name: Issue Agent

on:
  issues:
    types: [opened, edited, reopened, labeled]

permissions:
  issues: write

jobs:
  analyze-issue:
    runs-on: ubuntu-latest
    steps:
      - name: Analyze issue and post comment
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const issueNumber = context.issue.number;
            const issueTitle = context.payload.issue.title;
            const issueBody  = context.payload.issue.body || '(no description provided)';
            const issueUser  = context.payload.issue.user.login;
            const labels     = (context.payload.issue.labels || []).map(l => l.name).join(', ') || 'none';

            // Call GitHub Models API for AI-powered analysis
            const response = await fetch('https://models.inference.ai.azure.com/chat/completions', {
              method: 'POST',
              headers: {
                'Content-Type': 'application/json',
                'Authorization': `Bearer ${process.env.GITHUB_TOKEN}`
              },
              body: JSON.stringify({
                model: 'gpt-4o-mini',
                messages: [
                  {
                    role: 'system',
                    content: `You are a rigorous technical agent reviewing GitHub issues for the "simulation-theory" repository — a research project on simulation theory, mathematics, quantum mechanics, and philosophy. Your job is to carefully read each issue and provide a thorough, structured analysis.

For each issue produce:
1. **Summary** — a concise one-paragraph summary of what the issue is about.
2. **Key Points** — bullet list of the most important observations or questions raised.
3. **Relevance to Simulation Theory** — how this issue connects to the project's themes.
4. **Suggested Actions** — concrete next steps or questions for the author.

Be rigorous, thoughtful, and constructive. Keep the tone academic and helpful.`
                  },
                  {
                    role: 'user',
                    content: `Please analyze this GitHub issue:\n\n**Title:** ${issueTitle}\n**Author:** ${issueUser}\n**Labels:** ${labels}\n\n**Description:**\n${issueBody}`
                  }
                ],
                max_tokens: 1500,
                temperature: 0.4
              })
            });

            let analysisText;
            if (response.ok) {
              let data;
              try {
                data = await response.json();
              } catch (error) {
                console.log('Failed to parse JSON from GitHub Models API response:', error);
              }

              if (data && data.choices && data.choices.length > 0 && data.choices[0].message) {
                analysisText = data.choices[0].message.content;
              } else if (data) {
                console.log('Unexpected response structure from GitHub Models API:', JSON.stringify(data));
              }
            } else {
              console.log(`GitHub Models API returned ${response.status}: ${await response.text()}`);
            }

            // Fallback: structured analysis without AI
            if (!analysisText) {
              analysisText = `**Summary**\nIssue #${issueNumber} titled *"${issueTitle}"* was submitted by @${issueUser}. ${issueBody.length > 0 ? 'It contains a description that may include images or text.' : 'No description was provided.'}\n\n**Labels:** ${labels}\n\n**Suggested Actions**\n- Review the content of this issue and add appropriate labels if missing.\n- Respond to the author with any clarifying questions.\n- Link related issues or pull requests if applicable.`;
            }

            const marker = '*This comment was generated automatically by the Issue Agent workflow.*';
            const commentBody = `## 🤖 Agent Analysis\n\n${analysisText}\n\n---\n${marker}`;

            // Look for an existing Issue Agent comment and update it if found to avoid spamming
            const { data: existingComments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: issueNumber,
              per_page: 100
            });

            const existingAgentComment = existingComments.find(c =>
              c.user &&
              c.user.type === 'Bot' &&
              typeof c.body === 'string' &&
              c.body.includes(marker)
            );

            if (existingAgentComment) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: existingAgentComment.id,
                body: commentBody
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: issueNumber,
                body: commentBody
              });
            }