-- https://github.com/nvim-telescope/telescope.nvim/wiki/Configuration-Recipes#dont-preview-binaries
local previewers = require('telescope.previewers')
local Job = require('plenary.job')
local preview_except_binaries = function(filepath, bufnr, opts)
  filepath = vim.fn.expand(filepath, _, _)
  Job:new({
    command = 'file',
    args = { '--mime-type', '-b', filepath },
    on_exit = function(j)
      local mime_type = vim.split(j:result()[1], '/')[1]
      local file_type = vim.split(j:result()[1], '/')[2]
      if mime_type == 'text' or file_type == 'json' then
        previewers.buffer_previewer_maker(filepath, bufnr, opts)
      else
        -- maybe we want to write something to the buffer here
        vim.schedule(function()
          vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, { 'BINARY' })
        end)
      end
    end,
  }):sync()
end

-- not good...
-- https://github.com/nvim-telescope/telescope.nvim/issues/1048#issuecomment-993956937
local actions = require('telescope.actions')
local action_state = require('telescope.actions.state')
local telescope_custom_actions = {}
function telescope_custom_actions._multiopen(prompt_bufnr, open_cmd)
  local picker = action_state.get_current_picker(prompt_bufnr)
  if #picker:get_multi_selection() == 0 then
    actions.add_selection(prompt_bufnr)
  end

  local selections = picker:get_multi_selection()

  vim.g.selections = ''
  for _, entry in ipairs(selections) do
    vim.cmd(string.format(':badd %s', entry.value))
    vim.g.selections = vim.g.selections .. ', ' .. entry.value
  end
  vim.cmd(string.format(':%s! %s', open_cmd, selections[#selections].value))
  vim.cmd('stopinsert')
end
function telescope_custom_actions.multi_selection_open_vsplit(prompt_bufnr)
  telescope_custom_actions._multiopen(prompt_bufnr, 'vsplit')
end
function telescope_custom_actions.multi_selection_open_split(prompt_bufnr)
  telescope_custom_actions._multiopen(prompt_bufnr, 'split')
end
function telescope_custom_actions.multi_selection_open_tab(prompt_bufnr)
  telescope_custom_actions._multiopen(prompt_bufnr, 'tabe')
end
function telescope_custom_actions.multi_selection_open(prompt_bufnr)
  telescope_custom_actions._multiopen(prompt_bufnr, 'edit')
end

local map_multiopen = {
  ['<CR>'] = telescope_custom_actions.multi_selection_open,
  ['<C-v>'] = telescope_custom_actions.multi_selection_open_vsplit,
  ['<C-s>'] = telescope_custom_actions.multi_selection_open_split,
  ['<C-t>'] = telescope_custom_actions.multi_selection_open_tab,
}

local action_layout = require('telescope.actions.layout')
require('telescope').setup({
  defaults = {
    generic_sorter = require('mini.fuzzy').get_telescope_sorter,
    buffer_previewer_maker = preview_except_binaries,
    mappings = {
      i = {
        ['<C-j>'] = actions.move_selection_next,
        ['<C-k>'] = actions.move_selection_previous,
        ['<esc>'] = actions.close,
        ['<C-x>'] = action_layout.toggle_preview,
        ['<C-/>'] = actions.which_key,
        ['<C-q>'] = actions.send_selected_to_qflist + actions.open_qflist,
      },
    },

    layout_strategy = 'vertical',
    layout_config = { height = 0.95 },

    vimgrep_arguments = {
      'rg',
      '--color=never',
      '--no-heading',
      '--with-filename',
      '--line-number',
      '--column',
      '--smart-case',
      '--hidden',
      '--trim',
    },
  },
  pickers = {
    find_files = {
      find_command = { 'find_for_vim' },
      mappings = { i = map_multiopen },
    },
    oldfiles = {
      mappings = { i = map_multiopen },
    },
    live_grep = {
      mappings = {
        i = {
          ['<CR>'] = actions.add_selection + actions.send_selected_to_qflist + actions.open_qflist,
        },
      },
    },
    grep_string = {
      mappings = {
        i = {
          ['<CR>'] = actions.add_selection + actions.send_selected_to_qflist + actions.open_qflist,
        },
      },
    },
  },
})