hephaestus/heph.nvim/plugin/heph.lua

--- heph.nvim plugin entry: register the `heph://` buffer autocmds and the
--- `:Heph` command. Loaded once by Neovim from `runtimepath/plugin/`.

if vim.g.loaded_heph then
  return
end
vim.g.loaded_heph = true

local grp = vim.api.nvim_create_augroup("heph", { clear = true })

-- `heph://node/<id>` buffers load and save through the daemon (tech-spec §8).
vim.api.nvim_create_autocmd("BufReadCmd", {
  group = grp,
  pattern = "heph://node/*",
  callback = function(ev)
    local ok, err = pcall(require("heph.node").read, ev.buf, ev.match)
    if not ok then
      vim.notify(tostring(err), vim.log.levels.ERROR)
    end
  end,
})

vim.api.nvim_create_autocmd("BufWriteCmd", {
  group = grp,
  pattern = "heph://node/*",
  callback = function(ev)
    local ok, err = pcall(require("heph.node").write, ev.buf, ev.match)
    if not ok then
      vim.notify(tostring(err), vim.log.levels.ERROR)
    end
  end,
})

-- Release the socket and stop any daemon this nvim spawned, cleanly, on exit.
vim.api.nvim_create_autocmd("VimLeavePre", {
  group = grp,
  callback = function()
    pcall(function()
      require("heph.rpc").close()
    end)
    pcall(function()
      require("heph.daemon").stop_spawned()
    end)
  end,
})

vim.api.nvim_create_user_command("Heph", function(opts)
  require("heph.command").run(opts)
end, {
  nargs = "*",
  desc = "hephaestus",
  complete = function(arglead, cmdline, cursorpos)
    return require("heph.command").complete(arglead, cmdline, cursorpos)
  end,
})