From d068c782329b54195a5e3f9b77bba0d322079110 Mon Sep 17 00:00:00 2001
From: Ahmed Kamal <ahmed@moon-i.com.au>
Date: Fri, 28 Jun 2024 22:18:43 +1000
Subject: [PATCH] feat(extra): add elixirls code actions

---
 lua/lazyvim/plugins/extras/lang/elixir.lua | 68 +++++++++++++++++++++-
 1 file changed, 67 insertions(+), 1 deletion(-)

diff --git a/lua/lazyvim/plugins/extras/lang/elixir.lua b/lua/lazyvim/plugins/extras/lang/elixir.lua
index d82e988e..a2c490c0 100644
--- a/lua/lazyvim/plugins/extras/lang/elixir.lua
+++ b/lua/lazyvim/plugins/extras/lang/elixir.lua
@@ -9,7 +9,73 @@ return {
     "neovim/nvim-lspconfig",
     opts = {
       servers = {
-        elixirls = {},
+        elixirls = {
+          keys = {
+            { "<leader>cp", ":ElixirToPipe<CR>", desc = "To Pipe" },
+            { "<leader>cP", ":ElixirFromPipe<CR>", desc = "From Pipe" },
+            { "<leader>ce", mode = { "v" }, ":ElixirExpandMacro<CR>", desc = "Expand Macro" },
+          },
+          on_attach = function(client, bufnr)
+            local manipulate_pipes = function(direction)
+              local get_cursor_position = function()
+                local rowcol = vim.api.nvim_win_get_cursor(0)
+                local row = rowcol[1] - 1
+                local col = rowcol[2]
+                return row, col
+              end
+
+              local row, col = get_cursor_position()
+              client.request_sync("workspace/executeCommand", {
+                command = "manipulatePipes:serverid",
+                arguments = { direction, "file://" .. vim.api.nvim_buf_get_name(0), row, col },
+              }, nil, 0)
+            end
+
+            vim.api.nvim_buf_create_user_command(bufnr, "ElixirFromPipe", function()
+              manipulate_pipes("fromPipe")
+            end, {})
+            vim.api.nvim_buf_create_user_command(bufnr, "ElixirToPipe", function()
+              manipulate_pipes("toPipe")
+            end, {})
+
+            vim.api.nvim_buf_create_user_command(bufnr, "ElixirExpandMacro", function()
+              local params = vim.lsp.util.make_given_range_params()
+
+              local text = vim.api.nvim_buf_get_text(
+                0,
+                params.range.start.line,
+                params.range.start.character,
+                params.range["end"].line,
+                params.range["end"].character,
+                {}
+              )
+
+              local resp = client.request_sync("workspace/executeCommand", {
+                command = "expandMacro:serverid",
+                arguments = { params.textDocument.uri, vim.fn.join(text, "\n"), params.range.start.line },
+              }, nil, 0)
+
+              local content = {}
+              if resp["result"] then
+                for k, v in pairs(resp.result) do
+                  vim.list_extend(content, { "# " .. k, "" })
+                  vim.list_extend(content, vim.split(v, "\n"))
+                end
+              else
+                table.insert(content, "Error")
+              end
+
+              vim.schedule(function()
+                local bufnr_floating, _ = vim.lsp.util.open_floating_preview(
+                  vim.lsp.util.trim_empty_lines(content),
+                  "elixir",
+                  { border = "single" }
+                )
+                vim.api.nvim_buf_set_option(bufnr_floating, "filetype", "elixir")
+              end)
+            end, { range = true })
+          end,
+        },
       },
     },
   },