#include "shared_task_manager.h"
#include "cliententry.h"
#include "clientlist.h"
#include "dynamic_zone.h"
#include "dynamic_zone_manager.h"
#include "zonelist.h"
#include "zoneserver.h"
#include "shared_task_world_messaging.h"
#include "../common/rulesys.h"
#include "../common/repositories/character_data_repository.h"
#include "../common/repositories/character_task_timers_repository.h"
#include "../common/repositories/shared_task_members_repository.h"
#include "../common/repositories/shared_task_activity_state_repository.h"
#include "../common/repositories/completed_shared_tasks_repository.h"
#include "../common/repositories/completed_shared_task_members_repository.h"
#include "../common/repositories/completed_shared_task_activity_state_repository.h"
#include "../common/repositories/shared_task_dynamic_zones_repository.h"
#include <ctime>

extern ClientList client_list;
extern ZSList     zoneserver_list;

SharedTaskManager::SharedTaskManager()
	: m_process_timer{ static_cast<uint32_t>(RuleI(TaskSystem, SharedTasksWorldProcessRate)) }
{
}

SharedTaskManager *SharedTaskManager::SetDatabase(Database *db)
{
	SharedTaskManager::m_database = db;

	return this;
}

SharedTaskManager *SharedTaskManager::SetContentDatabase(Database *db)
{
	SharedTaskManager::m_content_database = db;

	return this;
}

void SharedTaskManager::AttemptSharedTaskCreation(
	uint32 requested_task_id,
	uint32 requested_character_id,
	uint32 npc_type_id
)
{
	auto task = GetSharedTaskDataByTaskId(requested_task_id);
	if (task.id != 0 && task.type == TASK_TYPE_SHARED) {
		LogTasksDetail(
			"Found Shared Task ({}) [{}]",
			requested_task_id,
			task.title
		);
	}

	// shared task validation
	// todo: this should be online group/raid members only (avoid queries)
	auto request = SharedTask::GetRequestCharacters(*m_database, requested_character_id);
	if (!CanRequestSharedTask(task.id, request)) {
		LogTasksDetail("Shared task validation failed");
		return;
	}

	for (auto& m: request.members) {
		LogTasksDetail("Request Members [{}]", m.character_name);
 	}

	// new shared task instance
	auto new_shared_task = SharedTask{};
	auto activities      = TaskActivitiesRepository::GetWhere(*m_content_database, fmt::format("taskid = {}", task.id));

	// new shared task db object
	auto shared_task_entity = SharedTasksRepository::NewEntity();
	shared_task_entity.task_id       = (int) requested_task_id;
	shared_task_entity.accepted_time = static_cast<int>(std::time(nullptr));
	shared_task_entity.expire_time   = task.duration > 0 ? (std::time(nullptr) + task.duration) : 0;

	auto created_db_shared_task = SharedTasksRepository::InsertOne(*m_database, shared_task_entity);

	// active record
	new_shared_task.SetDbSharedTask(created_db_shared_task);

	// request timer lockouts
	std::vector<CharacterTaskTimersRepository::CharacterTaskTimers> task_timers;
	task_timers.reserve(request.members.size());

	// persist members
	std::vector<SharedTaskMembersRepository::SharedTaskMembers> shared_task_db_members = {};
	shared_task_db_members.reserve(request.members.size());
	for (auto &m: request.members) {
		auto e = SharedTaskMembersRepository::NewEntity();

		e.character_id   = m.character_id;
		e.is_leader      = (m.is_leader ? 1 : 0);
		e.shared_task_id = new_shared_task.GetDbSharedTask().id;

		shared_task_db_members.emplace_back(e);

		new_shared_task.AddCharacterToMemberHistory(m.character_id); // memory member history

		if (task.request_timer_seconds > 0) {
			auto timer = CharacterTaskTimersRepository::NewEntity();
			timer.character_id = m.character_id;
			timer.task_id      = task.id;
			timer.timer_type   = static_cast<int>(TaskTimerType::Request);
			timer.timer_group  = task.request_timer_group;
			timer.expire_time  = shared_task_entity.accepted_time + task.request_timer_seconds;

			task_timers.emplace_back(timer);
		}
	}

	SharedTaskMembersRepository::InsertMany(*m_database, shared_task_db_members);

	if (!task_timers.empty()) {
		CharacterTaskTimersRepository::InsertMany(*m_database, task_timers);
	}

	// activity state (memory)
	std::vector<SharedTaskActivityStateEntry> shared_task_activity_state = {};
	shared_task_activity_state.reserve(activities.size());
	for (auto &a: activities) {

		// entry
		auto e = SharedTaskActivityStateEntry{};
		e.activity_id    = a.activityid;
		e.done_count     = 0;
		e.max_done_count = a.goalcount;
		e.step           = a.step;
		e.optional       = a.optional;
		e.req_activity_id = a.req_activity_id;
		e.activity_state = ActivityState::ActivityHidden;

		shared_task_activity_state.emplace_back(e);
	}

	// activity state (database)
	std::vector<SharedTaskActivityStateRepository::SharedTaskActivityState> shared_task_db_activities = {};
	shared_task_db_activities.reserve(activities.size());
	for (auto &a: activities) {

		// entry
		auto e = SharedTaskActivityStateRepository::NewEntity();
		e.shared_task_id = new_shared_task.GetDbSharedTask().id;
		e.activity_id    = a.activityid;
		e.done_count     = 0;

		shared_task_db_activities.emplace_back(e);
	}

	SharedTaskActivityStateRepository::InsertMany(*m_database, shared_task_db_activities);

	// state
	new_shared_task.SetSharedTaskActivityState(shared_task_activity_state);

	// set database data in memory to make it easier for any later referencing
	new_shared_task.SetTaskData(task);
	new_shared_task.SetTaskActivityData(activities);
	new_shared_task.SetMembers(request.members);

	// add to shared tasks list
	auto& inserted = m_shared_tasks.emplace_back(new_shared_task);

	// send accept to members
	for (auto &m: request.members) {
		// only requester (leader) receives back the npc context to trigger task accept event
		uint32_t npc_context_id = m.character_id == requested_character_id ? npc_type_id : 0;
		SendAcceptNewSharedTaskPacket(
			m.character_id,
			requested_task_id,
			npc_context_id,
			shared_task_entity.accepted_time
		);
	}
	SendSharedTaskMemberListToAllMembers(&new_shared_task);

	// check if task should immediately lock
	HandleCompletedActivities(&inserted);

	LoadDynamicZoneTemplate(&inserted);

	LogTasks(
		"shared_task_id [{}] created successfully | task_id [{}] member_count [{}] activity_count [{}] current tasks in state [{}]",
		new_shared_task.GetDbSharedTask().id,
		task.id,
		request.members.size(),
		shared_task_activity_state.size(),
		m_shared_tasks.size()
	);
}

void SharedTaskManager::RemoveMember(SharedTask* s, const SharedTaskMember& member, bool remove_from_db)
{
	LogTasksDetail("shared_task_id [{}] member [{}]", s->GetDbSharedTask().id, member.character_name);

	RemovePlayerFromSharedTask(s, member.character_id);
	SendRemovePlayerFromSharedTaskPacket(member.character_id, s->GetDbSharedTask().task_id, remove_from_db);

	SendSharedTaskMemberRemovedToAllMembers(s, member.character_name);

	client_list.SendCharacterMessageID(member.character_id, Chat::Yellow,
		TaskStr::PLAYER_REMOVED, {member.character_name, s->GetTaskData().title});

	if (member.is_leader) {
		ChooseNewLeader(s);
	}

	// todo: filter requirements
	if (s->GetMembers().size() < s->GetTaskData().min_players)
	{
		SendMembersMessageID(s, Chat::Red, TaskStr::MIN_PLAYERS);
		StartTerminateTimer(s);
	}
}

void SharedTaskManager::RemoveEveryoneFromSharedTask(SharedTask *t, uint32 requested_character_id)
{
	// caller validates leader
	LogTasksDetail("Leader [{}]", requested_character_id);

