unified way how all platforms handle copy_files (#7614)

Co-authored-by: Tomasz Duda <tomaszduda23@gmai.com>

esphome/components/rp2040/__init__.py

@@ -17,7 +17,7 @@ from esphome.const import (
     PLATFORM_RP2040,
 )
 from esphome.core import CORE, EsphomeError, coroutine_with_priority
-from esphome.helpers import copy_file_if_changed, mkdir_p, write_file
+from esphome.helpers import copy_file_if_changed, mkdir_p, write_file, read_file
 
 from .const import KEY_BOARD, KEY_PIO_FILES, KEY_RP2040, rp2040_ns
 
@@ -230,11 +230,14 @@ def generate_pio_files() -> bool:
 
 
 # Called by writer.py
-def copy_files() -> bool:
+def copy_files():
     dir = os.path.dirname(__file__)
     post_build_file = os.path.join(dir, "post_build.py.script")
     copy_file_if_changed(
         post_build_file,
         CORE.relative_build_path("post_build.py"),
     )
-    return generate_pio_files()
+    if generate_pio_files():
+        path = CORE.relative_src_path("esphome.h")
+        content = read_file(path).rstrip("\n")
+        write_file(path, content + '\n#include "pio_includes.h"\n')

esphome/writer.py

@@ -1,3 +1,4 @@
+import importlib
 import logging
 import os
 from pathlib import Path
@@ -299,25 +300,13 @@ def copy_src_tree():
         CORE.relative_src_path("esphome", "core", "version.h"), generate_version_h()
     )
 
-    if CORE.is_esp32:
-        from esphome.components.esp32 import copy_files
-
+    platform = "esphome.components." + CORE.target_platform
+    try:
+        module = importlib.import_module(platform)
+        copy_files = getattr(module, "copy_files")
         copy_files()
-
-    elif CORE.is_esp8266:
-        from esphome.components.esp8266 import copy_files
-
-        copy_files()
-
-    elif CORE.is_rp2040:
-        from esphome.components.rp2040 import copy_files
-
-        (pio) = copy_files()
-        if pio:
-            write_file_if_changed(
-                CORE.relative_src_path("esphome.h"),
-                ESPHOME_H_FORMAT.format(include_s + '\n#include "pio_includes.h"'),
-            )
+    except AttributeError:
+        pass
 
 
 def generate_defines_h():