add automatic translation action (#6649)

Author: ali-fs

.github/workflows/sync_crowdin_translations.md

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+# Sync Crowdin translations
+
+This action will automatically extract strings from the binary-static repo and upload them to Crowdin. It will also check whether Crowdin has new translations available, and if so, it will automatically download these translations and create a PR to binary-static's `master` branch to merge them in.
+If there are new strings to translate, it will send a slack message to inform the translation team if there is TRANSLATIONS_SLACK_WEBHOOK available.
+
+Required GitHub secrets:
+
+- `PERSONAL_ACCESS_TOKEN`: (GitHub PAT) To allow the action to authenticate with Git for git operations.
+- `CROWDIN_API_KEY`: To allow us to download and upload new language files to and from Crowdin.
+- `TRANSLATIONS_SLACK_WEBHOOK`: (Optional) To allow send a slack message to inform the translation team in case new strings found.

.github/workflows/sync_crowdin_translations.yml

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+name: Sync Crowdin translations
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+
+jobs:
+  sync_crowdin_translations:
+    if: github.repository == 'binary-com/binary-static'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Setup node
+        uses: actions/setup-node@v2
+        with:
+          node-version: '12'
+
+      - name: Checkout master branch
+        uses: actions/checkout@v2
+        with:
+          repository: "binary-com/binary-static"
+          token: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
+
+      # In this step we're doing a couple things:
+      # - We generate a new messages.pot
+      # - We hash the newly generated messages.pot and compare it with the messages.pot on Crowdin.
+      # - We download the latest translation files from Crowdin, if there are new files, we create a PR.
+      - name: Generate and push to Crowdin
+        run: |
+          branch_name="binary_static_translations"
+
+          echo "Setting up Git identity"
+          git config --global user.name "DerivFE"
+          git config --global user.email "80095553+DerivFE@users.noreply.github.com"
+
+          echo "Installing Crowdin CLI"
+          sudo npm i -g @crowdin/cli
+          
+          echo "Installing project dependencies and building the project"
+          npm install
+          npm run build
+
+          echo "Checking out new branch [$branch_name]"
+          git checkout -b "$branch_name"
+
+
+
+          echo "Updating translations source file"          
+          last_messages_hash="$(git hash-object $(git rev-parse --show-toplevel)/src/translations/messages.pot)"
+          node ./scripts/render.js -t
+          current_messages_hash="$(git hash-object $(git rev-parse --show-toplevel)/src/translations/messages.pot)"
+          echo "- [crowdin]:   message.pot hash is: $last_messages_hash"
+          echo "- [generated]: message.pot hash is: $current_messages_hash"
+          
+          # We compare the generated messages.pot with the last messages.pot.
+          # Only send a Slack message and upload it to Crowdin if there were any changes made to messages.pot.
+          if [ "$last_messages_hash" != "$current_messages_hash" ]; then
+            echo "Hashes are different, uploading to Crowdin"
+            echo "Uploading new strings to Crowdin"
+            crowdin upload sources -T ${{ secrets.CROWDIN_API_KEY }}
+
+            # Send a message to Slack (granted we have a webhook secret).
+            # This check also allows a repo admin to disable the Slack message by removing the secret.
+            if [ -n "${{ secrets.TRANSLATIONS_SLACK_WEBHOOK }}" ]; then
+              echo "Sending message to Slack (#team_translations)"
+              curl -X POST -H 'Content-type: application/json' --data '{"text":"There are new or updated strings available for Binary.com (https://crowdin.com/project/binary-static)."}' ${{ secrets.TRANSLATIONS_SLACK_WEBHOOK }}
+            fi
+          fi
+
+
+          echo "Downloading translation files from Crowdin (*.po)"
+          crowdin download -T ${{ secrets.CROWDIN_API_KEY }}
+          echo "Updating javascript translation files (*.js)"
+          node ./scripts/render.js -j
+      
+        
+
+          if [ -z "$(git status --porcelain)" ]; then
+            echo "Found no new translation files that need to be merged with master. Not creating a PR."
+          else
+            echo "Found updated translation files that need to be merged with master. Creating a PR."
+
+            # Commit the newly downloaded files
+            cd $(git rev-parse --show-toplevel)
+            git add .
+            git commit -m "translations: 📚 sync translations with crowdin"
+            
+            # Force push to this branch in case a previous run created it.
+            git push --set-upstream origin "$branch_name" -f
+
+            sudo apt install gh
+            gh auth login --with-token <<< ${{ secrets.PERSONAL_ACCESS_TOKEN }}
+            gh pr close "$branch_name" || true
+            gh pr create --fill --base "master" --head "binary-com:$branch_name"
+
+            echo "Attempting to approve and merge the PR."
+            gh pr merge "$branch_name" -s
+            echo "**The translation PR has beed merged successfully.**"
+          fi