Merge remote-tracking branch 'origin/rolling'

15 files changed, 883 insertions, 233 deletions

diff --git a/lua/lsp/config.lua b/lua/lsp/config.lua
new file mode 100644
index 00000000..f13d9659
--- /dev/null
+++ b/lua/lsp/config.lua
@@ -0,0 +1,45 @@
+return {
+  templates_dir = join_paths(get_runtime_dir(), "site", "after", "ftplugin"),
+  diagnostics = {
+    signs = {
+      active = true,
+      values = {
+        { name = "LspDiagnosticsSignError", text = "" },
+        { name = "LspDiagnosticsSignWarning", text = "" },
+        { name = "LspDiagnosticsSignHint", text = "" },
+        { name = "LspDiagnosticsSignInformation", text = "" },
+      },
+    },
+    virtual_text = true,
+    update_in_insert = false,
+    underline = true,
+    severity_sort = true,
+  },
+  override = {},
+  document_highlight = true,
+  code_lens_refresh = true,
+  popup_border = "single",
+  on_attach_callback = nil,
+  on_init_callback = nil,
+  automatic_servers_installation = true,
+  buffer_mappings = {
+    normal_mode = {
+      ["K"] = { "<cmd>lua vim.lsp.buf.hover()<CR>", "Show hover" },
+      ["gd"] = { "<cmd>lua vim.lsp.buf.definition()<CR>", "Goto Definition" },
+      ["gD"] = { "<cmd>lua vim.lsp.buf.declaration()<CR>", "Goto declaration" },
+      ["gr"] = { "<cmd>lua vim.lsp.buf.references()<CR>", "Goto references" },
+      ["gI"] = { "<cmd>lua vim.lsp.buf.implementation()<CR>", "Goto Implementation" },
+      ["gs"] = { "<cmd>lua vim.lsp.buf.signature_help()<CR>", "show signature help" },
+      ["gp"] = { "<cmd>lua require'lsp.peek'.Peek('definition')<CR>", "Peek definition" },
+      ["gl"] = {
+        "<cmd>lua require'lsp.handlers'.show_line_diagnostics()<CR>",
+        "Show line diagnostics",
+      },
+    },
+    insert_mode = {},
+    visual_mode = {},
+  },
+  null_ls = {
+    setup = {},
+  },
+}
diff --git a/lua/lsp/handlers.lua b/lua/lsp/handlers.lua
index 2322e76a..ffb7564a 100644
--- a/lua/lsp/handlers.lua
+++ b/lua/lsp/handlers.lua
@@ -3,52 +3,73 @@
 local M = {}
 
 function M.setup()
-  vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(vim.lsp.diagnostic.on_publish_diagnostics, {
+  local config = { -- your config
     virtual_text = lvim.lsp.diagnostics.virtual_text,
-    signs = lvim.lsp.diagnostics.signs.active,
-    underline = lvim.lsp.document_highlight,
-  })
-
-  vim.lsp.handlers["textDocument/publishDiagnostics"] = function(_, _, params, client_id, _)
-    local config = { -- your config
-      virtual_text = lvim.lsp.diagnostics.virtual_text,
-      signs = lvim.lsp.diagnostics.signs,
-      underline = lvim.lsp.diagnostics.underline,
-      update_in_insert = lvim.lsp.diagnostics.update_in_insert,
-      severity_sort = lvim.lsp.diagnostics.severity_sort,
-    }
-    local uri = params.uri
-    local bufnr = vim.uri_to_bufnr(uri)
+    signs = lvim.lsp.diagnostics.signs,
+    underline = lvim.lsp.diagnostics.underline,
+    update_in_insert = lvim.lsp.diagnostics.update_in_insert,
+    severity_sort = lvim.lsp.diagnostics.severity_sort,
+  }
+  if vim.fn.has "nvim-0.5.1" > 0 then
+    vim.lsp.handlers["textDocument/publishDiagnostics"] = function(_, result, ctx, _)
+      local uri = result.uri
+      local bufnr = vim.uri_to_bufnr(uri)
+      if not bufnr then
+        return
+      end
 
-    if not bufnr then
-      return
-    end
+      local diagnostics = result.diagnostics
+      local ok, vim_diag = pcall(require, "vim.diagnostic")
+      if ok then
+        -- FIX: why can't we just use vim.diagnostic.get(buf_id)?
+        config.signs = true
+        for i, diagnostic in ipairs(diagnostics) do
+          local rng = diagnostic.range
+          diagnostics[i].lnum = rng["start"].line
+          diagnostics[i].end_lnum = rng["end"].line
+          diagnostics[i].col = rng["start"].character
+          diagnostics[i].end_col = rng["end"].character
+        end
+        local namespace = vim.lsp.diagnostic.get_namespace(ctx.client_id)
 
-    local diagnostics = params.diagnostics
+        vim_diag.set(namespace, bufnr, diagnostics, config)
+        if not vim.api.nvim_buf_is_loaded(bufnr) then
+          return
+        end
 
-    for i, v in ipairs(diagnostics) do
-      local source = v.source
-      if source then
-        if string.find(source, "/") then
-          source = string.sub(v.source, string.find(v.source, "([%w-_]+)$"))
+        local sign_names = {
+          "DiagnosticSignError",
+          "DiagnosticSignWarn",
+          "DiagnosticSignInfo",
+          "DiagnosticSignHint",
+        }
+        for i, sign in ipairs(lvim.lsp.diagnostics.signs.values) do
+          vim.fn.sign_define(sign_names[i], { texthl = sign_names[i], text = sign.text, numhl = "" })
         end
-        diagnostics[i].message = string.format("%s: %s", source, v.message)
+        vim_diag.show(namespace, bufnr, diagnostics, config)
       else
-        diagnostics[i].message = string.format("%s", v.message)
-      end
-
-      if vim.tbl_contains(vim.tbl_keys(v), "code") then
-        diagnostics[i].message = diagnostics[i].message .. string.format(" [%s]", v.code)
+        vim.lsp.diagnostic.save(diagnostics, bufnr, ctx.client_id)
+        if not vim.api.nvim_buf_is_loaded(bufnr) then
+          return
+        end
+        vim.lsp.diagnostic.display(diagnostics, bufnr, ctx.client_id, config)
       end
     end
+  else
+    vim.lsp.handlers["textDocument/publishDiagnostics"] = function(_, _, params, client_id, _)
+      local uri = params.uri
+      local bufnr = vim.uri_to_bufnr(uri)
+      if not bufnr then
+        return
+      end
 
