local Battler = require("scenes.battlesystem.actors.battler")
local Hero = Battler:extend()

local gui         = require "game.modules.gui"
local StatusBar   = require "scenes.battlesystem.gui.statusbar"

local ChoregraphySystem = require "scenes.battlesystem.actors.systems.choregraphy"

-- INIT FUNCTIONS
-- Initialize the hero

function Hero:new(world, x, y, charid, charnumber)
  Hero.super.new(self, world, x, y, 0)
  self.isHero     = true

  self:initMovementSystem()

  self:initCharacter(charid)

  self:initSprite()
  self:initChoregraphySystem()

  self:initVoices()

  self.statusbar = StatusBar(self)

  self.side = "heroes"
end

-- CHARACTER FUNCTIONS
-- All functions related to character handling

function Hero:initCharacter(charid)
  if charid == nil then
    core.debug:error("FATAL ERROR: charid not set")
  end
  self.charid     = charid
  self.charnumber = charnumber or 1

  self.hp = game.characters.list[self.charid].stats.hp
  self.pp = game.characters.list[self.charid].stats.pp

  self.actionPerTurn = game.characters.list[self.charid].turns

  self.turnAction = nil
end

function Hero:getStats()
  return game.characters.list[self.charid].stats
end

function Hero:setHP(value, relative)
  if relative == true then
    value = game.characters.list[self.charid].stats.hp + value
  end

  game.characters.list[self.charid].stats.hp = value
  self.statusbar:updateHP()
end

function Hero:setPP(value, relative)
  if relative == true then
    value = game.characters.list[self.charid].stats.pp + value
  end

  game.characters.list[self.charid].stats.pp = value
  self.statusbar:updatePP()
end


-- ACTIVITY FUNCTION
-- Function to set or unset activity to the character

function Hero:setActive()
  core.debug:print("cbs/hero", "hero " .. self.charid .. " is now active")
  local gridsize = game.characters.list[self.charid].move
  if (gridsize == nil) then
    gridsize = 3
    core.debug:warning("cbs/character", "move value is nil")
  end
  self.world.cursor:setGrid(self.x, self.y, "circle", gridsize, 1, self)
  self.x, self.y = utils.math.round(self.x), utils.math.round(self.y)
  self.startx, self.starty = self.x, self.y

  self.world.cursor:set(self.startx, self.starty, "cursorMove")

  --self:talk("turnstart")

  self.directionPrevious = self.direction
end

-- UPDATE FUNCTION
-- Update the hero

function Hero:update(dt)
  Hero.super.update(self, dt)
  -- Get keys to have some keyboard functions
  self.keys = self.scene:getKeys(1)

  -- Calculate speed to calculate animation speed
  self:updateSpeed(dt)

  self:updateChoregraphy(dt)

  if (self.scene:haveMenus()) then
    self:changeDirection(dt)
  end

  self.xprevious = self.x
  self.yprevious = self.y
  self.zprevious = self.z

  self.statusbar:update(dt)
end

-- MOVE FUNCTIONS
-- All functions handling the moving

local MOVEMENT_DURATION = 0.20

function Hero:initMovementSystem()
  self.startx, self.starty        = self.x, self.y
  self.xprevious, self.yprevious, self.zprevious  = self.x, self.y, self.z
  self.direction = 1
  self.directionPrevious = 1
  self.directionLocked = false
  self.unlockDirection = true

  self:initJump()
end

function Hero:getMovementDuration(dx, dy, factor)
  local factor = factor or 1
  local duration = MOVEMENT_DURATION / factor
  local coef = 0.5
  local dx, dy = dx, dy
  local distance = utils.math.pointDistance(self.x, self.y, dx, dy) * coef
  return duration * distance
end

function Hero:goTo(dx, dy, timerName, factor, easing)
  local easing = easing or 'inOutQuad'
  local factor = factor or 1
  local duration = math.max(self:getMovementDuration(dx, dy, factor), 0.30)
  if duration > 0 then
    self.tweens:newTween(0, duration, {x = dx, y = dy}, easing)
  end
  self.tweens:newTimer(duration + 0.02, timerName)
end

