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 80
  end
end

telescope.setup {
  defaults = {
    borderchars = {
      prompt  = {' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' };
      results = {' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' };
      preview = {' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' };
    },
    preview = {
      -- add image previews via chafa
      mime_hook = function(filepath, bufnr, opts)
        local is_image = function(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) 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',
            (telescopew() - 10)..'x25',
            '--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
    },

    winblend = 0,
    -- 'horizontal', 'vertical', 'bottom_pane', or 'cursor'
    layout_strategy = 'vertical',
    sorting_strategy = 'ascending',
    layout_config = {
      vertical = {
        width = telescopew(),
        prompt_position = "top",
      }
    },
    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('ui-select')
telescope.load_extension('projects')

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