	// inform clients of removal
	for (auto &m: t->GetMembers()) {
		LogTasksDetail(
			"Sending removal to [{}] task_id [{}]",
			m.character_id,
			t->GetTaskData().id
		);

		SendRemovePlayerFromSharedTaskPacket(m.character_id, t->GetTaskData().id, true);

		client_list.SendCharacterMessageID(m.character_id, Chat::Yellow, TaskStr::YOU_REMOVED, {t->GetTaskData().title});
	}

	client_list.SendCharacterMessageID(requested_character_id, Chat::Red, TaskStr::PLAYER_REMOVED, {"Everyone", t->GetTaskData().title});

	RemoveAllMembersFromDynamicZones(t);

	// persistence
	DeleteSharedTask(t->GetDbSharedTask().id);

	PrintSharedTaskState();
}

void SharedTaskManager::Terminate(SharedTask& s, bool send_fail, bool erase)
{
	LogTasksDetail("shared task [{}]", s.GetDbSharedTask().id);
	for (const auto& member : s.GetMembers())
	{
		if (send_fail)
		{
			SendSharedTaskFailed(member.character_id, s.GetTaskData().id);
		}
		SendRemovePlayerFromSharedTaskPacket(member.character_id, s.GetTaskData().id, true);
		client_list.SendCharacterMessageID(member.character_id, Chat::Yellow, TaskStr::HAS_ENDED, {s.GetTaskData().title});
	}

	RemoveAllMembersFromDynamicZones(&s);

	if (erase)
	{
		DeleteSharedTask(s.GetDbSharedTask().id);
	}
}

void SharedTaskManager::DeleteSharedTask(int64 shared_task_id)
{
	LogTasksDetail(
		"shared_task_id [{}]",
		shared_task_id
	);

	// remove internally
	m_shared_tasks.erase(
		std::remove_if(
			m_shared_tasks.begin(),
			m_shared_tasks.end(),
			[&](SharedTask const &s) {
				return s.GetDbSharedTask().id == shared_task_id;
			}
		),
		m_shared_tasks.end()
	);

	// database
	SharedTasksRepository::DeleteWhere(*m_database, fmt::format("id = {}", shared_task_id));
	SharedTaskMembersRepository::DeleteWhere(*m_database, fmt::format("shared_task_id = {}", shared_task_id));
	SharedTaskActivityStateRepository::DeleteWhere(*m_database, fmt::format("shared_task_id = {}", shared_task_id));
	SharedTaskDynamicZonesRepository::DeleteWhere(*m_database, fmt::format("shared_task_id = {}", shared_task_id));
}

void SharedTaskManager::LoadSharedTaskState()
{
	LogTasksDetail("Restoring state from the database");

	// load shared tasks
	std::vector<SharedTask> shared_tasks = {};

	// eager load all activity state data
	auto shared_tasks_activity_state_data = SharedTaskActivityStateRepository::All(*m_database);

	// eager load all member state data
	auto shared_task_members_data = SharedTaskMembersRepository::All(*m_database);

	// load character data for member names
	std::vector<CharacterDataRepository::CharacterData> shared_task_character_data;
	if (!shared_task_members_data.empty()) {
		std::vector<uint32_t> character_ids;
		for (const auto       &m: shared_task_members_data) {
			character_ids.emplace_back(m.character_id);
		}

		shared_task_character_data = CharacterDataRepository::GetWhere(
			*m_database,
			fmt::format("id IN ({})", Strings::Join(character_ids, ","))
		);
	}

	auto shared_task_dynamic_zones_data = SharedTaskDynamicZonesRepository::All(*m_database);

	// load shared tasks not already completed
	auto st = SharedTasksRepository::GetWhere(*m_database, "TRUE");
	shared_tasks.reserve(st.size());
	for (auto &s: st) {
		SharedTask ns = {};

		LogTasksDetail(
			"Loading shared_task_id [{}] task_id [{}]",
			s.id,
			s.task_id
		);

		// shared task db data
		ns.SetDbSharedTask(s);

		// set database task data for internal referencing
		auto task_data = GetSharedTaskDataByTaskId(s.task_id);

		LogTasksDetail("[GetSharedTaskDataByTaskId] task_id [{}]", task_data.id);

		ns.SetTaskData(task_data);

		// set database task data for internal referencing
		auto activities_data = GetSharedTaskActivityDataByTaskId(s.task_id);
		ns.SetTaskActivityData(activities_data);

		// load activity state into memory
		std::vector<SharedTaskActivityStateEntry> shared_task_activity_state = {};

		// loop through shared task activity state data referencing from memory instead of
		// querying inside this loop each time
		for (auto &sta: shared_tasks_activity_state_data) {

			// filter by current shared task id
			if (sta.shared_task_id == s.id) {

				auto e = SharedTaskActivityStateEntry{};
				e.activity_id = sta.activity_id;
				e.done_count  = sta.done_count;

				// get max done count from activities data
				// loop through activities data in memory and grep on task_id, activity_id to pull goalcount
				for (auto &ad: activities_data) {
					if (ad.taskid == s.task_id && ad.activityid == sta.activity_id) {
						LogTasksDetail(
							"shared_task_id [{}] task_id [{}] activity_id [{}] done_count [{}] max_done_count (goalcount) [{}]",
							s.id,
							s.task_id,
							sta.activity_id,
							e.done_count,
							ad.goalcount
						);

						e.max_done_count = ad.goalcount;
						e.completed_time = sta.completed_time;
						e.updated_time   = sta.updated_time;
						e.step           = ad.step;
						e.optional       = ad.optional;
						e.req_activity_id = ad.req_activity_id;
						e.activity_state = sta.completed_time > 0 ? ActivityCompleted : ActivityHidden;
					}
				}

				shared_task_activity_state.emplace_back(e);
			}
		}

		ns.SetSharedTaskActivityState(shared_task_activity_state);

		// members
		std::vector<SharedTaskMember> shared_task_members = {};
		for (auto                     &m: shared_task_members_data) {
			if (m.shared_task_id == s.id) {
				SharedTaskMember member = {};
				member.character_id = m.character_id;
				member.is_leader    = (m.is_leader ? 1 : 0);

				auto it = std::find_if(
					shared_task_character_data.begin(), shared_task_character_data.end(),
					[&](const CharacterDataRepository::CharacterData &character) {
						return character.id == m.character_id;
					}
				);

				if (it != shared_task_character_data.end()) {
					member.character_name = it->name;
				}

				shared_task_members.emplace_back(member);

				LogTasksDetail(
					"shared_task_id [{}] adding member character_id [{}] character_name [{}] is_leader [{}]",
					s.id,
					member.character_id,
					member.character_name,
					member.is_leader
				);

				// add member to history (if restoring state from a world restart we lost real past member history)
				ns.AddCharacterToMemberHistory(m.character_id);
			}
		}

		ns.SetMembers(shared_task_members);

		// dynamic zones
		for (const auto &dz_entry : shared_task_dynamic_zones_data) {
			if (dz_entry.shared_task_id == s.id) {
				ns.dynamic_zone_ids.emplace_back(static_cast<uint32_t>(dz_entry.dynamic_zone_id));

				LogTasksDetail(
					"shared_task_id [{}] adding dynamic_zone_id [{}]",
					s.id,
					dz_entry.dynamic_zone_id
				);
			}
		}

		LogTasks(
			"Loaded shared task state | shared_task_id [{}] task_id [{}] task_title [{}] member_count [{}] state_activity_count [{}]",
			s.id,
			task_data.id,
			task_data.title,
			ns.GetMembers().size(),
			ns.GetActivityState().size()
		);

		shared_tasks.emplace_back(ns);
	}

	SetSharedTasks(shared_tasks);

	LogTasks(
		"Loaded [{}] shared tasks",
		m_shared_tasks.size()
	);

