local util = require("copilot.util")
local M = { params = {} }

M.buf_attach_copilot = function()
  if vim.tbl_contains(M.params.ft_disable, vim.bo.filetype) then return end
  if not vim.bo.buflisted or not vim.bo.buftype == "" then return end
  local client_id = require("copilot.util").find_copilot_client()
  local buf_clients = vim.lsp.buf_get_clients(0)
  if client_id and buf_clients and not buf_clients[client_id] then
    vim.lsp.buf_attach_client(0, client_id)
  end
end

M.merge_server_opts = function (params)
  return vim.tbl_deep_extend("force", params.server_opts_overrides, {
    cmd = { require("copilot.util").get_copilot_path(params.plugin_manager_path) },
    name = "copilot",
    trace = "messages",
    root_dir = vim.loop.cwd(),
    autostart = true,
    on_init = function(_, _)
      M.buf_attach_copilot()
      if vim.fn.has("nvim-0.7") > 0 then
        vim.api.nvim_create_autocmd({ "BufEnter" }, {
          callback = vim.schedule(function() M.buf_attach_copilot() end),
          once = false,
        })
      else
        vim.cmd("au BufEnter * lua vim.schedule(function() require('copilot.copilot_handler').buf_attach_copilot() end)")
      end
    end,
    on_attach = function()
      vim.schedule_wrap(params.on_attach())
    end,
  })
end

M.start = function(params)
  M.params = params
  vim.lsp.start_client(M.merge_server_opts(params))
end

return M