require("config.util")

local mods = {}

function mods.modify_dash(pat)
  local function set_graze(frame)
    set_fflag(frame, FF_GRAZE)
  end

  pat:update_frame(204, 0, 3, { duration = 10 })

  for idx = 3, 5 do
    pat:update_frame(204, 0, idx, set_graze)
  end
end

function mods.startup_daa(pat)
  for idx = 0, 5 do
    pat:update_frame(305, 1, idx, { duration = 2 })
  end
end

function mods.cancel_priority_daa(pat)
  pat:get_sequence(305, 1):set_priority(50, 50)
end

function mods.hitbox_j2a(pat)
  pat:update_frame(308, 1, 0, function(frame)
    frame.attackbox[1].x2 = 128
    frame.attackbox[2].x2 = 144
  end)
end

function mods.cancel_priority_j2a(pat)
  pat:get_sequence(308, 2):set_priority(20, 50)
end

function mods.motion_cancel_b(pat)
  pat:split_frame(400, 0, 6, 5, 6)
  pat:update_frame(400, 0, 7, set_motion_cancel)
  pat:update_frame(400, 0, 8, set_motion_cancel)
end

function mods.motion_cancel_6b(pat)
  pat:update_frame(401, 0, 7, { duration = 12 })
  pat:update_frame(401, 0, 8, { duration = 5 })
end

function mods.motion_cancel_2b(pat)
  pat:update_frame(402, 0, 5, { duration = 11 })
  pat:update_frame(402, 0, 6, { duration = 8 })
end

function mods.motion_cancel_jb_series(pat)
  for seq = 404, 406 do
    pat:update_frame(seq, 0, 6, set_motion_cancel)
  end
end

function mods.motion_cancel_c(pat)
  pat:update_frame(410, 1, 5, set_motion_cancel)
end

function mods.bullet_parameters_c(pat, sp_damage)
  pat:update_frame(801, 0, 0, { sp_damage = sp_damage })
end

function mods.lotus_stance_cut_motion_cancel(pat)
  for seq = 505, 506 do
    pat:update_frame(seq, 0, 7, { duration = 8 })
  end

  for seq = 507, 508 do
    pat:update_frame(seq, 0, 8, { duration = 8 })
  end

  pat:update_frame(506, 0, 3, { duration = 10 })
  pat:update_frame(508, 0, 4, { duration = 10 })
end

function mods.heart_carving_slash_startup(pat)
  pat:update_frame(545, 0, 2, { duration = 5 })
  pat:update_frame(546, 0, 2, { duration = 10 })
end

function mods.sword_of_cycles_damage(pat)
  pat:update_frame(612, 2, 6, { damage = 1100 })
end

function mods.ascension_to_nirvana_damage(pat)
  local function change(frame)
    -- frame.proration = 950
    frame.damage = 560
    frame.chip_damage = 56
  end

  for idx = 2, 6 do
    pat:update_frame(857, 0, idx, change)
  end

  for idx = 0, 5 do
    pat:update_frame(857, 1, idx, change)
  end
end

function mods.ascension_to_nirvana_sp_damage(pat)
end

function mods.blue_sword_parameters(pat)
  for idx = 12, 17 do
    pat:update_frame(604, 0, idx, { limit = 5 })
  end
end

return function(pat)
  if config:get("youmu", "dash", "continuous_graze") then
    mods.modify_dash(pat)
  end

  if config:get("youmu", "j2a", "increase_hitbox") then
    mods.hitbox_j2a(pat)
  end

  if config:get("youmu", "j2a", "skill_cancelable") then
    mods.cancel_priority_j2a(pat)
  end

  if config:get("youmu", "daa", "reduce_startup") then
    mods.startup_daa(pat)
  end

  if config:get("youmu", "daa", "skill_cancelable") then
    mods.cancel_priority_daa(pat)
  end

  if config:get("youmu", "b_series", "faster_motion_cancel") then
    mods.motion_cancel_b(pat)
    mods.motion_cancel_2b(pat)
    mods.motion_cancel_6b(pat)
  end

  if config:get("youmu", "jb_series", "faster_motion_cancel") then
    mods.motion_cancel_jb_series(pat)
  end

  mods.motion_cancel_c(pat)
  mods.bullet_parameters_c(pat, config:getdef("youmu", "c_series", "spirit_damage", 15))
  mods.lotus_stance_cut_motion_cancel(pat)

  if config:get("youmu", "heart_carving_slash", "reduce_startup") then
    mods.heart_carving_slash_startup(pat)
  end
  
  if config:get("youmu", "sword_of_cycles", "reduce_damage") then
    mods.sword_of_cycles_damage(pat)
  end

  if config:get("youmu", "ascension_to_nirvana", "reduce_damage") then
    mods.ascension_to_nirvana_damage(pat)
  end

  if config:get("youmu", "ascension_to_nirvana", "increase_spirit_damage") then
    mods.ascension_to_nirvana_sp_damage(pat)
  end
  
  mods.blue_sword_parameters(pat)
end