--luacheck: ignore
local Basic_markets = require 'functions.basic_markets'
local Biter_pets = require 'modules.biter_pets'
local get_noise = require 'maps.stone_maze.noise'

local room = {}

room.empty = function(surface, cell_left_top, direction)
end

room.worms = function(surface, cell_left_top, direction)
    local amount = math.ceil(get_biter_amount() * 0.1)
    local tile_positions = {}
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    for x = 0.5, grid_size - 0.5, 1 do
        for y = 0.5, grid_size - 0.5, 1 do
            local pos = {left_top.x + x, left_top.y + y}
            tile_positions[#tile_positions + 1] = pos
        end
    end

    table.shuffle_table(tile_positions)

    for _, pos in pairs(tile_positions) do
        local worm = get_worm()
        if surface.can_place_entity({name = worm, position = pos}) and math.random(1, 4) == 1 then
            surface.create_entity({name = worm, position = pos, force = 'enemy'})
            amount = amount - 1
        end
        if amount < 1 then
            break
        end
    end
end

room.nests = function(surface, cell_left_top, direction)
    local amount = math.ceil(get_biter_amount() * 0.1)
    local tile_positions = {}
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    for x = 0.5, grid_size - 0.5, 1 do
        for y = 0.5, grid_size - 0.5, 1 do
            local pos = {left_top.x + x, left_top.y + y}
            tile_positions[#tile_positions + 1] = pos
        end
    end

    table.shuffle_table(tile_positions)

    for _, pos in pairs(tile_positions) do
        if surface.can_place_entity({name = 'spitter-spawner', position = pos}) then
            if math.random(1, 4) == 1 then
                surface.create_entity({name = 'spitter-spawner', position = pos, force = 'enemy'})
            else
                surface.create_entity({name = 'biter-spawner', position = pos, force = 'enemy'})
            end
            amount = amount - 1
        end
        if amount < 1 then
            break
        end
    end
end

room.biters = function(surface, cell_left_top, direction)
    local amount = get_biter_amount()
    local tile_positions = {}
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    for x = 0.5, grid_size - 0.5, 1 do
        for y = 0.5, grid_size - 0.5, 1 do
            local pos = {left_top.x + x, left_top.y + y}
            tile_positions[#tile_positions + 1] = pos
        end
    end

    table.shuffle_table(tile_positions)

    for _, pos in pairs(tile_positions) do
        local enemy = get_biter()
        if surface.can_place_entity({name = enemy, position = pos}) then
            surface.create_entity({name = enemy, position = pos, force = 'enemy'})
            amount = amount - 1
        end
        if amount < 1 then
            break
        end
    end
end

room.spitters = function(surface, cell_left_top, direction)
    local amount = get_biter_amount()
    local tile_positions = {}
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    for x = 0.5, grid_size - 0.5, 1 do
        for y = 0.5, grid_size - 0.5, 1 do
            local pos = {left_top.x + x, left_top.y + y}
            tile_positions[#tile_positions + 1] = pos
        end
    end

    table.shuffle_table(tile_positions)

    for _, pos in pairs(tile_positions) do
        local enemy = get_spitter()
        if surface.can_place_entity({name = enemy, position = pos}) then
            surface.create_entity({name = enemy, position = pos, force = 'enemy'})
            amount = amount - 1
        end
        if amount < 1 then
            break
        end
    end
end

room.spitters_and_biters = function(surface, cell_left_top, direction)
    local amount = get_biter_amount()
    local tile_positions = {}
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    for x = 0.5, grid_size - 0.5, 1 do
        for y = 0.5, grid_size - 0.5, 1 do
            local pos = {left_top.x + x, left_top.y + y}
            tile_positions[#tile_positions + 1] = pos
        end
    end

    table.shuffle_table(tile_positions)

    for _, pos in pairs(tile_positions) do
        local enemy = get_biter()
        if math.random(1, 3) == 1 then
            enemy = get_spitter()
        end
        if surface.can_place_entity({name = enemy, position = pos, force = 'enemy'}) then
            surface.create_entity({name = enemy, position = pos, force = 'enemy'})
            amount = amount - 1
        end
        if amount < 1 then
            break
        end
    end
end

room.checkerboard_ore = function(surface, cell_left_top, direction)
    local ores = {'coal', 'iron-ore', 'copper-ore', 'stone'}
    table.shuffle_table(ores)

