local function setup_keybinds()
  vim.keymap.set("n", "gd", vim.lsp.buf.definition)
  vim.keymap.set("n", "ev", function()
    vim.diagnostic.open_float()
  end)
  vim.keymap.set("i", "<C-s>", function()
    vim.lsp.buf.signature_help()
  end)
  vim.diagnostic.config({ virtual_text = true })
end

return {
  {
    "hrsh7th/nvim-cmp",
    dependencies = { "hrsh7th/cmp-cmdline",
      "hrsh7th/cmp-path",
      "hrsh7th/cmp-buffer",
      "hrsh7th/cmp-nvim-lsp",
    },
    config = function()
      local cmp = require("cmp")
      cmp.setup({
        snippet = {
          expand = function(args)
            require("luasnip").lsp_expand(args.body)
          end,
        },
        window = {
          completion = cmp.config.window.bordered(),
          documentation = cmp.config.window.bordered(),
        },
        mapping = cmp.mapping.preset.insert({
          ["<C-b>"] = cmp.mapping.scroll_docs(-4),
          ["<C-f>"] = cmp.mapping.scroll_docs(4),
          ["<C-Space>"] = cmp.mapping.complete(),
          ["<C-e>"] = cmp.mapping.abort(),
          ["<CR>"] = cmp.mapping.confirm({ select = true }),
        }),
        sources = cmp.config.sources({
          { name = "nvim_lsp" },
          { name = "luasnip" },
        }, {
          { name = "buffer" },
        }),
      })
      local capabilities = require("cmp_nvim_lsp").default_capabilities()
      setup_keybinds()
      vim.lsp.config("*", {
        capabilities = capabilities,
      })
      cmp.setup.cmdline({ "/", "?" }, {
        mapping = cmp.mapping.preset.cmdline(),
        sources = {
          { name = "buffer" },
        },
      })
      cmp.setup.cmdline(":", {
        mapping = cmp.mapping.preset.cmdline(),
        sources = cmp.config.sources({
          { name = "path" },
        }, {
          { name = "cmdline" },
        }),
        matching = { disallow_symbol_nonprefix_matching = false },
      })
    end
  }
}
