auto create MR on push into weblate-integration

.gitlab-ci.yml

@@ -249,3 +249,15 @@ update-prod:
     ACCESS_TOKEN: ${PROD_HELM_TOKEN}
   rules:
     - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH && $PROD_HELM_TOKEN != null
+
+# https://about.gitlab.com/blog/how-to-automatically-create-a-new-mr-on-gitlab-with-gitlab-ci/
+weblate-integration-auto-mr:
+  image: ${INFRA_IMAGE}
+  stage: publish
+  rules:
+    - if: $CI_COMMIT_BRANCH == "weblate-integration" && $AUTO_MR_TOKEN != null
+  script:
+    - HOST=${CI_PROJECT_URL} CI_PROJECT_ID=${CI_PROJECT_ID}
+      CI_COMMIT_REF_NAME=${CI_COMMIT_REF_NAME}
+      GITLAB_USER_ID=${GITLAB_USER_ID}
+      PRIVATE_TOKEN=${AUTO_MR_TOKEN} ./utils/autoMergeRequest.sh

utils/autoMergeRequest.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+# Extract the host where the server is running, and add the URL to the APIs
+[[ $HOST =~ ^https?://[^/]+ ]] && HOST="${BASH_REMATCH[0]}/api/v4/projects/"
+
+# Look which is the default branch
+TARGET_BRANCH=`curl --silent "${HOST}${CI_PROJECT_ID}" --header "PRIVATE-TOKEN:${PRIVATE_TOKEN}" | python3 -c "import sys, json; print(json.load(sys.stdin)['default_branch'])"`;
+
+# The description of our new MR, we want to remove the branch after the MR has
+# been closed
+BODY="{
+    \"id\": ${CI_PROJECT_ID},
+    \"source_branch\": \"${CI_COMMIT_REF_NAME}\",
+    \"target_branch\": \"${TARGET_BRANCH}\",
+    \"remove_source_branch\": true,
+    \"title\": \"WIP: ${CI_COMMIT_REF_NAME}\",
+    \"assignee_id\":\"${GITLAB_USER_ID}\"
+}";
+
+# Require a list of all the merge request and take a look if there is already
+# one with the same source branch
+LISTMR=`curl --silent "${HOST}${CI_PROJECT_ID}/merge_requests?state=opened" --header "PRIVATE-TOKEN:${PRIVATE_TOKEN}"`;
+COUNTBRANCHES=`echo ${LISTMR} | grep -o "\"source_branch\":\"${CI_COMMIT_REF_NAME}\"" | wc -l`;
+
+# No MR found, let's create a new one
+if [ ${COUNTBRANCHES} -eq "0" ]; then
+    curl -X POST "${HOST}${CI_PROJECT_ID}/merge_requests" \
+        --header "PRIVATE-TOKEN:${PRIVATE_TOKEN}" \
+        --header "Content-Type: application/json" \
+        --data "${BODY}";
+
+    echo "Opened a new merge request: WIP: ${CI_COMMIT_REF_NAME} and assigned to you";
+    exit;
+fi
+
+echo "No new merge request opened";