Git Commit & Pull Request Description Writer

import { GoogleGenAI } from '@google/genai';

const ai = new GoogleGenAI({ apiKey: process.env.GEMINI_API_KEY });

async function runPrompt(variables: Record<string, string>) {
  let promptText = `Generate a Pull Request description based on the provided git diff.

Git Diff Context:
{{git_diff}}

Format:
- PR Title (Conventional Commit format)
- Overview of Changes
- Type of Change (Feature, Bugfix, Refactor)
- Testing Steps`;
  Object.entries(variables).forEach(([key, val]) => {
    promptText = promptText.replace(new RegExp(`{{\\s*${key}\\s*}}`, 'g'), val);
  });

  const response = await ai.models.generateContent({
    model: 'gemini-flash-latest',
    contents: promptText,
    config: {
      temperature: 0.7,
      systemInstruction: `You enforce Conventional Commits guidelines and clear developer communication.`,
    },
  });

  return response.text;
}