-    vim.lsp.diagnostic.save(diagnostics, bufnr, client_id)
-
-    if not vim.api.nvim_buf_is_loaded(bufnr) then
-      return
+      local diagnostics = params.diagnostics
+      vim.lsp.diagnostic.save(diagnostics, bufnr, client_id)
+      if not vim.api.nvim_buf_is_loaded(bufnr) then
+        return
+      end
+      vim.lsp.diagnostic.display(diagnostics, bufnr, client_id, config)
     end
-
-    vim.lsp.diagnostic.display(diagnostics, bufnr, client_id, config)
   end
 
   vim.lsp.handlers["textDocument/hover"] = vim.lsp.with(vim.lsp.handlers.hover, {
@@ -60,4 +81,89 @@ function M.setup()
   })
 end
 
+local function split_by_chunk(text, chunkSize)
+  local s = {}
+  for i = 1, #text, chunkSize do
+    s[#s + 1] = text:sub(i, i + chunkSize - 1)
+  end
+  return s
+end
+
+function M.show_line_diagnostics()
+  -- TODO: replace all this with vim.diagnostic.show_position_diagnostics()
+  local diagnostics = vim.lsp.diagnostic.get_line_diagnostics()
+  local severity_highlight = {
+    "LspDiagnosticsFloatingError",
+    "LspDiagnosticsFloatingWarning",
+    "LspDiagnosticsFloatingInformation",
+    "LspDiagnosticsFloatingHint",
+  }
+  local ok, vim_diag = pcall(require, "vim.diagnostic")
+  if ok then
+    local buf_id = vim.api.nvim_win_get_buf(0)
+    local win_id = vim.api.nvim_get_current_win()
+    local cursor_position = vim.api.nvim_win_get_cursor(win_id)
+    severity_highlight = {
+      "DiagnosticFloatingError",
+      "DiagnosticFloatingWarn",
+      "DiagnosticFloatingInfo",
+      "DiagnosticFloatingHint",
+    }
+    diagnostics = vim_diag.get(buf_id, { lnum = cursor_position[1] - 1 })
+  end
+  local lines = {}
+  local max_width = vim.fn.winwidth(0) - 5
+  local height = #diagnostics
+  local width = 0
+  local opts = {}
+  local close_events = { "CursorMoved", "CursorMovedI", "BufHidden", "InsertCharPre" }
+  if height == 0 then
+    return
+  end
+  local bufnr = vim.api.nvim_create_buf(false, true)
+  local diag_message
+  table.sort(diagnostics, function(a, b)
+    return a.severity < b.severity
+  end)
+  for i, diagnostic in ipairs(diagnostics) do
+    local source = diagnostic.source
+    diag_message = diagnostic.message:gsub("[\n\r]", " ")
+    if source then
+      if string.find(source, "/") then
+        source = string.sub(diagnostic.source, string.find(diagnostic.source, "([%w-_]+)$"))
+      end
+      diag_message = string.format("%d. %s: %s", i, source, diag_message)
+    else
+      diag_message = string.format("%d. %s", i, diag_message)
+    end
+    if diagnostic.code then
+      diag_message = string.format("%s [%s]", diag_message, diagnostic.code)
+    end
+    local msgs = split_by_chunk(diag_message, max_width)
+    for _, diag in ipairs(msgs) do
+      table.insert(lines, { message = diag, severity = diagnostic.severity })
+      width = math.max(diag:len(), width)
+    end
+  end
+  height = #lines
+  opts = vim.lsp.util.make_floating_popup_options(width, height, opts)
+  opts["style"] = "minimal"
+  opts["border"] = "rounded"
+  opts["focusable"] = true
+
+  vim.api.nvim_buf_set_option(bufnr, "bufhidden", "wipe")
+  local winnr = vim.api.nvim_open_win(bufnr, false, opts)
+  vim.api.nvim_win_set_option(winnr, "winblend", 0)
+  vim.api.nvim_buf_set_var(bufnr, "lsp_floating_window", winnr)
+  for i, diag in ipairs(lines) do
+    vim.api.nvim_buf_set_lines(bufnr, i - 1, i - 1, 0, { diag.message })
+    vim.api.nvim_buf_add_highlight(bufnr, -1, severity_highlight[diag.severity], i - 1, 0, diag.message:len())
+  end
+
+  vim.api.nvim_command(
+    "autocmd QuitPre <buffer> ++nested ++once lua pcall(vim.api.nvim_win_close, " .. winnr .. ", true)"
+  )
+  vim.lsp.util.close_preview_autocmd(close_events, winnr)
+end
+
 return M
diff --git a/lua/lsp/init.lua b/lua/lsp/init.lua
index 9c948803..88111005 100644
--- a/lua/lsp/init.lua
+++ b/lua/lsp/init.lua
@@ -1,15 +1,6 @@
 local M = {}
 local Log = require "core.log"
-
-function M.config()
-  vim.lsp.protocol.CompletionItemKind = lvim.lsp.completion.item_kind
-
-  for _, sign in ipairs(lvim.lsp.diagnostics.signs.values) do
-    vim.fn.sign_define(sign.name, { texthl = sign.name, text = sign.text, numhl = sign.name })
-  end
-
-  require("lsp.handlers").setup()
-end
+local utils = require "utils"
 
 local function lsp_highlight_document(client)
   if lvim.lsp.document_highlight == false then
@@ -19,9 +10,6 @@ local function lsp_highlight_document(client)
   if client.resolved_capabilities.document_highlight then
     vim.api.nvim_exec(
       [[
-      hi LspReferenceRead cterm=bold ctermbg=red guibg=#464646
-      hi LspReferenceText cterm=bold ctermbg=red guibg=#464646
-      hi LspReferenceWrite cterm=bold ctermbg=red guibg=#464646
       augroup lsp_document_highlight
         autocmd! * <buffer>
         autocmd CursorHold <buffer> lua vim.lsp.buf.document_highlight()
@@ -33,26 +21,49 @@ local function lsp_highlight_document(client)
   end
 end
 
-local function add_lsp_buffer_keybindings(bufnr)
-  local status_ok, wk = pcall(require, "which-key")
-  if not status_ok then
+local function lsp_code_lens_refresh(client)
+  if lvim.lsp.code_lens_refresh == false then
     return
   end
 
