# Copyright 2025 The HuggingFace Inc. team. 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 workflow automatically labels issues based on their content.
name: Issue Labeler
on:
  # Trigger on new issues and edits to existing issues
  issues:
    types: [opened, edited]

permissions:
  contents: read
  issues: write

jobs:
  label-issue:
    name: Auto Label Issue
    runs-on: ubuntu-latest
    if: github.repository == 'huggingface/lerobot'
    steps:
      - uses: actions/github-script@v8
        with:
          script: |
            // Setup Input Text
            const body = (context.payload.issue.body || '');
            const title = (context.payload.issue.title || '');
            const cleanBody = body.replace(/```[\s\S]*?```/g, '');
            const text = `${title}\n${cleanBody}`.toLowerCase();
            const labelsToAdd = new Set();
            const matches = (re) => re.test(text);

            // Keyword Heuristics

            // Domain Specific
            if (matches(/\b(bug|error|issue|fault|crash|exception|\b/i)) labelsToAdd.add('bug');
            if (matches(/\b(feature|enhancement|improvement|support|implement|proposal)\b/i)) labelsToAdd.add('enhancement');
            if (matches(/\b(question|help|how to||clarify|explain|unclear)\b/i)) labelsToAdd.add('question');
            if (matches(/\b(maintenance|documentation|docs|readme|tutorial|guide|wiki)\b/i)) labelsToAdd.add('documentation');
            if (matches(/\b(example|script|sample|demo|notebook)s?\b/i)) labelsToAdd.add('examples');
            if (matches(/\b(datasets?|data loader|data augmentation|data preprocessing)\b/i)) labelsToAdd.add('dataset');
            if (matches(/\b(mujoco|isaac|simulation|sim)\b/i)) labelsToAdd.add('simulation');
            if (matches(/\b(train|training|loss|optimizer|backward|gradient|wandb|sac)\b/i)) labelsToAdd.add('training');
            if (matches(/\b(rerun|plot|video|render|visualiz|gif)/i)) labelsToAdd.add('visualization');
            if (matches(/\b(camera|realsense|lidar|depth|sensor|imu|microphone|rgbd)\b/i)) labelsToAdd.add('sensors');
            if (matches(/\b(aloha|koch|so-100|so100|mobile|teleop|manipulator|robots?)\b/i)) labelsToAdd.add('robots');
            if (matches(/\b(teleop|teleoperator|controller|leader|follower|joystick|gamepad)\b/i)) labelsToAdd.add('teleoperators');
            if (matches(/\b(policy|policies|p0licy)\b/i)) labelsToAdd.add('policies');
            if (matches(/\b(processors?|pipeline)\b/i)) labelsToAdd.add('processor');
            if (matches(/\b(eval|evaluate|evaluation|metrics?|score|benchmark)\b/i)) labelsToAdd.add('evaluation');

            // Infrastructure & Code Quality
            if (matches(/\b(tests?|pytest|unittest|failing test)\b/i)) labelsToAdd.add('tests');
            if (matches(/\b(ci|github actions|workflow|gha|actions?|pipeline)\b/i)) {
              labelsToAdd.add('CI');
              labelsToAdd.add('github_actions');
            }
            if (matches(/\b(perf|latency|throughput|fps|speed|performance)\b/i)) labelsToAdd.add('performance');
            if (matches(/\b(dependency|requirements|pip|conda|install error|importerror|package not found)\b/i)) labelsToAdd.add('dependencies');
            if (matches(/\b(python|pyproject|requirements(\.txt)?|pip install|typing error)\b/i)) labelsToAdd.add('python');

            // Documentation & Meta
            if (matches(/\b(doc|documentation|docs|readme|typo|how to)\b/i)) labelsToAdd.add('documentation');
            if (matches(/\b(refactor|cleanup|restructure|rename|modernize code)\b/i)) labelsToAdd.add('refactor');
            if (matches(/\b(release|changelog|version bump|cut a release|tag v)\b/i)) labelsToAdd.add('release');
            if (matches(/\b(breaking change|major change)\b/i)) labelsToAdd.add('breaking change');

            // Apply Labels
            const labels = Array.from(labelsToAdd).filter(Boolean);

            if (labels.length > 0) {
              console.log(`Adding labels: ${labels.join(', ')}`);
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                labels,
              });
            }