Migrate make_dfu_header to CLI (#12061)

* Migrate make_dfu_header to CLI

* lint fixes

* Update lib/python/qmk/cli/generate/dfu_header.py

Co-authored-by: Ryan <fauxpark@gmail.com>

* Rename object

Co-authored-by: Ryan <fauxpark@gmail.com>

2 files changed, 60 insertions, 0 deletions

diff --git a/lib/python/qmk/cli/generate/__init__.py b/lib/python/qmk/cli/generate/__init__.py
index bd75b044c5..f064649ac7 100644
--- a/lib/python/qmk/cli/generate/__init__.py
+++ b/lib/python/qmk/cli/generate/__init__.py
@@ -1,5 +1,6 @@
 from . import api
 from . import config_h
+from . import dfu_header
 from . import docs
 from . import info_json
 from . import layouts
diff --git a/lib/python/qmk/cli/generate/dfu_header.py b/lib/python/qmk/cli/generate/dfu_header.py
new file mode 100644
index 0000000000..6f958b3a3d
--- /dev/null
+++ b/lib/python/qmk/cli/generate/dfu_header.py
@@ -0,0 +1,59 @@
+"""Used by the make system to generate LUFA Keyboard.h from info.json
+"""
+from dotty_dict import dotty
+from milc import cli
+
+from qmk.decorators import automagic_keyboard
+from qmk.info import info_json
+from qmk.path import is_keyboard, normpath
+
+
+@cli.argument('-o', '--output', arg_only=True, type=normpath, help='File to write to')
+@cli.argument('-q', '--quiet', arg_only=True, action='store_true', help="Quiet mode, only output error messages")
+@cli.argument('-kb', '--keyboard', help='Keyboard to generate LUFA Keyboard.h for.')
+@cli.subcommand('Used by the make system to generate LUFA Keyboard.h from info.json', hidden=True)
+@automagic_keyboard
+def generate_dfu_header(cli):
+    """Generates the Keyboard.h file.
+    """
+    # Determine our keyboard(s)
+    if not cli.config.generate_dfu_header.keyboard:
+        cli.log.error('Missing parameter: --keyboard')
+        cli.subcommands['info'].print_help()
+        return False
+
+    if not is_keyboard(cli.config.generate_dfu_header.keyboard):
+        cli.log.error('Invalid keyboard: "%s"', cli.config.generate_dfu_header.keyboard)
+        return False
+
+    # Build the Keyboard.h file.
+    kb_info_json = dotty(info_json(cli.config.generate_dfu_header.keyboard))
+
+    keyboard_h_lines = ['/* This file was generated by `qmk generate-dfu-header`. Do not edit or copy.' ' */', '', '#pragma once']
+    keyboard_h_lines.append(f'#define MANUFACTURER {kb_info_json["manufacturer"]}')
+    keyboard_h_lines.append(f'#define PRODUCT {cli.config.generate_dfu_header.keyboard} Bootloader')
+
+    # Optional
+    if 'qmk_lufa_bootloader.esc_output' in kb_info_json:
+        keyboard_h_lines.append(f'#define QMK_ESC_OUTPUT {kb_info_json["qmk_lufa_bootloader.esc_output"]}')
+    if 'qmk_lufa_bootloader.esc_input' in kb_info_json:
+        keyboard_h_lines.append(f'#define QMK_ESC_INPUT {kb_info_json["qmk_lufa_bootloader.esc_input"]}')
+    if 'qmk_lufa_bootloader.led' in kb_info_json:
+        keyboard_h_lines.append(f'#define QMK_LED {kb_info_json["qmk_lufa_bootloader.led"]}')
+    if 'qmk_lufa_bootloader.speaker' in kb_info_json:
+        keyboard_h_lines.append(f'#define QMK_SPEAKER {kb_info_json["qmk_lufa_bootloader.speaker"]}')
+
+    # Show the results
+    keyboard_h = '\n'.join(keyboard_h_lines)
+
+    if cli.args.output:
+        cli.args.output.parent.mkdir(parents=True, exist_ok=True)
+        if cli.args.output.exists():
+            cli.args.output.replace(cli.args.output.parent / (cli.args.output.name + '.bak'))
+        cli.args.output.write_text(keyboard_h)
+
+        if not cli.args.quiet:
+            cli.log.info('Wrote Keyboard.h to %s.', cli.args.output)
+
+    else:
+        print(keyboard_h)