/*
 * Copyright (C) 2012-2017 CypherCore <http://github.com/CypherCore>
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

using Framework.Constants;
using Game.AI;
using Game.Entities;
using Game.Scripting;
using Game.Spells;
using System;
using System.Collections.Generic;


namespace Scripts.Northrend.AzjolNerub.Ahnkahet.ElderNadox
{
    struct SpellIds
    {
        public const uint BroodPlague = 56130;
        public const uint HBroodRage = 59465;
        public const uint Enrage = 26662; // Enraged If Too Far Away From Home
        public const uint SummonSwarmers = 56119; // 2x 30178  -- 2x Every 10secs
        public const uint SummonSwarmGuard = 56120; // 1x 30176

        // Adds
        public const uint SwarmBuff = 56281;
        public const uint Sprint = 56354;
    }

    struct TextIds
    {
        public const uint SayAggro = 0;
        public const uint SaySlay = 1;
        public const uint SayDeath = 2;
        public const uint SayEggSac = 3;
        public const uint EmoteHatches = 4;
    }

    struct Misc
    {
        public const uint DataRespectYourElders = 6;
    }

    [Script]
    class boss_elder_nadox : CreatureScript
    {
        public boss_elder_nadox() : base("boss_elder_nadox") { }

        class boss_elder_nadoxAI : BossAI
        {
            public boss_elder_nadoxAI(Creature creature) : base(creature, DataTypes.ElderNadox)
            {
                Initialize();
            }

            void Initialize()
            {
                GuardianSummoned = false;
                GuardianDied = false;
            }

            public override void Reset()
            {
                _Reset();
                Initialize();
            }

            public override void EnterCombat(Unit who)
            {
                _EnterCombat();
                Talk(TextIds.SayAggro);

                _scheduler.Schedule(TimeSpan.FromSeconds(13), task =>
                {
                    DoCast(SelectTarget(SelectAggroTarget.Random, 0, 100, true), SpellIds.BroodPlague, true);
                    task.Repeat(TimeSpan.FromSeconds(15));
                });

                _scheduler.Schedule(TimeSpan.FromSeconds(10), task =>
                {
                    /// @todo: summoned by egg
                    DoCast(me, SpellIds.SummonSwarmers);
                    if (RandomHelper.URand(1, 3) == 3) // 33% chance of dialog
                        Talk(TextIds.SayEggSac);
                    task.Repeat();
                });

                if (IsHeroic())
                {
                    _scheduler.Schedule(TimeSpan.FromSeconds(12), task =>
                    {
                        DoCast(SpellIds.HBroodRage);
                        task.Repeat(TimeSpan.FromSeconds(10), TimeSpan.FromSeconds(50));
                    });

                    _scheduler.Schedule(TimeSpan.FromSeconds(5), task =>
                    {
                        if (me.HasAura(SpellIds.Enrage))
                            return;
                        if (me.GetPositionZ() < 24.0f)
                            DoCast(me, SpellIds.Enrage, true);
                        task.Repeat();
                    });
                }
            }

            public override void SummonedCreatureDies(Creature summon, Unit killer)
            {
                if (summon.GetEntry() == AKCreatureIds.AhnkaharGuardian)
                    GuardianDied = true;
            }

            public override uint GetData(uint type)
            {
                if (type == Misc.DataRespectYourElders)
                    return !GuardianDied ? 1 : 0u;

                return 0;
            }

            public override void KilledUnit(Unit who)
            {
                if (who.IsTypeId(TypeId.Player))
                    Talk(TextIds.SaySlay);
            }

            public override void JustDied(Unit killer)
            {
                _JustDied();
                Talk(TextIds.SayDeath);
            }

            public override void UpdateAI(uint diff)
            {
                if (!UpdateVictim())
                    return;

                _scheduler.Update(diff);

                if (!GuardianSummoned && me.HealthBelowPct(50))
                {
                    /// @todo: summoned by egg
                    Talk(TextIds.EmoteHatches, me);
                    DoCast(me, SpellIds.SummonSwarmGuard);
                    GuardianSummoned = true;
                }

                DoMeleeAttackIfReady();
            }

            bool GuardianSummoned;
            bool GuardianDied;
        }

        public override CreatureAI GetAI(Creature creature)
        {
            return GetInstanceAI<boss_elder_nadoxAI>(creature, "instance_ahnkahet");
        }
    }

    [Script]
    class npc_ahnkahar_nerubian : CreatureScript
    {
        public npc_ahnkahar_nerubian() : base("npc_ahnkahar_nerubian") { }

        class npc_ahnkahar_nerubianAI : ScriptedAI
        {
            public npc_ahnkahar_nerubianAI(Creature creature) : base(creature) { }

            public override void Reset()
            {
                _scheduler.CancelAll();
                _scheduler.Schedule(TimeSpan.FromSeconds(13), task =>
                {
                    DoCast(me, SpellIds.Sprint);
                    task.Repeat(TimeSpan.FromSeconds(20));
                });
            }

            public override void UpdateAI(uint diff)
            {
                if (!UpdateVictim())
                    return;

                if (me.HasUnitState(UnitState.Casting))
                    return;

                _scheduler.Update(diff);

                DoMeleeAttackIfReady();
            }
        }

        public override CreatureAI GetAI(Creature creature)
        {
            return new npc_ahnkahar_nerubianAI(creature);
        }
    }

    // 56159 - Swarm
    [Script]
    class spell_ahn_kahet_swarm : SpellScriptLoader
    {
        public spell_ahn_kahet_swarm() : base("spell_ahn_kahet_swarm") { }

        class spell_ahn_kahet_swarm_SpellScript : SpellScript
        {
            public spell_ahn_kahet_swarm_SpellScript()
            {
                _targetCount = 0;
            }

            public override bool Validate(SpellInfo spellInfo)
            {
                return ValidateSpellInfo(SpellIds.SwarmBuff);
            }

            void CountTargets(List<WorldObject> targets)
            {
                _targetCount = targets.Count;
            }

            void HandleDummy(uint effIndex)
            {
                if (_targetCount != 0)
                { Aura aura = GetCaster().GetAura(SpellIds.SwarmBuff);
                    if (aura != null)
                    {
                        aura.SetStackAmount((byte)_targetCount);
                        aura.RefreshDuration();
                    }
                    else
                        GetCaster().CastCustomSpell(SpellIds.SwarmBuff, SpellValueMod.AuraStack, _targetCount, GetCaster(), TriggerCastFlags.FullMask);
                }
                else
                    GetCaster().RemoveAurasDueToSpell(SpellIds.SwarmBuff);
            }

            public override void Register()
            {
                OnObjectAreaTargetSelect.Add(new ObjectAreaTargetSelectHandler(CountTargets, 0, Targets.UnitSrcAreaAlly));
                OnEffectHit.Add(new EffectHandler(HandleDummy, 0, SpellEffectName.Dummy));
            }

            int _targetCount;
        }

        public override SpellScript GetSpellScript()
        {
            return new spell_ahn_kahet_swarm_SpellScript();
        }
    }

    [Script]
    class achievement_respect_your_elders : AchievementCriteriaScript
    {
        public achievement_respect_your_elders() : base("achievement_respect_your_elders") { }

        public override bool OnCheck(Player player, Unit target)
        {
            return target && target.GetAI().GetData(Misc.DataRespectYourElders) != 0;
        }
    }
}