name: Update GitHub Health Dashboard

# Trigger configuration
on:
  # Run daily at midnight UTC
  schedule:
    - cron: '0 0 * * *'
  
  # Allow manual triggering from GitHub UI
  workflow_dispatch:

# Define permissions for the GITHUB_TOKEN
permissions:
  # Required to read repository contents
  contents: read
  # Required to read issues and PRs
  issues: read
  pull-requests: read
  # Required to update discussions
  discussions: write

jobs:
  update-dashboard:
    name: 'Update Health Dashboard'
    runs-on: ubuntu-latest
    if: github.repository == 'aaif-goose/goose'
    
    steps:
      - name: 'Download previous metrics'
        uses: dawidd6/action-download-artifact@b6e2e70617bc3265edd6dab6c906732b2f1ae151  # v21
        with:
          name: health-metrics
          path: .
          workflow: update-health-dashboard.yml
          if_no_artifact_found: ignore
        
      - name: 'Update Dashboard'
        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3  # v9.0.0
        with:
          github-token: ${{ secrets.HEALTH_DASHBOARD_TOKEN }}
          script: |
            const owner = context.repo.owner;
            const repo = context.repo.repo;
            const discussionNumber = 5285;

            console.log(`Fetching health metrics for ${owner}/${repo}`);

            // Fetch ALL open issues with pagination
            let allOpenIssues = [];
            let page = 1;
            let hasMore = true;
            
            while (hasMore) {
              const { data: pageIssues } = await github.rest.issues.listForRepo({
                owner,
                repo,
                state: 'open',
                per_page: 100,
                page: page
              });
              
              allOpenIssues = allOpenIssues.concat(pageIssues);
              hasMore = pageIssues.length === 100;
              page++;
            }
            
            console.log(`Fetched ${allOpenIssues.length} total open items (issues + PRs)`);

            // Filter out PRs (issues API includes PRs)
            const issues = allOpenIssues.filter(issue => !issue.pull_request);
            const totalOpenIssues = issues.length;
            console.log(`Found ${totalOpenIssues} open issues (excluding PRs)`);

            // Count issues without labels (recent ones)
            const issuesWithoutLabels = issues.filter(issue => issue.labels.length === 0);

            // Count issues by specific labels
            const labelCounts = {};
            const targetLabels = ['p0', 'p1', 'compaction', 'windows', 'provider', 'mcp', 'linux'];
            
            targetLabels.forEach(label => {
              labelCounts[label] = issues.filter(issue => 
                issue.labels.some(l => l.name === label)
              ).length;
            });

            // Fetch open PRs
            const { data: openPRs } = await github.rest.pulls.list({
              owner,
              repo,
              state: 'open',
              per_page: 100
            });

            const totalOpenPRs = openPRs.length;

            // Load previous metrics for trend calculation
            const fs = require('fs');
            let previousMetrics = null;
            let historyData = { history: [] };
            
            try {
              if (fs.existsSync('health-metrics.json')) {
                const fileContent = fs.readFileSync('health-metrics.json', 'utf8');
                historyData = JSON.parse(fileContent);
                console.log(`Loaded ${historyData.history.length} historical data points`);
                
                // Get the most recent metrics for comparison
                if (historyData.history.length > 0) {
                  previousMetrics = historyData.history[historyData.history.length - 1];
                  console.log(`Previous metrics from ${previousMetrics.date}`);
                }
              }
            } catch (error) {
              console.log('No previous metrics found or error loading:', error.message);
            }

            // Create current metrics entry
            const currentMetrics = {
              date: new Date().toISOString().split('T')[0],
              timestamp: new Date().toISOString(),
              issues: {
                total: totalOpenIssues,
                no_labels: issuesWithoutLabels.length,
                by_label: labelCounts
              },
              prs: totalOpenPRs
            };

            // Add current metrics to history
            historyData.history.push(currentMetrics);
            
            // Keep only last 90 days of data
            const ninetyDaysAgo = new Date();
            ninetyDaysAgo.setDate(ninetyDaysAgo.getDate() - 90);
            historyData.history = historyData.history.filter(entry => 
              new Date(entry.date) >= ninetyDaysAgo
            );
            
            console.log(`History now contains ${historyData.history.length} data points`);