	PrintSharedTaskState();
}

SharedTaskManager *SharedTaskManager::LoadTaskData()
{
	m_task_data          = TasksRepository::GetWhere(*m_content_database, "enabled = 1");
	m_task_activity_data = TaskActivitiesRepository::All(*m_content_database);

	LogTasks("Loaded tasks [{}] activities [{}]", m_task_data.size(), m_task_activity_data.size());

	return this;
}

TasksRepository::Tasks SharedTaskManager::GetSharedTaskDataByTaskId(uint32 task_id)
{
	for (auto &t: m_task_data) {
		if (t.id == task_id && t.type == TASK_TYPE_SHARED) {
			return t;
		}
	}

	return TasksRepository::NewEntity();
}

std::vector<TaskActivitiesRepository::TaskActivities>
SharedTaskManager::GetSharedTaskActivityDataByTaskId(uint32 task_id)
{
	std::vector<TaskActivitiesRepository::TaskActivities> activities = {};

	for (auto &a: m_task_activity_data) {
		if (a.taskid == task_id) {
			activities.emplace_back(a);
		}
	}

	return activities;
}

void SharedTaskManager::SharedTaskActivityUpdate(
	uint32 source_character_id,
	uint32 task_id,
	uint32 activity_id,
	uint32 done_count,
	bool ignore_quest_update
)
{
	auto shared_task = FindSharedTaskByTaskIdAndCharacterId(task_id, source_character_id);
	if (shared_task) {
		LogTasksDetail(
			"shared_task_id [{}] character_id [{}] task_id [{}] activity_id [{}] done_count [{}]",
			shared_task->GetDbSharedTask().id,
			source_character_id,
			task_id,
			activity_id,
			done_count
		);

		for (auto &a : shared_task->m_shared_task_activity_state) {
			if (a.activity_id == activity_id) {

				// discard updates out of bounds
				if (a.done_count == a.max_done_count) {
					LogTasksDetail(
						"done_count [{}] is greater than max [{}] discarding...",
						done_count,
						a.max_done_count
					);
					return;
				}

				// if we are progressing
				if (a.done_count < done_count) {
					LogTasksDetail(
						"Propagating update for shared_task_id [{}] character_id [{}] task_id [{}] activity_id [{}] old_done_count [{}] new_done_count [{}]",
						shared_task->GetDbSharedTask().id,
						source_character_id,
						task_id,
						activity_id,
						a.done_count,
						done_count
					);

					a.done_count   = done_count;
					a.updated_time = std::time(nullptr);

					// if the update came in larger than the max for whatever reason, clamp
					if (a.done_count > a.max_done_count) {
						a.done_count = a.max_done_count;
					}

					// if the activity is done, lets mark it as such
					if (a.done_count == a.max_done_count) {
						a.completed_time = std::time(nullptr);
						a.activity_state = ActivityState::ActivityCompleted;
					}

					// sync state as each update comes in (for now)
					SaveSharedTaskActivityState(
						shared_task->GetDbSharedTask().id,
						shared_task->m_shared_task_activity_state
					);

					shared_task->SetSharedTaskActivityState(shared_task->m_shared_task_activity_state);

					LogTasksDetail(
						"Debug done_count [{}]",
						a.done_count
					);

					// loop through members - send update
					for (auto &m: shared_task->GetMembers()) {

						// confirm task update to client(s)
						auto p = std::make_unique<ServerPacket>(
							ServerOP_SharedTaskUpdate,
							sizeof(ServerSharedTaskActivityUpdate_Struct)
						);

						auto d = reinterpret_cast<ServerSharedTaskActivityUpdate_Struct *>(p->pBuffer);
						d->source_character_id = m.character_id;
						d->task_id             = task_id;
						d->activity_id         = activity_id;
						d->done_count          = done_count;
						d->ignore_quest_update = ignore_quest_update;

						// get requested character zone server
						ClientListEntry *c = client_list.FindCLEByCharacterID(m.character_id);
						if (c && c->Server()) {
							c->Server()->SendPacket(p.get());
						}
					}

					break;
				}

				LogTasksDetail(
					"Discarding duplicate update for shared_task_id [{}] character_id [{}] task_id [{}] activity_id [{}] done_count [{}] ignore_quest_update [{}]",
					shared_task->GetDbSharedTask().id,
					source_character_id,
					task_id,
					activity_id,
					done_count,
					(ignore_quest_update ? "true" : "false")
				);
			}
		}

		// handle task locking and completion
		bool is_shared_task_completed = HandleCompletedActivities(shared_task);
		if (is_shared_task_completed) {
			HandleCompletedTask(shared_task);
		}
	}
}

SharedTask *SharedTaskManager::FindSharedTaskByTaskIdAndCharacterId(uint32 task_id, uint32 character_id)
{
	for (auto &s: m_shared_tasks) {
		// grep for task
		if (s.GetTaskData().id == task_id) {
			// find member in shared task
			for (auto &m: s.GetMembers()) {
				if (m.character_id == character_id) {
					return &s;
				}
			}
		}
	}

	return nullptr;
}

void SharedTaskManager::SaveSharedTaskActivityState(
	int64 shared_task_id,
	std::vector<SharedTaskActivityStateEntry> activity_state
)
{
	// transfer from memory to database
	std::vector<SharedTaskActivityStateRepository::SharedTaskActivityState> shared_task_db_activities = {};
	shared_task_db_activities.reserve(activity_state.size());

	for (auto &a: activity_state) {

		// entry
		auto e = SharedTaskActivityStateRepository::NewEntity();
		e.shared_task_id = shared_task_id;
		e.activity_id    = (int) a.activity_id;
		e.done_count     = (int) a.done_count;
		e.completed_time = (int) a.completed_time;
		e.updated_time   = (int) a.updated_time;

		shared_task_db_activities.emplace_back(e);
	}

	SharedTaskActivityStateRepository::DeleteWhere(*m_database, fmt::format("shared_task_id = {}", shared_task_id));
	SharedTaskActivityStateRepository::InsertMany(*m_database, shared_task_db_activities);
}

bool SharedTaskManager::IsSharedTaskLeader(SharedTask *s, uint32 character_id)
{
	for (auto &m: s->GetMembers()) {
		if (m.character_id == character_id && m.is_leader) {
			return true;
		}
	}

	return false;
}

void SharedTaskManager::SendAcceptNewSharedTaskPacket(
	uint32 character_id,
	uint32 task_id,
	uint32_t npc_context_id,
	int accept_time
)
{
	auto p = std::make_unique<ServerPacket>(
		ServerOP_SharedTaskAcceptNewTask,
		sizeof(ServerSharedTaskRequest_Struct)
	);

	auto d = reinterpret_cast<ServerSharedTaskRequest_Struct *>(p->pBuffer);
	d->requested_character_id = character_id;
	d->requested_task_id      = task_id;
	d->requested_npc_type_id  = npc_context_id;
	d->accept_time            = accept_time;

	// get requested character zone server
	ClientListEntry *cle = client_list.FindCLEByCharacterID(character_id);
	if (cle && cle->Server()) {
		cle->Server()->SendPacket(p.get());
	}
}

void SharedTaskManager::SendRemovePlayerFromSharedTaskPacket(
	uint32 character_id,
	uint32 task_id,
	bool remove_from_db
)
{
	// confirm shared task request: inform clients
	auto p = std::make_unique<ServerPacket>(ServerOP_SharedTaskQuit, sizeof(ServerSharedTaskQuit_Struct));

	auto d = reinterpret_cast<ServerSharedTaskQuit_Struct *>(p->pBuffer);
	d->requested_character_id = character_id;
	d->task_id                = task_id;
	d->remove_from_db         = remove_from_db;

