local DonBGBase       = require("background/bg_objects/donbg/base")
local Footer          = require("background/bg_objects/footer")
local Dancer          = require("background/bg_objects/dancer")
local RendaController = require("background/bg_objects/renda")
local ChibiController = require("background/bg_objects/chibi")

local COLLAB_PATH     = "background/collab/i7tri"
local MAX_DANCERS     = 5

local I7triBGNormal   = {}
I7triBGNormal.__index = I7triBGNormal

function I7triBGNormal.new()
    local self = setmetatable({}, I7triBGNormal)
    self.name = "bg_0"
    tex.load_folder(COLLAB_PATH, "bg_normal/" .. self.name)
    self.pulse = anim.texture_change(500, { { 0, 250, 0 }, { 250, 500, 1 } }, { loop = true })
    self.pulse:start()

    local members_info = tex.get_texture_info(self.name, "members")
    local members_frames = (members_info and members_info.frame_count) or 1
    local members_textures = {}
    for i = 0, members_frames - 1 do
        table.insert(members_textures, { i * 1500, (i + 1) * 1500, i })
    end
    self.member_cycle = anim.texture_change(members_frames * 1500, members_textures, { loop = true })
    self.member_cycle:start()

    self._id_bg        = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "background") or 0
    self._id_equalizer = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "equalizer") or 0
    self._id_rig       = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "rig") or 0
    self._id_rim       = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "rim") or 0
    self._id_members   = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "members") or 0
    self._id_glow      = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "glow") or 0
    return self
end

function I7triBGNormal:update(current_time_ms)
    self.pulse:update(current_time_ms)
    self.member_cycle:update(current_time_ms)
end

function I7triBGNormal:draw()
    tex.draw_texture(self._id_equalizer, { frame = self.pulse.attribute })
    tex.draw_texture(self._id_bg)
    tex.draw_texture(self._id_glow)
    tex.draw_texture(self._id_members, { frame = self.member_cycle.attribute })
    tex.draw_texture(self._id_rig)
    tex.draw_texture(self._id_rim)
end

function I7triBGNormal:destroy() tex.unload_folder(COLLAB_PATH, "bg_normal/" .. self.name) end

local I7triBGFever   = {}
I7triBGFever.__index = I7triBGFever

function I7triBGFever.new()
    local self = setmetatable({}, I7triBGFever)
    self.name = "bg_fever_0"
    tex.load_folder(COLLAB_PATH, "bg_fever/" .. self.name)

    local members_info = tex.get_texture_info(self.name, "members")
    local members_frames = (members_info and members_info.frame_count) or 1
    local members_textures = {}
    for i = 0, members_frames - 1 do
        table.insert(members_textures, { i * 1500, (i + 1) * 1500, i })
    end
    self.member_cycle = anim.texture_change(members_frames * 1500, members_textures, { loop = true })
    self.member_cycle:start()

    local logo_info = tex.get_texture_info(self.name, "logo")
    local logo_frames = (logo_info and logo_info.frame_count) or 1
    local logo_textures = {}
    for i = 0, logo_frames - 1 do
        table.insert(logo_textures, { i * 400, (i + 1) * 400, i })
    end
    self.logo_flicker = anim.texture_change(logo_frames * 400, logo_textures, { loop = true })
    self.logo_flicker:start()

    self._id_floor_gold = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "floor_gold") or 0
    self._id_confetti   = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "confetti") or 0
    self._id_bg         = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "background") or 0
    self._id_rig        = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "rig") or 0
    self._id_rim        = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "rim") or 0
    self._id_members    = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "members") or 0
    self._id_glow       = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "glow") or 0
    self._id_rays       = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "rays") or 0
    self._id_logo       = tex.get_texture(COLLAB_PATH .. "/" .. self.name .. "/" .. "logo") or 0
    return self
end

function I7triBGFever:start() end

function I7triBGFever:update(current_time_ms)
    self.member_cycle:update(current_time_ms)
    self.logo_flicker:update(current_time_ms)
end

function I7triBGFever:draw()
    tex.draw_texture(self._id_bg)
    tex.draw_texture(self._id_rays)
    tex.draw_texture(self._id_glow)
    tex.draw_texture(self._id_members, { frame = self.member_cycle.attribute })
    tex.draw_texture(self._id_logo, { frame = self.logo_flicker.attribute })
    tex.draw_texture(self._id_rig)
    tex.draw_texture(self._id_floor_gold)
    tex.draw_texture(self._id_rim)
    tex.draw_texture(self._id_confetti)
end

function I7triBGFever:destroy() tex.unload_folder(COLLAB_PATH, "bg_fever/" .. self.name) end

-- Background

local I7triBackground = {}
I7triBackground.__index = I7triBackground

function I7triBackground.new(player_num, bpm)
    local self          = setmetatable({}, I7triBackground)
    self.donbg          = DonBGBase.new(1, player_num, COLLAB_PATH)
    self.bg_normal      = I7triBGNormal.new()
    self.bg_fever       = I7triBGFever.new()
    self.footer         = Footer.new(COLLAB_PATH, -1)
    self.dancer         = Dancer.BaseDancerGroup.new(0, bpm, MAX_DANCERS, COLLAB_PATH)
    self.renda          = RendaController.new(COLLAB_PATH, 0)
    self.chibi          = ChibiController.new(bpm, COLLAB_PATH, 1)
    self.is_clear       = false
    self.last_milestone = 1
    return self
end

function I7triBackground:update(current_ms, bpm)
    self.donbg:update(current_ms)
    self.bg_normal:update(current_ms)
    self.dancer:update(current_ms, bpm)
    self.renda:update(current_ms)
    self.chibi:update(current_ms, bpm)
end

function I7triBackground:handle_good(player_num) self.chibi:add_chibi(player_num, false) end

function I7triBackground:handle_ok(player_num) self.chibi:add_chibi(player_num, false) end

function I7triBackground:handle_bad(player_num) self.chibi:add_chibi(player_num, true) end

function I7triBackground:handle_drumroll(player_num) self.renda:add_renda() end

function I7triBackground:handle_balloon(player_num) self.renda:add_renda() end

function I7triBackground:handle_gauge(player_num, progress, is_clear, is_rainbow)
    self.donbg:set_clear(is_clear)
    self.is_clear = is_clear

    local current_milestone
    if is_clear then
        current_milestone = MAX_DANCERS
    else
        current_milestone = math.min(MAX_DANCERS - 1, math.floor(progress * MAX_DANCERS))
    end
    if current_milestone > self.last_milestone then
        for _ = 1, current_milestone - self.last_milestone do self.dancer:add_dancer() end
        self.last_milestone = current_milestone
    elseif current_milestone < self.last_milestone then
        for _ = 1, self.last_milestone - current_milestone do self.dancer:remove_dancer() end
        self.last_milestone = current_milestone
    end
end

function I7triBackground:draw_back()
    self.bg_normal:draw()
    if self.is_clear then self.bg_fever:draw() end
    self.donbg:draw()
    self.renda:draw()
    self.dancer:draw()
    self.footer:draw()
    self.chibi:draw()
end

function I7triBackground:draw_fore() end

function I7triBackground:destroy()
    self.donbg:destroy()
    self.bg_normal:destroy()
    self.bg_fever:destroy()
    self.dancer:destroy()
    self.footer:destroy()
    self.renda:destroy()
    self.chibi:destroy()
end

return I7triBackground