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path: root/neovim/.config/nvim/lua/config/lualine.lua
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-- Eviline config for lualine
-- Author: shadmansaleh
-- Credit: glepnir
local lualine = require('lualine')

-- Color table for highlights
--stylua: ignore
local colors = {
  bg       = 'StatusLine',
  fg       = 'StatusLine',
  yellow = vim.g.terminal_color_11,
  cyan = vim.g.terminal_color_14,
  darkblue = vim.g.terminal_color_4,
  green = vim.g.terminal_color_10,
  orange = vim.g.terminal_color_3,
  violet = vim.g.terminal_color_5,
  magenta = vim.g.terminal_color_13,
  blue = vim.g.terminal_color_12,
  red = vim.g.terminal_color_9,
}

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,
}

-- Config
local config = {
  options = {
    -- Disable sections and component separators
    component_separators = '',
    section_separators = '',
    theme = {
      -- We are going to use lualine_c an lualine_x as left and
      -- right section. Both are highlighted by c theme .  So we
      -- are just setting default looks o statusline
      normal = { c = { fg = colors.fg, bg = colors.bg } },
      inactive = { c = { fg = colors.fg, 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_b = {},
    lualine_y = {},
    lualine_z = {},
    lualine_c = {},
    lualine_x = {},
  },
}

-- Inserts a component in lualine_c at left section
local function ins_left(component)
  table.insert(config.sections.lualine_c, component)
end

-- Inserts a component in lualine_x at right section
local function ins_right(component)
  table.insert(config.sections.lualine_x, component)
end

ins_left {
  function()
    return '▊'
  end,
  color = { fg = colors.blue }, -- Sets highlighting of component
  padding = { left = 0, right = 1 }, -- We don't need space before this
}

ins_left {
  -- mode component
  function()
    return ''
  end,
  color = function()
    -- auto change color according to neovims mode
    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.violet,
      Rv = colors.violet,
      cv = colors.red,
      ce = colors.red,
      r = colors.cyan,
      rm = colors.cyan,
      ['r?'] = colors.cyan,
      ['!'] = colors.red,
      t = colors.red,
    }
    return { fg = mode_color[vim.fn.mode()] }
  end,
  padding = { right = 1 },
}

ins_left {
  -- filesize component
  'filesize',
  cond = conditions.buffer_not_empty,
}

ins_left {
  'filetype',
  cond = conditions.buffer_not_empty,
  icon_only = true,
}

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

ins_left { 'location' }

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

ins_left {
  'diagnostics',
  sources = { 'nvim_diagnostic' },
  symbols = { error = ' ', warn = ' ', info = ' ' },
  diagnostics_color = {
    error = { fg = colors.red },
    warn = { fg = colors.yellow },
    info = { fg = colors.cyan },
  },
}

-- Insert mid section. You can make any number of sections in neovim :)
-- for lualine it's any number greater then 2
ins_left {
  function()
    return '%='
  end,
}

ins_left {
  -- Lsp server name .
  function()
    local msg = 'No Active Lsp'
    local buf_ft = vim.api.nvim_buf_get_option(0, 'filetype')
    local clients = vim.lsp.get_active_clients()
    if next(clients) == nil then
      return msg
    end
    for _, client in ipairs(clients) do
      local filetypes = client.config.filetypes
      if filetypes and vim.fn.index(filetypes, buf_ft) ~= -1 then
        return client.name
      end
    end
    return msg
  end,
  cond = function()
    local tbl = { ['dashboard'] = true, [''] = true }
    if tbl[vim.bo.filetype] then
      return false
    elseif next(vim.lsp.get_active_clients()) == nil then
      return false
    end
    return true
  end,
  icon = '⚙ LSP:',
  color = { fg = colors.fg, gui = 'bold' },
}

ins_right {
  'branch',
  icon = '',
  color = { fg = colors.violet, gui = 'bold' },
}

ins_right {
  'diff',
  -- Is it me or the symbol for modified us really weird
  symbols = { added = ' ', modified = '󰝤 ', removed = ' ' },
  diff_color = {
    added = { fg = colors.green },
    modified = { fg = colors.orange },
    removed = { fg = colors.red },
  },
  cond = conditions.hide_in_width,
}

ins_right {
  function()
    return '▊'
  end,
  color = { fg = colors.blue },
  padding = { left = 1 },
}

-- Now don't forget to initialize lualine
lualine.setup(config)