local present, lspconfig = pcall(require, "lspconfig")

if not present then
  return
end

require("base46").load_highlight "lsp"
require "nvchad_ui.lsp"

local M = {}
local utils = require "core.utils"

M.on_attach = function(client, bufnr)
  local vim_version = vim.version()

  if vim_version.minor > 7 then
    -- nightly
    client.server_capabilities.documentFormattingProvider = false
    client.server_capabilities.documentRangeFormattingProvider = false
  else
    -- stable
    client.resolved_capabilities.document_formatting = false
    client.resolved_capabilities.document_range_formatting = false
  end

  local lsp_mappings = utils.load_config().mappings.lspconfig
  utils.load_mappings({ lsp_mappings }, { buffer = bufnr })

  if client.server_capabilities.signatureHelpProvider then
    require("nvchad_ui.signature").setup(client)
  end
end

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

capabilities.textDocument.completion.completionItem = {
  documentationFormat = { "markdown", "plaintext" },
  snippetSupport = true,
  preselectSupport = true,
  insertReplaceSupport = true,
  labelDetailsSupport = true,
  deprecatedSupport = true,
  commitCharactersSupport = true,
  tagSupport = { valueSet = { 1 } },
  resolveSupport = {
    properties = {
      "documentation",
      "detail",
      "additionalTextEdits",
    },
  },
}

lspconfig.sumneko_lua.setup {
  on_attach = M.on_attach,
  capabilities = capabilities,

  settings = {
    Lua = {
      diagnostics = {
        globals = { "vim" },
      },
      workspace = {
        library = {
          [vim.fn.expand "$VIMRUNTIME/lua"] = true,
          [vim.fn.expand "$VIMRUNTIME/lua/vim/lsp"] = true,
        },
        maxPreload = 100000,
        preloadFileSize = 10000,
      },
    },
  },
}

-- requires a file containing user's lspconfigs
local addlsp_confs = utils.load_config().plugins.options.lspconfig.setup_lspconf

if #addlsp_confs ~= 0 then
  require(addlsp_confs).setup_lsp(M.on_attach, capabilities)
end

return M