-- 移动行为

--> Services
local ServerStorage = game:GetService("ServerStorage")
local ReplicatedStorage = game:GetService("ReplicatedStorage")

--> Dependencies
local TypeList = require(ServerStorage.Base.TypeList)
local Behaviour = require(ServerStorage.Base.Behaviour)
local MobsProxy = require(ServerStorage.Proxy.MobsProxy)
local DamageProxy = require(ServerStorage.Proxy.DamageProxy)
local Utils = require(ReplicatedStorage.Tools.Utils)

--------------------------------------------------------------------------------

local SwordWave = {}
SwordWave.__index = SwordWave
setmetatable(SwordWave, {__index = Behaviour})

local CAST_DISTANCE = 50
local PROJECTILE_LENGTH = 50
local PROJECTILE_DURATION = 3
local COOLDOWN = 1

function SwordWave:Init(PlayerAI, Character: TypeList.Character, Player: Player)
    local self = Behaviour:Init(PlayerAI, Character, script.Name)
    self.Player = Player
    self.Mobs = nil
    setmetatable(self, SwordWave)
    self.OrgCooldown = COOLDOWN
    self:StartCooldownTask()
    
    -- 客户端表现
    self:SendPerformanceEvent("Init", self.Player, script.Name, true, {})
    return self
end

function SwordWave:Check(CheckInfo: table)
    if Behaviour.CheckStat(self) then return -1, self.CheckData end
    if self:CheckSpecialStat() then return -1, self.CheckData end
    self:CheckClean()

    self.Mobs = MobsProxy:GetPlayerMobs(self.Player)
    if not self.Mobs then return end

    local closestMob, minDistance = nil, CAST_DISTANCE
    for _, Mob in self.Mobs do
        if Mob.Instance and Mob.Instance.PrimaryPart then
            local dist = (Mob.Instance.PrimaryPart.Position - self.Character.Instance.PrimaryPart.Position).Magnitude
            if dist < minDistance then
                minDistance = dist
                closestMob = Mob
            end
        end
    end

    self.CheckData = {}
    if closestMob then
        self.CheckData["ClosestCharacter"] = closestMob
        return 200, self.CheckData
    end

    -- 返回优先级，执行数据
    return -1, self.CheckData
end

function SwordWave:Execute()
    self.ExeTask = task.spawn(function ()
        self:ChangeExecutingState(true)
        -- cd放前面之后发送事件才能正常记录cd
        self:StartCooldownTask()

        task.wait(0.5)
        -- 伤害逻辑部分
        local StartPos = self.Character.Instance:GetPivot().Position
        local EndPos = StartPos + (self.CheckData["ClosestCharacter"].Instance:GetPivot().Position - StartPos).Unit * PROJECTILE_LENGTH
        
        StartPos, EndPos = Utils:GetFlatDirectionAndEndPos(StartPos, self.CheckData["ClosestCharacter"].Instance:GetPivot().Position, PROJECTILE_LENGTH)
        DamageProxy:CastFreeProjectile(self.Character, StartPos, EndPos, PROJECTILE_DURATION, 4, 
        function (Victim: TypeList.Character)
            self:OnHit(Victim)
        end)

        -- 表现部分
        self:SendPerformanceEvent("Show", self.Player, self.ScriptName, true, {
            {   UniqueId = self.PlayerAI:GetBehaviourUniqueId(),
                StartPos = StartPos,
                EndPos = EndPos,
                Duration = PROJECTILE_DURATION,
                Cooldown = self.Cooldown,
            }
        })
        self:ChangeExecutingState(false)
    end)
end

function SwordWave:OnHit(Victim: TypeList.Character)
    DamageProxy:TakeDamage(self.Character, Victim, {
        {
            Damage = 30,
            Type = DamageProxy.DamageType.SKILL,
            Tag = DamageProxy.DamageTag.NORMAL,
            ElementType = DamageProxy.ElementType.NONE,
        },
        {
            Damage = 5,
            Type = DamageProxy.DamageType.SKILL,
            Tag = DamageProxy.DamageTag.NORMAL,
            ElementType = DamageProxy.ElementType.FIRE,
        },
        {
            Damage = 5,
            Type = DamageProxy.DamageType.SKILL,
            Tag = DamageProxy.DamageTag.NORMAL,
            ElementType = DamageProxy.ElementType.ICE,
        },
        {
            Damage = 5,
            Type = DamageProxy.DamageType.SKILL,
            Tag = DamageProxy.DamageTag.NORMAL,
            ElementType = DamageProxy.ElementType.SHADOW,
        }
    })
    return false
end

return SwordWave