From cecf188adc023e1b296af418e8059c8421dbb42c Mon Sep 17 00:00:00 2001
From: Daniil Tsivinsky <daniil@tsivinsky.com>
Date: Tue, 1 Feb 2022 22:51:02 +0300
Subject: [PATCH] Add <leader>dy mapping to yank diagnostic message (wip)

---
 config/nvim/lua/user/cmds.lua   | 19 +++++++++++++++++++
 config/nvim/lua/user/remaps.lua |  3 ++-
 config/nvim/lua/user/utils.lua  |  9 +++++++++
 3 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/config/nvim/lua/user/cmds.lua b/config/nvim/lua/user/cmds.lua
index 75aa8fc..34bfbc6 100644
--- a/config/nvim/lua/user/cmds.lua
+++ b/config/nvim/lua/user/cmds.lua
@@ -1,3 +1,5 @@
+local yank = require("user.utils").yank
+
 function open_terminal(vertically)
   vertically = vertically or false
 
@@ -7,3 +9,20 @@ function open_terminal(vertically)
     vim.cmd(":split term://bash")
   end
 end
+
+function copy_diagnostic_message()
+  local diagnostics = vim.lsp.diagnostic.get_line_diagnostics()
+
+  if #diagnostics == 0 then
+    print("No diagnostics to yank")
+    return
+  end
+
+  -- TODO: print all messages available and prompt which one to yank
+
+  local message = diagnostics[1].message
+
+  yank(message)
+
+  print("Diagnostic message was yanked")
+end
diff --git a/config/nvim/lua/user/remaps.lua b/config/nvim/lua/user/remaps.lua
index 4b1031e..d91b186 100644
--- a/config/nvim/lua/user/remaps.lua
+++ b/config/nvim/lua/user/remaps.lua
@@ -52,9 +52,10 @@ nmap("gd", ":lua vim.lsp.buf.definition()<CR>") -- g+d - Go to definition
 nmap("gr", ":lua vim.lsp.buf.references()<CR>") -- g+r - Show references
 nmap("K", ":lua vim.lsp.buf.hover()<CR>") -- Shift+k - Show documentation in hover window
 nmap("<F2>", ":lua vim.lsp.buf.rename()<CR>") -- F2 - Rename thing under the cursor
-nmap("<leader>d", ':lua vim.diagnostic.open_float(nil, {focus = false, scope = "cursor"})<CR>') -- Leader+d - show diagnostics in float window
 nmap("<leader>.", ":lua vim.lsp.buf.code_action()<CR>") -- Leader+. - show code actions to run
 vmap("<leader>.", ":lua vim.lsp.buf.range_code_action()<CR>") -- same as above but for visual mode
+nmap("<leader>dd", ':lua vim.diagnostic.open_float(nil, {focus = false, scope = "cursor"})<CR>') -- Leader+d - show diagnostics in float window
+nmap("<leader>dy", ":lua copy_diagnostic_message()<CR>") -- Leader+d+c - copy diagnostic message
 
 -- Git
 nmap("<leader>gg", ":G<CR>") -- Leader+g+g - open vim-fugitive window
diff --git a/config/nvim/lua/user/utils.lua b/config/nvim/lua/user/utils.lua
index 0edf583..393bb9a 100644
--- a/config/nvim/lua/user/utils.lua
+++ b/config/nvim/lua/user/utils.lua
@@ -38,4 +38,13 @@ M.list_includes_item = function(list, item)
   return false
 end
 
+M.yank = function(message)
+  if vim.fn.has("win32") == 1 then
+    os.execute("echo '" .. message .. "' | win32yank -i")
+  else
+    -- i use wayland, so there is no xclip for X11
+    os.execute("echo -n '" .. message .. "' | wl-copy")
+  end
+end
+
 return M