# Copyright 2020 The Actions Ecosystem Authors
# Modifications Copyright Materialize, Inc. and contributors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Portions of this file are derived from the README examples in the Action
# Slack Notifier project. The original source code was retrieved on
# January 5, 2022 from:
#
#     https://github.com/actions-ecosystem/action-slack-notifier/blob/fc778468d09c43a6f4d1b8cccaca59766656996a/README.md

# Send a notification to the #rnd-sql-council Slack channel when a change
# to the SQL parser or the system catalog schema is made.
#
# A notification is sent when all of these conditions are true:
#   * A ready-to-review PR is (re-)opened, or a PR is moved from draft
#     to ready-to-review.
#   * The PR modifies a file in 'src/sql-parser/','src/sql-lexer/', or 'src/catalog/src/builtin.rs'.

name: Slack SQL Council Notifications

on:
  pull_request_target:
    types:
      - opened
      - reopened
      - ready_for_review
    paths:
      - "src/sql-parser/**"
      - "src/sql-lexer/**"
      - "src/catalog/src/builtin.rs"
      - test/sqllogictest/mz_catalog_server_index_accounting.slt

jobs:
  notify:
    name: "Notify about changes to the SQL parser"
    runs-on: ubuntu-latest
    if: ${{ !github.event.pull_request.draft }}
    steps:
      - name: "Path filter"
        id: filter
        uses: dorny/paths-filter@v2
        with:
          filters: |
            sql-parser:
              - 'src/sql-parser/**'
              - 'src/sql-lexer/**'
              - '!**/Cargo.toml'
              - '!**/BUILD.bazel'
            system-catalog:
              - 'src/catalog/src/builtin.rs'
              - '!**/Cargo.toml'
              - '!**/BUILD.bazel'
            index-slt:
              - 'test/sqllogictest/mz_catalog_server_index_accounting.slt'
      - name: Checkout
        uses: actions/checkout@v4
      - name: "Check Retained Metric Changes"
        id: check-retain-metrics
        if: steps.filter.outputs.builtin-rs == 'true'
        run: |
          # Check for the text "is_retained_metrics" modified in builtin.rs in the pull request
          if git diff ${{ github.event.pull_request.base.sha }} -- 'src/catalog/src/builtin.rs' | grep -i 'is_retained_metrics'; then
            echo "changed=true" >> $GITHUB_OUTPUT
          fi
      - name: "Push to Slack"
        if: steps.filter.outputs.sql-parser == 'true' || steps.filter.outputs.system-catalog == 'true' || steps.filter.outputs.index-slt == 'true'
        uses: actions-ecosystem/action-slack-notifier@fc778468d09c43a6f4d1b8cccaca59766656996a
        with:
          slack_token: ${{ secrets.SLACK_TOKEN }}
          channel: rnd-sql-council
          custom_payload: |
            {
              "blocks": [
                {
                  "type": "section",
                  "text": {
                    "type": "mrkdwn",
                    "text": "A new ${{ steps.filter.outputs.sql-parser == 'true' && 'SQL parser' || 'system catalog' }} change is ready for review!"
                  }
                },
                {
                  "type": "section",
                  "text": {
                    "type": "mrkdwn",
                    "text": ${{ toJSON(format('• *PR:* <{0}|{1}>', github.event.pull_request.html_url, github.event.pull_request.title)) }}
                  }
                },
                {
                  "type": "section",
                  "text": {
                    "type": "mrkdwn",
                    "text": "• *Author:* <${{ github.event.pull_request.user.html_url }}|${{ github.event.pull_request.user.login }}>"
                  }
                }
              ]
            }