#!/usr/bin/env bash

# Parameterize
PYTHON_VERSION=3.7.7
BUILDDIR=/tmp/electrum-build
PACKAGE=Electrum
GIT_REPO=https://github.com/spesmilo/electrum

export GCC_STRIP_BINARIES="1"


. $(dirname "$0")/../build_tools_util.sh


CONTRIB_OSX="$(dirname "$(realpath "$0")")"
CONTRIB="$CONTRIB_OSX/.."
ROOT_FOLDER="$CONTRIB/.."

src_dir=$(dirname "$0")
cd $src_dir/../..

VERSION=`git describe --tags --dirty --always`

which brew > /dev/null 2>&1 || fail "Please install brew from https://brew.sh/ to continue"
which xcodebuild > /dev/null 2>&1 || fail "Please install Xcode and xcode command line tools to continue"

# Code Signing: See https://developer.apple.com/library/archive/documentation/Security/Conceptual/CodeSigningGuide/Procedures/Procedures.html
if [ -n "$CODESIGN_CERT" ]; then
    # Test the identity is valid for signing by doing this hack. There is no other way to do this.
    cp -f /bin/ls ./CODESIGN_TEST
    codesign -s "$CODESIGN_CERT" --dryrun -f ./CODESIGN_TEST > /dev/null 2>&1
    res=$?
    rm -f ./CODESIGN_TEST
    if ((res)); then
        fail "Code signing identity \"$CODESIGN_CERT\" appears to be invalid."
    fi
    unset res
    info "Code signing enabled using identity \"$CODESIGN_CERT\""
else
    warn "Code signing DISABLED. Specify a valid macOS Developer identity installed on the system to enable signing."
fi


function DoCodeSignMaybe { # ARGS: infoName fileOrDirName
    infoName="$1"
    file="$2"
    deep=""
    if [ -z "$CODESIGN_CERT" ]; then
        # no cert -> we won't codesign
        return
    fi
    if [ -d "$file" ]; then
        deep="--deep"
    fi
    if [ -z "$infoName" ] || [ -z "$file" ] || [ ! -e "$file" ]; then
        fail "Argument error to internal function DoCodeSignMaybe()"
    fi
    hardened_arg="--entitlements=${CONTRIB_OSX}/entitlements.plist -o runtime"

    info "Code signing ${infoName}..."
    codesign -f -v $deep -s "$CODESIGN_CERT" $hardened_arg "$file" || fail "Could not code sign ${infoName}"
}


info "Installing Python $PYTHON_VERSION"
export PATH="~/.pyenv/bin:~/.pyenv/shims:~/Library/Python/3.7/bin:$PATH"
if [ -d "${HOME}/.pyenv" ]; then
  pyenv update
else
  curl -L https://raw.githubusercontent.com/pyenv/pyenv-installer/master/bin/pyenv-installer | bash > /dev/null 2>&1
fi
PYTHON_CONFIGURE_OPTS="--enable-framework" pyenv install -s $PYTHON_VERSION && \
pyenv global $PYTHON_VERSION || \
fail "Unable to use Python $PYTHON_VERSION"

info "Installing build dependencies"
python3 -m pip install --no-dependencies -Ir ./contrib/deterministic-build/requirements-mac-build.txt --user \
    || fail "Could not install build dependencies"

info "Using these versions for building $PACKAGE:"
sw_vers
python3 --version
echo -n "Pyinstaller "
pyinstaller --version

rm -rf ./dist

git submodule update --init

rm  -rf $BUILDDIR > /dev/null 2>&1
mkdir $BUILDDIR

info "generating locale"
(
    if ! which msgfmt > /dev/null 2>&1; then
        brew install gettext
        brew link --force gettext
    fi
    cd "$CONTRIB"/deterministic-build/electrum-locale
    for i in ./locale/*; do
        dir="$ROOT_FOLDER"/electrum/$i/LC_MESSAGES
        mkdir -p $dir
        msgfmt --output-file=$dir/electrum.mo $i/electrum.po || true
    done
) || fail "failed generating locale"