-  local keys = {
-    ["K"] = { "<cmd>lua vim.lsp.buf.hover()<CR>", "Show hover" },
-    ["gd"] = { "<cmd>lua vim.lsp.buf.definition()<CR>", "Goto Definition" },
-    ["gD"] = { "<cmd>lua vim.lsp.buf.declaration()<CR>", "Goto declaration" },
-    ["gr"] = { "<cmd>lua vim.lsp.buf.references()<CR>", "Goto references" },
-    ["gI"] = { "<cmd>lua vim.lsp.buf.implementation()<CR>", "Goto Implementation" },
-    ["gs"] = { "<cmd>lua vim.lsp.buf.signature_help()<CR>", "show signature help" },
-    ["gp"] = { "<cmd>lua require'lsp.peek'.Peek('definition')<CR>", "Peek definition" },
-    ["gl"] = {
-      "<cmd>lua vim.lsp.diagnostic.show_line_diagnostics({ show_header = false, border = 'single' })<CR>",
-      "Show line diagnostics",
-    },
+  if client.resolved_capabilities.code_lens then
+    vim.api.nvim_exec(
+      [[
+      augroup lsp_code_lens_refresh
+        autocmd! * <buffer>
+        autocmd InsertLeave <buffer> lua vim.lsp.codelens.refresh()
+        autocmd InsertLeave <buffer> lua vim.lsp.codelens.display()
+      augroup END
+    ]],
+      false
+    )
+  end
+end
+
+local function add_lsp_buffer_keybindings(bufnr)
+  local mappings = {
+    normal_mode = "n",
+    insert_mode = "i",
+    visual_mode = "v",
   }
-  wk.register(keys, { mode = "n", buffer = bufnr })
+
+  if lvim.builtin.which_key.active then
+    -- Remap using which_key
+    local status_ok, wk = pcall(require, "which-key")
+    if not status_ok then
+      return
+    end
+    for mode_name, mode_char in pairs(mappings) do
+      wk.register(lvim.lsp.buffer_mappings[mode_name], { mode = mode_char, buffer = bufnr })
+    end
+  else
+    -- Remap using nvim api
+    for mode_name, mode_char in pairs(mappings) do
+      for key, remap in pairs(lvim.lsp.buffer_mappings[mode_name]) do
+        vim.api.nvim_buf_set_keymap(bufnr, mode_char, key, remap[1], { noremap = true, silent = true })
+      end
+    end
+  end
 end
 
 function M.common_capabilities()
@@ -65,35 +76,30 @@ function M.common_capabilities()
       "additionalTextEdits",
     },
   }
-  return capabilities
-end
 
-function M.get_ls_capabilities(client_id)
-  local client
-  if not client_id then
-    local buf_clients = vim.lsp.buf_get_clients()
-    for _, buf_client in ipairs(buf_clients) do
-      if buf_client.name ~= "null-ls" then
-        client_id = buf_client.id
-        break
-      end
-    end
-  end
-  if not client_id then
-    error "Unable to determine client_id"
+  local status_ok, cmp_nvim_lsp = pcall(require, "cmp_nvim_lsp")
+  if status_ok then
+    capabilities = cmp_nvim_lsp.update_capabilities(capabilities)
   end
 
-  client = vim.lsp.get_client_by_id(tonumber(client_id))
-
-  local enabled_caps = {}
+  return capabilities
+end
 
-  for k, v in pairs(client.resolved_capabilities) do
-    if v == true then
-      table.insert(enabled_caps, k)
+local function select_default_formater(client)
+  local client_formatting = client.resolved_capabilities.document_formatting
+    or client.resolved_capabilities.document_range_formatting
+  if client.name == "null-ls" or not client_formatting then
+    return
+  end
+  Log:debug("Checking for formatter overriding for " .. client.name)
+  local client_filetypes = client.config.filetypes or {}
+  for _, filetype in ipairs(client_filetypes) do
+    if lvim.lang[filetype] and #vim.tbl_keys(lvim.lang[filetype].formatters) > 0 then
+      Log:debug("Formatter overriding detected. Disabling formatting capabilities for " .. client.name)
+      client.resolved_capabilities.document_formatting = false
+      client.resolved_capabilities.document_range_formatting = false
     end
   end
-
-  return enabled_caps
 end
 
 function M.common_on_init(client, bufnr)
@@ -102,55 +108,58 @@ function M.common_on_init(client, bufnr)
     Log:debug "Called lsp.on_init_callback"
     return
   end
-
-  local formatters = lvim.lang[vim.bo.filetype].formatters
-  if not vim.tbl_isempty(formatters) and formatters[1]["exe"] ~= nil and formatters[1].exe ~= "" then
-    client.resolved_capabilities.document_formatting = false
-    Log:debug(
-      string.format("Overriding language server [%s] with format provider [%s]", client.name, formatters[1].exe)
-    )
-  end
+  select_default_formater(client)
 end
 
 function M.common_on_attach(client, bufnr)
   if lvim.lsp.on_attach_callback then
     lvim.lsp.on_attach_callback(client, bufnr)
-    Log:debug "Called lsp.on_init_callback"
+    Log:debug "Called lsp.on_attach_callback"
   end
   lsp_highlight_document(client)
+  lsp_code_lens_refresh(client)
   add_lsp_buffer_keybindings(bufnr)
-  require("lsp.null-ls").setup(vim.bo.filetype)
 end
 
-function M.setup(lang)
-  local lsp_utils = require "lsp.utils"
-  local lsp = lvim.lang[lang].lsp
-  if lsp_utils.is_client_active(lsp.provider) then
-    return
+local function bootstrap_nlsp(opts)
+  opts = opts or {}
+  local lsp_settings_status_ok, lsp_settings = pcall(require, "nlspsettings")
+  if lsp_settings_status_ok then
+    lsp_settings.setup(opts)
   end
+end
 
-  local overrides = lvim.lsp.override
-  if type(overrides) == "table" then
-    if vim.tbl_contains(overrides, lang) then
-      return
-    end
+function M.get_common_opts()
+  return {
+    on_attach = M.common_on_attach,
+    on_init = M.common_on_init,
+    capabilities = M.common_capabilities(),
+  }
+end
+
+function M.setup()
+  Log:debug "Setting up LSP support"
+
+  local lsp_status_ok, _ = pcall(require, "lspconfig")
+  if not lsp_status_ok then
+    return
   end
 
-  if lsp.provider ~= nil and lsp.provider ~= "" then
-    local lspconfig = require "lspconfig"
+  for _, sign in ipairs(lvim.lsp.diagnostics.signs.values) do
+    vim.fn.sign_define(sign.name, { texthl = sign.name, text = sign.text, numhl = sign.name })
+  end
 
