#
# Copyright (c) 2025 Huawei Technologies Co., Ltd. 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.
# This file is a part of the vllm-ascend project.
#

name: 'Parse nightly trigger'

on:
  workflow_call:
    inputs:
      runner:
        required: false
        type: string
        default: linux-aarch64-a2b3-0
    outputs:
      run:
        description: "Whether nightly tests should run"
        value: ${{ jobs.parse.outputs.run }}
      filter:
        description: "Comma-wrapped test name filter (e.g. ',name1,name2,'), or 'all'"
        value: ${{ jobs.parse.outputs.filter }}
      ref:
        description: "The vllm-ascend ref (commit SHA for PRs, branch/tag name otherwise)"
        value: ${{ jobs.parse.outputs.ref }}

jobs:
  parse:
    name: Parse trigger and determine test scope
    runs-on: ${{ inputs.runner }}
    outputs:
      run: ${{ steps.parse.outputs.run }}
      filter: ${{ steps.parse.outputs.filter }}
      ref: ${{ steps.parse.outputs.ref }}
    steps:
      - name: Parse trigger
        id: parse
        uses: actions/github-script@v7
        with:
          script: |
            const eventName = context.eventName;

            function parseNightlyComment(body) {
              if (!body) return null;
              const match = body.trim().match(/^\/nightly(?:\s+(.+))?$/m);
              if (!match) return null;
              const args = (match[1] || '').trim();
              if (!args || args === 'all') return 'all';
              // Wrap with commas for exact-name matching: ",name1,name2,"
              return ',' + args.split(/\s+/).join(',') + ',';
            }

            function getRef() {
              if (eventName === 'pull_request') {
                return context.payload.pull_request.head.sha;
              }
              return (context.ref || '').replace(/^refs\/(heads|tags)\//, '') || 'main';
            }

            core.setOutput('ref', getRef());

            // 1. schedule / workflow_dispatch: run all tests with pre-built image
            if (eventName === 'schedule' || eventName === 'workflow_dispatch') {
              core.setOutput('run', 'true');
              core.setOutput('filter', 'all');
              return;
            }

            // 2. pull_request (labeled / synchronize)
            if (eventName === 'pull_request') {
              const labels = context.payload.pull_request.labels.map(l => l.name);
              if (!labels.includes('nightly-test')) {
                core.setOutput('run', 'false');
                core.setOutput('filter', '');
                return;
              }
              // Search comments for latest /nightly command
              const prNumber = context.payload.pull_request.number;
              const comments = await github.paginate(github.rest.issues.listComments, {
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: prNumber,
                per_page: 100,
              });
              let filter = null;
              for (let i = comments.length - 1; i >= 0; i--) {
                const result = parseNightlyComment(comments[i].body);
                if (result !== null) { filter = result; break; }
              }
              // No /nightly comment found: do not run any tests
              if (filter === null) {
                core.info('nightly-test label present but no /nightly comment found; skipping.');
                core.setOutput('run', 'false');
                core.setOutput('filter', '');
                return;
              }
              core.setOutput('run', 'true');
              core.setOutput('filter', filter);
              return;
            }

            // Fallback
            core.setOutput('run', 'false');
            core.setOutput('filter', '');