escaping / is useless. */
			case 'c': /* clear messages, developing debugging TODO: delete before production useless */
			case 'C':
				dc_ui_spawn_message(NULL, d);
				break;
		}
	else { /* send message to channel */

	}
	/* stop doing stuff with c */
	if (!a)
		g_free(c);
	gtk_text_buffer_set_text(b, "", -1);
	gtk_entry_set_text(e, ""); /* singleline */
}
G_MODULE_EXPORT gboolean dc_ui_multiline_focus (GtkTextView * t, GtkDirectionType d /* pojma nimam, kako ta enum pove a mam fokus al ne... čudno */, gpointer u) { /* not working, there's not placeholder then */
	char * p = "Enter message in this multiline text field or switch to a single line in preferences. Send message with Ctrl+Enter.";
	GtkTextBuffer * b = gtk_text_view_get_buffer(t);
	gchar * c = gtk_text_buffer_get_all_text(b);
	if (gtk_widget_has_focus(GTK_WIDGET(t))) {
		if (!strcmp(p, c))
			gtk_text_buffer_set_text(b, "", -1);
	} else
		if (!c[0])
			gtk_text_buffer_set_text(b, p, -1);
	g_free(c);
	return FALSE; /* to keep executing other handles for signals instead of finishing here. AFAIK, RTFM */
}
G_MODULE_EXPORT void dc_ui_set_multiline (GtkSwitch * a, gboolean s, struct dc_ui_data * d) {
	GtkWidget * t = GTK_WIDGET(gtk_builder_get_object(d->b, "dc_main_multiline"));
	GtkWidget * e = GTK_WIDGET(gtk_builder_get_object(d->b, "dc_main_singleline"));
	gtk_widget_hide(e);
	gtk_widget_hide(t);
	if (s)
		gtk_widget_show(t);
	else
		gtk_widget_show(e);
	/* dc_ui_multiline_focus(GTK_TEXT_VIEW(t), 0, NULL); */ /* NOT WORKING, meh, there will be no placeholder */ /* just so we set the placeholder, the most important part, otherwise the user will not even see the textview on some themes <3 */
}
G_MODULE_EXPORT void dc_ui_spawn_window (GtkToolButton * t, GtkWindow * w) {
	gtk_widget_show_all(GTK_WIDGET(w));
}
G_MODULE_EXPORT gboolean dc_ui_handle_close (GtkButton * b, gpointer u) {
	gtk_widget_hide(gtk_widget_get_toplevel(GTK_WIDGET(b)));
	return TRUE; /* so that it stays non-deleted, main window sould call/be handled with gtk_main_quit */
}
G_MODULE_EXPORT void dc_ui_reveal_password (GtkSwitch * t, gboolean s, GtkEntry * e) {
	gtk_entry_set_visibility(e, s);
}
void dc_ui_activate (GtkApplication * app, gpointer user_data) {
	GtkWidget * w;
	gchar * s;
	struct dc_ui_data d;
	d.b = gtk_builder_new_from_string(dc_ui_def, -1);
	w = GTK_WIDGET(gtk_builder_get_object(d.b, "dc_window_main"));
	gtk_builder_connect_signals(d.b, &d);
	/* začetek definicije dodatnih signalov */
	/* g_signal_connect(gtk_builder_get_object(b, "dc_settings_multiline"), "state-set", G_CALLBACK(dc_ui_set_multiline), b); */
	/* konec definicije dodatnih signalov */
#define dc_uacf "%s/%sdiscord.c", getenv("XDG_CONFIG_HOME") ? getenv("XDG_CONFIG_HOME") : getenv("HOME") ? getenv("HOME") : ".", getenv("XDG_CONFIG_HOME") ? "" : ".config/" /* as per XDG */
	gchar fn[snprintf(NULL, 0, dc_uacf)];
	sprintf(fn, dc_uacf);
	s = strrchr(fn, '/');
	s[0] = '\0';
	g_mkdir_with_parents(fn, 0700 /* as per XDG */);
	s[0] = '/';
	d.k = g_key_file_new();
	g_key_file_load_from_file(d.k, fn, G_KEY_FILE_KEEP_COMMENTS | G_KEY_FILE_KEEP_TRANSLATIONS, NULL);
	gtk_widget_show_all(w);
	dc_ui_set_multiline(NULL, g_key_file_get_boolean(d.k, "discord.c", "multiline", NULL), &d);
	dc_ui_inputbox_changed(NULL, &d);
	/* začetek aplikacije konfiguracijskih vrednosti v UI */
	gtk_switch_set_state(GTK_SWITCH(gtk_builder_get_object(d.b, "dc_settings_multiline")), g_key_file_get_boolean(d.k, "discord.c", "multiline", NULL));
	s = g_key_file_get_string(d.k, "discord.c", "login", NULL);
	gtk_entry_set_text(GTK_ENTRY(gtk_builder_get_object(d.b, "dc_settings_login")), s ? s : "");
	g_free(s);
	s = g_key_file_get_string(d.k, "discord.c", "password", NULL);
	gtk_entry_set_text(GTK_ENTRY(gtk_builder_get_object(d.b, "dc_settings_password")), s ? s : "");
	g_free(s);
	/* konec aplikacije konfiguracijskih vrednosti v UI */
	gtk_main();
	g_object_unref(d.b);
	if (!g_key_file_save_to_file(d.k, fn, NULL))
		g_warning("couldn't save config");
	g_key_file_free(d.k);
}
int dc_ui (int argc, char ** argv) {
	GtkApplication *app;
	int status;
	gtk_init(&argc, &argv);
	app = gtk_application_new("eu.sijanec.discord.c", G_APPLICATION_FLAGS_NONE);
	g_signal_connect(app, "activate", G_CALLBACK(dc_ui_activate), NULL);
	status = g_application_run(G_APPLICATION(app), argc, argv);
	g_object_unref(app);
	return status;
}