Return to Answer

const summaryAnswerID = 380354; // ID of the summary answer
const key = "U4DMV*8nvpm3EOpvf69Rxw(("; // taken from API documentation
const typeTagRegex = /\[(meta-)?tag:(discussion|support|feature-request|bug)\]/i;
const statusTagRegex = /\[(meta-)?tag:(status-[-\w]+)\]/i;
const summaryRegex = /#+\s+(.*)/i;
const gitHubLinkRegex = /\/\/github.com\/\S+\/issues\/(\d+)/i;
const site = "meta";

async function main() {
  // Find question ID and current summary
  var result = await $.get("https://api.stackexchange.com/2.3/answers/" + summaryAnswerID + "?site=" + site + "&filter=!nKzQURFm*e&key=" + key);
  let questionID = result.items[0]["question_id"];
  let summaryBody = result.items[0]["body"];
  let summaryMarkdown = result.items[0]["body_markdown"];
  let lines = summaryMarkdown.split(/\r?\n/);
  
  var linesToAdd = [];
  var linesToChange = {};
  var page = 0;
  while (true) {
    // Fetch answers
    result = await $.get("https://api.stackexchange.com/2.3/questions/380295/answers?page=" + ++page +
        "&pagesize=100&order=asc&sort=creation&site=" + site + "&filter=!nKzQURFm*e&key=" + key);
    for (let item of result.items) {
      // Summary?
      let answerID = item["answer_id"];
      if (answerID == summaryAnswerID)
        continue;
      
      // Present in summary?
      var currentLine = null;
      for (let line of lines) {
        if (line.search(new RegExp('/a/' + answerID + '[/)]')) != -1) {
          currentLine = line;
          break;
        }
      }
      
      // Analyze answer
      let markdown = item["body_markdown"];
      let typeTagMatch = typeTagRegex.exec(markdown);
      let summaryMatch = summaryRegex.exec(markdown);
      let statusTagMatch = statusTagRegex.exec(markdown);
      let gitHubLinkMatch = gitHubLinkRegex.exec(markdown);      
      
      if (currentLine == null) {
        // Generate new entry
        let title = summaryMatch == null ? "(please add summary)" : summaryMatch[1];
        let summary = "[" + title + "](/a/" + answerID + ")";        
        linesToAdd.push(generateLine(typeTagMatch, summary, statusTagMatch, gitHubLinkMatch));
      } else {
        // Compare against summary
        let components = currentLine.split("|");
        let typeTag = typeTagRegex.exec(components[1].trim());
        let summary = components[2].trim();
        let statusTag = statusTagRegex.exec(components[3].trim());
        let gitHubLink = gitHubLinkRegex.exec(components[4].trim()); // may be absent, if GitHub isn't used
        var changeNeeded = typeTagMatch != null && (typeTag == null || typeTag[2].toLowerCase() != typeTagMatch[2].toLowerCase());
        changeNeeded |= statusTagMatch != null && (statusTag == null || statusTag[2].toLowerCase() != statusTagMatch[2].toLowerCase());
        changeNeeded |= gitHubLinkMatch != null && (gitHubLink == null || gitHubLink[1].toLowerCase() != gitHubLinkMatch[1].toLowerCase());
        if (!changeNeeded)
          continue;
        
        linesToChange[currentLine] = generateLine(typeTagMatch, summary, statusTagMatch, gitHubLinkMatch);
      }
    }
    
    // Any more answers?
    if (!result["has_more"])
      break;
  }
  
  // Changes needed?
  if (linesToAdd.length == 0 && Object.keys(linesToChange).length == 0) {
    alert("The summary is up-to-date.");
    return;
  }  
  var messages = [];
  if (linesToAdd.length != 0) {
    messages.push("\nThe following lines need to be added:");
    for (let lineToAdd of linesToAdd) {
      messages.push(lineToAdd);
    }
  }
  if (Object.keys(linesToChange).length != 0) {
    messages.push("\nThe following lines need to be changed:");
    for (let lineToChange in linesToChange) {
      messages.push("\n" + lineToChange + "\n-->\n" + linesToChange[lineToChange] + "\n");
    }
  }  
  console.log(messages.join("\n"));
  alert("Changes needed, please check the console for details.")
}
main();

function generateLine(typeTagMatch, summary, statusTagMatch, gitHubLinkMatch) {
  var components = [""];
  components.push(typeTagMatch == null ? "(please add type)" : "[tag:" + typeTagMatch[2] + "]");
  components.push(summary);
  components.push(statusTagMatch == null ? "" : "[tag:" + statusTagMatch[2] + "]");
  if (gitHubLinkMatch != null) {
    components.push("[#" + gitHubLinkMatch[1] + "](https:" + gitHubLinkMatch[0] + ")");
  }
  components.push("");
  return components.join(" | ").trim();
}

<script src="https://code.jquery.com/jquery-1.11.1.min.js" type="text/javascript" ></script>

