Translation: weblate integration

* after each commit on the master branch:
  check if searx/translations/messages.pot must be updated, if yes:
  * merge commits from weblate
  * build & commit the messages.mo files
  * update & commit messages.pot

* every Friday, the translations from weblate are commited into the master branch

.github/workflows/integration.yml

@@ -102,32 +102,24 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v2
       with:
-        persist-credentials: false
+        fetch-depth: '0'
+        token: ${{ secrets.WEBLATE_GITHUB_TOKEN }}
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
         python-version: '3.9'
         architecture: 'x64'
+    - name: weblate & git setup
+      env:
+        WEBLATE_CONFIG: ${{ secrets.WEBLATE_CONFIG }}
+      run: |
+        mkdir -p ~/.config
+        echo "${WEBLATE_CONFIG}" > ~/.config/weblate
+        git config --global user.email "alex.searxng@al-f.net"
+        git config --global user.name "searxng-bot"
     - name: Update transations
       id: update
-      continue-on-error: true
       run: make V=1 ci.babel.update
-    - name: Open pull request
-      if: steps.update.outcome == 'success'
-      uses: peter-evans/create-pull-request@v3
-      with:
-        commit-message: Update translations (pot, po)
-        committer: searx-bot <noreply@github.com>
-        author: ${{ github.actor }} <${{ github.actor }}@users.noreply.github.com>
-        signoff: false
-        branch: update_translations_pot
-        delete-branch: true
-        draft: false
-        title: 'Update translations (pot, po)'
-        body: |
-          Update messages.pot and messages.po files
-        labels: |
-          translation
 
   dockers:
     name: Docker

.github/workflows/translations-update.yml

@@ -0,0 +1,34 @@
+name: "Update translations (weblate)"
+on:
+  schedule:
+    - cron: "05 07 * * 5"
+  workflow_dispatch:
+
+jobs:
+  babel:
+    name: Weblate
+    runs-on: ubuntu-20.04
+    if: ${{ github.repository_owner == 'searxng' && github.ref == 'refs/heads/master' }}
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: '0'
+        token: ${{ secrets.WEBLATE_GITHUB_TOKEN }}
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.9'
+        architecture: 'x64'
+    - name: weblate & git setup
+      env:
+        WEBLATE_CONFIG: ${{ secrets.WEBLATE_CONFIG }}
+      run: |
+        mkdir -p ~/.config
+        echo "${WEBLATE_CONFIG}" > ~/.config/weblate
+        git config --global user.email "alex.searxng@al-f.net"
+        git config --global user.name "searxng-bot"
+    - name: Merge and push transation updates
+      id: update
+      run: make V=1 weblate.merge.push.updates
+  

manage

@@ -126,6 +126,27 @@ babel.sha256sum() {
     grep "msgid" "searx/translations/messages.pot" | sort | sha256sum | cut -f1 -d ' '
 }
 
+weblate.merge.push.updates() {
+    (   set -e
+        pyenv.cmd wlc lock
+        if ! git remote get-url weblate; then
+            git remote add weblate https://weblate.bubu1.eu/git/searxng/searxng/
+        fi
+        git remote update weblate
+        git merge weblate/master
+        babel.compile
+        git add searx/translations
+        git commit -m "[translations] update messages.mo files"
+        git push
+    )
+    exitcode=$?
+    (   # make sure to always unlock weblate
+        set -e
+        pyenv.cmd wlc unlock
+    )
+    dump_return $exitcode
+}
+
 ci.babel.update() {
     local sha_before
     (   set -e
@@ -133,12 +154,27 @@ ci.babel.update() {
         babel.extract
         if [ "$(babel.sha256sum)" = "${sha_before}" ]; then
             build_msg BABEL 'no changes detected, exiting'
-            return 1
+            return 0
         fi
+
+        # call weblate.merge.push.updates right away
+        git stash push "searx/translations/messages.pot"
+        weblate.merge.push.updates babel.update
+
+        # then update messages.pot while weblate is locked
+        pyenv.cmd wlc lock
+        git stash pop
         babel.update
-        build_msg BABEL 'update done, edit .po files if required and run babel.compile'
+        git add searx/translations
+        git commit -m "[translations] update messages.pot and messages.po files"
+        git push
     )
-    dump_return $?
+    exitcode=$?
+    (   # make sure to always unlock weblate
+        set -e
+        pyenv.cmd wlc unlock
+    )
+    dump_return $exitcode
 }
 
 babel.extract() {