/* xchat 2.0 plugin: simple xdcc server example */

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

#ifndef WIN32
#include <unistd.h>
#endif

#include "xchat-plugin.h"
#include "../../src/common/xchat.h"

static xchat_plugin *ph;	/* plugin handle */

static int xdcc_on = 1;
static int xdcc_slots = 3;
static GSList *file_list = 0;

typedef struct fileoffer
{
	char *file;
	char *fullpath;
	char *desc;
	int downloads;
} fileoffer;


/* find the number of open dccs */

static int num_open_dccs(void)
{
	xchat_list *list;
	int num = 0;

	list = xchat_list_get(ph, "dcc");
	if(!list)
		return 0;

	while(xchat_list_next(ph, list))
	{
		/* check only ACTIVE dccs */
		if(xchat_list_int(ph, list, "status") == 1)
		{
			/* check only SEND dccs */
			if(xchat_list_int(ph, list, "type") == 0)
				num++;
		}
	}

	xchat_list_free(ph, list);

	return num;
}

static void xdcc_get(char *nick, char *host, char *arg)
{
	int num;
	GSList *list;
	fileoffer *offer;

	if(arg[0] == '#')
		arg++;

	num = atoi(arg);
	list = g_slist_nth(file_list, num - 1);
	if(!list)
	{
		xchat_commandf(ph, "quote NOTICE %s :No such file number #%d!", nick, num);
		return;
	}

	if(num_open_dccs() >= xdcc_slots)
	{
		xchat_commandf(ph, "quote NOTICE %s :All slots full. Try again later.", nick);
		return;
	}

	offer = (fileoffer *) list->data;
	offer->downloads++;
	xchat_commandf(ph, "quote NOTICE %s :Sending offer #%d %s", nick, num, offer->file);
	xchat_commandf(ph, "dcc send %s %s", nick, offer->fullpath);
}

static void xdcc_del(char *name)
{
	GSList *list;
	fileoffer *offer;

	list = file_list;
	while(list)
	{
		offer = (fileoffer *) list->data;
		if(strcasecmp(name, offer->file) == 0)
		{
			file_list = g_slist_remove(file_list, offer);
			xchat_printf(ph, "%s [%s] removed.\n", offer->file, offer->fullpath);
			free(offer->file);
			free(offer->desc);
			free(offer->fullpath);
			free(offer);
			return;
		}
		list = list->next;
	}
}

static void xdcc_add(char *name, char *fullpath, char *desc, int dl)
{
	fileoffer *offer;

	offer = (fileoffer *) malloc(sizeof(fileoffer));
	offer->file = strdup(name);
	offer->desc = strdup(desc);
	offer->fullpath = strdup(fullpath);
	offer->downloads = dl;

	file_list = g_slist_append(file_list, offer);
}

static void xdcc_list(char *nick, char *host, char *arg, char *cmd)
{
	GSList *list;
	int i = 0;
	fileoffer *offer;

	xchat_commandf(ph, "%s %s :XDCC List:", cmd, nick);
	list = file_list;
	while(list)
	{
		i++;
		offer = (fileoffer *) list->data;
		xchat_commandf(ph, "%s %s :[#%d] %s - %s [%d dl]", cmd,
							nick, i, offer->file, offer->desc, offer->downloads);
		list = list->next;
	}

	if(i == 0)
		xchat_commandf(ph, "%s %s :- list empty.", cmd, nick);
	else
		xchat_commandf(ph, "%s %s :%d files listed.", cmd, nick, i);
}

static int xdcc_command(char *word[], char *word_eol[], void *userdata)
{
	if(strcasecmp(word[2], "ADD") == 0)
	{
		if(!word_eol[5][0])
			xchat_print(ph, "Syntax: /XDCC ADD <name> <path> <description>\n");
		else
		{
			if(access(word[4], R_OK) == 0)
			{
				xdcc_add(word[3], word[4], word_eol[5], 0);
				xchat_printf(ph, "%s [%s] added.\n", word[3], word[4]);
			}
			else
				xchat_printf(ph, "Cannot read %s\n", word[4]);
		}
		return XCHAT_EAT_XCHAT;
	}

	if(strcasecmp(word[2], "DEL") == 0)
	{
		xdcc_del(word[3]);
		return XCHAT_EAT_XCHAT;
	}

	if(strcasecmp(word[2], "SLOTS") == 0)
	{
		if(word[3][0])
		{
			xdcc_slots = atoi(word[3]);
			xchat_printf(ph, "XDCC slots set to %d\n", xdcc_slots);
		} else
		{
			xchat_printf(ph, "XDCC slots: %d\n", xdcc_slots);
		}
		return XCHAT_EAT_XCHAT;
	}

	if(strcasecmp(word[2], "ON") == 0)
	{
		xdcc_on = TRUE;
		xchat_print(ph, "XDCC now ON\n");
		return XCHAT_EAT_XCHAT;
	}

	if(strcasecmp(word[2], "LIST") == 0)
	{
		xdcc_list("", "", "", "echo");
		return XCHAT_EAT_XCHAT;
	}

	if(strcasecmp(word[2], "OFF") == 0)
	{
		xdcc_on = FALSE;
		xchat_print(ph, "XDCC now OFF\n");
		return XCHAT_EAT_XCHAT;
	}

	xchat_print(ph, "Syntax: XDCC ADD <name> <fullpath> <description>\n"
						 "        XDCC DEL <name>\n"
						 "        XDCC SLOTS <number>\n"
						 "        XDCC LIST\n"
						 "        XDCC ON\n"
						 "        XDCC OFF\n\n");

	return XCHAT_EAT_XCHAT;
}

static void xdcc_remote(char *from, char *msg)
{
  	char *ex, *nick, *host;

	ex = strchr(from, '!');
	if(!ex)
		return;
	ex[0] = 0;
	nick = from;
	host = ex + 1;

	if(xdcc_on == 0)
	{<style>pre { line-height: 125%; }
td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .ges { font-weight: bold; font-style: italic } /* Generic.EmphStrong */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: