require("config.util")

local mods = {}

function mods.startup_6dd(pat)
  pat:update_frame(223, 0, 1, { duration = 6 })
end

function mods.startup_6a(pat)
  pat:update_frame(302, 0, 0, { duration = 2 })
  pat:update_frame(302, 0, 2, { duration = 3 })
  pat:update_frame(302, 0, 3, { duration = 3 })
  pat:update_frame(302, 0, 4, { duration = 3 })
end

function mods.startup_3a(pat)
  -- for idx = 3, 5 do
  --   pat:update_frame(304, 0, idx, { duration = 4 })
  -- end

  -- pat:remove_frame(304, 0, 0)
  -- pat:remove_frame(304, 0, 0)
  -- pat:remove_frame(304, 0, 0)

  -- pat:split_frame(304, 0, 0, 1, 1)
  -- pat:split_frame(304, 0, 0, 1, 1)
  -- pat:split_frame(304, 0, 0, 1, 1)

  for idx = 0, 5 do
    pat:update_frame(304, 0, idx, { duration = 2 })
  end
end

function mods.untech_ja(pat)
  pat:update_frame(306, 0, 3, { untech = 30 })
  pat:update_frame(306, 0, 4, { untech = 30 })
end

function mods.untech_j6a(pat, untech)
  pat:update_frame(307, 0, 6, { untech = 60 })
  pat:update_frame(307, 0, 7, { untech = 60 })
end

function mods.recovery_j6a(pat)
  pat:update_frame(307, 0, 13, { duration = 4 })
  pat:update_frame(307, 0, 15, { duration = 4 })
end

function mods.j2a_damage_parameters(pat, damage, proration, limit)
  for idx = 0, 7 do
    pat:update_frame(308, 1, idx, {
      damage = damage,
      proration = proration,
      limit = limit
    })
  end
end

function mods.recovery_j8a(pat)
  pat:update_frame(309, 2, 4, { duration = 4 })
end

function mods.db_recovery(pat)
  pat:update_frame(408, 2, 1, { duration = 4 })
  pat:update_frame(408, 2, 2, { duration = 3 })
  pat:update_frame(408, 2, 3, { duration = 3 })
end

function mods.db_cancel(pat)
  for off = 0, 2 do
    pat:get_sequence(408, off):set_priority(50, 50)
  end
end

function mods.hit_parameters_b(pat)
  pat:update_frame(800, 0, 0, { hitstop_enemy = 5 })
end

function mods.motion_cancel_6b_j6b(pat)
  for seq = 401, 405, 4 do
    pat:update_frame(seq, 2, 4, function(frame)
      set_fflag(frame, FF_MOTION_CANCEL)
    end)
  end
end

function mods.motion_cancel_2b(pat)
  pat:update_frame(402, 0, 6, { duration = 3 })
  pat:update_frame(402, 0, 7, { duration = 22 })
end

function mods.motion_cancel_j2b(pat)
  -- pat:update_frame(406, 0, 6, { duration = 7 })
  -- pat:update_frame(406, 0, 7, { duration = 23 })
  pat:update_frame(406, 0, 6, { duration = 5 })
end

function mods.hit_parameters_6c(pat)
  pat:update_frame(806, 3, 0, {
    untech = 40,
    hitstop_enemy = 20,
    sp_damage = 50,
  })
end

function mods.bullet_priority_c(pat)
  for off = 0, 4 do
    pat:get_sequence(805, off):set_priority(20, 0)
  end
end

function mods.bullet_priority_6c(pat)
  for off = 0, 7 do
    pat:get_sequence(806, off):set_priority(20, 0)
  end
end

function mods.bullet_priority_2c(pat)
  for off = 0, 7 do
    pat:get_sequence(808, off):set_priority(20, 0)
  end
end

function mods.icicle_shot_startup(pat)
  for seq = 500, 502, 2 do
    pat:update_frame(seq, 0, 0, { duration = 3 })
    pat:update_frame(seq, 0, 1, { duration = 3 })
    pat:update_frame(seq, 0, 2, { duration = 4 })
    pat:update_frame(seq, 0, 3, { duration = 4 })
    pat:update_frame(seq, 1, 0, { duration = 4 })
    pat:update_frame(seq, 1, 1, { duration = 4 })
  end
end

function mods.frost_pillars_object_parameters(pat)
  for idx = 0, 3 do
    pat:update_frame(811, 11, idx, { sp_damage = 200 })
  end
end

function mods.frost_pillars_motion_cancel(pat)
  pat:update_frame(506, 2, 4, set_motion_cancel)
  pat:update_frame(506, 2, 6, set_motion_cancel)
end

function mods.freezing_light_motion_cancel(pat)
  for seq = 510, 512 do
    pat:update_frame(seq, 2, 6, set_motion_cancel)
  end
end

function mods.freezing_light_enable_multihit(pat)
  pat:update_frame(812, 0, 0, {
    -- hitstop_enemy = 10,
    limit = 5,
    proration = 960,
    damage = 150,
    sp_damage = 20,
  })
end

function mods.create_freezing_light_jc_version(pat)
  pat:add_mapping(513, 512)
end

function mods.ice_kick_hit_parameters(pat, untech)
  table.foreach({{530,3}, {531,3}, {532,1}, {533,1}}, function(seq, off)
    for idx = 0, 3 do
      pat:update_frame(seq, off, idx, {
        untech = untech
      })
    end
  end)
end

