#!/usr/bin/env bash
# Copyright 2013 The Flutter Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Generates objc docs for Flutter iOS libraries.

set -e

if [[ $# -eq 0 ]]; then
   echo "Error: Argument specifying output directory required."
   exit 1
fi

# Move to the flutter checkout
SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
pushd "$SCRIPT_DIR/../../flutter"

FLUTTER_UMBRELLA_HEADER=$(find ../out -maxdepth 4 -type f -name Flutter.h | grep 'ios_' | head -n 1)
if [[ ! -f "$FLUTTER_UMBRELLA_HEADER" ]]
  then
      echo "Error: This script must be run at the root of the Flutter source tree with at least one built Flutter.framework in ../out/ios*/Flutter.framework."
      echo "Running from: $(pwd)"
      exit 1
fi

OUTPUT_DIR="$1/objectc_docs"
ZIP_DESTINATION="$1"
if [ "${OUTPUT_DIR:0:1}" != "/" ]
then
  ZIP_DESTINATION="$SCRIPT_DIR/../../$1"
  OUTPUT_DIR="$ZIP_DESTINATION/objectc_docs"
fi

# If GEM_HOME is set, prefer using its copy of jazzy.
# LUCI will put jazzy here instead of on the path.
if [[ -n "${GEM_HOME}" ]]
  then
    PATH="${GEM_HOME}/bin:$PATH"
fi

# Use iPhoneSimulator SDK
# See: https://github.com/realm/jazzy/issues/791
jazzy \
  --objc\
  --sdk iphonesimulator\
  --clean\
  --author Flutter Team\
  --author_url 'https://flutter.io'\
  --github_url 'https://github.com/flutter'\
  --github-file-prefix 'http://github.com/flutter/engine/blob/main'\
  --xcodebuild-arguments --objc,"$FLUTTER_UMBRELLA_HEADER",--,-x,objective-c,-isysroot,"$(xcrun --show-sdk-path --sdk iphonesimulator)",-I,"$(pwd)"\
  --module Flutter\
  --root-url https://api.flutter.dev/objc/\
  --output "$OUTPUT_DIR"

EXPECTED_CLASSES="FlutterAppDelegate.html
FlutterBasicMessageChannel.html
FlutterCallbackCache.html
FlutterCallbackInformation.html
FlutterDartProject.html
FlutterEngine.html
FlutterEngineGroup.html
FlutterEngineGroupOptions.html
FlutterError.html
FlutterEventChannel.html
FlutterHeadlessDartRunner.html
FlutterMethodCall.html
FlutterMethodChannel.html
FlutterPluginAppLifeCycleDelegate.html
FlutterStandardMessageCodec.html
FlutterStandardMethodCodec.html
FlutterStandardReader.html
FlutterStandardReaderWriter.html
FlutterStandardTypedData.html
FlutterStandardWriter.html
FlutterViewController.html"

ACTUAL_CLASSES=$(ls "$OUTPUT_DIR/Classes" | sort)

if [[ $EXPECTED_CLASSES != $ACTUAL_CLASSES ]]; then
  echo "Expected classes did not match actual classes"
  echo
  diff <(echo "$EXPECTED_CLASSES") <(echo "$ACTUAL_CLASSES")
  exit -1
fi

# Create the final zip file.
pushd $OUTPUT_DIR
zip -r "$ZIP_DESTINATION/ios-objcdoc.zip" .
popd