function Hero:jumpTo(dx, dy, size, timerName, spinjump, factor, easing)
  local easing = easing or 'inOutQuad'
  local factor = factor or 1
  local duration = math.max(self:getMovementDuration(dx, dy, factor), 0.30)
  self.tweens:newTween(0, duration, {x = dx, y = dy}, easing)
  self.tweens:newTimer(duration + 0.02, timerName)
  self:setJump(size, spinjump, duration)
end

function Hero:updateSpeed(dt)
  self:applyMotion(dt)
  self.xspeed = self.x - self.xprevious
  self.yspeed = self.y - self.yprevious
  self.zspeed = self.z - self.zprevious

  self.gspeed = math.sqrt(self.xspeed^2 + self.yspeed^2)

  -- Handle direction
  if math.abs(self.xspeed) > 0 then
    if (self.directionLocked == false) then
      self.direction = utils.math.sign(self.xspeed)
    end
  else
    if self.unlockDirection then
      self.unlockDirection = false
      self.directionLocked = false
    end
  end

  if self.z > 0 and self.jump.spin == false then
    if self.zspeed > 0 then
      self:changeAnimation("jump")
    else
      self:changeAnimation("fall")
    end
  end

  self:setCustomSpeed(self.gspeed * 320)
end

function Hero:changeDirection(dt)
  -- Change direction by pressing left or right when selecting the next action
  if (self.keys["left"].isPressed) then
    self.direction = -1
  elseif (self.keys["right"].isPressed) then
    self.direction = 1
  end
end

function Hero:initJump()
  self.jump = {}
  self.jump.spin  = false
end

function Hero:setJump(size, spinjump, duration)
  local tweenDuration = duration / 2
  self.tweens:newTween(0, tweenDuration, {z = size}, 'outQuad')
  self.tweens:newTween(tweenDuration, tweenDuration, {z = 0}, 'inQuad')
  self.jump.spin = spinjump
end

function Hero:setMotionX(direction, speed)
  self.motion = speed
  self.motionDirection = direction
end

function Hero:applyMotion(dt)
  if self.motion ~= 0 and self.motion ~= nil then
    local dx = self.x + self.motion * self.motionDirection * dt
    -- {1, 0, "line", 5, true}
    local ox        = self.choregraphy.startx + (self.choregraphy.effectArea[1] * self.choregraphy.direction)
    local oy        = self.choregraphy.starty + self.choregraphy.effectArea[2]
    local shape     = self.choregraphy.effectArea[3]
    local size      = self.choregraphy.effectArea[4]
    local direction = self.choregraphy.direction

    local new_case_x = utils.math.round(dx)
    local new_case_y = utils.math.round(self.y)
    print(new_case_x, new_case_y, self.world:caseIsEmpty(new_case_x, new_case_y, self))
    if self.maputils.isInMask(dx, self.y, ox, oy, shape, size, direction) and self.world:caseIsEmpty(new_case_x, new_case_y, self) then
      self.x = dx
    else
      self.x = dx
      self.motion = 0
      if (self.blockingChoregraphy == 'action_dashForward') then
        self:unblockChoregraphy()
        self.direction = self.choregraphy.direction
      end
    end
  end
end

-- SIGNAL FUNCTIONS
-- All functions related to signal receiving

function Hero:receiveSignal(action_type, id)
  if id == nil then
    core.debug:print("battler/hero", "action selected : " .. action_type)
  else
    core.debug:print("battler/hero", "action selected : " .. action_type .. " (" .. id .. ")")
  end
  if (action_type == "defend") then
    self.turnAction = "defend"
    self:switchActiveBattler( )
  elseif (action_type == "attack") then
    --self:changeAnimation("hit1")
    self:attack()
  elseif (action_type == "skill") then
    self.world.cursor:unset( )
    self:useSkill(id, self.world.cursor.x, self.world.cursor.y)
  elseif (action_type == "cursorMove") then
    if (self.x ~= self.world.cursor.x) or (self.y ~= self.world.cursor.y) then
      self:changeAnimation("walk", true)
      self:goTo(self.world.cursor.x, self.world.cursor.y, 'cursorMove', 1)
      self.assets.sfx["woosh"]:play()
    else
      self.world:resetActiveGrid()
      self.scene.menu:set( self )
    end
    self.world.cursor:unset( )
  else
    self:switchActiveBattler( )
  end
end