-    if not lsp.setup.on_attach then
-      lsp.setup.on_attach = M.common_on_attach
-    end
-    if not lsp.setup.on_init then
-      lsp.setup.on_init = M.common_on_init
-    end
-    if not lsp.setup.capabilities then
-      lsp.setup.capabilities = M.common_capabilities()
-    end
+  require("lsp.handlers").setup()
 
-    lspconfig[lsp.provider].setup(lsp.setup)
+  if not utils.is_directory(lvim.lsp.templates_dir) then
+    require("lsp.templates").generate_templates()
   end
+
+  bootstrap_nlsp { config_home = utils.join_paths(get_config_dir(), "lsp-settings") }
+
+  require("lsp.null-ls").setup()
+
+  require("utils").toggle_autoformat()
 end
 
 return M
diff --git a/lua/lsp/manager.lua b/lua/lsp/manager.lua
new file mode 100644
index 00000000..9cb81910
--- /dev/null
+++ b/lua/lsp/manager.lua
@@ -0,0 +1,86 @@
+local M = {}
+
+local Log = require "core.log"
+local lsp_utils = require "lsp.utils"
+
+function M.init_defaults(languages)
+  for _, entry in ipairs(languages) do
+    if not lvim.lang[entry] then
+      lvim.lang[entry] = {
+        formatters = {},
+        linters = {},
+        lsp = {},
+      }
+    end
+  end
+end
+
+local function is_overridden(server)
+  local overrides = lvim.lsp.override
+  if type(overrides) == "table" then
+    if vim.tbl_contains(overrides, server) then
+      return true
+    end
+  end
+end
+
+---Resolve the configuration for a server based on both common and user configuration
+---@param name string
+---@param user_config table [optional]
+---@return table
+local function resolve_config(name, user_config)
+  local config = {
+    on_attach = require("lsp").common_on_attach,
+    on_init = require("lsp").common_on_init,
+    capabilities = require("lsp").common_capabilities(),
+  }
+
+  local status_ok, custom_config = pcall(require, "lsp/providers/" .. name)
+  if status_ok then
+    Log:debug("Using custom configuration for requested server: " .. name)
+    config = vim.tbl_deep_extend("force", config, custom_config)
+  end
+
+  if user_config then
+    config = vim.tbl_deep_extend("force", config, user_config)
+  end
+
+  return config
+end
+
+---Setup a language server by providing a name
+---@param server_name string name of the language server
+---@param user_config table [optional] when available it will take predence over any default configurations
+function M.setup(server_name, user_config)
+  vim.validate { name = { server_name, "string" } }
+
+  if lsp_utils.is_client_active(server_name) or is_overridden(server_name) then
+    return
+  end
+
+  local config = resolve_config(server_name, user_config)
+  local server_available, requested_server = require("nvim-lsp-installer.servers").get_server(server_name)
+
+  local function ensure_installed(server)
+    if server:is_installed() then
+      return true
+    end
+    if not lvim.lsp.automatic_servers_installation then
+      Log:debug(server.name .. " is not managed by the automatic installer")
+      return false
+    end
+    Log:debug(string.format("Installing [%s]", server.name))
+    server:install()
+    vim.schedule(function()
+      vim.cmd [[LspStart]]
+    end)
+  end
+
+  if server_available and ensure_installed(requested_server) then
+    requested_server:setup(config)
+  else
+    require("lspconfig")[server_name].setup(config)
+  end
+end
+
+return M
diff --git a/lua/lsp/null-ls/formatters.lua b/lua/lsp/null-ls/formatters.lua
index 26be00da..4728b908 100644
--- a/lua/lsp/null-ls/formatters.lua
+++ b/lua/lsp/null-ls/formatters.lua
@@ -1,36 +1,23 @@
 local M = {}
-local formatters_by_ft = {}
 
 local null_ls = require "null-ls"
 local services = require "lsp.null-ls.services"
 local Log = require "core.log"
 
-local function list_names(formatters, options)
-  options = options or {}
-  local filter = options.filter or "supported"
-
-  return vim.tbl_keys(formatters[filter])
-end
-
 function M.list_supported_names(filetype)
-  if not formatters_by_ft[filetype] then
-    return {}
-  end
-  return list_names(formatters_by_ft[filetype], { filter = "supported" })
-end
-
-function M.list_unsupported_names(filetype)
-  if not formatters_by_ft[filetype] then
-    return {}
-  end
-  return list_names(formatters_by_ft[filetype], { filter = "unsupported" })
+  local null_ls_methods = require "null-ls.methods"
+  local formatter_method = null_ls_methods.internal["FORMATTING"]
+  local registered_providers = services.list_registered_providers_names(filetype)
+  return registered_providers[formatter_method] or {}
 end
 
 function M.list_available(filetype)
   local formatters = {}
+  local tbl = require "utils.table"
   for _, provider in pairs(null_ls.builtins.formatting) do
-    -- TODO: Add support for wildcard filetypes
-    if vim.tbl_contains(provider.filetypes or {}, filetype) then
+    if tbl.contains(provider.filetypes or {}, function(ft)
+      return ft == "*" or ft == filetype
+    end) then
       table.insert(formatters, provider.name)
     end
   end
@@ -42,19 +29,24 @@ function M.list_configured(formatter_configs)
   local formatters, errors = {}, {}
 
   for _, fmt_config in ipairs(formatter_configs) do
-    local formatter = null_ls.builtins.formatting[fmt_config.exe]
+    local formatter_name = fmt_config.exe:gsub("-", "_")
+    local formatter = null_ls.builtins.formatting[formatter_name]
 
     if not formatter then
-      Log:error("Not a valid formatter:", fmt_config.exe)
+      Log:error("Not a valid formatter: " .. fmt_config.exe)
       errors[fmt_config.exe] = {} -- Add data here when necessary
     else
       local formatter_cmd = services.find_command(formatter._opts.command)
       if not formatter_cmd then
-        Log:warn("Not found:", formatter._opts.command)
+        Log:warn("Not found: " .. formatter._opts.command)
         errors[fmt_config.exe] = {} -- Add data here when necessary
       else
-        Log:debug("Using formatter:", formatter_cmd)
-        formatters[fmt_config.exe] = formatter.with { command = formatter_cmd, extra_args = fmt_config.args }
+        Log:debug("Using formatter: " .. formatter_cmd)
+        formatters[fmt_config.exe] = formatter.with {
+          command = formatter_cmd,
+          extra_args = fmt_config.args,
+          filetypes = fmt_config.filetypes,
+        }
       end
     end
   end
@@ -62,13 +54,13 @@ function M.list_configured(formatter_configs)
   return { supported = formatters, unsupported = errors }
 end
 
