local M = {}

-- local Log = require "lvim.core.log"

M.config = function()
  lvim.builtin.breadcrumbs = {
    active = false,
    on_config_done = nil,
    options = {
      icons = {
        Text = " ",
        Method = " ",
        Function = " ",
        Constructor = " ",
        Field = " ",
        Variable = " ",
        Class = " ",
        Interface = " ",
        Module = " ",
        Property = " ",
        Unit = " ",
        Value = " ",
        Enum = " ",
        Keyword = " ",
        Snippet = " ",
        Color = " ",
        File = " ",
        Reference = " ",
        Folder = " ",
        EnumMember = " ",
        Constant = " ",
        Struct = " ",
        Event = " ",
        Operator = " ",
        TypeParameter = " ",
        Array = " ",
        Number = " ",
        String = " ",
        Boolean = "蘒",
        Object = " ",
        Package = " ",
        Namespace = "",
        Key = "",
        Null = "ﳠ",
      },
      highlight = true,
      separator = " " .. ">" .. " ",
      depth_limit = 0,
      depth_limit_indicator = "..",
    },
  }
end

M.setup = function()
  local status_ok, navic = pcall(require, "nvim-navic")
  if not status_ok then
    return
  end

  M.create_winbar()
  navic.setup(lvim.builtin.breadcrumbs.options)

  if lvim.builtin.breadcrumbs.on_config_done then
    lvim.builtin.breadcrumbs.on_config_done()
  end
end

M.winbar_filetype_exclude = {
  "help",
  "startify",
  "dashboard",
  "packer",
  "neo-tree",
  "neogitstatus",
  "NvimTree",
  "Trouble",
  "alpha",
  "lir",
  "Outline",
  "spectre_panel",
  "toggleterm",
  "DressingSelect",
  "Jaq",
  "harpoon",
  "dapui_scopes",
  "dapui_breakpoints",
  "dapui_stacks",
  "dapui_watches",
  "dap-repl",
  "dap-terminal",
  "dapui_console",
  "lab",
  "Markdown",
  "",
}

M.get_filename = function()
  local filename = vim.fn.expand "%:t"
  local extension = vim.fn.expand "%:e"
  local f = require "lvim.utils.functions"

  if not f.isempty(filename) then
    local file_icon, file_icon_color =
      require("nvim-web-devicons").get_icon_color(filename, extension, { default = true })

    local hl_group = "FileIconColor" .. extension

    vim.api.nvim_set_hl(0, hl_group, { fg = file_icon_color })
    if f.isempty(file_icon) then
      file_icon = ""
    end

    local navic_text = vim.api.nvim_get_hl_by_name("Normal", true)
    vim.api.nvim_set_hl(0, "Winbar", { fg = navic_text.foreground })

    return " " .. "%#" .. hl_group .. "#" .. file_icon .. "%*" .. " " .. "%#Winbar#" .. filename .. "%*"
  end
end

local get_gps = function()
  local status_gps_ok, gps = pcall(require, "nvim-navic")
  if not status_gps_ok then
    return ""
  end

  local status_ok, gps_location = pcall(gps.get_location, {})
  if not status_ok then
    return ""
  end

  if not gps.is_available() or gps_location == "error" then
    return ""
  end

  if not require("lvim.utils.functions").isempty(gps_location) then
    -- TODO: replace with chevron
    return ">" .. " " .. gps_location
  else
    return ""
  end
end

local excludes = function()
  if vim.tbl_contains(M.winbar_filetype_exclude, vim.bo.filetype) then
    return true
  end
  return false
end

M.get_winbar = function()
  if excludes() then
    return
  end
  local f = require "lvim.utils.functions"
  local value = M.get_filename()

  local gps_added = false
  if not f.isempty(value) then
    local gps_value = get_gps()
    value = value .. " " .. gps_value
    if not f.isempty(gps_value) then
      gps_added = true
    end
  end

  if not f.isempty(value) and f.get_buf_option "mod" then
    -- TODO: replace with circle
    local mod = "%#LspCodeLens#" .. "" .. "%*"
    if gps_added then
      value = value .. " " .. mod
    else
      value = value .. mod
    end
  end

  local num_tabs = #vim.api.nvim_list_tabpages()

  if num_tabs > 1 and not f.isempty(value) then
    local tabpage_number = tostring(vim.api.nvim_tabpage_get_number(0))
    value = value .. "%=" .. tabpage_number .. "/" .. tostring(num_tabs)
  end

  local status_ok, _ = pcall(vim.api.nvim_set_option_value, "winbar", value, { scope = "local" })
  if not status_ok then
    return
  end
end

M.create_winbar = function()
  vim.api.nvim_create_augroup("_winbar", {})
  if vim.fn.has "nvim-0.8" == 1 then
    vim.api.nvim_create_autocmd(
      { "CursorMoved", "CursorHold", "BufWinEnter", "BufFilePost", "InsertEnter", "BufWritePost", "TabClosed" },
      {
        group = "_winbar",
        callback = function()
          local status_ok, _ = pcall(vim.api.nvim_buf_get_var, 0, "lsp_floating_window")
          if not status_ok then
            -- TODO:
            require("lvim.core.breadcrumbs").get_winbar()
          end
        end,
      }
    )
  end
end

return M