local toggle_inlay_hints = function()
  vim.lsp.inlay_hint.enable(not vim.lsp.inlay_hint.is_enabled())
end

local map_local = function(mode, lhs, rhs, opts)
  opts = vim.tbl_deep_extend("force", opts or {}, { buffer = 0 })
  vim.keymap.set(mode, lhs, rhs, opts)
end

local lsp_on_attach = function(args)
  -- stylua: ignore start
  map_local("n", "<leader>sh",     toggle_inlay_hints)
  map_local("n", "<localleader>c", vim.lsp.buf.code_action)
  map_local("n", "<localleader>f", vim.lsp.buf.format)
  map_local("n", "gd",             vim.lsp.buf.definition)
  map_local("n", "gD",             vim.lsp.buf.declaration)
  map_local("n", "gi",             vim.lsp.buf.implementation)
  map_local("n", "grr",            vim.lsp.buf.rename)
  map_local("n", "gt",             vim.lsp.buf.type_definition)
  map_local("n", "gs",             vim.lsp.buf.signature_help)
  map_local("i", "<c-s>",          vim.lsp.buf.signature_help)
  map_local("n", "K",              vim.lsp.buf.hover)
  -- stylua: ignore end

  -- Opt out of semantic highlighting because it has been causing issues
  --   https://github.com/neovim/nvim-lspconfig/issues/2542#issuecomment-1547019213
  local client = vim.lsp.get_client_by_id(args.data.client_id)
  if client and client.server_capabilities then
    client.server_capabilities.semanticTokensProvider = nil
  end
end

local make_lsp_builtins_use_rounded_border = function()
  local patch = function(name)
    local builtin = vim.lsp.buf[name]
    vim.lsp.buf[name] = function(opts)
      builtin(vim.tbl_deep_extend("force", opts or {}, { border = "rounded" }))
    end
  end

  patch("signature_help")
  patch("hover")
end

return {
  "neovim/nvim-lspconfig",

  dependencies = {
    "Hoffs/omnisharp-extended-lsp.nvim",
  },

  event = { "BufReadPre", "BufNewFile" },

  config = function()
    make_lsp_builtins_use_rounded_border()

    local capabilities = (function()
      local cmp_nvim_lsp = vim.F.npcall(require, "cmp_nvim_lsp")
      if cmp_nvim_lsp then
        return cmp_nvim_lsp.default_capabilities()
      else
        return vim.lsp.protocol.make_client_capabilities()
      end
    end)()

    vim.lsp.config("*", { capabilities = capabilities })

    vim.lsp.enable("clangd")
    vim.lsp.enable("cmake")
    vim.lsp.enable("lua_ls")
    vim.lsp.enable("omnisharp")
    vim.lsp.enable("pyright")

    vim.api.nvim_create_autocmd("LspAttach", { callback = lsp_on_attach })
  end,
}