lemon squeezy helpers

lemon.page.ts

import { NextApiRequest, NextApiResponse } from "next";
import { validateLemonSqueezyHook } from "@/pages/api/lemon/validateLemonSqueezyHook";
import getRawBody from "raw-body";
import { LemonEventType, ResBody } from "@/pages/api/lemon/types";
import { onOrderCreated } from "@/pages/api/lemon/hooks/onOrderCreated";
import { returnError, returnOkay } from "@/pages/api/lemon/utils";

export const config = {
  api: {
    bodyParser: false,
  },
};

const handler = async (req: NextApiRequest, res: NextApiResponse) => {
  console.log("🍋: hello");

  console.log("req.method", req.method);

  if (req.method !== "POST") {
    console.log("🍋: method not allowed");
    return res.status(405).json({
      message: "Method not allowed",
    });
  }

  console.log("req.method is allowed");

  try {
    const rawBody = await getRawBody(req);
    const isValidHook = await validateLemonSqueezyHook({ req, rawBody });

    console.log("🍋: isValidHook", isValidHook);

    if (!isValidHook) {
      return res.status(400).json({
        message: "Invalid signature.",
      });
    }

    //@ts-ignore
    const event: ResBody["body"] = JSON.parse(rawBody);
    const eventType = event.meta.event_name;
    console.log("🍋: event type", eventType);

    const handlers = {
      [LemonEventType.OrderCreated]: onOrderCreated,
    };

    const foundHandler = handlers[eventType];

    if (foundHandler) {
      try {
        await foundHandler({ event });
        returnOkay(res);
      } catch (err) {
        console.log(`🍋: error in handling ${eventType} event`, err);
        returnError(res);
      }
    } else {
      console.log(`🍋: no handler found for ${eventType} event`);
    }

    console.log("eventType", eventType);
  } catch (e: unknown) {
    if (typeof e === "string") {
      return res.status(400).json({
        message: `Webhook error: ${e}`,
      });
    }
    if (e instanceof Error) {
      return res.status(400).json({
        message: `Webhook error: ${e.message}`,
      });
    }
    throw e;
  }
};

export default handler;

types.ts

import { LemonsqueezySubscriptionPause } from "./client/methods/updateSubscription/types";
import { NextApiRequest } from "next";

export enum LemonEventType {
  SubCreated = "subscription_created",
  SubUpdated = "subscription_updated",
  SubPaymentSuccess = "subscription_payment_success",
  OrderCreated = "order_created",
}

export type CustomLemonSqueezyCheckoutData = {
  user_id: string;
};

export type LemonMeta = {
  test_mode: boolean;
  event_name: LemonEventType;
  custom_data: CustomLemonSqueezyCheckoutData;
};

export type SubscriptionCreatedUpdatedCommon = {
  type: string;
  id: string;
  attributes: {
    store_id: number;
    customer_id: number;
    order_id: number;
    order_item_id: number;
    product_id: number;
    variant_id: number;
    product_name: string;
    variant_name: string;
    user_name: string;
    user_email: string;
    status: string;
    status_formatted: string;
    card_brand: string;
    card_last_four: string;
    pause: null | LemonsqueezySubscriptionPause;
    cancelled: boolean;
    trial_ends_at: null | Date;
    billing_anchor: number;
    urls: Record<string, string>;
    renews_at: string;
    ends_at: null | Date;
    created_at: string;
    updated_at: string;
    test_mode: boolean;
  };
  relationships?: {
    store: Record<string, unknown>;
    customer: Record<string, unknown>;
    order: Record<string, unknown>;
    "order-item": Record<string, unknown>;
    product: Record<string, unknown>;
    variant: Record<string, unknown>;
    "subscription-invoices": Record<string, string>;
  };
  links?: {
    self: string;
  };
};

type SubscriptionCreated = Omit<
  SubscriptionCreatedUpdatedCommon,
  "type" | "relationships" | "links"
> & {
  type: string;
  relationships: SubscriptionCreatedUpdatedCommon["relationships"];
  links: SubscriptionCreatedUpdatedCommon["links"];
};

type SubscriptionUpdated = Omit<
  SubscriptionCreatedUpdatedCommon,
  "type" | "relationships" | "links"
> & {
  type: "subscriptions";
};

export type SubscriptionPaymentSuccess = {
  type: "subscription-invoices";
  id: string;
  attributes: {
    store_id: number;
    subscription_id: number;
    billing_reason: string;
    card_brand: string;
    card_last_four: string;
    currency: string;
    currency_rate: string;
    subtotal: number;
    discount_total: number;
    tax: number;
    total: number;
    subtotal_usd: number;
    discount_total_usd: number;
    tax_usd: number;
    total_usd: number;
    status: string;
    status_formatted: string;
    refunded: boolean;
    refunded_at: string | null;
    subtotal_formatted: string;
    discount_total_formatted: string;
    tax_formatted: string;
    total_formatted: string;
    urls: Record<string, unknown>;
    created_at: string;
    updated_at: string;
    test_mode: boolean;
  };
  relationships: {
    store: {
      data: {
        type: "stores";
        id: string;
      };
    };
    subscription: {
      data: {
        type: "subscriptions";
        id: string;
      };
    };
  };
  links: {
    self: string;
  };
};

