copilot_handler.lua

local user_data = require('copilot.setup').get_cred()
local util = require('copilot.util')

local function completion_handler(_, result, c, _)
   print(vim.inspect(result.completions))
end

local get_completions = function()
   local params = util.get_completion_params()
   completions = vim.lsp.buf_request(0, 'getCompletions', params, completion_handler)
end
local send_editor_info = function (a, b, c, d)
   local responses = vim.lsp.buf_request_sync(0, 'setEditorInfo', {
      editorPluginInfo = {
         name = 'copilot.vim',
         version = '1.1.0',
      },
      editorInfo= {
         version = '0.7.0-dev+1343-g4d3acd6be-dirty',
         name = "Neovim",
      },
   }, 600)
   print(vim.inspect(responses))
end

local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities.getCompletions = true

vim.lsp.start_client({
   cmd = {require('copilot.util').get_copilot_path()},
   cmd_env = {
      ["GITHUB_USER"] = user_data.user,
      ["GITHUB_TOKEN"] = user_data.token,
      ["COPILOT_AGENT_VERBOSE"] = 1,
   },
   handlers={
      ["getCompletions"] = function () print("get completions") end,
      ["textDocumentSync"] = function () print("handle") end,
   },
   name = "copilot",
   trace = "messages",
   root_dir = vim.loop.cwd(),
   autostart = true,
   on_init = function(client, _)
      vim.lsp.buf_attach_client(0, client.id)
      vim.api.nvim_create_autocmd({'BufEnter'}, {
         callback = function ()
            if not vim.lsp.buf_get_clients(0)[client.id] then vim.lsp.buf_attach_client(0, client.id) end
         end,
         once = false,
      })
   end,
   on_attach = function()
      send_editor_info()
      vim.keymap.set('n', '<leader>i', get_completions, {noremap = true, silent = true})
      vim.api.nvim_create_autocmd({'TextChangedI'}, {
         callback = get_completions,
         once = false,
      })
   end
})