Dotfiles/.config/nvim/lua/lsp.lua

-- textDocument/diagnostic support until 0.10.0 is released
_timers = {}
local function setup_diagnostics(client, buffer)
  if require("vim.lsp.diagnostic")._enable then
    return
  end

  local diagnostic_handler = function()
    local params = vim.lsp.util.make_text_document_params(buffer)
    client.request("textDocument/diagnostic", { textDocument = params }, function(err, result)
      if err then
        local err_msg = string.format("diagnostics error - %s", vim.inspect(err))
        vim.lsp.log.error(err_msg)
      end
      local diagnostic_items = {}
      if result then
        diagnostic_items = result.items
      end
      vim.lsp.diagnostic.on_publish_diagnostics(
        nil,
        vim.tbl_extend("keep", params, { diagnostics = diagnostic_items }),
        { client_id = client.id }
      )
    end)
  end

  diagnostic_handler() -- to request diagnostics on buffer when first attaching

  vim.api.nvim_buf_attach(buffer, false, {
    on_lines = function()
      if _timers[buffer] then
        vim.fn.timer_stop(_timers[buffer])
      end
      _timers[buffer] = vim.fn.timer_start(200, diagnostic_handler)
    end,
    on_detach = function()
      if _timers[buffer] then
        vim.fn.timer_stop(_timers[buffer])
      end
    end,
  })
end

-- adds ShowRubyDeps command to show dependencies in the quickfix list.
-- add the `all` argument to show indirect dependencies as well
local function add_ruby_deps_command(client, bufnr)
    vim.api.nvim_buf_create_user_command(bufnr, "ShowRubyDeps",
                                          function(opts)

        local params = vim.lsp.util.make_text_document_params()

        local showAll = opts.args == "all"

        client.request("rubyLsp/workspace/dependencies", params,
                        function(error, result)
            if error then
                print("Error showing deps: " .. error)
                return
            end

            local qf_list = {}
            for _, item in ipairs(result) do
                if showAll or item.dependency then
                    table.insert(qf_list, {
                        text = string.format("%s (%s) - %s",
                                              item.name,
                                              item.version,
                                              item.dependency),

                        filename = item.path
                    })
                end
            end

            vim.fn.setqflist(qf_list)
            vim.cmd('copen')
        end, bufnr)
    end, {nargs = "?", complete = function()
        return {"all"}
    end})
end



--Enable (broadcasting) snippet capability for completion
local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities.textDocument.completion.completionItem.snippetSupport = true

-- LSP servers
-- Stimulus
require'lspconfig'.stimulus_ls.setup{}
-- Ruby
require("lspconfig").ruby_ls.setup({
  on_attach = function(client, buffer)
    setup_diagnostics(client, buffer)
    add_ruby_deps_command(client, buffer)
  end,
})
-- CSS
require'lspconfig'.cssls.setup {
  capabilities = capabilities,
}
-- SQL
require'lspconfig'.sqlls.setup{}
-- JavaScript
require'lspconfig'.eslint.setup{}
-- HTML
require'lspconfig'.html.setup {
  capabilities = capabilities,
}
-- JSON
require'lspconfig'.jsonls.setup {
  capabilities = capabilities,
}
-- BASH
require'lspconfig'.bashls.setup{}
-- Cucumber
require'lspconfig'.cucumber_language_server.setup{}
-- Docker
require'lspconfig'.dockerls.setup{}
require'lspconfig'local dap, dapui = require("dap"), require("dapui")
dap.listeners.after.event_initialized["dapui_config"] = function()
  dapui.open()
end
dap.listeners.before.event_terminated["dapui_config"] = function()
  dapui.close()
end
dap.listeners.before.event_exited["dapui_config"] = function()
  dapui.close()
end

require("dapui").setup()
dap.adapters.ruby = function(callback, config)
  callback {
    type = "server",
    host = "127.0.0.1",
    port = "${port}",
    executable = {
      command = "bundle",
      args = { "exec", "rdbg", "-n", "--open", "--port", "${port}",
        "-c", "--", "bundle", "exec", config.command, config.script,
      },
    },
  }
end

dap.configurations.ruby = {
  {
    type = "ruby",
    name = "debug current file",
    request = "attach",
    localfs = true,
    command = "ruby",
    script = "${file}",
  },
  {
    type = "ruby",
    name = "run current spec file",
    request = "attach",
    localfs = true,
    command = "rspec",
    script = "${file}",
  },
}