import { Router } from "express";
import { createKey } from "../services/keys.js";
import logger from "../services/logger.js";

export const signupRouter = Router();

// Simple signup: email → instant API key (no verification for now)
/**
 * @openapi
 * /v1/signup/free:
 *   post:
 *     tags: [Signup]
 *     summary: Create a free account
 *     description: Sign up with an email to get a free API key (100 screenshots/month).
 *     operationId: signupFree
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             required: [email]
 *             properties:
 *               email:
 *                 type: string
 *                 format: email
 *                 description: Your email address
 *                 example: "user@example.com"
 *     responses:
 *       200:
 *         description: API key created
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 apiKey:
 *                   type: string
 *                   description: Your new API key
 *                 tier:
 *                   type: string
 *                   example: free
 *                 limit:
 *                   type: integer
 *                   example: 100
 *                 message:
 *                   type: string
 *       400:
 *         description: Invalid email
 *         content:
 *           application/json:
 *             schema: { $ref: "#/components/schemas/Error" }
 *       500:
 *         description: Signup failed
 *         content:
 *           application/json:
 *             schema: { $ref: "#/components/schemas/Error" }
 */
signupRouter.post("/free", async (req, res) => {
  const { email } = req.body;

  if (!email || typeof email !== "string" || !email.includes("@")) {
    res.status(400).json({ error: "Valid email required" });
    return;
  }

  try {
    const key = await createKey(email.toLowerCase().trim(), "free");
    logger.info({ email: email.slice(0, 3) + "***" }, "Free signup");
    res.json({
      apiKey: key.key,
      tier: "free",
      limit: 100,
      message: "Your API key is ready! 100 free screenshots/month.",
    });
  } catch (err: any) {
    logger.error({ err }, "Signup failed");
    res.status(500).json({ error: "Signup failed" });
  }
});