dotfiles/nvim/.config/nvim/after/plugin/lualine.lua

local colors = {
  line_bg  = '#21242b',
  bg       = '#000000',
  fg       = '#dobfa1',
  yellow   = '#fabd2f',
  cyan     = '#008080',
  darkblue = '#081633',
  green    = '#afd700',
  orange   = '#FF8800',
  purple   = '#5d4d7a',
  magenta  = '#c678dd',
  blue     = '#51afef',
  red      = '#ec5f67'
}

local conditions = {
  buffer_not_empty = function()
    return vim.fn.empty(vim.fn.expand '%:t') ~= 1
  end,
  hide_in_width = function()
    return vim.fn.winwidth(0) > 80
  end,
  check_git_workspace = function()
    local filepath = vim.fn.expand '%:p:h'
    local gitdir   = vim.fn.finddir('.git', filepath .. ';')
    return gitdir and #gitdir > 0 and #gitdir < #filepath
  end,
  check_active_lsp = function()
    local clients = vim.lsp.get_active_clients()
    return next(clients) ~= nil
  end
}

local window = {
  function()
    return vim.api.nvim_win_get_number(0)
  end,
  color = { fg = colors.red },
}

local function diffsigns_source()
  local gitsigns = vim.b.gitsigns_status_dict
  if gitsigns then
    return {
      added    = gitsigns.added,
      modified = gitsigns.changed,
      removed  = gitsigns.removed
    }
  end
end

local config = {
  options = {
    icons_enabled        = true,
    component_separators = '',
    section_separators   = '',
    theme = {
      normal   = { c = { fg = colors.fg    , bg = colors.bg } },
      inactive = { c = { fg = colors.yellow, bg = colors.bg } },
    },
  },
  sections = {
    -- these are to remove the defaults
    lualine_a = {},
    lualine_b = {},
    lualine_y = {},
    lualine_z = {},
    -- These will be filled later
    lualine_c = {},
    lualine_x = {},
  },
  inactive_sections = {
    -- these are to remove the defaults
    lualine_a = {},
    lualine_v = {},
    lualine_y = {},
    lualine_z = {},
    lualine_c = { window, 'filename' },
    lualine_x = { 'location', 'progress' },
  },
  extensions = { 'fugitive', 'fzf', 'quickfix', 'toggleterm' },
}

local function ins_left(component)
  table.insert(config.sections.lualine_c, component)
end

local function ins_right(component)
  table.insert(config.sections.lualine_x, component)
end

ins_left {
  function()
    return ' '
  end,
  color   = { fg = colors.blue },
  padding = { left = 0, right = 1 },
}

ins_left {
  function()
    local mode_color = {
      n      = colors.red,
      i      = colors.green,
      v      = colors.blue,
      [''] = colors.blue,
      V      = colors.blue,
      c      = colors.magenta,
      no     = colors.red,
      s      = colors.orange,
      S      = colors.orange,
      [''] = colors.orange,
      ic     = colors.yellow,
      R      = colors.purple,
      Rv     = colors.purple,
      cv     = colors.red,
      ce     = colors.red,
      r      = colors.cyan,
      rm     = colors.cyan,
      ['r?'] = colors.cyan,
      ['!']  = colors.red,
      t      = colors.red,
    }
    vim.api.nvim_command('hi! LualineMode guifg=' .. mode_color[vim.fn.mode()] .. ' guibg=' .. colors.bg)
    return ''
  end,
  color   = 'LualineMode',
  padding = { right = 1 },
}

ins_left {
  'filename',
  cond  = conditions.buffer_not_empty,
  color = { fg = colors.blue, gui = 'bold' },
}

ins_left {
  'FugitiveHead',
  cond  = conditions.check_git_workspace,
  icon  = ' ',
  color = { fg = colors.orange, gui = 'bold' },
}

ins_left {
  'diff',
  source     = diffsigns_source,
  cond       = conditions.check_git_workspace,
  symbols    = { added = ' ', modified = ' ', removed = ' ' },
  diff_color = {
    added    = { fg = colors.green },
    modified = { fg = colors.orange },
    removed  = { fg = colors.red },
  },
}


ins_left {
  'diagnostics',
  sources = { 'nvim_diagnostic' },
  symbols = { error = ' ', warn = ' ', info = ' ', hint = ' ' },
  diagnostics_color = {
    color_error = { fg = colors.red },
    color_warn  = { fg = colors.yellow },
    color_info  = { fg = colors.cyan },
    color_hint  = { fg = colors.orange },
  },
}

ins_left {
  function()
    return '%='
  end,
}

ins_right {
  'lsp_progress',
  cond  = conditions.check_active_lsp and conditions.hide_in_width,
  color = { fg = colors.cyan, gui = 'bold' }
}

ins_right {
  'location',
  color = { fg = colors.green, gui = 'bold' }
}

ins_right {
  'progress',
  color = { fg = colors.magenta, gui = 'bold' }
}

require'lualine'.setup(config)