From 87f1eb69b1b7b7c93ef4d72a2dc8ded850b553fb Mon Sep 17 00:00:00 2001
From: Ramon Roche <mrpollo@gmail.com>
Date: Fri, 2 May 2025 15:10:12 -0700
Subject: [PATCH] tools: generate & check failsafe web metadata

Signed-off-by: Ramon Roche <mrpollo@gmail.com>
---
 Tools/ci/metadata_failsafe_web.sh | 112 ++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100755 Tools/ci/metadata_failsafe_web.sh

diff --git a/Tools/ci/metadata_failsafe_web.sh b/Tools/ci/metadata_failsafe_web.sh
new file mode 100755
index 0000000000..0cb4a5bca5
--- /dev/null
+++ b/Tools/ci/metadata_failsafe_web.sh
@@ -0,0 +1,112 @@
+#!/usr/bin/env bash
+#
+# metadata_failsafe_web.sh — build and sync failsafe webapp metadata files
+#
+# Usage:
+#   Tools/ci/metadata_failsafe_web.sh [--test-only] [--debug]
+#
+# Options:
+#   --test-only   Run build and comparison; exit 1 if diffs found, without copying files
+#   --debug       Show full build output and debug info for file comparisons and EMSDK install
+#
+set -euo pipefail
+shopt -s nullglob
+
+# Parse flags
+test_only=false
+debug=false
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --test-only) test_only=true; shift ;;
+    --debug)     debug=true; shift ;;
+    *) echo "Usage: $0 [--test-only] [--debug]"; exit 2 ;;
+  esac
+done
+
+# Paths and commands
+build_cmd="make failsafe_web"
+src_dir="build/px4_sitl_default_failsafe_web"
+dest_dir="docs/public/config/failsafe"
+
+# Ensure Emscripten SDK is available
+if ! command -v emcc >/dev/null 2>&1; then
+  echo "🔧 Emscripten not found. Ensuring EMSDK is installed."
+  # Clone SDK only if not already present
+  if [ ! -d "_emscripten_sdk" ]; then
+    if [ "$debug" = true ]; then
+      git clone https://github.com/emscripten-core/emsdk.git _emscripten_sdk
+    else
+      git clone https://github.com/emscripten-core/emsdk.git _emscripten_sdk > /dev/null 2>&1
+    fi
+  fi
+  pushd _emscripten_sdk >/dev/null
+  if [ "$debug" = true ]; then
+    ./emsdk install latest
+    ./emsdk activate latest
+  else
+    ./emsdk install latest > /dev/null 2>&1
+    ./emsdk activate latest > /dev/null 2>&1
+  fi
+  popd >/dev/null
+  # Load environment into current shell
+  if [ "$debug" = true ]; then
+    # shellcheck source=/dev/null
+    . ./_emscripten_sdk/emsdk_env.sh
+  else
+    # shellcheck source=/dev/null
+    . ./_emscripten_sdk/emsdk_env.sh > /dev/null 2>&1
+  fi
+fi
+
+# Build step
+if [ "$debug" = true ]; then
+  echo "🔧 Running build: $build_cmd"
+  $build_cmd
+else
+  echo "🔧 Running build"
+  $build_cmd > /dev/null 2>&1
+fi
+
+# Gather built files
+src_files=("$src_dir"/*.{js,wasm,json})
+if [ ${#src_files[@]} -eq 0 ]; then
+  echo "❌ No generated files found in $src_dir. Build failed or path wrong."
+  exit 1
+fi
+
+# Prepare destination
+echo "🔍 Checking failsafe web metadata"
+mkdir -p "$dest_dir"
+
+changed=()
+for src in "${src_files[@]}"; do
+  name=$(basename "$src")
+  dst="$dest_dir/$name"
+
+  if [[ ! -f "$dst" ]]; then
+    [ "$debug" = true ] && echo "DEBUG: missing $dst"
+    changed+=("$name")
+  elif ! cmp -s "$src" "$dst"; then
+    [ "$debug" = true ] && echo "DEBUG: cmp -s '$src' '$dst'; echo \$?"
+    changed+=("$name")
+  fi
+done
+
+if [ ${#changed[@]} -eq 0 ]; then
+  echo "✅ All failsafe web metadata files are in sync."
+  exit 0
+fi
+
+echo "⚠️ Detected updates in:"
+for f in "${changed[@]}"; do echo "  - $f"; done
+
+if [ "$test_only" = true ]; then
+  echo "🚨 Failsafe web metadata needs update; rerun without --test-only to apply."
+  exit 1
+fi
+
+echo "📂 Copying updated files"
+for f in "${changed[@]}"; do cp -v "$src_dir/$f" "$dest_dir/$f"; done
+
+echo "🚨 Failsafe web metadata updated; please commit changes."
+exit 1