local status_ok, telescope = pcall(require, "telescope")
if not status_ok then
	return
end
local actions = require('telescope.actions')
local action_layout = require("telescope.actions.layout")

local function telescopew()
  if vim.o.columns <= 80 then
    return vim.o.columns
  else
    return 0.8
  end
end

telescope.setup {
  defaults = {
    borderchars = {
      prompt  = {' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' },
      results = {' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' },
      preview = {' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' },
    },
    winblend = 0,
    layout_strategy = 'horizontal',
    sorting_strategy = 'descending',
    scroll_strategy = 'limit',
    layout_config = {
      horizontal = {
        width = telescopew(),
        height = 20,
        prompt_position = 'bottom',
        anchor = 'N',
      }
    },
    preview = {
      -- add image previews via chafa
      mime_hook = function(filepath, bufnr, opts)
        local function is_image(filepath)
          local image_extensions = { -- supported image formats
            'png',
            'jpg',
            'jpe',
            'jpeg',
            'webp',
            'gif'
          }
          local split_path = vim.split(filepath:lower(), '.', { plain=true })
          local extension = split_path[#split_path]
          return vim.tbl_contains(image_extensions, extension)
        end
        if is_image(filepath) and vim.fn.executable('chafa') == 1 then
          local term = vim.api.nvim_open_term(bufnr, {})
          local function send_output(_, data, _)
            for _, d in ipairs(data) do
              vim.api.nvim_chan_send(term, d..'\r\n')
            end
          end
          vim.fn.jobstart({
            'chafa', '-C', 'on', '--animate', 'off', '-s',
            '23x18', '--clear', filepath
          }, { on_stdout = send_output, stdout_buffered = true, pty = true })
          a.nvim_set_option_value("number", false, { buf = bufnr })
        else
          require("telescope.previewers.utils").set_preview_message(bufnr,
            opts.winid, "File cannot be previewed")
        end
      end
    },
    mappings = {
      i = {
        ["<esc>"] = actions.close,
        ['<C-h>'] = 'which_key',
        ['<C-j>'] = actions.move_selection_next,
        ['<C-k>'] = actions.move_selection_previous,
        ['<C-l>'] = actions.select_default,
        ['<C-u>'] = actions.preview_scrolling_up,
        ['<C-d>'] = actions.preview_scrolling_down,
        ["<C-p>"] = action_layout.toggle_preview
      },
      n = {
        ["gg"] = actions.move_to_top,
        ["G"] = actions.move_to_bottom,
      },
    },
  }
}
telescope.load_extension('file_browser')
telescope.load_extension('projects')
telescope.load_extension('fzf')
telescope.load_extension('harpoon')

a.nvim_create_autocmd('User', {
  pattern = 'TelescopePreviewerLoaded',
  callback = function()
    vim.opt.winblend = 0
  end,
})