	// get requested character zone server
	ClientListEntry *cle = client_list.FindCLEByCharacterID(character_id);
	if (cle && cle->Server()) {
		cle->Server()->SendPacket(p.get());
	}
}

void SharedTaskManager::SendSharedTaskFailed(uint32_t character_id, uint32_t task_id)
{
	ServerPacket pack(ServerOP_SharedTaskFailed, sizeof(ServerSharedTaskCharacterTask_Struct));
	auto buf = reinterpret_cast<ServerSharedTaskCharacterTask_Struct*>(pack.pBuffer);
	buf->character_id = character_id;
	buf->task_id = task_id;

	ClientListEntry* cle = client_list.FindCLEByCharacterID(character_id);
	if (cle && cle->Server())
	{
		cle->Server()->SendPacket(&pack);
	}
}

void SharedTaskManager::SendSharedTaskMemberList(uint32 character_id, const std::vector<SharedTaskMember> &members)
{
	EQ::Net::DynamicPacket dyn_pack;
	dyn_pack.PutSerialize(0, members);

	SendSharedTaskMemberList(character_id, dyn_pack);
}

void SharedTaskManager::SendSharedTaskMemberList(uint32 character_id, const EQ::Net::DynamicPacket &serialized_members)
{
	// send member list packet
	auto p = std::make_unique<ServerPacket>(
		ServerOP_SharedTaskMemberlist,
		sizeof(ServerSharedTaskMemberListPacket_Struct) + serialized_members.Length()
	);

	auto d = reinterpret_cast<ServerSharedTaskMemberListPacket_Struct *>(p->pBuffer);
	d->destination_character_id = character_id;
	d->cereal_size              = static_cast<uint32_t>(serialized_members.Length());
	memcpy(d->cereal_serialized_members, serialized_members.Data(), serialized_members.Length());

	// send memberlist
	ClientListEntry *cle = client_list.FindCLEByCharacterID(character_id);
	if (cle && cle->Server()) {
		cle->Server()->SendPacket(p.get());
	}
}

void SharedTaskManager::SendSharedTaskMemberChange(
	uint32 character_id,
	int64 shared_task_id,
	const std::string &player_name,
	bool removed
)
{
	uint32_t size = sizeof(ServerSharedTaskMemberChangePacket_Struct);
	auto     p    = std::make_unique<ServerPacket>(ServerOP_SharedTaskMemberChange, size);

	auto d = reinterpret_cast<ServerSharedTaskMemberChangePacket_Struct *>(p->pBuffer);
	d->destination_character_id = character_id;
	d->shared_task_id           = shared_task_id;
	d->removed                  = removed;
	strn0cpy(d->player_name, player_name.c_str(), sizeof(d->player_name));

	ClientListEntry *cle = client_list.FindCLEByCharacterID(character_id);
	if (cle && cle->Server()) {
		cle->Server()->SendPacket(p.get());
	}
}

void SharedTaskManager::RemovePlayerFromSharedTask(SharedTask *s, uint32 character_id)
{
	SharedTaskMembersRepository::DeleteWhere(
		*m_database,
		fmt::format(
			"shared_task_id = {} and character_id = {}",
			s->GetDbSharedTask().id,
			character_id
		)
	);

	// remove internally
	s->m_members.erase(
		std::remove_if(
			s->m_members.begin(),
			s->m_members.end(),
			[&](SharedTaskMember const &m) {
				return m.character_id == character_id;
			}
		),
		s->m_members.end()
	);

	for (const auto &dz_id : s->dynamic_zone_ids) {
		auto dz = DynamicZone::FindDynamicZoneByID(dz_id);
		if (dz) {
			dz->RemoveMember(character_id);
		}
	}
}

void SharedTaskManager::PrintSharedTaskState()
{
	for (auto &s: m_shared_tasks) {
		auto task = GetSharedTaskDataByTaskId(s.GetDbSharedTask().task_id);

		LogTasksDetail("# Shared Task");

		LogTasksDetail(
			"shared_task_id [{}] task_id [{}] task_title [{}] member_count [{}] state_activity_count [{}]",
			s.GetDbSharedTask().id,
			task.id,
			task.title,
			s.GetMembers().size(),
			s.GetActivityState().size()
		);

		LogTasksDetail("# Activities");

		// activity state
		for (auto &a: s.m_shared_task_activity_state) {
			LogTasksDetail(
				"-- activity_id [{}] done_count [{}] max_done_count [{}] completed_time [{}]",
				a.activity_id,
				a.done_count,
				a.max_done_count,
				a.completed_time
			);
		}

		LogTasksDetail("# Members");

		// members
		for (auto &m: s.m_members) {
			LogTasksDetail(
				"-- character_id [{}] is_leader [{}]",
				m.character_id,
				m.is_leader
			);
		}

		LogTasksDetail("# Dynamic Zones");

		for (auto &dz_id: s.dynamic_zone_ids) {
			LogTasksDetail(
				"-- dynamic_zone_id [{}]",
				dz_id
			);
		}
	}
}

void SharedTaskManager::SendSharedTaskMemberListToAllMembers(SharedTask *s)
{
	// serialize once so we don't re-serialize it for every member
	EQ::Net::DynamicPacket dyn_pack;
	dyn_pack.PutSerialize(0, s->GetMembers());

	for (auto &m: s->GetMembers()) {
		SendSharedTaskMemberList(
			m.character_id,
			dyn_pack
		);
	}
}

void SharedTaskManager::SendSharedTaskMemberAddedToAllMembers(SharedTask *s, const std::string &player_name)
{
	for (const auto &m : s->GetMembers()) {
		SendSharedTaskMemberChange(m.character_id, s->GetDbSharedTask().id, player_name, false);
	}
}

void SharedTaskManager::SendSharedTaskMemberRemovedToAllMembers(SharedTask *s, const std::string &player_name)
{
	for (const auto &m : s->GetMembers()) {
		SendSharedTaskMemberChange(m.character_id, s->GetDbSharedTask().id, player_name, true);
	}
}

void SharedTaskManager::MakeLeaderByPlayerName(SharedTask *s, const std::string &character_name)
{
	auto new_leader = s->FindMemberFromCharacterName(character_name);
	if (new_leader.character_id == 0) {
		SendLeaderMessageID(s, Chat::Red, TaskStr::IS_NOT_MEMBER, {character_name});
		return;
	}

	bool found_new_leader = false;

	std::vector<SharedTaskMember> members = s->GetMembers();
	for (auto                     &m: members) {
		LogTasksDetail(
			"character_id [{}] m.character_id [{}]",
			new_leader.character_id,
			m.character_id
		);

		m.is_leader = false;

		// destination character is in shared task, make swap
		if (new_leader.character_id == m.character_id) {
			found_new_leader = true;
			LogTasksDetail(
				"shared_task_id [{}] character_name [{}]",
				s->GetDbSharedTask().id,
				character_name
			);

			m.is_leader = true;
		}
	}

	if (found_new_leader) {
		s->SetMembers(members);
		SaveMembers(s, members);
		SendSharedTaskMemberListToAllMembers(s);
		SendMembersMessageID(s, Chat::Yellow, TaskStr::PLAYER_NOW_LEADER, {new_leader.character_name, s->GetTaskData().title});

		for (const auto &dz_id : s->dynamic_zone_ids) {
			auto dz = DynamicZone::FindDynamicZoneByID(dz_id);
			if (dz) {
				dz->SetNewLeader(static_cast<uint32_t>(new_leader.character_id));
			}
		}
	}
}

void SharedTaskManager::SaveMembers(SharedTask *s, std::vector<SharedTaskMember> members)
{
	std::vector<SharedTaskMembersRepository::SharedTaskMembers> dm = {};
	dm.reserve(members.size());
	for (auto &m: members) {
		auto e = SharedTaskMembersRepository::NewEntity();

		e.character_id   = m.character_id;
		e.is_leader      = (m.is_leader ? 1 : 0);
		e.shared_task_id = s->GetDbSharedTask().id;

		dm.emplace_back(e);
	}

	SharedTaskMembersRepository::DeleteWhere(*m_database, fmt::format("shared_task_id = {}", s->GetDbSharedTask().id));
	SharedTaskMembersRepository::InsertMany(*m_database, dm);
}

void SharedTaskManager::InvitePlayerByPlayerName(SharedTask *s, const std::string &player_name)
{
	auto character = CharacterDataRepository::GetWhere(
		*m_database,
		fmt::format("`name` = '{}' LIMIT 1", Strings::Escape(player_name))
	);

	auto character_id = !character.empty() ? character.front().id : 0;

