Add decorators for determining keyboard and keymap based on current directory (#8191)

* Use pathlib everywhere we can

* Improvements based on @erovia's feedback

* rework qmk compile and qmk flash to use pathlib

* style

* Remove the subcommand_name argument from find_keyboard_keymap()

* add experimental decorators

* Create decorators for finding keyboard and keymap based on current directory.

Decorators were inspired by @Erovia's brilliant work on the proof of concept.

1 files changed, 30 insertions, 17 deletions

diff --git a/lib/python/qmk/cli/flash.py b/lib/python/qmk/cli/flash.py
index f669c3cb7..f8497071e 100644
--- a/lib/python/qmk/cli/flash.py
+++ b/lib/python/qmk/cli/flash.py
@@ -6,9 +6,11 @@ A bootloader must be specified.
 import subprocess
 from argparse import FileType
 
-import qmk.path
 from milc import cli
-from qmk.commands import compile_configurator_json, create_make_command, find_keyboard_keymap, parse_configurator_json
+
+import qmk.path
+from qmk.decorators import automagic_keyboard, automagic_keymap
+from qmk.commands import compile_configurator_json, create_make_command, parse_configurator_json
 
 
 def print_bootloader_help():
@@ -28,12 +30,15 @@ def print_bootloader_help():
     cli.echo('For more info, visit https://docs.qmk.fm/#/flashing')
 
 
-@cli.argument('-bl', '--bootloader', default='flash', help='The flash command, corresponding to qmk\'s make options of bootloaders.')
 @cli.argument('filename', nargs='?', arg_only=True, type=FileType('r'), help='The configurator export JSON to compile.')
+@cli.argument('-b', '--bootloaders', action='store_true', help='List the available bootloaders.')
+@cli.argument('-bl', '--bootloader', default='flash', help='The flash command, corresponding to qmk\'s make options of bootloaders.')
 @cli.argument('-km', '--keymap', help='The keymap to build a firmware for. Use this if you dont have a configurator file. Ignored when a configurator file is supplied.')
 @cli.argument('-kb', '--keyboard', help='The keyboard to build a firmware for. Use this if you dont have a configurator file. Ignored when a configurator file is supplied.')
-@cli.argument('-b', '--bootloaders', action='store_true', help='List the available bootloaders.')
+@cli.argument('-n', '--dry-run', arg_only=True, action='store_true', help="Don't actually build, just show the make command to be run.")
 @cli.subcommand('QMK Flash.')
+@automagic_keyboard
+@automagic_keymap
 def flash(cli):
     """Compile and or flash QMK Firmware or keyboard/layout
 
@@ -42,12 +47,13 @@ def flash(cli):
 
     If no file is supplied, keymap and keyboard are expected.
 
-    If bootloader is omitted, the one according to the rules.mk will be used.
-
+    If bootloader is omitted the make system will use the configured bootloader for that keyboard.
     """
+    command = ''
+
     if cli.args.bootloaders:
         # Provide usage and list bootloaders
-        cli.echo('usage: qmk flash [-h] [-b] [-kb KEYBOARD] [-km KEYMAP] [-bl BOOTLOADER] [filename]')
+        cli.echo('usage: qmk flash [-h] [-b] [-n] [-kb KEYBOARD] [-km KEYMAP] [-bl BOOTLOADER] [filename]')
         print_bootloader_help()
         return False
 
@@ -60,16 +66,23 @@ def flash(cli):
         cli.log.info('Wrote keymap to {fg_cyan}%s/%s/keymap.c', keymap_path, user_keymap['keymap'])
 
     else:
-        # Perform the action the user specified
-        user_keyboard, user_keymap = find_keyboard_keymap()
-        if user_keyboard and user_keymap:
+        if cli.config.flash.keyboard and cli.config.flash.keymap:
             # Generate the make command for a specific keyboard/keymap.
-            command = create_make_command(user_keyboard, user_keymap, cli.args.bootloader)
+            command = create_make_command(cli.config.flash.keyboard, cli.config.flash.keymap, cli.args.bootloader)
 
-        else:
-            cli.log.error('You must supply a configurator export or both `--keyboard` and `--keymap`.')
-            cli.echo('usage: qmk flash [-h] [-b] [-kb KEYBOARD] [-km KEYMAP] [-bl BOOTLOADER] [filename]')
-            return False
+        elif not cli.config.flash.keyboard:
+            cli.log.error('Could not determine keyboard!')
+        elif not cli.config.flash.keymap:
+            cli.log.error('Could not determine keymap!')
 
-    cli.log.info('Flashing keymap with {fg_cyan}%s\n\n', ' '.join(command))
-    subprocess.run(command)
+    # Compile the firmware, if we're able to
+    if command:
+        cli.log.info('Compiling keymap with {fg_cyan}%s', ' '.join(command))
+        if not cli.args.dry_run:
+            cli.echo('\n')
+            subprocess.run(command)
+
+    else:
+        cli.log.error('You must supply a configurator export, both `--keyboard` and `--keymap`, or be in a directory for a keyboard or keymap.')
+        cli.echo('usage: qmk flash [-h] [-b] [-n] [-kb KEYBOARD] [-km KEYMAP] [-bl BOOTLOADER] [filename]')
+        return False