marleyvim/nvim/lua/plugins/ui/bufferline-nvim.lua

return {
  'bufferline.nvim',
  event = 'DeferredUIEnter',
  keys = {
    {
      '<LEADER>bp',
      '<CMD>BufferLineTogglePin<CR>',
      desc = 'toggle buffer pin',
    },
    {
      '<LEADER>bP',
      '<CMD>BufferLineGroupClose ungrouped<CR>',
      desc = 'delete non-pinned buffers',
    },
    {
      '<LEADER>br',
      '<CMD>BufferLineCloseRight<CR>',
      desc = 'delete buffers to the right',
    },
    {
      '<LEADER>bl',
      '<CMD>BufferLineCloseLeft<CR>',
      desc = 'delete buffers to the left',
    },
    { '<S-H>', '<CMD>BufferLineCyclePrev<CR>', desc = 'previous buffer' },
    { '<S-L>', '<CMD>BufferLineCycleNext<CR>', desc = 'next buffer' },
    { '[b', '<CMD>BufferLineCyclePrev<CR>', desc = 'previous buffer' },
    { ']b', '<CMD>BufferLineCycleNext<CR>', desc = 'next buffer' },
    { '[B', '<CMD>BufferLineMovePrev<CR>', desc = 'move buffer left' },
    { ']B', '<CMD>BufferLineMoveNext<CR>', desc = 'move buffer right' },
  },
  before = function()
    require('lz.n').trigger_load({ 'mini.icons', 'which-key.nvim' })

    if vim.g.colors_name == 'rose-pine' then
      require('lz.n').trigger_load('rose-pine')
    end
  end,
  after = function()
    local opts = {
      options = {
        always_show_bufferline = true,

        close_command = function(n)
          Snacks.bufdelete(n)
        end,
        right_mouse_command = function(n)
          Snacks.bufdelete(n)
        end,

        diagnostics = 'nvim_lsp',
        diagnostics_indicator = function(_, _, diag)
          local icons = require('icons').diagnostics
          local ret = (diag.error and icons.Error .. diag.error .. ' ' or '')
            .. (diag.warning and icons.Warn .. diag.warning or '')

          return vim.trim(ret)
        end,

        offsets = {
          {
            filetype = 'neo-tree',
            text = 'Explorer',
            highlight = 'Directory',
            text_align = 'center',
          },
        },

        get_element_icon = function(elem)
          local icon, hl, _ =
            require('mini.icons').get('filetype', elem.filetype)

          return icon, hl
        end,
      },
    }

    if vim.g.colors_name == 'rose-pine' then
      opts.highlights = require('rose-pine.plugins.bufferline')
    end

    require('bufferline').setup(opts)

    vim.api.nvim_create_autocmd({ 'BufAdd', 'BufDelete' }, {
      desc = 'Fix bufferline when restoring a session',
      callback = function()
        vim.schedule(function()
          pcall(nvim_bufferline)
        end)
      end,
    })

    local colors = require('colors')
    local mkKey = MarleyVim.wkSpec(colors.buffers)

    require('which-key').add({
      mkKey('<LEADER>bp', nil, ''),
      mkKey('<LEADER>bP', nil, '󰐄'),
      mkKey('<LEADER>br', nil, ''),
      mkKey('<LEADER>bl', nil, ''),
      mkKey('<S-H>', nil, ''),
      mkKey('<S-L>', nil, ''),
      mkKey('[b', nil, ''),
      mkKey(']b', nil, ''),
      mkKey('[B', nil, ''),
      mkKey(']B', nil, ''),
    })
  end,
}