Fist commit

scripts/embed_ui.py

@@ -0,0 +1,96 @@
+Import("env")  # noqa: F821
+
+from pathlib import Path
+import hashlib
+import shutil
+import subprocess
+
+
+project_dir = Path(env.subst("$PROJECT_DIR"))  # noqa: F821
+ui_dir = project_dir / "ui"
+generated_dir = project_dir / "src" / "generated"
+generated_dir.mkdir(parents=True, exist_ok=True)
+
+npm = shutil.which("npm")
+if npm and (ui_dir / "node_modules").is_dir():
+    subprocess.run([npm, "run", "build"], cwd=ui_dir, check=True)
+
+assets = {
+    "indexHtml": ui_dir / "dist" / "index.html",
+    "appCss": ui_dir / "dist" / "styles.min.css",
+    "appJs": ui_dir / "dist" / "app.min.js",
+}
+if not all(path.is_file() for path in assets.values()):
+    assets = {
+        "indexHtml": ui_dir / "index.html",
+        "appCss": ui_dir / "styles.css",
+        "appJs": ui_dir / "app.js",
+    }
+
+missing = [str(path) for path in assets.values() if not path.is_file()]
+if missing:
+    raise SystemExit(
+        "Missing UI assets: " + ", ".join(missing)
+    )
+
+
+def emit_array(name, data):
+    lines = [f"const char {name}[] PROGMEM = {{"]
+    for offset in range(0, len(data), 16):
+        chunk = data[offset : offset + 16]
+        values = ", ".join(f"0x{value:02X}" for value in chunk)
+        lines.append(f"  {values},")
+    lines.append("  0x00")
+    lines.append("};")
+    return "\n".join(lines)
+
+
+def emit_length(name, data):
+    return f"const std::size_t {name}Length = {len(data)}U;"
+
+
+header_lines = [
+    "#pragma once",
+    "",
+    "#include <Arduino.h>",
+    "#include <pgmspace.h>",
+    "",
+    "#include <cstddef>",
+    "",
+]
+source_lines = [
+    "// Generated by scripts/embed_ui.py. Do not edit manually.",
+    "#include \"UiAssets.h\"",
+    "",
+    "#include <cstddef>",
+    "",
+]
+
+for name, path in assets.items():
+    data = path.read_bytes()
+    digest = hashlib.sha256(data).hexdigest()
+    header_lines.append(f"extern const char {name}[] PROGMEM;")
+    header_lines.append(f"extern const std::size_t {name}Length;")
+    header_lines.append(f"extern const char {name}Sha256[] PROGMEM;")
+    source_lines.extend(
+        [
+            emit_array(name, data),
+            emit_length(name, data),
+            f'const char {name}Sha256[] PROGMEM = "{digest}";',
+            "",
+        ]
+    )
+
+def write_if_changed(path, content):
+    if path.is_file() and path.read_text(encoding="utf-8") == content:
+        return
+    path.write_text(content, encoding="utf-8")
+
+
+write_if_changed(generated_dir / "UiAssets.h", "\n".join(header_lines) + "\n")
+write_if_changed(generated_dir / "UiAssets.cpp", "\n".join(source_lines) + "\n")
+
+print("Embedded UI assets:")
+for name, path in assets.items():
+    data = path.read_bytes()
+    print(f"  {name}: {path.name} ({len(data)} bytes)")