export type SubscriptionCreatedEvent = {
  meta: LemonMeta;
  data: SubscriptionCreated;
};

export type SubscriptionUpdatedEvent = {
  meta: LemonMeta;
  data: SubscriptionUpdated;
};

export type SubscriptionPaymentSuccessEvent = {
  meta: LemonMeta;
  data: SubscriptionPaymentSuccess;
};

export type LemonEvent =
  | SubscriptionCreatedEvent
  | SubscriptionUpdatedEvent
  | SubscriptionPaymentSuccessEvent;

export interface ResBody extends NextApiRequest {
  body: LemonEvent;
}

validateLemonSqueezyHook.ts

import { NextApiRequest } from "next";
import crypto from "crypto";
import { env } from "@/env.mjs";

export const validateLemonSqueezyHook = async ({
  req,
  rawBody,
}: {
  req: NextApiRequest;
  rawBody: any;
}): Promise<boolean> => {
  try {
    const hmac = crypto.createHmac("sha256", env.LEMONSQUEEZY_WEBHOOK_SECRET);
    const digest = Buffer.from(hmac.update(rawBody).digest("hex"), "utf8");
    const signature = Buffer.from(req.headers["x-signature"] as string, "utf8");

    let validated = crypto.timingSafeEqual(digest, signature);
    return validated;
  } catch (err) {
    console.log("err", err);
    return false;
  }

  return false;
};

I open sourced all the lemon squeezy helpers here

You can find all the lemon squeezy helpers here <https://github.com/kitze/lemon-squeezy-helpers>

…

-- [image: avatar] Kitze Founder of Sizzy Benji - the ultimate welness & productivity app Zero To Shipped - Master Fullstack development

On December 19, 2023 at 4:25 PM, Cristian Furcila ***@***.***) wrote: @fcristel commented on this gist. you're missing some files here I guess: @/pages/api/lemon/hooks/onOrderCreated @/pages/api/lemon/utils ./client/methods/updateSubscription/types — Reply to this email directly, view it on GitHub <https://gist.github.com/kitze/112fcb1bfcbc60dcfd9500ba3a6a6196#gistcomment-4800246> or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAI3LEUQDCOME4HML5H2PJLYKGWYDBFKMF2HI4TJMJ2XIZLTSKBKK5TBNR2WLJDHNFZXJJDOMFWWLK3UNBZGKYLEL52HS4DFQKSXMYLMOVS2I5DSOVS2I3TBNVS3W5DIOJSWCZC7OBQXE5DJMNUXAYLOORPWCY3UNF3GS5DZVRZXKYTKMVRXIX3UPFYGLK2HNFZXIQ3PNVWWK3TUUZ2G64DJMNZZDAVEOR4XAZNEM5UXG5FFOZQWY5LFVEYTENZQGA3TENBUU52HE2LHM5SXFJTDOJSWC5DF>. You are receiving this email because you authored the thread. Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.                                                            

You can find all the lemon squeezy helpers here https://github.com/kitze/lemon-squeezy-helpers
…
-- [image: avatar] Kitze Founder of Sizzy Benji - the ultimate welness & productivity app Zero To Shipped - Master Fullstack development
On December 19, 2023 at 4:25 PM, Cristian Furcila @.***) wrote: @fcristel commented on this gist. you're missing some files here I guess: @/pages/api/lemon/hooks/onOrderCreated @/pages/api/lemon/utils ./client/methods/updateSubscription/types — Reply to this email directly, view it on GitHub https://gist.github.com/kitze/112fcb1bfcbc60dcfd9500ba3a6a6196#gistcomment-4800246 or unsubscribe https://github.com/notifications/unsubscribe-auth/AAI3LEUQDCOME4HML5H2PJLYKGWYDBFKMF2HI4TJMJ2XIZLTSKBKK5TBNR2WLJDHNFZXJJDOMFWWLK3UNBZGKYLEL52HS4DFQKSXMYLMOVS2I5DSOVS2I3TBNVS3W5DIOJSWCZC7OBQXE5DJMNUXAYLOORPWCY3UNF3GS5DZVRZXKYTKMVRXIX3UPFYGLK2HNFZXIQ3PNVWWK3TUUZ2G64DJMNZZDAVEOR4XAZNEM5UXG5FFOZQWY5LFVEYTENZQGA3TENBUU52HE2LHM5SXFJTDOJSWC5DF. You are receiving this email because you authored the thread. Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

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