/* ChanServ core functions
  *
  * (C) 2003-2022 Anope Team
  * Contact us at team@anope.org
  *
  * Please read COPYING and README for further details.
  *
  * Based on the original code of Epona by Lara.
  * Based on the original code of Services by Andy Church.
  */
 
 #include "module.h"
 #include "modules/suspend.h"
 
 struct CSSuspendInfo : SuspendInfo, Serializable
 {
 	CSSuspendInfo(Extensible *) : Serializable("CSSuspendInfo") { }
 
 	void Serialize(Serialize::Data &data) const anope_override
 	{
 		data["chan"] << what;
 		data["by"] << by;
 		data["reason"] << reason;
 		data["time"] << when;
 		data["expires"] << expires;
 	}
 
 	static Serializable* Unserialize(Serializable *obj, Serialize::Data &data)
 	{
 		Anope::string schan;
 		data["chan"] >> schan;
 
 		CSSuspendInfo *si;
 		if (obj)
 			si = anope_dynamic_static_cast<CSSuspendInfo *>(obj);
 		else
 		{
 			ChannelInfo *ci = ChannelInfo::Find(schan);
 			if (!ci)
 				return NULL;
 			si = ci->Extend<CSSuspendInfo>("CS_SUSPENDED");
 			data["chan"] >> si->what;
 		}
 
 		data["by"] >> si->by;
 		data["reason"] >> si->reason;
 		data["time"] >> si->when;
 		data["expires"] >> si->expires;
 		return si;
 	}
 };
 
 class CommandCSSuspend : public Command
 {
  public:
 	CommandCSSuspend(Module *creator) : Command(creator, "chanserv/suspend", 2, 3)
 	{
 		this->SetDesc(_("Prevent a channel from being used preserving channel data and settings"));
 		this->SetSyntax(_("\037channel\037 [+\037expiry\037] [\037reason\037]"));
 	}
 
 	void Execute(CommandSource &source, const std::vector<Anope::string> &params) anope_override
 	{
 		const Anope::string &chan = params[0];
 		Anope::string expiry = params[1];
 		Anope::string reason = params.size() > 2 ? params[2] : "";
 		time_t expiry_secs = Config->GetModule(this->owner)->Get<time_t>("expire");
 
 		if (!expiry.empty() && expiry[0] != '+')
 		{
 			reason = expiry + " " + reason;
 			reason.trim();
 			expiry.clear();
 		}
 		else
 		{
 			expiry_secs = Anope::DoTime(expiry);
 			if (expiry_secs < 0)
 			{
 				source.Reply(BAD_EXPIRY_TIME);
 				return;
 			}
 		}
 
 		if (Anope::ReadOnly)
 			source.Reply(READ_ONLY_MODE);
 
 		ChannelInfo *ci = ChannelInfo::Find(chan);
 		if (ci == NULL)
 		{
 			source.Reply(CHAN_X_NOT_REGISTERED, chan.c_str());
 			return;
 		}
 
 		if (ci->HasExt("CS_SUSPENDED"))
 		{
 			source.Reply(_("\002%s\002 is already suspended."), ci->name.c_str());
 			return;
 		}
 
 		CSSuspendInfo *si = ci->Extend<CSSuspendInfo>("CS_SUSPENDED");
 		si->what = ci->name;
 		si->by = source.GetNick();
 		si->reason = reason;
 		si->when = Anope::CurTime;
 		si->expires = expiry_secs ? expiry_secs + Anope::CurTime : 0;
 
 		if (ci->c)
 		{
 			std::vector<User *> users;
 
 			for (Channel::ChanUserList::iterator it = ci->c->users.begin(), it_end = ci->c->users.end(); it != it_end; ++it)
 			{
 				ChanUserContainer *uc = it->second;
 				User *user = uc->user;
 				if (!user->HasMode("OPER") && user->server != Me)
 					users.push_back(user);
 			}
 
 			for (unsigned i = 0; i < users.size(); ++i)
 				ci->c->Kick(NULL, users[i], "%s", !reason.empty() ? reason.c_str() : Language::Translate(users[i], _("This channel has been suspended.")));
 		}
 
 		Log(LOG_ADMIN, source, this, ci) << "(" << (!reason.empty() ? reason : "No reason") << "), expires on " << (expiry_secs ? Anope::strftime(Anope::CurTime + expiry_secs) : "never");
 		source.Reply(_("Channel \002%s\002 is now suspended."), ci->name.c_str());
 
 		FOREACH_MOD(OnChanSuspend, (ci));
 	}
 
 	bool OnHelp(CommandSource &source, const Anope::string &subcommand) anope_override
 	{
 		this->SendSyntax(source);
 		source.Reply(" ");
 		source.Reply(_("Disallows anyone from using the given channel.\n"
 				"May be cancelled by using the \002UNSUSPEND\002\n"
 				"command to preserve all previous channel data/settings.\n"
 				"If an expiry is given the channel will be unsuspended after\n"
 				"that period of time, else the default expiry from the\n"
 				"configuration is used.\n"
 				" \n"
 				"Reason may be required on certain networks."));
 		return true;
 	}
 };
 
 class CommandCSUnSuspend : public Command
 {
  public:
 	CommandCSUnSuspend(Module *creator) : Command(creator, "chanserv/unsuspend", 1, 1)
 	{
 		this->SetDesc(_("Releases a suspended channel"));
 		this->SetSyntax(_("\037channel\037"));
 	}
 
 	void Execute(CommandSource &source, const std::vector<Anope::string> &params) anope_override
 	{
 
 		if (Anope::ReadOnly)
 			source.Reply(READ_ONLY_MODE);
 
