Created commands (#18)

* Created `Runner` command

* Remove unnesessary temp variable

* Created `AutoRunner` command

`AutoRunner` command executes the `Runner` command every time a file is saved.

* Updated formatting

* Fix descriptions

* Created `AutoRunnerStop` command

`AutoRunnerStop` - stops `AutoRunner` and closes its window

* Automatic formatting

* Added command description to readme

* Update table

Added lua command column to "Commands" table.

* Update function description

Specified that `autorun` can accept buffer number as an argument.

* Fix `autorun` function

When saving a file, now function now checks if `_terminal_windows` exists and call the last shell command, otherwise it calls the vim command.

* Moved `user_commands`

`user_commands` now are created when `setup()` is called.

* Fix README

Removed the line stating that the `setup()` function in optional.

README.md

@@ -3,6 +3,7 @@
 A customizable Neovim plugin to run code inside the editor
 
 ## Demo
+
 ![](./demo/demo.gif)
 
 ## Table of Contents
@@ -53,11 +54,24 @@ A customizable Neovim plugin to run code inside the editor
 
 ## Usage
 
+### Commands
+
+| Command           | lua                                | Description                              |
+|-------------------|------------------------------------|------------------------------------------|
+| `:Runner`         | `require('runner').run()`          | Runs code in buffer                      |
+| `:AutoRunner`     | `require('runner').autorun()`      | Runs code in buffer on every file save   |
+| `:AutoRunnerStop` | `require('runner').autorun_stop()` | Stops `AutoRunner` and closes the window |
+
+### Lua
+
   ```lua
   require('runner').run()
+  require('runner').autorun()
+  require('runner').autorun_stop()
 
   -- Can also be called with the buffer number where the code is:
   -- require('runner').run( <buffer_number> )
+  -- require('runner').autorun( <buffer_number> )
 
   -- To set a mapping
   vim.keymap.set('n', '<leader><space>', require('runner').run)
@@ -67,7 +81,7 @@ A customizable Neovim plugin to run code inside the editor
 
 #### `setup(options)`
 
-  Using this setup function is **optional**. Runner comes with the following defaults:
+  Runner comes with the following defaults:
 
   ```lua
   require('runner').setup({
@@ -177,6 +191,7 @@ A customizable Neovim plugin to run code inside the editor
       ['Custom'] = helpers.shell_handler('cargo ', true),
     }))
     ```
+
 ## Advanced handlers configurations
   
   For creating dynamic handlers like one for each `npm` or `cargo` script, you can write your own handler function that generates the other handlers, gives them to the choice handler, and runs it itself.
@@ -187,22 +202,26 @@ A customizable Neovim plugin to run code inside the editor
   This project uses [StyLua](https://github.com/JohnnyMorganz/StyLua) for enforcing code style, and has a [pre-commit](https://pre-commit.com/) hook setup for running it automatically. `runner.nvim` also has a Github Action that runs the linter on every Pull request. If a check doesn't pass on a specific Pull request, please lint the code and commit it again.
 
   For running them locally, you have to have them installed on your system:
+
 - [StyLua Installation](https://github.com/JohnnyMorganz/StyLua#installation)
 - [pre-commit Installation](https://pre-commit.com/#install)
 
-  #### Some useful commands:
+#### Some useful commands
 
 - Install the pre-commit hook
+
     ```bash
     pre-commit install
     ```
 
 - Check for StyLua errors
+
     ```bash
     stylua --check lua/
     ```
 
 - Fix StyLua errors
+
     ```bash
     stylua lua/
     ```

lua/runner/handlers/utils.lua

@@ -5,6 +5,7 @@ local config = require('runner.config')
 M._terminal_buffer = nil
 M._terminal_window = nil
 M._last_command = nil
+M._last_handler = nil
 
 M.create_buffer = function()
   if M._terminal_buffer then

lua/runner/init.lua

@@ -9,6 +9,18 @@ M._handlers = handlers
 
 M.setup = function(options)
   config.setup(options)
+
+  vim.api.nvim_create_user_command('Runner', function()
+    require('runner').run()
+  end, { desc = 'Run code inside the editor' })
+
+  vim.api.nvim_create_user_command('AutoRunner', function()
+    require('runner').autorun()
+  end, { desc = 'Execute `Runner` on a file save' })
+
+  vim.api.nvim_create_user_command('AutoRunnerStop', function()
+    require('runner').autorun_stop()
+  end, { desc = 'Stop `AutoRunner`' })
 end
 
 --- **Overrides** the handler for the specified filetype
@@ -28,29 +40,49 @@ M.set_handler = function(filetype, handler)
   M._handlers[filetype] = handler
 end
 
+--- @param bufnr integer?
 M.run = function(bufnr)
-  local buffer
   if bufnr == nil or bufnr == 0 then
-    buffer = vim.api.nvim_get_current_buf()
+    bufnr = vim.api.nvim_get_current_buf()
-  else
-    buffer = bufnr
   end
 
-  if buffer == utils._terminal_buffer then
+  if bufnr == utils._terminal_buffer then
     helpers.shell_handler(utils._last_command, false)()
     return
   end
 
-  local filetype = vim.filetype.match { buf = buffer }
+  local filetype = vim.filetype.match { buf = bufnr }
 
   local handler = M._handlers[filetype]
 
   if not handler then
-    print(string.format("No handler defined for filetype '%s'", filetype))
+    print('No handler defined for filetype ' .. filetype)
     return
   end
 
-  handler(buffer)
+  utils._last_handler = handler
+  handler(bufnr)
+end
+
+--- @param bufnr integer?
+M.autorun = function(bufnr)
+  M.run(bufnr)
+  vim.api.nvim_create_autocmd('BufWritePost', {
+    group = vim.api.nvim_create_augroup('AutoRunner', { clear = true }),
+    pattern = '*',
+    callback = function()
+      if utils._terminal_window then
+        helpers.shell_handler(utils._last_command, false)()
+      else
+        utils._last_handler(bufnr)
+      end
+    end,
+  })
+end
+
+M.autorun_stop = function()
+  vim.api.nvim_del_augroup_by_name('AutoRunner')
+  vim.api.nvim_win_close(utils._terminal_window, true)
 end
 
 return M