	// we call validation even for an invalid player so error messages occur
	if (CanAddPlayer(s, character_id, player_name, false)) {
		// send dialogue window
		SendSharedTaskInvitePacket(s, character_id);

		// keep track of active invitations at world
		QueueActiveInvitation(s->GetDbSharedTask().id, character_id);
	}
}

void SharedTaskManager::SendSharedTaskInvitePacket(SharedTask *s, int64 invited_character_id)
{
	auto leader = s->GetLeader();

	// found leader
	if (leader.character_id > 0) {

		// init packet
		auto p = std::make_unique<ServerPacket>(
			ServerOP_SharedTaskInvitePlayer,
			sizeof(ServerSharedTaskInvitePlayer_Struct)
		);

		// fill
		auto d = reinterpret_cast<ServerSharedTaskInvitePlayer_Struct *>(p->pBuffer);
		d->requested_character_id = invited_character_id;
		d->invite_shared_task_id  = s->GetDbSharedTask().id;
		strn0cpy(d->inviter_name, leader.character_name.c_str(), sizeof(d->inviter_name));
		strn0cpy(d->task_name, s->GetTaskData().title.c_str(), sizeof(d->task_name));

		// get requested character zone server
		ClientListEntry *cle = client_list.FindCLEByCharacterID(invited_character_id);
		if (cle && cle->Server()) {
			SendLeaderMessageID(s, Chat::Yellow, TaskStr::SEND_INVITE_TO, {cle->name()});
			cle->Server()->SendPacket(p.get());
		}
	}
}

void SharedTaskManager::AddPlayerByCharacterIdAndName(
	SharedTask *s,
	int64 character_id,
	const std::string &character_name
)
{
	// fetch
	std::vector<SharedTaskMember> members = s->GetMembers();

	// create
	auto new_member = SharedTaskMember{};
	new_member.character_id   = character_id;
	new_member.character_name = character_name;

	bool does_member_exist = false;

	for (auto &m: s->GetMembers()) {
		if (m.character_id == character_id) {
			does_member_exist = true;
		}
	}

	if (!does_member_exist && CanAddPlayer(s, character_id, character_name, true)) {
		members.push_back(new_member);

		// add request timer (validation will prevent non-expired duplicates)
		if (s->GetTaskData().request_timer_seconds > 0) {
			auto expire_time = s->GetDbSharedTask().accepted_time + s->GetTaskData().request_timer_seconds;
			if (expire_time > std::time(nullptr)) // not already expired
			{
				auto timer = CharacterTaskTimersRepository::NewEntity();
				timer.character_id = character_id;
				timer.task_id      = s->GetDbSharedTask().task_id;
				timer.timer_type   = static_cast<int>(TaskTimerType::Request);
				timer.timer_group  = s->GetTaskData().request_timer_group;
				timer.expire_time  = expire_time;

				CharacterTaskTimersRepository::InsertOne(*m_database, timer);
			}
		}

		// inform client
		SendAcceptNewSharedTaskPacket(character_id, s->GetTaskData().id, 0, s->GetDbSharedTask().accepted_time);

		// add to shared task
		SendSharedTaskMemberAddedToAllMembers(s, character_name);
		s->SetMembers(members);
		SaveMembers(s, members);
		SendSharedTaskMemberList(character_id, s->GetMembers()); // new member gets full member list
		s->AddCharacterToMemberHistory(character_id);

		// min players should be the only thing to check, other failed reqs prevent player add
		if (s->GetMembers().size() >= s->GetTaskData().min_players)
		{
			s->terminate_timer.Disable();
		}

		// add to dzs tied to shared task
		for (const auto &dz_id : s->dynamic_zone_ids) {
			auto dz = DynamicZone::FindDynamicZoneByID(dz_id);
			if (dz) {
				auto status = DynamicZoneMemberStatus::Online;
				dz->AddMember({static_cast<uint32_t>(character_id), character_name, status});
			}
		}
	}
}

SharedTask *SharedTaskManager::FindSharedTaskById(int64 shared_task_id)
{
	for (auto &s: m_shared_tasks) {
		if (s.GetDbSharedTask().id == shared_task_id) {
			return &s;
		}
	}

	return nullptr;
}

SharedTask* SharedTaskManager::FindSharedTaskByDzId(uint32_t dz_id)
{
	for (auto& s: m_shared_tasks) {
		auto it = std::find(s.dynamic_zone_ids.begin(), s.dynamic_zone_ids.end(), dz_id);
		if (it != s.dynamic_zone_ids.end()) {
			return &s;
		}
	}

	return nullptr;
}

void SharedTaskManager::QueueActiveInvitation(int64 shared_task_id, int64 character_id)
{
	LogTasksDetail(
		"shared_task_id [{}] character_id [{}]",
		shared_task_id,
		character_id
	);

	auto active_invitation = SharedTaskActiveInvitation{};
	active_invitation.shared_task_id = shared_task_id;
	active_invitation.character_id   = character_id;

	m_active_invitations.emplace_back(active_invitation);
}

bool SharedTaskManager::IsInvitationActive(uint32 shared_task_id, uint32 character_id)
{
	LogTasksDetail(
		"shared_task_id [{}] character_id [{}]",
		shared_task_id,
		character_id
	);

	for (auto &i: m_active_invitations) {
		if (i.character_id == character_id && i.shared_task_id == shared_task_id) {
			return true;
		}
	}

	return false;
}

void SharedTaskManager::RemoveActiveInvitation(int64 shared_task_id, int64 character_id)
{
	LogTasksDetail(
		"shared_task_id [{}] character_id [{}] pre_removal_count [{}]",
		shared_task_id,
		character_id,
		m_active_invitations.size()
	);

	// remove internally
	m_active_invitations.erase(
		std::remove_if(
			m_active_invitations.begin(),
			m_active_invitations.end(),
			[&](SharedTaskActiveInvitation const &i) {
				return i.shared_task_id == shared_task_id && i.character_id == character_id;
			}
		),
		m_active_invitations.end()
	);

	LogTasksDetail(
		"shared_task_id [{}] character_id [{}] post_removal_count [{}]",
		shared_task_id,
		character_id,
		m_active_invitations.size()
	);
}

void SharedTaskManager::RemoveActiveInvitationByCharacterID(uint32_t character_id)
{
	m_active_invitations.erase(
		std::remove_if(
			m_active_invitations.begin(), m_active_invitations.end(),
			[&](SharedTaskActiveInvitation const &i) {
				return i.character_id == character_id;
			}
		), m_active_invitations.end()
	);
}

void SharedTaskManager::CreateDynamicZone(SharedTask *shared_task, DynamicZone &dz_request)
{
	std::vector<DynamicZoneMember> dz_members;
	for (const auto                &member : shared_task->GetMembers()) {
		dz_members.emplace_back(member.character_id, member.character_name);
		if (member.is_leader) {
			dz_request.SetLeader({member.character_id, member.character_name});
		}
	}

	auto new_dz = dynamic_zone_manager.CreateNew(dz_request, dz_members);
	if (new_dz) {
		auto shared_task_dz = SharedTaskDynamicZonesRepository::NewEntity();
		shared_task_dz.shared_task_id  = shared_task->GetDbSharedTask().id;
		shared_task_dz.dynamic_zone_id = new_dz->GetID();