 		ChannelInfo *ci = ChannelInfo::Find(params[0]);
 		if (ci == NULL)
 		{
 			source.Reply(CHAN_X_NOT_REGISTERED, params[0].c_str());
 			return;
 		}
 
 		/* Only UNSUSPEND already suspended channels */
 		CSSuspendInfo *si = ci->GetExt<CSSuspendInfo>("CS_SUSPENDED");
 		if (!si)
 		{
 			source.Reply(_("Channel \002%s\002 isn't suspended."), ci->name.c_str());
 			return;
 		}
 
 		Log(LOG_ADMIN, source, this, ci) << "which was suspended by " << si->by << " for: " << (!si->reason.empty() ? si->reason : "No reason");
 
 		ci->Shrink<CSSuspendInfo>("CS_SUSPENDED");
 
 		source.Reply(_("Channel \002%s\002 is now released."), ci->name.c_str());
 
 		FOREACH_MOD(OnChanUnsuspend, (ci));
 
 		return;
 	}
 
 	bool OnHelp(CommandSource &source, const Anope::string &subcommand) anope_override
 	{
 		this->SendSyntax(source);
 		source.Reply(" ");
 		source.Reply(_("Releases a suspended channel. All data and settings\n"
 				"are preserved from before the suspension."));
 		return true;
 	}
 };
 
 class CSSuspend : public Module
 {
 	CommandCSSuspend commandcssuspend;
 	CommandCSUnSuspend commandcsunsuspend;
 	ExtensibleItem<CSSuspendInfo> suspend;
 	Serialize::Type suspend_type;
 	std::vector<Anope::string> show;
 
 	struct trim
 	{
 		Anope::string operator()(Anope::string s) const
 		{
 			return s.trim();
 		}
 	};
 
 	bool Show(CommandSource &source, const Anope::string &what) const
 	{
 		return source.IsOper() || std::find(show.begin(), show.end(), what) != show.end();
 	}
 
  public:
 	CSSuspend(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, VENDOR),
 		commandcssuspend(this), commandcsunsuspend(this), suspend(this, "CS_SUSPENDED"),
 		suspend_type("CSSuspendInfo", CSSuspendInfo::Unserialize)
 	{
 	}
 
 	void OnChanInfo(CommandSource &source, ChannelInfo *ci, InfoFormatter &info, bool show_hidden) anope_override
 	{
 		CSSuspendInfo *si = suspend.Get(ci);
 		if (!si)
 			return;
 
 		if (show_hidden || Show(source, "suspended"))
 			info[_("Suspended")] = _("This channel is \002suspended\002.");
 		if (!si->by.empty() && (show_hidden || Show(source, "by")))
 			info[_("Suspended by")] = si->by;
 		if (!si->reason.empty() && (show_hidden || Show(source, "reason")))
 			info[_("Suspend reason")] = si->reason;
 		if (si->when && (show_hidden || Show(source, "on")))
 			info[_("Suspended on")] = Anope::strftime(si->when, source.GetAccount());
 		if (si->expires && (show_hidden || Show(source, "expires")))
 			info[_("Suspension expires")] = Anope::strftime(si->expires, source.GetAccount());
 	}
 
 	void OnPreChanExpire(ChannelInfo *ci, bool &expire) anope_override
 	{
 		CSSuspendInfo *si = suspend.Get(ci);
 		if (!si)
 			return;
 
 		expire = false;
 
 		if (!si->expires)
 			return;
 
 		if (si->expires < Anope::CurTime)
 		{
 			ci->last_used = Anope::CurTime;
 			suspend.Unset(ci);
 
 			Log(this) << "Expiring suspend for " << ci->name;
 		}
 	}
 
 	EventReturn OnCheckKick(User *u, Channel *c, Anope::string &mask, Anope::string &reason) anope_override
 	{
 		if (u->HasMode("OPER") || !c->ci || !suspend.HasExt(c->ci))
 			return EVENT_CONTINUE;
 
 		reason = Language::Translate(u, _("This channel may not be used."));
 		return EVENT_STOP;
 	}
 
 	EventReturn OnChanDrop(CommandSource &source, ChannelInfo *ci) anope_override
 	{
 		CSSuspendInfo *si = suspend.Get(ci);
 		if (si && !source.HasCommand("chanserv/drop"))
 		{
 			source.Reply(CHAN_X_SUSPENDED, ci->name.c_str());
 			return EVENT_STOP;
 		}
 
 		return EVENT_CONTINUE;
 	}
 };
 
 MODULE_INIT(CSSuspend)

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