--luacheck: ignore
local Event = require 'utils.event'
local Global = require 'utils.global'
local Task = require 'utils.task'
local arty_count = {}
local Public = {}
local Token = require 'utils.token'
local WPT = require 'maps.amap.table'
local artillery_target_entities = {
    'character',
    'tank',
    'car',
    'radar',
    'lab',
    'furnace',
    'locomotive',
    'cargo-wagon',
    'fluid-wagon',
    'artillery-wagon',
    'artillery-turret',
    'laser-turret',
    'gun-turret',
    'flamethrower-turret',
    --  'silo',
    'spidertron'
}

Global.register(
    arty_count,
    function(tbl)
        arty_count = tbl
    end
)

function Public.reset_table()
    arty_count.max = 200
    arty_count.all = {}
    arty_count.count = 0
    arty_count.pace = 1
    arty_count.radius = 350
    arty_count.distance = 1400
    arty_count.surface = {}
end

function Public.get(key)
    if key then
        return arty_count[key]
    else
        return arty_count
    end
end

function Public.set(key, value)
    if key and (value or value == false) then
        this[key] = value
        return this[key]
    elseif key then
        return this[key]
    else
        return this
    end
end

local on_init = function()
    Public.reset_table()
end

local function add_bullet()
    for k, p in pairs(arty_count.all) do
        if arty_count.all[k].valid then
            arty_count.all[k].insert {name = 'artillery-shell', count = '5'}
        end
    end
end
local function on_chunk_generated(event)
    local surface = event.surface
    local left_top_x = event.area.left_top.x
    local left_top_y = event.area.left_top.y

    local position
    for x = 0, 31, 1 do
        for y = 0, 31, 1 do
            position = {x = left_top_x + x, y = left_top_y + y}
            local q = position.x * position.x
            local w = position.y * position.y
            local distance = math.sqrt(q + w)

            if distance >= arty_count.distance then
                if arty_count.count >= arty_count.max then
                    return
                else
                    local roll = math.random(1, 2024)
                    if roll == 1 then
                        local arty = surface.create_entity {name = 'artillery-turret', position = position, force = 'enemy'}
                        --  arty.insert{name='artillery-shell', count = '5'}
                        --local k = #arty_count.all
                        --      game.print(k)
                        arty_count.all[arty.unit_number] = arty
                        -- game.print(arty_count.all[1].name)
                        arty_count.count = arty_count.count + 1
                    --    game.print(arty_count.count)
                    -- game.print(position)
                    end
                end
            end
        end
    end
end

local function on_entity_died(event)
    local entity = event.entity

    if not entity or not entity.valid then
        return
    end

    if arty_count.all[entity.unit_number] then
        arty_count.all[entity.unit_number] = nil
        arty_count.count = arty_count.count - 1
    end
    -- local force = entity.force
    --  local name = entity.name
    --   if name == 'artillery-turret' and force.name == 'enemy' then
    -- arty_count.all[entity.unit_number] = nil
    --     arty_count.count = arty_count.count -1
    --
    --      if arty_count.count <= 0 then
    --        arty_count.count = 0
    --      end
end

function on_player_changed_position(event)
    local player = game.players[event.player_index]
    local surface = player.surface
    if not surface.valid then
        return
    end

    local position = player.position

    local q = position.x * position.x
    local w = position.y * position.y
    local distance = math.sqrt(q + w)
    --artillery-targeting-remote
    game.print('123')
    surface.create_entity(
        {
            name = 'artillery-targeting-remote',
            position = position,
            force = 'enemy'
            --  target = position,
            --  speed = 0.001
        }
    )
    game.print('logging')
end
local artillery_target_callback =
    Token.register(
    function(data)
        local position = data.position
        local entity = data.entity

        if not entity.valid then
            return
        end

        local tx, ty = position.x, position.y
        local pos = entity.position
        local x, y = pos.x, pos.y
        local dx, dy = tx - x, ty - y
        local d = dx * dx + dy * dy
        --  if d >= 1024 and d <= 441398 then -- 704 in depth~
        if entity.name == 'character' then
            entity.surface.create_entity {
                name = 'artillery-projectile',
                position = position,
                target = entity,
                force = 'enemy',
                speed = arty_count.pace
            }
        elseif entity.name ~= 'character' then
            entity.surface.create_entity {
                name = 'rocket',
                position = position,
                target = entity,
                force = 'enemy',
                speed = arty_count.pace
            }
        end
    end
    --  end
)

local function do_artillery_turrets_targets()
    --local surface = arty_count.surface
    local this = WPT.get()
    local surface = game.surfaces[this.active_surface_index]
    --选取重炮
    local roll_table = {}
    for index, arty in pairs(arty_count.all) do
        if arty.valid then
            roll_table[#roll_table + 1] = arty
        else
            arty_count.all[index] = nil -- <- if not valid, remove from table
            arty_count.count = arty_count.count - 1
        end
    end
    if #roll_table <= 0 then
        return
    end
    local roll = math.random(1, #roll_table)
    local position = roll_table[roll].position

    --扫描区域
    --   local normal_area = {left_top = {-480, -480}, right_bottom = {480, 480}}
    -- game.print(123)
    -- normal_area=  roll_table[roll].artillery_area
    -- game.print(12)
    local entities = surface.find_entities_filtered {position = position, radius = arty_count.radius, name = artillery_target_entities, force = game.forces.player}

    -- local entities = surface.find_entities_filtered {area = normal_area, name = artillery_target_entities, force = 'player'}
    if #entities == 0 then
        return
    end

    --开火
    for i = 1, arty_count.count do
        local entity = entities[math.random(#entities)]
        --game.print(entity.position)
        if entity and entity.valid then
            local data = {position = position, entity = entity}
            Task.set_timeout_in_ticks(i * 60, artillery_target_callback, data)
        end
    end
end
Event.add(defines.events.on_chunk_generated, on_chunk_generated)
Event.add(defines.events.on_entity_died, on_entity_died)
--Event.add(defines.events.on_player_changed_position, on_player_changed_position)
--Event.on_nth_tick(600, add_bullet)
Event.on_nth_tick(10, do_artillery_turrets_targets)
Event.on_init(on_init)

return Public