-function M.setup(filetype, options)
-  if not lvim.lang[filetype] or (formatters_by_ft[filetype] and not options.force_reload) then
+function M.setup(formatter_configs)
+  if vim.tbl_isempty(formatter_configs) then
     return
   end
 
-  formatters_by_ft[filetype] = M.list_configured(lvim.lang[filetype].formatters)
-  null_ls.register { sources = formatters_by_ft[filetype].supported }
+  local formatters_by_ft = M.list_configured(formatter_configs)
+  null_ls.register { sources = formatters_by_ft.supported }
 end
 
 return M
diff --git a/lua/lsp/null-ls/init.lua b/lua/lsp/null-ls/init.lua
index ce4c07d9..0d030c22 100644
--- a/lua/lsp/null-ls/init.lua
+++ b/lua/lsp/null-ls/init.lua
@@ -1,44 +1,32 @@
 local M = {}
 
-function M.list_supported_provider_names(filetype)
-  local names = {}
-
-  local formatters = require "lsp.null-ls.formatters"
-  local linters = require "lsp.null-ls.linters"
-
-  vim.list_extend(names, formatters.list_supported_names(filetype))
-  vim.list_extend(names, linters.list_supported_names(filetype))
-
-  return names
-end
-
-function M.list_unsupported_provider_names(filetype)
-  local names = {}
-
-  local formatters = require "lsp.null-ls.formatters"
-  local linters = require "lsp.null-ls.linters"
-
-  vim.list_extend(names, formatters.list_unsupported_names(filetype))
-  vim.list_extend(names, linters.list_unsupported_names(filetype))
-
-  return names
-end
-
--- TODO: for linters and formatters with spaces and '-' replace with '_'
-function M.setup(filetype, options)
-  options = options or {}
-
-  local ok, _ = pcall(require, "null-ls")
-  if not ok then
-    require("core.log"):error "Missing null-ls dependency"
+local Log = require "core.log"
+local formatters = require "lsp.null-ls.formatters"
+local linters = require "lsp.null-ls.linters"
+
+function M:setup()
+  local status_ok, null_ls = pcall(require, "null-ls")
+  if not status_ok then
+    Log:error "Missing null-ls dependency"
     return
   end
 
-  local formatters = require "lsp.null-ls.formatters"
-  local linters = require "lsp.null-ls.linters"
-
-  formatters.setup(filetype, options)
-  linters.setup(filetype, options)
+  null_ls.config()
+  require("lspconfig")["null-ls"].setup(lvim.lsp.null_ls.setup)
+  for filetype, config in pairs(lvim.lang) do
+    if not vim.tbl_isempty(config.formatters) then
+      vim.tbl_map(function(c)
+        c.filetypes = { filetype }
+      end, config.formatters)
+      formatters.setup(config.formatters)
+    end
+    if not vim.tbl_isempty(config.linters) then
+      vim.tbl_map(function(c)
+        c.filetypes = { filetype }
+      end, config.formatters)
+      linters.setup(config.linters)
+    end
+  end
 end
 
 return M
diff --git a/lua/lsp/null-ls/linters.lua b/lua/lsp/null-ls/linters.lua
index bc191d7e..549c6cdd 100644
--- a/lua/lsp/null-ls/linters.lua
+++ b/lua/lsp/null-ls/linters.lua
@@ -1,36 +1,23 @@
 local M = {}
-local linters_by_ft = {}
 
 local null_ls = require "null-ls"
 local services = require "lsp.null-ls.services"
 local Log = require "core.log"
 
-local function list_names(linters, options)
-  options = options or {}
-  local filter = options.filter or "supported"
-
-  return vim.tbl_keys(linters[filter])
-end
-
 function M.list_supported_names(filetype)
-  if not linters_by_ft[filetype] then
-    return {}
-  end
-  return list_names(linters_by_ft[filetype], { filter = "supported" })
-end
-
-function M.list_unsupported_names(filetype)
-  if not linters_by_ft[filetype] then
-    return {}
-  end
-  return list_names(linters_by_ft[filetype], { filter = "unsupported" })
+  local null_ls_methods = require "null-ls.methods"
+  local linter_method = null_ls_methods.internal["DIAGNOSTICS"]
+  local registered_providers = services.list_registered_providers_names(filetype)
+  return registered_providers[linter_method] or {}
 end
 
 function M.list_available(filetype)
   local linters = {}
+  local tbl = require "utils.table"
   for _, provider in pairs(null_ls.builtins.diagnostics) do
-    -- TODO: Add support for wildcard filetypes
-    if vim.tbl_contains(provider.filetypes or {}, filetype) then
+    if tbl.contains(provider.filetypes or {}, function(ft)
+      return ft == "*" or ft == filetype
+    end) then
       table.insert(linters, provider.name)
     end
   end
@@ -42,19 +29,24 @@ function M.list_configured(linter_configs)
   local linters, errors = {}, {}
 
   for _, lnt_config in pairs(linter_configs) do
-    local linter = null_ls.builtins.diagnostics[lnt_config.exe]
+    local linter_name = lnt_config.exe:gsub("-", "_")
+    local linter = null_ls.builtins.diagnostics[linter_name]
 
     if not linter then
-      Log:error("Not a valid linter:", lnt_config.exe)
+      Log:error("Not a valid linter: " .. lnt_config.exe)
       errors[lnt_config.exe] = {} -- Add data here when necessary
     else
       local linter_cmd = services.find_command(linter._opts.command)
       if not linter_cmd then
-        Log:warn("Not found:", linter._opts.command)
+        Log:warn("Not found: " .. linter._opts.command)
         errors[lnt_config.exe] = {} -- Add data here when necessary
       else
-        Log:debug("Using linter:", linter_cmd)
-        linters[lnt_config.exe] = linter.with { command = linter_cmd, extra_args = lnt_config.args }
+        Log:debug("Using linter: " .. linter_cmd)
+        linters[lnt_config.exe] = linter.with {
+          command = linter_cmd,
+          extra_args = lnt_config.args,
+          filetypes = lnt_config.filetypes,
+        }
       end
     end
   end
@@ -62,13 +54,13 @@ function M.list_configured(linter_configs)
   return { supported = linters, unsupported = errors }
 end
 