		SharedTaskDynamicZonesRepository::InsertOne(*m_database, shared_task_dz);

		shared_task->dynamic_zone_ids.emplace_back(new_dz->GetID());
	}
}

void SharedTaskManager::LoadDynamicZoneTemplate(SharedTask* s)
{
	const auto& task = s->GetTaskData();
	if (task.dz_template_id != 0)
	{
		auto it = dynamic_zone_manager.GetTemplates().find(task.dz_template_id);
		if (it != dynamic_zone_manager.GetTemplates().end())
		{
			DynamicZone dz(DynamicZoneType::Mission);
			dz.LoadTemplate(it->second);
			dz.SetMinPlayers(task.min_players);
			dz.SetMaxPlayers(task.max_players);
			if (task.duration > dz.GetDuration())
			{
				dz.SetDuration(task.duration);
			}
			CreateDynamicZone(s, dz);
		}
	}
}

void SharedTaskManager::SendLeaderMessage(SharedTask *shared_task, int chat_type, const std::string &message)
{
	if (!shared_task) {
		return;
	}

	for (const auto &member : shared_task->GetMembers()) {
		if (member.is_leader) {
			client_list.SendCharacterMessage(member.character_id, chat_type, message);
			break;
		}
	}
}

void SharedTaskManager::SendLeaderMessageID(
	SharedTask *shared_task, int chat_type,
	int eqstr_id, std::initializer_list<std::string> args
)
{
	if (!shared_task) {
		return;
	}

	for (const auto &member : shared_task->GetMembers()) {
		if (member.is_leader) {
			client_list.SendCharacterMessageID(member.character_id, chat_type, eqstr_id, args);
			break;
		}
	}
}

void SharedTaskManager::SendMembersMessage(SharedTask *shared_task, int chat_type, const std::string &message)
{
	if (!shared_task) {
		return;
	}

	for (const auto &member : shared_task->GetMembers()) {
		client_list.SendCharacterMessage(member.character_id, chat_type, message);
	}
}

void SharedTaskManager::SendMembersMessageID(
	SharedTask *shared_task,
	int chat_type,
	int eqstr_id,
	std::initializer_list<std::string> args
)
{
	if (!shared_task || shared_task->GetMembers().empty()) {
		return;
	}

	// serialize here since using client_list methods would re-serialize for every member
	SerializeBuffer serialized_args;
	for (const auto &arg : args) {
		serialized_args.WriteString(arg);
	}

	uint32_t args_size = static_cast<uint32_t>(serialized_args.size());
	uint32_t pack_size = sizeof(CZClientMessageString_Struct) + args_size;
	auto     pack      = std::make_unique<ServerPacket>(ServerOP_CZClientMessageString, pack_size);
	auto     buf       = reinterpret_cast<CZClientMessageString_Struct *>(pack->pBuffer);
	buf->string_id = eqstr_id;
	buf->chat_type = chat_type;
	buf->args_size = args_size;
	memcpy(buf->args, serialized_args.buffer(), serialized_args.size());

	for (const auto &member : shared_task->GetMembers()) {
		auto character = client_list.FindCLEByCharacterID(member.character_id);
		if (character && character->Server()) {
			strn0cpy(buf->client_name, character->name(), sizeof(buf->client_name));
			character->Server()->SendPacket(pack.get());
		}
	}
}

std::vector<CharacterTaskTimersRepository::CharacterTaskTimers> SharedTaskManager::GetCharacterTimers(
	const std::vector<uint32_t>& character_ids, const TasksRepository::Tasks& task)
{
	// todo: consider caching character timers in world and zone to avoid queries
	auto task_timers = CharacterTaskTimersRepository::GetWhere(*m_database, fmt::format(
		SQL(
			character_id IN ({})
			AND (task_id = {}
				OR (timer_group > 0 AND timer_type = {} AND timer_group = {})
				OR (timer_group > 0 AND timer_type = {} AND timer_group = {}))
			AND expire_time > NOW() ORDER BY timer_type ASC LIMIT 1
		),
		Strings::Join(character_ids, ","),
		task.id,
		static_cast<int>(TaskTimerType::Replay),
		task.replay_timer_group,
		static_cast<int>(TaskTimerType::Request),
		task.request_timer_group
	));

	return task_timers;
}

bool SharedTaskManager::CanRequestSharedTask(uint32_t task_id, const SharedTaskRequest& request)
{
	auto task = GetSharedTaskDataByTaskId(task_id);
	if (task.id == 0) {
		return false;
	}

	// this attempts to follow live validation order

	// check if any party members are already in a shared task
	auto shared_task_members = FindCharactersInSharedTasks(request.character_ids);
	if (!shared_task_members.empty()) {
		// messages for every character already in a shared task
		for (const auto& it : shared_task_members) {
			if (it.character_id == request.leader_id) {
				client_list.SendCharacterMessageID(request.leader_id, Chat::Red, TaskStr::REQUEST_HAVE);
			}
			else if (request.group_type == SharedTaskRequestGroupType::Group) {
				client_list.SendCharacterMessageID(request.leader_id, Chat::Red, TaskStr::REQUEST_GROUP_HAS, {it.character_name});
			}
			else {
				client_list.SendCharacterMessageID(request.leader_id, Chat::Red, TaskStr::REQUEST_RAID_HAS, {it.character_name});
			}
		}

		return false;
	}

	// check if any party member's minimum level is too low (pre-2014 this was average level)
	if (task.min_level > 0 && request.lowest_level < task.min_level) {
		client_list.SendCharacterMessage(request.leader_id, Chat::Red, TaskStr::Get(TaskStr::LVL_TOO_LOW));
		return false;
	}

	// check if any party member's maximum level is too high (pre-2014 this was average level)
	if (task.max_level > 0 && request.highest_level > task.max_level) {
		client_list.SendCharacterMessage(request.leader_id, Chat::Red, TaskStr::Get(TaskStr::LVL_TOO_HIGH));
		return false;
	}

	// allow gm/dev bypass for minimum player count requirements
	auto requester = client_list.FindCLEByCharacterID(request.leader_id);
	bool is_gm     = (requester && requester->GetGM());

	// check if party member count is below the minimum
	if (!is_gm && task.min_players > 0 && request.members.size() < task.min_players) {
		client_list.SendCharacterMessageID(request.leader_id, Chat::Red, TaskStr::MIN_PLAYERS);
		return false;
	}

	if (is_gm) {
		client_list.SendCharacterMessage(requester->CharID(), Chat::White, "Your GM Flag allows you to bypass shared task minimum player requirements.");
	}

	// check if party member count is above the maximum
	// todo: live creates the shared task but truncates members if it exceeds max (sorted by leader and raid group numbers)
	if (task.max_players > 0 && request.members.size() > task.max_players) {
		client_list.SendCharacterMessageID(request.leader_id, Chat::Red, TaskStr::MAX_PLAYERS);
		return false;
	}

	// check if party level spread exceeds task's maximum
	if (task.level_spread > 0 && (request.highest_level - request.lowest_level) > task.level_spread) {
		client_list.SendCharacterMessageID(request.leader_id, Chat::Red, TaskStr::LVL_SPREAD_HIGH);
		return false;
	}