    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    for x = 1, grid_size - 2, 1 do
        for y = 1, grid_size - 2, 1 do
            local pos = {left_top.x + x, left_top.y + y}
            if x % 2 == y % 2 then
                surface.create_entity({name = ores[1], position = pos, force = 'neutral', amount = 256 + global.maze_depth * 4})
            else
                surface.create_entity({name = ores[2], position = pos, force = 'neutral', amount = 256 + global.maze_depth * 4})
            end
            surface.set_tiles({{name = 'grass-2', position = pos}}, true)
        end
    end
end

room.single_oil = function(surface, cell_left_top, direction)
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    surface.create_entity({name = 'crude-oil', position = {left_top.x + grid_size * 0.5, left_top.y + grid_size * 0.5}, amount = 100000 + global.maze_depth * 4000})
    room.spitters(surface, cell_left_top, direction)
    room.biters(surface, cell_left_top, direction)
end

room.tree_ring = function(surface, cell_left_top, direction)
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    local tree = tree_raffle[math.random(1, #tree_raffle)]
    map_functions.draw_noise_tile_circle({x = left_top.x + grid_size * 0.5, y = left_top.y + grid_size * 0.5}, 'grass-2', surface, grid_size * 0.35)
    map_functions.draw_noise_entity_ring(surface, {x = left_top.x + grid_size * 0.5, y = left_top.y + grid_size * 0.5}, tree, 'neutral', grid_size * 0.25, grid_size * 0.33)
    surface.spill_item_stack({x = left_top.x + grid_size * 0.5, y = left_top.y + grid_size * 0.5}, get_loot_item_stack(), true, nil, true)
    room.spitters(surface, cell_left_top, direction)
end

room.tons_of_trees = function(surface, cell_left_top, direction)
    local tree = tree_raffle[math.random(1, #tree_raffle)]
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    local seed = math.random(1000, 1000000)
    for x = 0.5, grid_size - 0.5, 1 do
        for y = 0.5, grid_size - 0.5, 1 do
            local pos = {left_top.x + x, left_top.y + y}
            local noise = get_noise('trees_01', pos, seed)
            if math.random(1, 3) == 1 then
                if noise > 0.25 or noise < -0.25 then
                    surface.create_entity({name = tree, position = pos, force = 'neutral'})
                end
            end
        end
    end
end

room.loot_crate = function(surface, cell_left_top, direction)
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    map_functions.draw_noise_tile_circle({x = left_top.x + grid_size * 0.5, y = left_top.y + grid_size * 0.5}, 'stone-path', surface, grid_size * 0.2)
    local chest = surface.create_entity({name = 'wooden-chest', position = {left_top.x + grid_size * 0.5, left_top.y + grid_size * 0.5}, force = 'neutral'})
    chest.destructible = false
    chest.insert(get_loot_item_stack())
    if math.random(1, 2) == 1 then
        chest.insert(get_loot_item_stack())
    end
    room.spitters_and_biters(surface, cell_left_top, direction)
end

room.single_rock = function(surface, cell_left_top, direction)
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    surface.create_entity({name = rock_raffle[math.random(1, #rock_raffle)], position = {left_top.x + grid_size * 0.5, left_top.y + grid_size * 0.5}, force = 'neutral'})
    room.biters(surface, cell_left_top, direction)
end

room.three_rocks = function(surface, cell_left_top, direction)
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}

    if math.random(1, 2) == 1 then
        local position = surface.find_non_colliding_position('market', {x = left_top.x + grid_size * 0.5, y = left_top.y + grid_size * 0.5}, grid_size * 0.5, 1)
        if position then
            Basic_markets.super_market(surface, position, math.floor(global.maze_depth * 0.01) + 1)
        end
    end

    surface.create_entity({name = rock_raffle[math.random(1, #rock_raffle)], position = {left_top.x + grid_size * 0.2, left_top.y + grid_size * 0.8}, force = 'neutral'})
    surface.create_entity({name = rock_raffle[math.random(1, #rock_raffle)], position = {left_top.x + grid_size * 0.8, left_top.y + grid_size * 0.8}, force = 'neutral'})
    surface.create_entity({name = rock_raffle[math.random(1, #rock_raffle)], position = {left_top.x + grid_size * 0.5, left_top.y + grid_size * 0.2}, force = 'neutral'})
    room.biters(surface, cell_left_top, direction)
end

room.quad_rocks = function(surface, cell_left_top, direction)
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}

    if math.random(1, 2) == 1 then
        local position = surface.find_non_colliding_position('market', {x = left_top.x + grid_size * 0.5, y = left_top.y + grid_size * 0.5}, grid_size * 0.5, 1)
        if position then
            Basic_markets.super_market(surface, position, math.floor(global.maze_depth * 0.01) + 1)
        end
    end

    surface.create_entity({name = rock_raffle[math.random(1, #rock_raffle)], position = {left_top.x + grid_size * 0.15, left_top.y + grid_size * 0.15}, force = 'neutral'})
    surface.create_entity({name = rock_raffle[math.random(1, #rock_raffle)], position = {left_top.x + grid_size * 0.15, left_top.y + grid_size * 0.85}, force = 'neutral'})
    surface.create_entity({name = rock_raffle[math.random(1, #rock_raffle)], position = {left_top.x + grid_size * 0.85, left_top.y + grid_size * 0.15}, force = 'neutral'})
    surface.create_entity({name = rock_raffle[math.random(1, #rock_raffle)], position = {left_top.x + grid_size * 0.85, left_top.y + grid_size * 0.85}, force = 'neutral'})
    room.spitters_and_biters(surface, cell_left_top, direction)
end

room.tons_of_rocks = function(surface, cell_left_top, direction)
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}