info "Downloading libusb..."
curl https://homebrew.bintray.com/bottles/libusb-1.0.23.high_sierra.bottle.tar.gz | \
tar xz --directory $BUILDDIR
cp $BUILDDIR/libusb/1.0.23/lib/libusb-1.0.dylib contrib/osx
echo "caea266f3fc3982adc55d6cb8d9bad10f6e61f0c24ce5901aa1804618e08e14d  contrib/osx/libusb-1.0.dylib" | \
    shasum -a 256 -c || fail "libusb checksum mismatched"

info "Preparing for building libsecp256k1"
brew install autoconf automake libtool
"$CONTRIB"/make_libsecp256k1.sh || fail "Could not build libsecp"
cp "$ROOT_FOLDER"/electrum/libsecp256k1.0.dylib contrib/osx

info "Building CalinsQRReader..."
d=contrib/osx/CalinsQRReader
pushd $d
rm -fr build
# prefer building using xcode ourselves. otherwise fallback to prebuilt binary
xcodebuild || cp -r prebuilt_qr build || fail "Could not build CalinsQRReader"
popd
DoCodeSignMaybe "CalinsQRReader.app" "${d}/build/Release/CalinsQRReader.app"


info "Installing requirements..."
python3 -m pip install --no-dependencies -Ir ./contrib/deterministic-build/requirements.txt --user \
    || fail "Could not install requirements"

info "Installing hardware wallet requirements..."
python3 -m pip install --no-dependencies -Ir ./contrib/deterministic-build/requirements-hw.txt --user \
    || fail "Could not install hardware wallet requirements"

info "Installing dependencies specific to binaries..."
python3 -m pip install --no-dependencies -Ir ./contrib/deterministic-build/requirements-binaries.txt --user \
    || fail "Could not install dependencies specific to binaries"

info "Building $PACKAGE..."
python3 -m pip install --no-dependencies --user . > /dev/null || fail "Could not build $PACKAGE"

info "Faking timestamps..."
for d in ~/Library/Python/ ~/.pyenv .; do
  pushd $d
  find . -exec touch -t '200101220000' {} +
  popd
done

info "Building binary"
APP_SIGN="$CODESIGN_CERT" pyinstaller --noconfirm --ascii --clean --name $VERSION contrib/osx/osx.spec || fail "Could not build binary"

info "Adding bitcoin URI types to Info.plist"
plutil -insert 'CFBundleURLTypes' \
	-xml '<array><dict> <key>CFBundleURLName</key> <string>bitcoin</string> <key>CFBundleURLSchemes</key> <array><string>bitcoin</string></array> </dict></array>' \
	-- dist/$PACKAGE.app/Contents/Info.plist \
	|| fail "Could not add keys to Info.plist. Make sure the program 'plutil' exists and is installed."

DoCodeSignMaybe "app bundle" "dist/${PACKAGE}.app"

if [ ! -z "$CODESIGN_CERT" ]; then
    if [ ! -z "$APPLE_ID_USER" ]; then
        info "Notarizing .app with Apple's central server..."
        "${CONTRIB_OSX}/notarize_app.sh" "dist/${PACKAGE}.app" || fail "Could not notarize binary."
    else
        warn "AppleID details not set! Skipping Apple notarization."
    fi
fi

info "Creating .DMG"
hdiutil create -fs HFS+ -volname $PACKAGE -srcfolder dist/$PACKAGE.app dist/electrum-$VERSION.dmg || fail "Could not create .DMG"

DoCodeSignMaybe ".DMG" "dist/electrum-${VERSION}.dmg"

if [ -z "$CODESIGN_CERT" ]; then
    warn "App was built successfully but was not code signed. Users may get security warnings from macOS."
    warn "Specify a valid code signing identity to enable code signing."
fi