	// check if any party members have a replay or request timer for the task (limit 1, replay checked first)
	auto character_task_timers = GetCharacterTimers(request.character_ids, task);

	if (!character_task_timers.empty()) {
		auto timer_type = static_cast<TaskTimerType>(character_task_timers.front().timer_type);
		auto seconds    = character_task_timers.front().expire_time - std::time(nullptr);
		auto days       = fmt::format_int(seconds / 86400).str();
		auto hours      = fmt::format_int((seconds / 3600) % 24).str();
		auto mins       = fmt::format_int((seconds / 60) % 60).str();

		if (character_task_timers.front().character_id == request.leader_id) {
			if (timer_type == TaskTimerType::Replay) {
				client_list.SendCharacterMessageID(request.leader_id, Chat::Red, TaskStr::YOU_REPLAY_TIMER, {days, hours, mins});
			}
			else if (timer_type == TaskTimerType::Request) {
				client_list.SendCharacterMessage(request.leader_id, Chat::Red, fmt::format(
					TaskStr::Get(TaskStr::YOU_REQUEST_TIMER), days, hours, mins));
			}
		}
		else {
			auto it = std::find_if(request.members.begin(), request.members.end(),
				[&](const SharedTaskMember& member) {
					return member.character_id == character_task_timers.front().character_id;
				});

			if (it != request.members.end() && timer_type == TaskTimerType::Replay) {
				client_list.SendCharacterMessageID(request.leader_id, Chat::Red,
					TaskStr::PLAYER_REPLAY_TIMER, {it->character_name, days, hours, mins});
			}
			else if (it != request.members.end() && timer_type == TaskTimerType::Request) {
				client_list.SendCharacterMessage(request.leader_id, Chat::Red, fmt::format(
					TaskStr::Get(TaskStr::PLAYER_REQUEST_TIMER), it->character_name, days, hours, mins));
			}
		}

		return false;
	}

	return true;
}

bool SharedTaskManager::CanAddPlayer(SharedTask *s, uint32_t character_id, std::string player_name, bool accepted)
{
	// this attempts to follow live validation order

	bool allow_invite = true;

	// check if task is locked
	if (s->GetDbSharedTask().is_locked) {
		SendLeaderMessageID(s, Chat::Red, TaskStr::NOT_ALLOWING_PLAYERS);
		allow_invite = false;
	}

	// check if player is online and in cle (other checks require online)
	auto cle = client_list.FindCLEByCharacterID(character_id);
	if (!cle || !cle->Server()) {
		SendLeaderMessageID(s, Chat::Red, TaskStr::PLAYER_NOT_ONLINE, {player_name});
		SendLeaderMessageID(s, Chat::Red, TaskStr::COULD_NOT_BE_INVITED, {player_name});
		return false;
	}

	player_name = cle->name();

	// check if player is already in a shared task
	// todo: do a memory search instead of query here
	auto shared_task_members = SharedTaskMembersRepository::GetWhere(
		*m_database,
		fmt::format("character_id = {} LIMIT 1", character_id)
	);

	if (!shared_task_members.empty()) {
		auto shared_task_id = shared_task_members.front().shared_task_id;
		if (shared_task_id == s->GetDbSharedTask().id) {
			SendLeaderMessageID(s, Chat::Red, TaskStr::PLAYER_ALREADY_MEMBER, {player_name});
		}
		else {
			SendLeaderMessageID(s, Chat::Red, TaskStr::PLAYER_ALREADY_ASSIGNED, {player_name});
		}
		allow_invite = false;
	}

	// check if player has an outstanding invite
	for (const auto &invite : m_active_invitations) {
		if (invite.character_id == character_id) {
			if (invite.shared_task_id == s->GetDbSharedTask().id) {
				SendLeaderMessageID(s, Chat::Red, TaskStr::PLAYER_INVITED, {player_name});
			}
			else {
				SendLeaderMessageID(s, Chat::Red, TaskStr::PLAYER_INVITED_OTHER, {player_name});
			}
			allow_invite = false;
			break;
		}
	}

	// check if player has a replay or request timer lockout
	// todo: live allows characters with a request timer to be re-invited if they quit, but only until they zone? (investigate/edge case)
	auto task_timers = GetCharacterTimers({ character_id }, s->GetTaskData());

	if (!task_timers.empty()) {
		auto timer_type = static_cast<TaskTimerType>(task_timers.front().timer_type);
		auto seconds    = task_timers.front().expire_time - std::time(nullptr);
		auto days       = fmt::format_int(seconds / 86400).str();
		auto hours      = fmt::format_int((seconds / 3600) % 24).str();
		auto mins       = fmt::format_int((seconds / 60) % 60).str();

		if (timer_type == TaskTimerType::Replay) {
			SendLeaderMessageID(s, Chat::Red, TaskStr::CANT_ADD_PLAYER_REPLAY_TIMER, {player_name, days, hours, mins});
		}
		else {
			SendLeaderMessage(s, Chat::Red, fmt::format(
				TaskStr::Get(TaskStr::CANT_ADD_PLAYER_REQUEST_TIMER), player_name, days, hours, mins));
		}

		allow_invite = false;
	}

	// check if task has maximum players
	if (s->GetTaskData().max_players > 0 && s->GetMembers().size() >= s->GetTaskData().max_players) {
		auto max = fmt::format_int(s->GetTaskData().max_players).str();
		SendLeaderMessageID(s, Chat::Red, TaskStr::CANT_ADD_MAX_PLAYERS, {max});
		allow_invite = false;
	}

	// check if task would exceed max level spread
	// todo: cache low/high levels on SharedTask to avoid query for offline members (also usable by RemoveMember)
	if (s->GetTaskData().level_spread > 0) {
		auto characters = CharacterDataRepository::GetWhere(
			*m_database,
			fmt::format(
				"id IN (select character_id from shared_task_members where shared_task_id = {})",
				s->GetDbSharedTask().id
			)
		);

		auto lowest_level  = static_cast<uint32_t>(cle->level());
		auto highest_level = lowest_level;

		for (const auto &character : characters) {
			lowest_level  = std::min(lowest_level, character.level);
			highest_level = std::max(highest_level, character.level);
		}

		if ((highest_level - lowest_level) > s->GetTaskData().level_spread) {
			auto max_spread = fmt::format_int(s->GetTaskData().level_spread).str();
			SendLeaderMessageID(s, Chat::Red, TaskStr::CANT_ADD_LVL_SPREAD, {max_spread});
			allow_invite = false;
		}
	}

	// check if player is below minimum level of task (pre-2014 this was average level)
	if (s->GetTaskData().min_level > 0 && cle->level() < s->GetTaskData().min_level) {
		SendLeaderMessage(s, Chat::Red, TaskStr::Get(TaskStr::CANT_ADD_MIN_LEVEL));
		allow_invite = false;
	}

	// check if player is above maximum level of task (pre-2014 this was average level)
	if (s->GetTaskData().max_level > 0 && cle->level() > s->GetTaskData().max_level) {
		SendLeaderMessage(s, Chat::Red, TaskStr::Get(TaskStr::CANT_ADD_MAX_LEVEL));
		allow_invite = false;
	}

	if (!allow_invite) {
		if (!accepted) {
			SendLeaderMessageID(s, Chat::Red, TaskStr::COULD_NOT_BE_INVITED, {player_name});
		}
		else {
			SendLeaderMessageID(s, Chat::Red, TaskStr::COULD_NOT_JOIN, {player_name});
		}
	}

	return allow_invite;
}

void SharedTaskManager::RecordSharedTaskCompletion(SharedTask *s)
{
	// shared task
	auto& t  = s->GetDbSharedTask();
	auto ct = CompletedSharedTasksRepository::NewEntity();

	ct.id              = t.id;
	ct.task_id         = t.task_id;
	ct.accepted_time   = t.accepted_time;
	ct.expire_time     = t.expire_time;
	ct.completion_time = t.completion_time;
	ct.is_locked       = t.is_locked;

	CompletedSharedTasksRepository::InsertOne(*m_database, ct);

	// completed members
	std::vector<CompletedSharedTaskMembersRepository::CompletedSharedTaskMembers> completed_members = {};

	for (auto &m: s->GetMembers()) {
		auto cm = CompletedSharedTaskMembersRepository::NewEntity();

		cm.shared_task_id = t.id;
		cm.character_id   = m.character_id;
		cm.is_leader      = m.is_leader;

		completed_members.emplace_back(cm);
	}

	CompletedSharedTaskMembersRepository::InsertMany(*m_database, completed_members);

