local actions = require('fschauen.telescope').actions

local mappings = {
  ['<c-j>']    = actions.cycle_history_next,
  ['<c-k>']    = actions.cycle_history_prev,
  ['<s-down>'] = actions.preview_scrolling_down,
  ['<s-up>']   = actions.preview_scrolling_up,
  ['<c-y>']    = actions.cycle_layout_next,
  ['<c-o>']    = actions.toggle_mirror,
  ['<c-c>']    = actions.close,
  ['<c-q>']    = actions.smart_send_to_qflist_and_open,
  ['<c-l>']    = actions.smart_send_to_loclist_and_open,
  ['<c-b>']    = actions.smart_open_with_trouble
}

return {
  {
    'nvim-telescope/telescope.nvim',
    dependencies = {
      'nvim-telescope/telescope-fzf-native.nvim',
      build = 'cmake -S. -Bbuild -DCMAKE_BUILD_TYPE=Release ' ..
              '&& cmake --build build --config Release ' ..
              '&& cmake --install build --prefix build',
    },
    cmd = 'Telescope',
    keys = require('fschauen.keymap').telescope,
    opts  = {
      defaults = {
        mappings = {
          i = mappings,
          n = mappings,
        },

        prompt_prefix = '   ',     -- Alternatives:   ❯
        selection_caret = ' ',     -- Alternatives:   ➔  

        multi_icon = '󰄬 ',          -- Alternatives: 󰄬    
        scroll_strategy = 'limit',  -- Don't wrap around in results.

        dynamic_preview_title = true,

        layout_strategy = 'flex',
        layout_config = {
          width      = 0.9,
          height     = 0.9,
          flex       = { flip_columns   = 130 },
          horizontal = { preview_width  = 0.5, preview_cutoff = 130 },
          vertical   = { preview_height = 0.5 },
        },
        cycle_layout_list = { 'horizontal', 'vertical' },
      },
      pickers = {
        buffers = {
          mappings = {
            n = {
              x = actions.delete_buffer,
            },
          },
        },
        colorscheme = {
          theme = 'dropdown',
        },
        spell_suggest = {
          theme = 'cursor',
        },
      },
      extensions = {
        file_browser = {
          theme = 'ivy'
        },
      },
    },
    config = function(_, opts)
      require('telescope').setup(opts)
      require('telescope').load_extension 'fzf'
      vim.api.nvim_create_autocmd('User', {
        desc = 'Enable line number in Telescope previewers.',
        group = vim.api.nvim_create_augroup('fschauen.telescope', { clear = true } ),
        pattern = 'TelescopePreviewerLoaded',
        command = 'setlocal number'
      })
    end
  },
  {
    'nvim-telescope/telescope-file-browser.nvim',
    dependencies = {
      'nvim-telescope/telescope.nvim',
    },
    keys = require('fschauen.keymap').telescope_file_browser,
    config = function()
      require('telescope').load_extension 'file_browser'
    end,
  },
}