nvim-config/lua/telescope-setup.lua

-- [[ Configure Telescope ]]
-- See `:help telescope` and `:help telescope.setup()`
require('telescope').setup {
  defaults = {
    mappings = {
      i = { ['<c-enter>'] = 'to_fuzzy_refine' },
    },
  },
  extensions = {
    ['ui-select'] = {
      require('telescope.themes').get_dropdown(),
    },
  },
}

-- Enable telescope extensions, if they are installed
pcall(require('telescope').load_extension, 'fzf')
pcall(require('telescope').load_extension, 'ui-select')

-- See `:help telescope.builtin`
local builtin = require 'telescope.builtin'

-- Telescope live_grep in git root
-- Function to find the git root directory based on the current buffer's path
local function find_git_root()
  -- Use the current buffer's path as the starting point for the git search
  local current_file = vim.api.nvim_buf_get_name(0)
  local current_dir
  local cwd = vim.fn.getcwd()
  -- If the buffer is not associated with a file, return nil
  if current_file == '' then
    current_dir = cwd
  else
    -- Extract the directory from the current file's path
    current_dir = vim.fn.fnamemodify(current_file, ':h')
  end

  -- Find the Git root directory from the current file's path
  local git_root = vim.fn.systemlist('git -C ' .. vim.fn.escape(current_dir, ' ') .. ' rev-parse --show-toplevel')[1]
  if vim.v.shell_error ~= 0 then
    print 'Not a git repository. Searching on current working directory'
    return cwd
  end
  return git_root
end

-- Custom live_grep function to search in git root
local function live_grep_git_root()
  local git_root = find_git_root()
  if git_root then
    builtin.live_grep {
      search_dirs = { git_root },
    }
  end
end

vim.api.nvim_create_user_command('LiveGrepGitRoot', live_grep_git_root, {})

-- See `:help telescope.builtin`
vim.keymap.set('n', '<leader>?', builtin.oldfiles, { desc = '[?] Find recently opened files' })
vim.keymap.set('n', '<leader><space>', builtin.buffers, { desc = '[ ] Find existing buffers' })
vim.keymap.set('n', '<leader>/', function()
  -- You can pass additional configuration to telescope to change theme, layout, etc.
  builtin.current_buffer_fuzzy_find(require('telescope.themes').get_dropdown {
    winblend = 10,
    previewer = false,
  })
end, { desc = '[/] Fuzzily search in current buffer' })

local function telescope_live_grep_open_files()
  builtin.live_grep {
    grep_open_files = true,
    prompt_title = 'Live Grep in Open Files',
  }
end
vim.keymap.set('n', '<leader>s/', telescope_live_grep_open_files, { desc = '[S]earch [/] in Open Files' })
vim.keymap.set('n', '<leader>ss', builtin.builtin, { desc = '[S]earch [S]elect Telescope' })
vim.keymap.set('n', '<leader>gf', builtin.git_files, { desc = 'Search [G]it [F]iles' })
vim.keymap.set('n', '<leader>sf', builtin.find_files, { desc = '[S]earch [F]iles' })
vim.keymap.set('n', '<leader>sh', builtin.help_tags, { desc = '[S]earch [H]elp' })
vim.keymap.set('n', '<leader>sk', builtin.keymaps, { desc = '[S]earch [K]eymaps' })
vim.keymap.set('n', '<leader>sw', builtin.grep_string, { desc = '[S]earch current [W]ord' })
vim.keymap.set('n', '<leader>sg', builtin.live_grep, { desc = '[S]earch by [G]rep' })
vim.keymap.set('n', '<leader>s.', builtin.oldfiles, { desc = '[S]earch Recent Files ("." for repeat)' })
vim.keymap.set('n', '<leader>sG', ':LiveGrepGitRoot<cr>', { desc = '[S]earch by [G]rep on Git Root' })
vim.keymap.set('n', '<leader>sd', builtin.diagnostics, { desc = '[S]earch [D]iagnostics' })
vim.keymap.set('n', '<leader>sr', builtin.resume, { desc = '[S]earch [R]esume' })
-- Shortcut for searching your neovim configuration files
vim.keymap.set('n', '<leader>sn', function()
  builtin.find_files { cwd = vim.fn.stdpath 'config' }
end, { desc = '[S]earch [N]eovim files' })

-- vim: ts=2 sts=2 sw=2 et