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JiraReverter.js

// Prompt: Write a Javascript code that fetches all issues from Jira with a given filter, 
// finds the last edited value in Description field and reverts to that value
import fetch from 'node-fetch';

const JIRA_DOMAIN = 'your-domain.atlassian.net';
const API_TOKEN = 'your-api-token';
const EMAIL = '[email protected]';

const headers = {
  'Authorization': `Basic ${Buffer.from(`${EMAIL}:${API_TOKEN}`).toString('base64')}`,
  'Accept': 'application/json',
  'Content-Type': 'application/json'
};

async function fetchAndRevertJiraDescription(jql) {
  try {
    const searchResponse = await fetch(`https://${JIRA_DOMAIN}/rest/api/3/search?jql=${encodeURIComponent(jql)}`, {
      method: 'GET',
      headers: headers
    });
    const searchData = await searchResponse.json();

    if (searchData.issues.length === 0) {
      console.log('No issues found with the given filter');
      return;
    }

    for (const issue of searchData.issues) {
      const historyResponse = await fetch(`https://${JIRA_DOMAIN}/rest/api/3/issue/${issue.key}/changelog`, {
        method: 'GET',
        headers: headers
      });
      const historyData = await historyResponse.json();

      const descriptionChanges = historyData.values
        .flatMap(history => history.items)
        .filter(item => item.field === 'description')
        .reverse();

      if (descriptionChanges.length < 2) {
        console.log(`No previous description found for issue ${issue.key}`);
        continue;
      }

      const previousDescription = descriptionChanges[1].toString;

      // Fetch the current issue data
      const issueResponse = await fetch(`https://${JIRA_DOMAIN}/rest/api/3/issue/${issue.key}`, {
        method: 'GET',
        headers: headers
      });
      const issueData = await issueResponse.json();

      // Prepare the update payload
      const updatePayload = {
        fields: {
          description: {
            type: "doc",
            version: 1,
            content: [
              {
                type: "paragraph",
                content: [
                  {
                    text: previousDescription,
                    type: "text"
                  }
                ]
              }
            ]
          }
        }
      };

      // Update the issue with the previous description
      const updateResponse = await fetch(`https://${JIRA_DOMAIN}/rest/api/3/issue/${issue.key}`, {
        method: 'PUT',
        headers: headers,
        body: JSON.stringify(updatePayload)
      });

      if (updateResponse.ok) {
        console.log(`Description reverted successfully for issue ${issue.key}`);
      } else {
        const errorData = await updateResponse.json();
        console.log(`Failed to revert description for issue ${issue.key}. Status: ${updateResponse.status}`);
        console.log('Error details:', JSON.stringify(errorData, null, 2));
      }
    }
  } catch (error) {
    console.error('An error occurred:', error);
  }
}

// Example usage
const jql = 'project = "YOUR_PROJECT" AND updated >= -7d';
fetchAndRevertJiraDescription(jql);