local vim = vim

local M = {}

M.defaults = {
  position = 'right',
  width = 25,
  highlight_hovered_item = true,
  guides = {
    enabled = true,
    markers = {
      bottom = '└',
      middle = '├',
      vertical = '│',
      horizontal = '─',
    },
  },
  border = 'single',
  relative_width = true,
  auto_close = false,
  auto_preview = false,
  open_hover_on_preview = true,
  show_numbers = false,
  show_relative_numbers = false,
  show_cursorline = true,
  show_symbol_details = true,
  preview_bg_highlight = 'Pmenu',
  winblend = 0,
  autofold_depth = nil,
  auto_unfold_hover = true,
  fold_markers = { '', '' },
  wrap = false,
  focus_on_open = true,
  keymaps = {
    show_help = '?',
    close = { '<Esc>', 'q' },
    goto_location = '<Cr>',
    peek_location = 'o',
    hover_symbol = '<C-space>',
    toggle_preview = 'K',
    rename_symbol = 'r',
    code_actions = 'a',
    fold = 'h',
    fold_toggle = '<tab>',
    fold_toggle_all = '<S-tab>',
    unfold = 'l',
    fold_all = 'W',
    unfold_all = 'E',
    fold_reset = 'R',
    down_and_goto = '<C-j>',
    up_and_goto = '<C-k>',
  },
  lsp_blacklist = {},
  symbol_blacklist = {},
  symbols = {
    File = { icon = '󰈔', hl = '@text.uri' },
    Module = { icon = '󰆧', hl = '@namespace' },
    Namespace = { icon = '󰅪', hl = '@namespace' },
    Package = { icon = '󰏗', hl = '@namespace' },
    Class = { icon = '𝓒', hl = '@type' },
    Method = { icon = 'ƒ', hl = '@method' },
    Property = { icon = '', hl = '@method' },
    Field = { icon = '󰆨', hl = '@field' },
    Constructor = { icon = '', hl = '@constructor' },
    Enum = { icon = 'ℰ', hl = '@type' },
    Interface = { icon = '󰜰', hl = '@type' },
    Function = { icon = '', hl = '@function' },
    Variable = { icon = '', hl = '@constant' },
    Constant = { icon = '', hl = '@constant' },
    String = { icon = '𝓐', hl = '@string' },
    Number = { icon = '#', hl = '@number' },
    Boolean = { icon = '⊨', hl = '@boolean' },
    Array = { icon = '󰅪', hl = '@constant' },
    Object = { icon = '⦿', hl = '@type' },
    Key = { icon = '🔐', hl = '@type' },
    Null = { icon = 'NULL', hl = '@type' },
    EnumMember = { icon = '', hl = '@field' },
    Struct = { icon = '𝓢', hl = '@type' },
    Event = { icon = '🗲', hl = '@type' },
    Operator = { icon = '+', hl = '@operator' },
    TypeParameter = { icon = '𝙏', hl = '@parameter' },
    Component = { icon = '󰅴', hl = '@function' },
    Fragment = { icon = '󰅴', hl = '@constant' },
    -- ccls
    TypeAlias =  { icon = ' ', hl = '@type' },
    Parameter = { icon = ' ', hl = '@parameter' },
    StaticMethod = { icon = ' ', hl = '@function' },
    Macro = { icon = ' ', hl = '@macro' },
  },
}

M.options = {}

function M.has_numbers()
  return M.options.show_numbers or M.options.show_relative_numbers
end

function M.get_position_navigation_direction()
  if M.options.position == 'left' then
    return 'h'
  else
    return 'l'
  end
end

function M.get_window_width()
  if M.options.relative_width then
    return math.ceil(vim.o.columns * (M.options.width / 100))
  else
    return M.options.width
  end
end

function M.get_split_command()
  if M.options.position == 'left' then
    return 'topleft vs'
  else
    return 'botright vs'
  end
end

local function has_value(tab, val)
  for _, value in ipairs(tab) do
    if value == val then
      return true
    end
  end

  return false
end

function M.is_symbol_blacklisted(kind)
  if kind == nil then
    return false
  end
  return has_value(M.options.symbol_blacklist, kind)
end

function M.is_client_blacklisted(client_id)
  local client = vim.lsp.get_client_by_id(client_id)
  if not client then
    return false
  end
  return has_value(M.options.lsp_blacklist, client.name)
end

function M.show_help()
  print 'Current keymaps:'
  print(vim.inspect(M.options.keymaps))
end

function M.setup(options)
  vim.g.symbols_outline_loaded = 1
  M.options = vim.tbl_deep_extend('force', {}, M.defaults, options or {})
end

return M