feat(hydra): add hydra-repl filetype integration

dots/.config/nvim/after/plugin/hydra.lua

@@ -0,0 +1,35 @@
+local hydra_repl = "hydra-repl"
+
+if not vim.fn.executable(hydra_repl) then
+  return
+end
+
+local function send(lines)
+  vim.system({ hydra_repl, table.concat(lines, "\n") })
+end
+
+local function get_paragraph(buf)
+  local start_ = vim.fn.search("^$", "bnW")
+  local end_ = vim.fn.search("^$", "nW") - 1
+  if end_ < vim.api.nvim_win_get_cursor(0)[1] then
+    end_ = vim.api.nvim_buf_line_count(buf)
+  end
+  return vim.api.nvim_buf_get_lines(buf, start_, end_, false)
+end
+
+local function get_selection(buf)
+  return vim.api.nvim_buf_get_lines(buf, vim.fn.line("'<") - 1, vim.fn.line("'>"), false)
+end
+
+vim.api.nvim_create_autocmd("FileType", {
+  pattern = "javascript",
+  callback = function(e)
+    if vim.fn.fnamemodify(vim.api.nvim_buf_get_name(e.buf), ":e") ~= "hydra" then
+      return
+    end
+
+    local buf = e.buf
+    vim.keymap.set("n", "<CR>", function() send(get_paragraph(buf)) end, { buffer = buf, desc = "hydra: send block" })
+    vim.keymap.set("v", "<CR>", function() send(get_selection(buf)) end, { buffer = buf, desc = "hydra: send selection" })
+  end,
+})

dots/.config/nvim/lua/ftdetect.lua

@@ -9,5 +9,6 @@ vim.filetype.add({
     ["%.env.*"] = "dotenv",
     ["%.pl$"] = "prolog",
     [".*.containerfile.*"] = "dockerfile",
+    ["%.hydra$"] = "javascript",
   },
 })