function Hero:receiveBackSignal()
  self.world.cursor:set(self.x, self.y, "cursorMove")
  if (self.x ~= self.startx) or (self.y ~= self.starty) then
    self.world.cursor:set(self.x, self.y, "cursorMove")
    self.assets.sfx["woosh"]:play()
    self:changeAnimation("walk")
  end
end

function Hero:timerResponse(timer)
  if timer == "switchActiveBattler" then
    self.scene.turns:nextAction()
  elseif timer == "wait" then
    self.choregraphy.changeAction = true
  elseif timer == "cursorMove" then
    self:changeAnimation("idle")
    self.world:resetActiveGrid()
    self.scene.menu:set( self )
  elseif timer == 'backMove' then
    self:changeAnimation("idle")
    self.direction = self.directionPrevious
  elseif timer == 'action_jumpBack' then
    self.unlockDirection = true
    self:unblockChoregraphy()
  elseif timer == self.choregraphy.blockedBy then
    self:unblockChoregraphy()
  end
end

-- ACTION FUNCTIONS
-- All functions related to actions

function Hero:switchActiveBattler()
  print("Switching Active Battler")
  self.tweens:newTimer(0.15, "switchActiveBattler")
end

-- CHOREGRAPHY FUNCTIONS
-- All functions related to the choregraphy system

function Hero:initChoregraphySystem()
  self.choregraphy = ChoregraphySystem(self)
  self.blockingChoregraphy = nil
end

function Hero:attack(id, dx, dy)
  local skill = game.skills:getSkillData("attack")
  self.choregraphy:start(skill, dx, dy)
end

function Hero:useSkill(id, dx, dy)
  local skill = game.skills:getSkillData(id)
  self:setPP(skill.cost * -1, true)
  self.choregraphy:start(skill, dx, dy)
end

function Hero:updateChoregraphy(dt)
  self.choregraphy:update(dt)
end

function Hero:blockChoregraphy(isBlocked, blockedBy)
  if (isBlocked) then
    self.blockingChoregraphy = blockedBy
  end
end

function Hero:unblockChoregraphy()
  self.choregraphy:endAction()
  self.blockingChoregraphy = ""
end

-- ASSETS FUNCTIONS
-- Load and play assets needed by the character

function Hero:initSprite()
  self.assets:addSprite(self.charid, "datas/gamedata/characters/" .. self.charid .. "/sprites")
  self.assets.sprites[self.charid]:setCustomSpeed(16)
  self:setSprite(self.charid, 32, 48, true)
  self:cloneSprite()
  self:changeAnimation("idle")
end

function Hero:animationEnded(animation)
  if (animation == self.blockingChoregraphy) then
    self:unblockChoregraphy()
  end
end

function Hero:initVoices()
  self:addVoiceEffect("move")
  self:addVoiceEffect("turnstart")
end

function Hero:addVoiceEffect(name)
  local completename = self.charid .. "_" .. name
  local path = "datas/gamedata/characters/" .. self.charid .. "/voices/" .. name .. ".wav"
  self.assets:newSFX(completename, path)
end

function Hero:talk(name)
  local completename = self.charid .. "_" .. name
  self.assets.sfx[completename]:play()
end

-- DRAW FUNCTIONS
-- Draw everything related to the hero

function Hero:draw()
  self:drawSprite(0, -self.z)
end

function Hero:drawIcon(x, y)
  local iconID = 1
  self.assets.tileset["charicons"]:drawTile(iconID, x, y)
end

function Hero:drawHUD()
  self.statusbar:draw()
end

return Hero