refactor: enable automatic iOS builds (#209)

* refactor: enable automatic iOS builds

Part of https://github.com/ooni/probe/issues/1335

* fix: go mod tidy

internal/engine/.github/workflows/ios.yml

@@ -1,18 +0,0 @@
-name: ios
-on:
-  push:
-    branches:
-      - mobile-staging
-      - 'release/**'
-jobs:
-  test:
-    runs-on: macos-latest
-    steps:
-      - uses: actions/setup-go@v1
-        with:
-          go-version: "1.14"
-      - uses: actions/checkout@v2
-      - run: ./build-ios.bash
-      - run: ./publish-ios.bash
-        env:
-          BINTRAY_API_KEY: ${{ secrets.BINTRAY_API_KEY }}

internal/engine/build-ios.bash

@@ -1,11 +0,0 @@
-#!/bin/bash
-set -e
-topdir=$(cd $(dirname $0) && pwd -P)
-set -x
-export PATH=$(go env GOPATH)/bin:$PATH
-export GO111MODULE=off
-go get -u golang.org/x/mobile/cmd/gomobile
-gomobile init
-export GO111MODULE=on
-output=MOBILE/ios/oonimkall.framework
-gomobile bind -target=ios -o $output -ldflags="-s -w" ./oonimkall

internal/engine/publish-ios.bash

@@ -1,23 +0,0 @@
-#!/bin/bash
-set -e
-pkgname=oonimkall
-version=$(date -u +%Y.%m.%d-%H%M%S)
-baseurl=https://api.bintray.com/content/ooni/ios/$pkgname/$version
-framework=./MOBILE/ios/$pkgname.framework
-frameworkzip=./MOBILE/ios/$pkgname.framework.zip
-podspecfile=./MOBILE/ios/$pkgname.podspec
-podspectemplate=./MOBILE/template.podspec
-user=bassosimone
-(cd ./MOBILE/ios && rm -f $pkgname.framework.zip && zip -yr $pkgname.framework.zip $pkgname.framework)
-cat $podspectemplate|sed "s/@VERSION@/$version/g" > $podspecfile
-if [ -z $BINTRAY_API_KEY ]; then
-    echo "FATAL: missing BINTRAY_API_KEY variable" 1>&2
-    exit 1
-fi
-# We currently publish the mobile-staging branch. To cleanup we can fetch all the versions using
-# the <curl -s $user:$BINTRAY_API_KEY https://api.bintray.com/packages/ooni/android/oonimkall>
-# query, which returns a list of versions. From such list, we can delete the versions we
-# don't need using <DELETE /packages/:subject/:repo/:package/versions/:version>.
-curl -sT $frameworkzip -u $user:$BINTRAY_API_KEY $baseurl/$pkgname-$version.framework.zip?publish=1 >/dev/null
-curl -sT $podspecfile -u $user:$BINTRAY_API_KEY $baseurl/$pkgname-$version.podspec?publish=1 >/dev/null
-echo "pod 'oonimkall', :podspec => 'https://dl.bintray.com/ooni/ios/$pkgname-$version.podspec'"