<script src="https://code.jquery.com/jquery-1.11.1.min.js" type="text/javascript" ></script>

const summaryAnswerID = 380354; // ID of the summary answer
const key = "U4DMV*8nvpm3EOpvf69Rxw(("; // taken from API documentation
const typeTagRegex = /\[(meta-)?tag:(discussion|support|feature-request|bug)\]/i;
const statusTagRegex = /\[(meta-)?tag:(status-[-\w]+)\]/i;
const summaryRegex = /#+\s+(.*)/i;
const gitHubLinkRegex = /\/\/github.com\/\S+\/issues\/(\d+)/i;
const site = "meta";

async function main() {
  // Find question ID and current summary
  var result = await $.get("https://api.stackexchange.com/2.3/answers/" + summaryAnswerID + "?site=" + site + "&filter=!nKzQURFm*e&key=" + key);
  let questionID = result.items[0]["question_id"];
  let summaryBody = result.items[0]["body"];
  let summaryMarkdown = result.items[0]["body_markdown"];
  let lines = summaryMarkdown.split(/\r?\n/);
  
  var linesToAdd = [];
  var linesToChange = {};
  var page = 0;
  while (true) {
    // Fetch answers
    result = await $.get("https://api.stackexchange.com/2.3/questions/380295/answers?page=" + ++page +
        "&pagesize=100&order=asc&sort=creation&site=" + site + "&filter=!nKzQURFm*e&key=" + key);
    for (let item of result.items) {
      // Summary?
      let answerID = item["answer_id"];
      if (answerID == summaryAnswerID)
        continue;
      
      // Present in summary?
      var currentLine = null;
      for (let line of lines) {
        if (line.search(new RegExp('/a/' + answerID + '[/)]')) != -1) {
          currentLine = line;
          break;
        }
      }
      
      // Analyze answer
      let markdown = item["body_markdown"];
      let typeTagMatch = typeTagRegex.exec(markdown);
      let summaryMatch = summaryRegex.exec(markdown);
      let statusTagMatch = statusTagRegex.exec(markdown);
      let gitHubLinkMatch = gitHubLinkRegex.exec(markdown);      
      
      if (currentLine == null) {
        // Generate new entry
        let title = summaryMatch == null ? "(please add summary)" : summaryMatch[1];
        let summary = "[" + title + "](/a/" + answerID + ")";        
        linesToAdd.push(generateLine(typeTagMatch, summary, statusTagMatch, gitHubLinkMatch));
      } else {
        // Compare against summary
        let components = currentLine.split("|");
        let typeTag = typeTagRegex.exec(components[1].trim());
        let summary = components[2].trim();
        let statusTag = statusTagRegex.exec(components[3].trim());
        let gitHubLink = gitHubLinkRegex.exec(components[4].trim()); // may be absent, if GitHub isn't used
        var changeNeeded = typeTagMatch != null && (typeTag == null || typeTag[2].toLowerCase() != typeTagMatch[2].toLowerCase());
        changeNeeded |= statusTagMatch != null && (statusTag == null || statusTag[2].toLowerCase() != statusTagMatch[2].toLowerCase());
        changeNeeded |= gitHubLinkMatch != null && (gitHubLink == null || gitHubLink[1].toLowerCase() != gitHubLinkMatch[1].toLowerCase());
        if (!changeNeeded)
          continue;
        
        linesToChange[currentLine] = generateLine(typeTagMatch, summary, statusTagMatch, gitHubLinkMatch);
      }
    }
    
    // Any more answers?
    if (!result["has_more"])
      break;
  }
  
  // Changes needed?
  if (linesToAdd.length == 0 && Object.keys(linesToChange).length == 0) {
    alert("The summary is up-to-date.");
    return;
  }  
  var messages = [];
  if (linesToAdd.length != 0) {
    messages.push("\nThe following lines need to be added:");
    for (let lineToAdd of linesToAdd) {
      messages.push(lineToAdd);
    }
  }
  if (Object.keys(linesToChange).length != 0) {
    messages.push("\nThe following lines need to be changed:");
    for (let lineToChange in linesToChange) {
      messages.push("\n" + lineToChange + "\n-->\n" + linesToChange[lineToChange] + "\n");
    }
  }  
  console.log(messages.join("\n"));
  alert("Changes needed, please check the console for details.")
}
main();

function generateLine(typeTagMatch, summary, statusTagMatch, gitHubLinkMatch) {
  var components = [""];
  components.push(typeTagMatch == null ? "(please add type)" : "[tag:" + typeTagMatch[2] + "]");
  components.push(summary);
  components.push(statusTagMatch == null ? "" : "[tag:" + statusTagMatch[2] + "]");
  if (gitHubLinkMatch != null) {
    components.push("[#" + gitHubLinkMatch[1] + "](https:" + gitHubLinkMatch[0] + ")");
  }
  components.push("");
  return components.join(" | ").trim();
}