-function M.setup(filetype, options)
-  if not lvim.lang[filetype] or (linters_by_ft[filetype] and not options.force_reload) then
+function M.setup(linter_configs)
+  if vim.tbl_isempty(linter_configs) then
     return
   end
 
-  linters_by_ft[filetype] = M.list_configured(lvim.lang[filetype].linters)
-  null_ls.register { sources = linters_by_ft[filetype].supported }
+  local linters = M.list_configured(linter_configs)
+  null_ls.register { sources = linters.supported }
 end
 
 return M
diff --git a/lua/lsp/null-ls/services.lua b/lua/lsp/null-ls/services.lua
index a1e3a06c..ef9e7d22 100644
--- a/lua/lsp/null-ls/services.lua
+++ b/lua/lsp/null-ls/services.lua
@@ -4,8 +4,8 @@ local function find_root_dir()
   local util = require "lspconfig/util"
   local lsp_utils = require "lsp.utils"
 
-  local status_ok, ts_client = lsp_utils.is_client_active "typescript"
-  if status_ok then
+  local ts_client = lsp_utils.is_client_active "typescript"
+  if ts_client then
     return ts_client.config.root_dir
   end
   local dirname = vim.fn.expand "%:p:h"
@@ -28,6 +28,7 @@ local local_providers = {
   prettier_d_slim = { find = from_node_modules },
   eslint_d = { find = from_node_modules },
   eslint = { find = from_node_modules },
+  stylelint = { find = from_node_modules },
 }
 
 function M.find_command(command)
@@ -44,4 +45,19 @@ function M.find_command(command)
   return nil
 end
 
+function M.list_registered_providers_names(filetype)
+  local u = require "null-ls.utils"
+  local c = require "null-ls.config"
+  local registered = {}
+  for method, source in pairs(c.get()._methods) do
+    for name, filetypes in pairs(source) do
+      if u.filetype_matches(filetypes, filetype) then
+        registered[method] = registered[method] or {}
+        table.insert(registered[method], name)
+      end
+    end
+  end
+  return registered
+end
+
 return M
diff --git a/lua/lsp/peek.lua b/lua/lsp/peek.lua
index cc8e57a9..cb00488e 100644
--- a/lua/lsp/peek.lua
+++ b/lua/lsp/peek.lua
@@ -42,6 +42,7 @@ local function create_floating_file(location, opts)
   local winnr = vim.api.nvim_open_win(bufnr, false, opts)
   vim.api.nvim_win_set_option(winnr, "winblend", 0)
 
+  vim.api.nvim_win_set_cursor(winnr, { range.start.line + 1, range.start.character })
   vim.api.nvim_buf_set_var(bufnr, "lsp_floating_window", winnr)
 
   -- Set some autocmds to close the window
@@ -53,9 +54,8 @@ local function create_floating_file(location, opts)
   return bufnr, winnr
 end
 
-local function preview_location_callback(_, method, result)
+local function preview_location_callback(result)
   if result == nil or vim.tbl_isempty(result) then
-    print("peek: No location found: " .. method)
     return nil
   end
 
@@ -73,6 +73,14 @@ local function preview_location_callback(_, method, result)
   end
 end
 
