#include <atari.h>
#include <string.h>
#include <ctype.h>
#include "addrs.h"
#include "edbox.h"
#include "screen.h"
#include "irc.h"

#define COMP_S1   1
#define COMP_PM   2
#define COMP_CHAN 3

#define MAX_PM_NICKS 10

static char search_pos = 0, in_progress = 0;
static char prefix[33];

char comp_pm_nicks[MAX_PM_NICKS][25];
char (*list)[25] = comp_pm_nicks;

static char pm_nick_pos = 0; /* insertion point for _add() */

void comp_add_pm_nick(const char *n) {
	int i;

	for(i = 0; i < 25; i++)
		if(strncmp(n, comp_pm_nicks[i], 24) == 0)
			return;

	strncpy(comp_pm_nicks[pm_nick_pos], n, 24);
	pm_nick_pos++;
	pm_nick_pos %= MAX_PM_NICKS;
}

char match(const char *p, const char *q) {
	int len;

	len = strlen(prefix);
	if(!len) return 0;

	while(len--) {
		if(tolower(*p) != tolower(*q))
			return 0;
		p++, q++;
	}
	return 1;
}

void comp_complete_done(void) {
	in_progress = 0;
}

void comp_continue(void) {
	search_pos %= MAX_PM_NICKS;
	while(search_pos < MAX_PM_NICKS) {
		if(match(prefix, list[search_pos])) {
			edbox_set(list[search_pos]);
			search_pos++;
			return;
		}
		search_pos++;
	}
	edbox_set(prefix);
	comp_complete_done();
}

void comp_start(void) {
	if(scr_current != SCR_PRIV)
		return;

	/* just insert the last nick if there's nothing to search for */
	if(!edbox_len) {
		if(*last_pm_nick) edbox_set(last_pm_nick);
	} else {
		in_progress = COMP_PM;
		search_pos = 0;
		strncpy(prefix, edit_box, 24);
		list = comp_pm_nicks;
		comp_continue();
	}
}

void comp_complete(void) {
	if(in_progress)
		comp_continue();
	else
		comp_start();
}