private extractContentFromDiff()

in app/lib/server/processors/ApiJobExecutor.ts [755:825]
63 lines of code
20 McCabe index (conditional complexity)

  private extractContentFromDiff(diff: string): string {
    // Extract content from diff format
    // This handles unified diff format and extracts added lines
    if (!diff || diff.trim() === "") {
      console.warn("Empty diff provided, returning empty content");
      return "";
    }

    const lines = diff.split("\n");
    const content: string[] = [];
    let foundContent = false;

    console.log(`Extracting content from diff with ${lines.length} lines`);

    for (const line of lines) {
      if (line.startsWith("+") && !line.startsWith("+++")) {
        // Add line (remove the + prefix)
        content.push(line.substring(1));
        foundContent = true;
      } else if (
        !line.startsWith("-") &&
        !line.startsWith("@@") &&
        !line.startsWith("index") &&
        !line.startsWith("diff") &&
        !line.startsWith("+++") &&
        !line.startsWith("---")
      ) {
        // Context line (unchanged)
        if (line.trim() !== "") {
          content.push(line);
          foundContent = true;
        }
      }
    }

    const result = content.join("\n");
    console.log(
      `Extracted ${content.length} lines, found content: ${foundContent}, result length: ${result.length}`
    );

    // If no content was found in the diff, it might be a simple text replacement
    // Try to extract everything after the diff headers
    if (!foundContent && diff.includes("@@")) {
      const hunkStart = diff.indexOf("@@");
      const secondHunkStart = diff.indexOf("@@", hunkStart + 2);
      if (secondHunkStart !== -1) {
        const hunkContent = diff.substring(
          secondHunkStart + diff.substring(secondHunkStart).indexOf("\n") + 1
        );
        const hunkLines = hunkContent.split("\n");
        const extractedContent: string[] = [];

        for (const line of hunkLines) {
          if (line.startsWith("+")) {
            extractedContent.push(line.substring(1));
          } else if (line.startsWith(" ")) {
            extractedContent.push(line.substring(1));
          }
        }

        if (extractedContent.length > 0) {
          console.log(
            `Fallback extraction found ${extractedContent.length} lines`
          );
          return extractedContent.join("\n");
        }
      }
    }

    return result;
  }