            // Calculate trend indicators
            const getTrend = (current, previous) => {
              if (!previous) return '';
              const diff = current - previous;
              if (diff === 0) return '';
              const arrow = diff < 0 ? '↓' : '↑';
              return ' ' + arrow + ' from ' + previous;
            };

            const issuesTrend = previousMetrics ? getTrend(totalOpenIssues, previousMetrics.issues.total) : '';
            const noLabelsTrend = previousMetrics ? getTrend(issuesWithoutLabels.length, previousMetrics.issues.no_labels) : '';
            const prsTrend = previousMetrics ? getTrend(totalOpenPRs, previousMetrics.prs) : '';

            // Save updated metrics to file
            fs.writeFileSync('health-metrics.json', JSON.stringify(historyData, null, 2));
            console.log('Saved updated metrics to health-metrics.json');

            // Format the dashboard markdown
            const timestamp = new Date().toUTCString();
            const formattedDate = new Date().toLocaleDateString('en-US', { month: 'short', day: 'numeric', year: 'numeric' });
            
            const dashboardBody = '# GitHub Health\n\n' +
              '**Updated:** ' + formattedDate + '\n\n' +
              '## Issues\n\n' +
              '**Open:** ' + totalOpenIssues + issuesTrend + '\n\n' +
              '**No labels:** ' + issuesWithoutLabels.length + ' (these are recent)' + noLabelsTrend + '\n\n' +
              '### Label Breakdown\n\n' +
              '| Label | Count |\n' +
              '|-------|-------|\n' +
              '| [P0](https://github.com/' + owner + '/' + repo + '/labels/p0) | ' + (labelCounts['p0'] || 0) + ' |\n' +
              '| [P1](https://github.com/' + owner + '/' + repo + '/labels/p1) | ' + (labelCounts['p1'] || 0) + ' |\n' +
              '| [Compaction](https://github.com/' + owner + '/' + repo + '/labels/compaction) | ' + (labelCounts['compaction'] || 0) + ' |\n' +
              '| [Windows](https://github.com/' + owner + '/' + repo + '/labels/windows) | ' + (labelCounts['windows'] || 0) + ' |\n' +
              '| [Provider](https://github.com/' + owner + '/' + repo + '/labels/provider) | ' + (labelCounts['provider'] || 0) + ' |\n' +
              '| [MCP](https://github.com/' + owner + '/' + repo + '/labels/mcp) | ' + (labelCounts['mcp'] || 0) + ' |\n' +
              '| [Linux](https://github.com/' + owner + '/' + repo + '/labels/linux) | ' + (labelCounts['linux'] || 0) + ' |\n\n' +
              '## Open PRs\n\n' +
              '**Total:** ' + totalOpenPRs + '\n\n' +
              '---\n\n' +
              '*Last updated: ' + timestamp + '*\n' +
              '*This dashboard is automatically updated daily by [GitHub Actions](https://github.com/' + owner + '/' + repo + '/actions/workflows/update-health-dashboard.yml)*';

            console.log('Dashboard generated, updating discussion...');

            // Get the discussion node ID using GraphQL
            const discussionQuery = `
              query GetDiscussion($owner: String!, $repo: String!, $number: Int!) {
                repository(owner: $owner, name: $repo) {
                  discussion(number: $number) {
                    id
                  }
                }
              }
            `;

            const discussionResult = await github.graphql(discussionQuery, {
              owner,
              repo,
              number: discussionNumber
            });

            const discussionId = discussionResult.repository.discussion.id;
            console.log(`Found discussion ID: ${discussionId}`);

            // Update the discussion using GraphQL mutation
            const updateMutation = `
              mutation UpdateDiscussion($discussionId: ID!, $body: String!) {
                updateDiscussion(input: {discussionId: $discussionId, body: $body}) {
                  discussion {
                    id
                    number
                  }
                }
              }
            `;

            await github.graphql(updateMutation, {
              discussionId,
              body: dashboardBody
            });

            console.log(`Successfully updated discussion #${discussionNumber}`);
      
      - name: 'Upload metrics artifact'
        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
        with:
          name: health-metrics
          path: health-metrics.json
          retention-days: 90