function mods.icicle_rise_motion_cancel(pat)
  pat:update_frame(565, 2, 6, set_motion_cancel)
  pat:update_frame(565, 2, 7, set_motion_cancel)
end

function mods.icicle_rise_object_parameters(pat)
  for off = 6, 7 do
    pat:update_frame(826, off, 0, {
      damage = 200,
      chip_damage = 40,
      untech = 60,
    })
  end
end

function mods.icicle_sword_ground_bounce(pat, y, untech)
  for seq = 570, 573 do
    pat:update_frame(seq, 2, 1, {
      untech = untech,
      hit_ani_air = 88,
      hit_ani_ground = 88,
      launch_vector_y = y,
      -- limit = 40,
    })
  end
end

function mods.icicle_sword_hit_parameters(pat)
  local function expand_collision_box(frame)
    local box = frame.collision[1]
    local width = math.abs(box.x2 - box.x1)
    box.x1 = box.x1 - width
    box.x2 = box.x2 - width
    box.y1 = box.y1 - 70
  end
  
  for seq = 570, 572, 2 do
    for off = 1, 3, 2 do
      for idx = 0, 7 do
        pat:update_frame(seq, off, idx, {
          launch_vector_x = 1300,
          launch_vector_y = 1000,
        })
      end
    end
  end

  for seq = 571, 573, 2 do
    for off = 1, 3, 2 do
      for idx = 0, 7 do
        pat:update_frame(seq, off, idx, {
          launch_vector_x = 1000,
          launch_vector_y = 2500,
        })
      end
    end
  end
end

function mods.icicle_bomb_motion_cancel(pat)
  for seq = 545, 547, 2 do
    pat:update_frame(seq, 0, 6, set_motion_cancel)
  end
end

function mods.icicle_bomb_object_parameters(pat)
end

function mods.cold_sprinkler_time_windows(pat)
  for seq = 602, 652, 50 do
    pat:update_frame(seq, 0, 0, { duration = 3 })
    pat:update_frame(seq, 0, 1, { duration = 3 })
    pat:update_frame(seq, 0, 2, { duration = 3 })
    pat:update_frame(seq, 0, 3, { duration = 35 })
    pat:update_frame(seq, 0, 14, { duration = 4 })
    pat:update_frame(seq, 0, 15, { duration = 4 })
    pat:remove_frame(seq, 0, 10)
    pat:remove_frame(seq, 0, 10)
  end
end

function mods.cold_sprinkler_object_parameters(pat)
  pat:update_frame(852, 5, 0, {
    launch_vector_x = 0,
    blockstop_enemy = 5,
  })
end

return function(pat)
  -- mods.startup_6dd(pat)
  mods.startup_6a(pat)
  mods.untech_ja(pat)
  -- mods.untech_j6a(pat)
  mods.recovery_j6a(pat)
  mods.recovery_j8a(pat)
  mods.j2a_damage_parameters(pat, 250, 950, 10)

  if config:get("chirno", "3a", "reduce_startup") then
    mods.startup_3a(pat)
  end
  
  mods.db_recovery(pat)
  
  if config:get("chirno", "db", "special_cancelable") then
    mods.db_cancel(pat)
  end

  if config:get("chirno", "b_series", "increase_hitstop") then
    mods.hit_parameters_b(pat)
  end

  mods.hit_parameters_6c(pat)
  mods.motion_cancel_6b_j6b(pat)

  if config:get("chirno", "b_series", "2b_j2b", "reduce_motion_cancel") then
    mods.motion_cancel_2b(pat)
    mods.motion_cancel_j2b(pat)
  end

  if config:get("chirno", "c_series", "high_priority") then
    mods.bullet_priority_c(pat)
    mods.bullet_priority_6c(pat)
    mods.bullet_priority_2c(pat)
  end
  
  mods.icicle_shot_startup(pat)

  if config:get("chirno", "frost_pillars", "reduce_motion_cancel") then
    mods.frost_pillars_motion_cancel(pat)
  end

  if config:get("chirno", "frost_pillars", "increase_spirit_damage") then
    mods.frost_pillars_object_parameters(pat)
  end
  
  if config:get("chirno", "freezing_light", "enable_multihit") then
    mods.freezing_light_enable_multihit(pat)
    -- mods.freezing_light_motion_cancel(pat)
  else
    mods.freezing_light_motion_cancel(pat)
  end

  mods.create_freezing_light_jc_version(pat)
  mods.icicle_rise_motion_cancel(pat)
  mods.icicle_rise_object_parameters(pat)

  mods.ice_kick_hit_parameters(pat, config:getdef(
    "chirno", "ice_kick", "untech", 45
  ))

  if config:get("chirno", "icicle_sword", "ground_bounce") == 1 then
    mods.icicle_sword_ground_bounce(pat, -1500, 60)
  elseif config:get("chirno", "icicle_sword", "ground_bounce") == 2 then
    mods.icicle_sword_ground_bounce(pat, -2450, 90)
  end

  -- mods.icicle_sword_hit_parameters(pat)
  mods.icicle_bomb_motion_cancel(pat)
  mods.icicle_bomb_object_parameters(pat)

  mods.cold_sprinkler_time_windows(pat)
  mods.cold_sprinkler_object_parameters(pat)
end