    local seed = game.surfaces[1].map_gen_settings.seed
    for x = 0.5, grid_size - 0.5, 1 do
        for y = 0.5, grid_size - 0.5, 1 do
            local pos = {left_top.x + x, left_top.y + y}
            local noise = get_noise('trees_01', pos, seed)
            if math.random(1, 3) ~= 1 then
                if noise > 0.2 or noise < -0.2 then
                    surface.create_entity({name = rock_raffle[math.random(1, #rock_raffle)], position = pos, force = 'neutral'})
                    if math.random(1, 512) == 1 then
                        surface.create_entity({name = get_worm(), position = pos, force = 'enemy'})
                    end
                end
            end
        end
    end
end

room.some_scrap = function(surface, cell_left_top, direction)
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    for x = math.floor(grid_size * 0.15), math.floor(grid_size * 0.85) - 1, 1 do
        for y = math.floor(grid_size * 0.15), math.floor(grid_size * 0.85) - 1, 1 do
            local pos = {left_top.x + x, left_top.y + y}
            if math.random(1, 16) == 1 then
                surface.create_entity({name = get_scrap(), position = pos, force = 'neutral'})
            end
        end
    end
    room.worms(surface, cell_left_top, direction)
end

room.tons_of_scrap = function(surface, cell_left_top, direction)
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    local seed = game.surfaces[1].map_gen_settings.seed + 10000
    for x = 0.5, grid_size - 0.5, 1 do
        for y = 0.5, grid_size - 0.5, 1 do
            local pos = {left_top.x + x, left_top.y + y}
            local noise = get_noise('scrap_01', pos, seed)
            if math.random(1, 2) == 1 and noise > 0 then
                surface.create_entity({name = get_scrap(), position = pos, force = 'neutral'})
            end
        end
    end
end

room.pond = function(surface, cell_left_top, direction)
    local tree = tree_raffle[math.random(1, #tree_raffle)]
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    map_functions.draw_noise_tile_circle({x = left_top.x + grid_size * 0.5, y = left_top.y + grid_size * 0.5}, 'water', surface, grid_size * 0.3)
    for x = 0.5, grid_size - 0.5, 1 do
        for y = 0.5, grid_size - 0.5, 1 do
            local pos = {left_top.x + x, left_top.y + y}
            if math.random(1, 16) == 1 then
                if surface.can_place_entity({name = 'fish', position = pos, force = 'neutral'}) then
                    surface.create_entity({name = 'fish', position = pos, force = 'neutral'})
                end
            end
            if math.random(1, 40) == 1 then
                if surface.can_place_entity({name = tree, position = pos, force = 'neutral'}) then
                    surface.create_entity({name = tree, position = pos, force = 'neutral'})
                end
            end
        end
    end
end

room.maze = function(surface, cell_left_top, direction)
    local tree = tree_raffle[math.random(1, #tree_raffle)]
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    create_maze(surface, {x = left_top.x + grid_size * 0.5, y = left_top.y + grid_size * 0.5}, math.floor(grid_size * 0.25), 3, 'stone-wall', 'enemy', true)

    surface.spill_item_stack({x = left_top.x + grid_size * 0.5, y = left_top.y + grid_size * 0.5}, get_loot_item_stack(), true, nil, true)
end

room.mr_nibbles = function(surface, cell_left_top, direction)
    local left_top = {x = cell_left_top.x * grid_size, y = cell_left_top.y * grid_size}
    local nibbler

    local str = 'biter'
    if math.random(1, 2) == 1 then
        str = 'spitter'
    end

    if global.maze_depth > 250 then
        nibbler = surface.create_entity({name = 'behemoth-' .. str, position = {left_top.x + grid_size * 0.5, left_top.y + grid_size * 0.5}, force = 'enemy'})
    else
        nibbler = surface.create_entity({name = 'big-' .. str, position = {left_top.x + grid_size * 0.5, left_top.y + grid_size * 0.5}, force = 'enemy'})
    end

    Biter_pets.tame_unit_for_closest_player(nibbler)
end

local room_weights = {
    {func = room.worms, weight = 12},
    {func = room.nests, weight = 8},
    {func = room.tons_of_trees, weight = 15},
    {func = room.tons_of_rocks, weight = 35},
    {func = room.quad_rocks, weight = 7},
    {func = room.three_rocks, weight = 4},
    {func = room.mr_nibbles, weight = 3},
    {func = room.single_rock, weight = 8},
    {func = room.checkerboard_ore, weight = 7},
    {func = room.single_oil, weight = 5},
    --{func = room.some_scrap, weight = 10},
    {func = room.tons_of_scrap, weight = 15},
    --{func = room.empty, weight = 1},

    {func = room.pond, weight = 8},
    {func = room.loot_crate, weight = 9},
    {func = room.tree_ring, weight = 9},
    {func = room.maze, weight = 4}
}

local room_shuffle = {}
for _, r in pairs(room_weights) do
    for c = 1, r.weight, 1 do
        room_shuffle[#room_shuffle + 1] = r.func
    end
end

return room_shuffle