+local function preview_location_callback_old_signature(_, _, result)
+  return preview_location_callback(result)
+end
+
+local function preview_location_callback_new_signature(_, result)
+  return preview_location_callback(result)
+end
+
 function M.open_file()
   -- Get the file currently open in the floating window
   local filepath = vim.fn.expand "%:."
@@ -128,7 +136,11 @@ function M.Peek(what)
   else
     -- Make a new request and then create the new window in the callback
     local params = vim.lsp.util.make_position_params()
-    local success, _ = pcall(vim.lsp.buf_request, 0, "textDocument/" .. what, params, preview_location_callback)
+    local preview_callback = preview_location_callback_old_signature
+    if vim.fn.has "nvim-0.5.1" > 0 then
+      preview_callback = preview_location_callback_new_signature
+    end
+    local success, _ = pcall(vim.lsp.buf_request, 0, "textDocument/" .. what, params, preview_callback)
     if not success then
       print(
         'peek: Error calling LSP method "textDocument/' .. what .. '". The current language lsp might not support it.'
diff --git a/lua/lsp/providers/jsonls.lua b/lua/lsp/providers/jsonls.lua
new file mode 100644
index 00000000..1fffa686
--- /dev/null
+++ b/lua/lsp/providers/jsonls.lua
@@ -0,0 +1,197 @@
+local default_schemas = nil
+local status_ok, jsonls_settings = pcall(require, "nlspsettings.jsonls")
+if status_ok then
+  default_schemas = jsonls_settings.get_default_schemas()
+end
+
+local schemas = {
+  {
+    description = "TypeScript compiler configuration file",
+    fileMatch = {
+      "tsconfig.json",
+      "tsconfig.*.json",
+    },
+    url = "https://json.schemastore.org/tsconfig.json",
+  },
+  {
+    description = "Lerna config",
+    fileMatch = { "lerna.json" },
+    url = "https://json.schemastore.org/lerna.json",
+  },
+  {
+    description = "Babel configuration",
+    fileMatch = {
+      ".babelrc.json",
+      ".babelrc",
+      "babel.config.json",
+    },
+    url = "https://json.schemastore.org/babelrc.json",
+  },
+  {
+    description = "ESLint config",
+    fileMatch = {
+      ".eslintrc.json",
+      ".eslintrc",
+    },
+    url = "https://json.schemastore.org/eslintrc.json",
+  },
+  {
+    description = "Bucklescript config",
+    fileMatch = { "bsconfig.json" },
+    url = "https://raw.githubusercontent.com/rescript-lang/rescript-compiler/8.2.0/docs/docson/build-schema.json",
+  },
+  {
+    description = "Prettier config",
+    fileMatch = {
+      ".prettierrc",
+      ".prettierrc.json",
+      "prettier.config.json",
+    },
+    url = "https://json.schemastore.org/prettierrc",
+  },
+  {
+    description = "Vercel Now config",
+    fileMatch = { "now.json" },
+    url = "https://json.schemastore.org/now",
+  },
+  {
+    description = "Stylelint config",
+    fileMatch = {
+      ".stylelintrc",
+      ".stylelintrc.json",
+      "stylelint.config.json",
+    },
+    url = "https://json.schemastore.org/stylelintrc",
+  },
+  {
+    description = "A JSON schema for the ASP.NET LaunchSettings.json files",
+    fileMatch = { "launchsettings.json" },
+    url = "https://json.schemastore.org/launchsettings.json",
+  },
+  {
+    description = "Schema for CMake Presets",
+    fileMatch = {
+      "CMakePresets.json",
+      "CMakeUserPresets.json",
+    },
+    url = "https://raw.githubusercontent.com/Kitware/CMake/master/Help/manual/presets/schema.json",
+  },
+  {
+    description = "Configuration file as an alternative for configuring your repository in the settings page.",
+    fileMatch = {
+      ".codeclimate.json",
+    },
+    url = "https://json.schemastore.org/codeclimate.json",
+  },
+  {
+    description = "LLVM compilation database",
+    fileMatch = {
+      "compile_commands.json",
+    },
+    url = "https://json.schemastore.org/compile-commands.json",
+  },
+  {
+    description = "Config file for Command Task Runner",
+    fileMatch = {
+      "commands.json",
+    },
+    url = "https://json.schemastore.org/commands.json",
+  },
+  {
+    description = "AWS CloudFormation provides a common language for you to describe and provision all the infrastructure resources in your cloud environment.",
+    fileMatch = {
+      "*.cf.json",
+      "cloudformation.json",
+    },
+    url = "https://raw.githubusercontent.com/awslabs/goformation/v5.2.9/schema/cloudformation.schema.json",
+  },
+  {
+    description = "The AWS Serverless Application Model (AWS SAM, previously known as Project Flourish) extends AWS CloudFormation to provide a simplified way of defining the Amazon API Gateway APIs, AWS Lambda functions, and Amazon DynamoDB tables needed by your serverless application.",
+    fileMatch = {
+      "serverless.template",
+      "*.sam.json",
+      "sam.json",
+    },
+    url = "https://raw.githubusercontent.com/awslabs/goformation/v5.2.9/schema/sam.schema.json",
+  },
+  {
+    description = "Json schema for properties json file for a GitHub Workflow template",
+    fileMatch = {
+      ".github/workflow-templates/**.properties.json",
+    },
+    url = "https://json.schemastore.org/github-workflow-template-properties.json",
+  },
+  {
+    description = "golangci-lint configuration file",
+    fileMatch = {
+      ".golangci.toml",
+      ".golangci.json",
+    },
+    url = "https://json.schemastore.org/golangci-lint.json",
+  },
+  {
+    description = "JSON schema for the JSON Feed format",
+    fileMatch = {
+      "feed.json",
+    },
+    url = "https://json.schemastore.org/feed.json",
+    versions = {
+      ["1"] = "https://json.schemastore.org/feed-1.json",
+      ["1.1"] = "https://json.schemastore.org/feed.json",
+    },
+  },
+  {
+    description = "Packer template JSON configuration",
+    fileMatch = {
+      "packer.json",
+    },
+    url = "https://json.schemastore.org/packer.json",
+  },
+  {
+    description = "NPM configuration file",
+    fileMatch = {
+      "package.json",
+    },
+    url = "https://json.schemastore.org/package.json",
+  },
+  {
+    description = "JSON schema for Visual Studio component configuration files",
+    fileMatch = {
+      "*.vsconfig",
+    },
+    url = "https://json.schemastore.org/vsconfig.json",
+  },
+  {
+    description = "Resume json",
+    fileMatch = { "resume.json" },
+    url = "https://raw.githubusercontent.com/jsonresume/resume-schema/v1.0.0/schema.json",
+  },
+}
+
+local function extend(tab1, tab2)
+  for _, value in ipairs(tab2) do
+    table.insert(tab1, value)
+  end
+  return tab1
+end
+
+local extended_schemas = extend(schemas, default_schemas)
+
+local opts = {
+  settings = {
+    json = {
+      schemas = extended_schemas,
+    },
+  },
+  setup = {
+    commands = {
+      Format = {
+        function()
+          vim.lsp.buf.range_formatting({}, { 0, 0 }, { vim.fn.line "$", 0 })
+        end,
+      },
+    },
+  },
+}
+
+return opts
diff --git a/lua/lsp/providers/sumneko_lua.lua b/lua/lsp/providers/sumneko_lua.lua
new file mode 100644
index 00000000..4fee1fd1
--- /dev/null
+++ b/lua/lsp/providers/sumneko_lua.lua
@@ -0,0 +1,19 @@
+local opts = {
+  settings = {
+    Lua = {
+      diagnostics = {
+        globals = { "vim", "lvim" },
+      },
+      workspace = {
+        library = {
+          [require("utils").join_paths(get_runtime_dir(), "lvim", "lua")] = true,
+          [vim.fn.expand "$VIMRUNTIME/lua"] = true,
+          [vim.fn.expand "$VIMRUNTIME/lua/vim/lsp"] = true,
+        },
+        maxPreload = 100000,
+        preloadFileSize = 10000,
+      },
+    },
+  },
+}
+return opts
diff --git a/lua/lsp/providers/vuels.lua b/lua/lsp/providers/vuels.lua
new file mode 100644
index 00000000..3f44275d
--- /dev/null
+++ b/lua/lsp/providers/vuels.lua
@@ -0,0 +1,26 @@
+local opts = {
+  setup = {
+    root_dir = function(fname)
+      local util = require "lspconfig/util"
+      return util.root_pattern "package.json"(fname) or util.root_pattern "vue.config.js"(fname) or vim.fn.getcwd()
+    end,
+    init_options = {
+      config = {
+        vetur = {
+          completion = {
+            autoImport = true,
+            tagCasing = "kebab",
+            useScaffoldSnippets = true,
+          },
+          useWorkspaceDependencies = true,
+          validation = {
+            script = true,
+            style = true,
+            template = true,
+          },
+        },
+      },
+    },
+  },
+}
+return opts
diff --git a/lua/lsp/providers/yamlls.lua b/lua/lsp/providers/yamlls.lua
new file mode 100644
index 00000000..156a35b0
--- /dev/null
+++ b/lua/lsp/providers/yamlls.lua
@@ -0,0 +1,30 @@
+local opts = {
+  settings = {
+    yaml = {
+      hover = true,
+      completion = true,
+      validate = true,
+      schemaStore = {
+        enable = true,
+        url = "https://www.schemastore.org/api/json/catalog.json",
+      },
+      schemas = {
+        kubernetes = {
+          "daemon.{yml,yaml}",
+          "manager.{yml,yaml}",
+          "restapi.{yml,yaml}",
+          "role.{yml,yaml}",
+          "role_binding.{yml,yaml}",
+          "*onfigma*.{yml,yaml}",
+          "*ngres*.{yml,yaml}",
+          "*ecre*.{yml,yaml}",
+          "*eployment*.{yml,yaml}",
+          "*ervic*.{yml,yaml}",
+          "kubectl-edit*.yaml",
+        },
+      },
+    },
+  },
+}
+
+return opts
diff --git a/lua/lsp/templates.lua b/lua/lsp/templates.lua
new file mode 100644
index 00000000..fbbc37f6
--- /dev/null
+++ b/lua/lsp/templates.lua
@@ -0,0 +1,98 @@
+local M = {}
+
+local Log = require "core.log"
+local utils = require "utils"
+local get_supported_filetypes = require("lsp.utils").get_supported_filetypes
+
+local ftplugin_dir = lvim.lsp.templates_dir
+
+local join_paths = _G.join_paths
+
+function M.remove_template_files()
+  -- remove any outdated files
+  for _, file in ipairs(vim.fn.glob(ftplugin_dir .. "/*.lua", 1, 1)) do
+    vim.fn.delete(file)
+  end
+end
+
+---Checks if a server is ignored by default because of a conflict
+---Only TSServer is enabled by default for the javascript-family
+---@param server_name string
+function M.is_ignored(server_name, filetypes)
+  --TODO: this is easy to be made configurable once stable
+  filetypes = filetypes or get_supported_filetypes(server_name)
+
+  if vim.tbl_contains(filetypes, "javascript") then
+    if server_name == "tsserver" then
+      return false
+    else
+      return true
+    end
+  end
+
+  local blacklist = {
+    "jedi_language_server",
+    "pylsp",
+    "sqlls",
+    "sqls",
+    "angularls",
+    "ansiblels",
+  }
+  return vim.tbl_contains(blacklist, server_name)
+end
+
+---Generates an ftplugin file based on the server_name in the selected directory
+---@param server_name string name of a valid language server, e.g. pyright, gopls, tsserver, etc.
+---@param dir string the full path to the desired directory
+function M.generate_ftplugin(server_name, dir)
+  -- we need to go through lspconfig to get the corresponding filetypes currently
+  local filetypes = get_supported_filetypes(server_name) or {}
+  if not filetypes then
+    return
+  end
+
+  if M.is_ignored(server_name, filetypes) then
+    return
+  end
+
+  -- print("got associated filetypes: " .. vim.inspect(filetypes))
+
+  for _, filetype in ipairs(filetypes) do
+    local filename = join_paths(dir, filetype .. ".lua")
+    local setup_cmd = string.format([[require("lsp.manager").setup(%q)]], server_name)
+    -- print("using setup_cmd: " .. setup_cmd)
+    -- overwrite the file completely
+    utils.write_file(filename, setup_cmd .. "\n", "a")
+  end
+end
+
+---Generates ftplugin files based on a list of server_names
+---The files are generated to a runtimepath: "$LUNARVIM_RUNTIME_DIR/site/after/ftplugin/template.lua"
+---@param servers_names table list of servers to be enabled. Will add all by default
+function M.generate_templates(servers_names)
+  servers_names = servers_names or {}
+
+  Log:debug "Templates installation in progress"
+
+  M.remove_template_files()
+
+  if vim.tbl_isempty(servers_names) then
+    local available_servers = require("nvim-lsp-installer.servers").get_available_servers()
+
+    for _, server in pairs(available_servers) do
+      table.insert(servers_names, server.name)
+    end
+  end
+
+  -- create the directory if it didn't exist
+  if not utils.is_directory(lvim.lsp.templates_dir) then
+    vim.fn.mkdir(ftplugin_dir, "p")
+  end
+
+  for _, server in ipairs(servers_names) do
+    M.generate_ftplugin(server, ftplugin_dir)
+  end
+  Log:debug "Templates installation is complete"
+end
+
+return M
diff --git a/lua/lsp/utils.lua b/lua/lsp/utils.lua
index 17b9c3bc..59003406 100644
--- a/lua/lsp/utils.lua
+++ b/lua/lsp/utils.lua
@@ -1,28 +1,62 @@
 local M = {}
 
