Allow rename with gopls when lsp is ready

lua/go/rename.lua

@@ -2,6 +2,16 @@
 local utils = require("go.utils")
 
 local gorename = "gorename"
+
+local lsprename = function(new_name)
+  if #new_name == 0 or new_name == vim.fn.expand("<cword>") then
+    return
+  end
+  local params = vim.lsp.util.make_position_params()
+  params.newName = new_name
+  vim.lsp.buf_request(0, "textDocument/rename", params)
+end
+
 local run = function(to_identifier, ...)
   require("go.install").install(gorename)
   local fname = vim.fn.expand("%:p") -- %:p:h ? %:p
@@ -21,6 +31,12 @@ local run = function(to_identifier, ...)
   to_identifier = to_identifier or vim.fn.input(prompt, old_identifier)
   local byte_offset = vim.fn.wordcount().cursor_bytes
 
+  local clients = vim.lsp.get_active_clients() or {}
+  if #clients > 0 then
+    -- TODO check gopls?
+    return lsprename(to_identifier)
+  end
+
   local offset = string.format("%s:#%i", fname, byte_offset)
 
   local setup = {gorename, "-offset", offset, "-to", to_identifier}
@@ -33,20 +49,19 @@ local run = function(to_identifier, ...)
   -- end
   --
   -- print(vim.inspect(setup))
-  local j =
-    vim.fn.jobstart(
-    setup,
-    {
-      on_stdout = function(jobid, data, event)
-        data = utils.handle_job_data(data)
-        if not data then return end
-        local result = vim.fn.json_decode(data)
-        if result.errors ~= nil or result.lines == nil or result["start"] == nil or result["start"]  == 0 then
-          print("failed to rename" .. vim.inspect(result))
-        end
-        print("renamed to " .. to_identifier)
+  local j = vim.fn.jobstart(setup, {
+    on_stdout = function(jobid, data, event)
+      data = utils.handle_job_data(data)
+      if not data then
+        return
+      end
+      -- local result = vim.fn.json_decode(data)
+      local result = vim.json.decode(data)
+      if result.errors ~= nil or result.lines == nil or result["start"] == nil or result["start"] == 0 then
+        print("failed to rename" .. vim.inspect(result))
       end
-    }
-  )
+      print("renamed to " .. to_identifier)
+    end
+  })
 end
 return {run = run}