nvim/lua/plugins/cmp.lua

return {
  {
    'hrsh7th/nvim-cmp',
    lazy = false,
    priority = 100,
    dependencies = {
      'hrsh7th/cmp-nvim-lsp',
      'hrsh7th/cmp-path',
      'hrsh7th/cmp-buffer',
      { 'L3MON4D3/LuaSnip', build = 'make install_jsregexp' },
      'saadparwaiz1/cmp_luasnip',
      'rafamadriz/friendly-snippets',
      'zbirenbaum/copilot-cmp',
      'onsails/lspkind.nvim',
    },
    config = function()
      vim.opt.completeopt = { 'menu', 'menuone', 'noselect' }
      vim.opt.shortmess:append 'c'

      local cmp = require 'cmp'
      local lspkind = require 'lspkind'

      cmp.setup {
        sources = {
          { name = 'copilot' },
          { name = 'luasnip' },
          { name = 'nvim_lsp' },
          { name = 'path' },
          { name = 'buffer' },
        },
        mapping = {
          ['<C-n>'] = cmp.mapping.select_next_item { behavior = cmp.SelectBehavior.Insert },
          ['<C-p>'] = cmp.mapping.select_prev_item { behavior = cmp.SelectBehavior.Insert },
          ['<C-y>'] = cmp.mapping(
            cmp.mapping.confirm {
              behavior = cmp.ConfirmBehavior.Insert,
              select = true,
            },
            { 'i', 'c' }
          ),
        },

        -- Enable luasnip to handle snippet expansion for nvim-cmp
        snippet = {
          expand = function(args)
            require('luasnip').lsp_expand(args.body)
          end,
        },

        formatting = {
          expandable_indicator = true,
          fields = { 'abbr', 'kind' },
          format = lspkind.cmp_format {
            mode = 'symbol_text', -- show only symbol annotations
            maxwidth = 50, -- prevent the popup from showing more than provided characters (e.g 50 will not show more than 50 characters)
            ellipsis_char = '...', -- when popup menu exceed maxwidth, the truncated part would show ellipsis_char instead (must define maxwidth first)
            show_labelDetails = true, -- show labelDetails in menu. Disabled by default

            -- The function below will be called before any actual modifications from lspkind
            -- so that you can provide more controls on popup customization. (See [#30](https://github.com/onsails/lspkind-nvim/pull/30))
            -- before = function(entry, vim_item)
            --   return vim_item
            -- end,
          },
        },
      }

      -- Setup up vim-dadbod
      cmp.setup.filetype({ 'sql' }, {
        sources = {
          { name = 'vim-dadbod-completion' },
          { name = 'buffer' },
        },
      })

      local ls = require 'luasnip'
      ls.config.set_config {
        history = false,
        updateevents = 'TextChanged,TextChangedI',
      }

      for _, ft_path in ipairs(vim.api.nvim_get_runtime_file('lua/custom/snippets/*.lua', true)) do
        loadfile(ft_path)()
      end

      vim.keymap.set({ 'i', 's' }, '<c-k>', function()
        if ls.expand_or_jumpable() then
          ls.expand_or_jump()
        end
      end, { silent = true })

      vim.keymap.set({ 'i', 's' }, '<c-j>', function()
        if ls.jumpable(-1) then
          ls.jump(-1)
        end
      end, { silent = true })

      require('luasnip/loaders/from_vscode').lazy_load()
    end,
  },
}