+local tbl = require "utils.table"
+
 function M.is_client_active(name)
   local clients = vim.lsp.get_active_clients()
+  return tbl.find_first(clients, function(client)
+    return client.name == name
+  end)
+end
+
+function M.get_active_clients_by_ft(filetype)
+  local matches = {}
+  local clients = vim.lsp.get_active_clients()
   for _, client in pairs(clients) do
-    if client.name == name then
-      return true, client
+    local supported_filetypes = client.config.filetypes or {}
+    if client.name ~= "null-ls" and vim.tbl_contains(supported_filetypes, filetype) then
+      table.insert(matches, client)
     end
   end
-  return false
+  return matches
 end
 
--- FIXME: this should return a list instead
-function M.get_active_client_by_ft(filetype)
-  if not lvim.lang[filetype] or not lvim.lang[filetype].lsp then
-    return nil
+function M.get_client_capabilities(client_id)
+  if not client_id then
+    local buf_clients = vim.lsp.buf_get_clients()
+    for _, buf_client in ipairs(buf_clients) do
+      if buf_client.name ~= "null-ls" then
+        client_id = buf_client.id
+        break
+      end
+    end
+  end
+  if not client_id then
+    error "Unable to determine client_id"
+    return
   end
 
-  local clients = vim.lsp.get_active_clients()
-  for _, client in pairs(clients) do
-    if client.name == lvim.lang[filetype].lsp.provider then
-      return client
+  local client = vim.lsp.get_client_by_id(tonumber(client_id))
+
+  local enabled_caps = {}
+  for capability, status in pairs(client.resolved_capabilities) do
+    if status == true then
+      table.insert(enabled_caps, capability)
+    end
+  end
+
+  return enabled_caps
+end
+
+function M.get_supported_filetypes(server_name)
+  -- print("got filetypes query request for: " .. server_name)
+  local configs = require "lspconfig/configs"
+  pcall(require, ("lspconfig/" .. server_name))
+  for _, config in pairs(configs) do
+    if config.name == server_name then
+      return config.document_config.default_config.filetypes or {}
     end
   end
-  return nil
 end
 
 return M