From aaffa84ebb0d411eafe2347e2ee0424af1199219 Mon Sep 17 00:00:00 2001
From: Matsu <huhta.matias@gmail.com>
Date: Wed, 15 Sep 2021 19:31:51 +0300
Subject: [PATCH] feat: Remove version field if zero from codeaction calls
 (#738)

should fix code actions for jdtls

Co-authored-by: TJ DeVries <devries.timothyj@gmail.com>
---
 lua/telescope/builtin/lsp.lua | 75 ++++++++++++++++++++++++++++++-----
 1 file changed, 64 insertions(+), 11 deletions(-)

diff --git a/lua/telescope/builtin/lsp.lua b/lua/telescope/builtin/lsp.lua
index e5b183e..59cd1f9 100644
--- a/lua/telescope/builtin/lsp.lua
+++ b/lua/telescope/builtin/lsp.lua
@@ -217,6 +217,68 @@ lsp.code_actions = function(opts)
     }
   end
 
+  -- If the text document version is 0, set it to nil instead so that Neovim
+  -- won't refuse to update a buffer that it believes is newer than edits.
+  -- See: https://github.com/eclipse/eclipse.jdt.ls/issues/1695
+  -- Source:
+  -- https://github.com/neovim/nvim-lspconfig/blob/486f72a25ea2ee7f81648fdfd8999a155049e466/lua/lspconfig/jdtls.lua#L62
+  local function fix_zero_version(workspace_edit)
+    if workspace_edit and workspace_edit.documentChanges then
+      for _, change in pairs(workspace_edit.documentChanges) do
+        local text_document = change.textDocument
+        if text_document and text_document.version and text_document.version == 0 then
+          text_document.version = nil
+        end
+      end
+    end
+    return workspace_edit
+  end
+
+  --[[
+  -- actions is (Command | CodeAction)[] | null
+  -- CodeAction
+  --      title: String
+  --      kind?: CodeActionKind
+  --      diagnostics?: Diagnostic[]
+  --      isPreferred?: boolean
+  --      edit?: WorkspaceEdit
+  --      command?: Command
+  --
+  -- Command
+  --      title: String
+  --      command: String
+  --      arguments?: any[]
+  --]]
+  local transform_action = opts.transform_action
+    or function(action)
+      -- Remove 0 -version from LSP codeaction request payload.
+      -- Is only run on lsp codeactions which contain a comand or a arguments field
+      -- Fixed Java/jdtls compatibility with Telescope
+      -- See fix_zero_version commentary for more information
+      if action.command or action.arguments then
+        if action.command.command then
+          action.edit = fix_zero_version(action.command.arguments[1])
+        else
+          action.edit = fix_zero_version(action.arguments[1])
+        end
+      end
+      return action
+    end
+
+  local execute_action = opts.execute_action
+    or function(action)
+      if action.edit or type(action.command) == "table" then
+        if action.edit then
+          vim.lsp.util.apply_workspace_edit(action.edit)
+        end
+        if type(action.command) == "table" then
+          vim.lsp.buf.execute_command(action.command)
+        end
+      else
+        vim.lsp.buf.execute_command(action)
+      end
+    end
+
   pickers.new(opts, {
     prompt_title = "LSP Code Actions",
     finder = finders.new_table {
@@ -237,18 +299,9 @@ lsp.code_actions = function(opts)
       actions.select_default:replace(function()
         local selection = action_state.get_selected_entry()
         actions.close(prompt_bufnr)
-        local val = selection.value
+        local action = selection.value
 
-        if val.edit or type(val.command) == "table" then
-          if val.edit then
-            vim.lsp.util.apply_workspace_edit(val.edit)
-          end
-          if type(val.command) == "table" then
-            vim.lsp.buf.execute_command(val.command)
-          end
-        else
-          vim.lsp.buf.execute_command(val)
-        end
+        execute_action(transform_action(action))
       end)
 
       return true