	// activities
	std::vector<CompletedSharedTaskActivityStateRepository::CompletedSharedTaskActivityState> completed_states = {};

	for (auto &a: s->GetActivityState()) {
		auto cs = CompletedSharedTaskActivityStateRepository::NewEntity();

		cs.shared_task_id = t.id;
		cs.activity_id    = (int) a.activity_id;
		cs.done_count     = (int) a.done_count;
		cs.updated_time   = a.updated_time;
		cs.completed_time = a.completed_time;

		completed_states.emplace_back(cs);
	}

	CompletedSharedTaskActivityStateRepository::InsertMany(*m_database, completed_states);

}

void SharedTaskManager::AddReplayTimers(SharedTask *s)
{
	if (s->GetTaskData().replay_timer_seconds > 0) {
		auto seconds     = s->GetTaskData().replay_timer_seconds;
		auto expire_time = std::time(nullptr) + seconds;

		std::vector<CharacterTaskTimersRepository::CharacterTaskTimers> task_timers;

		// on live past members of the shared task also receive lockouts (use member history)
		for (const auto &member_id : s->member_id_history) {
			auto timer = CharacterTaskTimersRepository::NewEntity();
			timer.character_id = member_id;
			timer.task_id      = s->GetTaskData().id;
			timer.timer_type   = static_cast<int>(TaskTimerType::Replay);
			timer.timer_group  = s->GetTaskData().replay_timer_group;
			timer.expire_time  = expire_time;

			task_timers.emplace_back(timer);

			client_list.SendCharacterMessage(
				member_id,
				Chat::Yellow,
				fmt::format(
					TaskStr::Get(TaskStr::RECEIVED_REPLAY_TIMER),
					s->GetTaskData().title,
					fmt::format_int(seconds / 86400).c_str(),       // days
					fmt::format_int((seconds / 3600) % 24).c_str(), // hours
					fmt::format_int((seconds / 60) % 60).c_str()    // minutes
				)
			);
		}

		if (!task_timers.empty()) {
			// replay timers replace any existing timer (even if it expires sooner)
			// this can occur if a player has a timer for being a past member of
			// a shared task but joined another before the first was completed
			CharacterTaskTimersRepository::DeleteWhere(*m_database, fmt::format(
				"(task_id = {} OR (timer_group > 0 AND timer_group = {})) AND timer_type = {} AND character_id IN ({})",
				s->GetTaskData().id,
				s->GetTaskData().replay_timer_group,
				static_cast<int>(TaskTimerType::Replay),
				Strings::Join(s->member_id_history, ",")
			));

			CharacterTaskTimersRepository::InsertMany(*m_database, task_timers);
		}
	}
}

// memory search
std::vector<SharedTaskMember> SharedTaskManager::FindCharactersInSharedTasks(const std::vector<uint32_t> &find_characters)
{
	std::vector<SharedTaskMember> characters = {};

	for (auto &s: m_shared_tasks) {
		// loop through members
		for (auto &m: s.GetMembers()) {
			// compare members with requested characters
			for (auto &find_character_id: find_characters) {
				// found character, add to list
				if (find_character_id == m.character_id) {
					characters.emplace_back(m);
				}
			}
		}
	}

	return characters;
}

void SharedTaskManager::PurgeAllSharedTasks()
{
	for (auto &shared_task : m_shared_tasks) {
		RemoveAllMembersFromDynamicZones(&shared_task);
	}

	SharedTasksRepository::Truncate(*m_database);
	SharedTaskMembersRepository::Truncate(*m_database);
	SharedTaskActivityStateRepository::Truncate(*m_database);
	SharedTaskDynamicZonesRepository::Truncate(*m_database);
	CompletedSharedTasksRepository::Truncate(*m_database);
	CompletedSharedTaskMembersRepository::Truncate(*m_database);
	CompletedSharedTaskActivityStateRepository::Truncate(*m_database);

	LoadSharedTaskState();
}

void SharedTaskManager::RemoveAllMembersFromDynamicZones(SharedTask *s)
{
	for (const auto &dz_id : s->dynamic_zone_ids) {
		auto dz = DynamicZone::FindDynamicZoneByID(dz_id);
		if (dz) {
			dz->RemoveAllMembers();
		}
	}
}

void SharedTaskManager::ChooseNewLeader(SharedTask *s)
{
	// live doesn't prioritize choosing an online player here
	auto members = s->GetMembers();
	auto it      = std::find_if(
		members.begin(), members.end(),
		[&](const SharedTaskMember &member) {
			return !member.is_leader;
		}
	);

	if (it != members.end()) {
		MakeLeaderByPlayerName(s, it->character_name);
	}
}

const std::vector<SharedTask> &SharedTaskManager::GetSharedTasks() const
{
	return m_shared_tasks;
}

void SharedTaskManager::SetSharedTasks(const std::vector<SharedTask> &shared_tasks)
{
	SharedTaskManager::m_shared_tasks = shared_tasks;
}

SharedTaskManager *SharedTaskManager::PurgeExpiredSharedTasks()
{
	std::vector<int64_t> delete_tasks;

	auto      now = std::time(nullptr);
	for (auto &s: m_shared_tasks) {
		if (s.GetDbSharedTask().expire_time > 0 && s.GetDbSharedTask().expire_time <= now) {
			LogTasksDetail("Deleting expired task [{}]", s.GetDbSharedTask().id);
			delete_tasks.push_back(s.GetDbSharedTask().id);
		}
	}

	for (int64_t shared_task_id : delete_tasks)
	{
		DeleteSharedTask(shared_task_id);
	}

	return this;
}

void SharedTaskManager::LockTask(SharedTask* s, bool lock)
{
	bool is_locked = (s->GetDbSharedTask().is_locked != 0);
	if (is_locked != lock)
	{
		auto db_task = s->GetDbSharedTask();
		db_task.is_locked = lock;
		SharedTasksRepository::UpdateOne(*m_database, db_task);
		s->SetDbSharedTask(db_task);

		if (lock)
		{
			SendLeaderMessageID(s, Chat::Yellow, TaskStr::TASK_LOCKED);
		}
	}
}

bool SharedTaskManager::HandleCompletedActivities(SharedTask* s)
{
	auto states = s->GetActivityState();

	// activity state holds both source data and current state
	auto res = Tasks::GetActiveElements(states, states, states.size());

	// completion locks are silent
	auto it = std::find(res.active.begin(), res.active.end(), s->GetTaskData().lock_activity_id);
	if (!res.is_task_complete && it != res.active.end())
	{
		LockTask(s, true);
	}

	return res.is_task_complete;
}

void SharedTaskManager::HandleCompletedTask(SharedTask* s)
{
	auto db_task = s->GetDbSharedTask();
	if (db_task.completion_time > 0)
	{
		LogTasksDetail("shared task [{}] already completed", db_task.id);
		return;
	}

	LogTasksDetail("Marking shared task [{}] completed", db_task.id);
	db_task.completion_time = std::time(nullptr);
	db_task.is_locked = true;
	SharedTasksRepository::UpdateOne(*m_database, db_task);
	s->SetDbSharedTask(db_task);

	RecordSharedTaskCompletion(s);

	AddReplayTimers(s);
}

void SharedTaskManager::StartTerminateTimer(SharedTask* s)
{
	s->terminate_timer.Start(RuleI(TaskSystem, SharedTasksTerminateTimerMS));
	SendMembersMessageID(s, Chat::Red, TaskStr::REQS_TWO_MIN);
}

void SharedTaskManager::Process()
{
	if (!m_process_timer.Check())
	{
		return;
	}

	std::vector<int64_t> delete_tasks;
	for (auto& shared_task : m_shared_tasks)
	{
		if (shared_task.GetMembers().empty() || shared_task.terminate_timer.Check() || shared_task.IsExpired())
		{
			Terminate(shared_task, false, false);

			// avoid erasing from m_shared_tasks while iterating it
			delete_tasks.push_back(shared_task.GetDbSharedTask().id);
		}
	}

	for (int64_t shared_task_id : delete_tasks)
	{
		DeleteSharedTask(shared_task_id);
	}
}