commit 080be79ae31aa70fb3f2eb49012609416938a35f · finxol.io/hooks

+10

deno.lock

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       {

     

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         "version": "5",

     

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         "specifiers": {

     

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           "jsr:@std/crypto@*": "1.0.5",

     

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           "jsr:@std/encoding@*": "1.0.10",

     

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           "npm:@hono/ua-blocker@~0.1.9": "0.1.9_hono@4.9.6",

     

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           "npm:@types/node@*": "24.2.0",

     

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           "npm:hono@^4.9.6": "4.9.6",

     

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           "npm:zod@^4.1.5": "4.1.5"

     

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         },

     

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         "jsr": {

     

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           "@std/crypto@1.0.5": {

     

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             "integrity": "0dcfbb319fe0bba1bd3af904ceb4f948cde1b92979ec1614528380ed308a3b40"

     

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           },

     

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           "@std/encoding@1.0.10": {

     

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             "integrity": "8783c6384a2d13abd5e9e87a7ae0520a30e9f56aeeaa3bdf910a3eaaf5c811a1"

     

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           }

     

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         },

     

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         "npm": {

     

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           "@hono/ua-blocker@0.1.9_hono@4.9.6": {

+1 -1

src/main.ts

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       import { aiBots, useAiRobotsTxt } from "@hono/ua-blocker/ai-bots"

     

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       import { config } from "../config.ts"

     

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       import { sensors } from "./sensors.ts"

     

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       import { kv } from "./util.ts"

     

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       const app = new Hono()

     

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           .route("/sensors", sensors)

     
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           })

     

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       if (Deno.env.get("DENO_ENV") === "dev") {

     

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           const kv = await Deno.openKv()

     

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           const { default: data } = await import("../test.json", { with: { type: "json" } })

     

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           kv.set(

     

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               ["sensors", "latest"],

+26 -11

src/sensors.ts

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       import { Hono } from "hono"

     

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       import { validator } from "hono/validator"

     

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       import { z } from "zod"

     

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       import { tryCatch } from "./util.ts"

     

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       import { fetchWithCache, kv } from "./util.ts"

     

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       const SensorsSchema = z.object({

     

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           sensorData: z.array(

     
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       type Sensors = z.infer<typeof SensorsSchema>

     

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       const kv = await Deno.openKv()

     

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       type Country = {

     

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           country: string

     

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           country_code: string

     

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       }

     

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       const sensors = new Hono()

     

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           .get("/country", async (c) => {

     

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               // Served cached data if available

     

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               const cached = await kv.get<Country>(["country"])

     

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               if (cached.value) {

     

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                   console.info("Serving cached country data")

     

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                   return c.json(cached.value)

     

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               }

     

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               // Fetch sensors data from KV

     

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               const data = await kv.get<Sensors>(["sensors", "latest"])

     

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               if (!data.value) {

     

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                   return c.text("No data found", 404)

     

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               }

     

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               // Extract location from sensors data

     

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               const location = data.value.sensorData.find((sensor) =>

     

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                   sensor.sensorType === "location"

     

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               )?.data

     
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                   return c.text("No location data found", 404)

     

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               }

     

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               const geocode = await tryCatch(

     

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                   fetch(

     

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                       `https://api.geoapify.com/v1/geocode/reverse?lat=${location.latitude}&lon=${location.longitude}&apiKey=${

     

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                           Deno.env.get("GEOAPIFY_API_KEY")

     

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                       }`,

     

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                   )

     

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                       .then((res) => res.json()),

     

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               // Extract geocode from location data

     

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               const geocode = await fetchWithCache<Country>(

     

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                   `https://api.geoapify.com/v1/geocode/reverse?lat=${location.latitude}&lon=${location.longitude}&apiKey=${

     

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                       Deno.env.get("GEOAPIFY_API_KEY")

     

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                   }`,

     

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               )

     

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               if (!geocode.success) {

     
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                   return c.text("Invalid country data", 400)

     

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               }

     

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               return c.json({

     

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               const ret = {

     

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                   country: country.data.features[0].properties.country,

     

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                   country_code: country.data.features[0].properties.country_code,

     

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               })

     

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               }

     

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               // Cache country data to KV store (expiry set for 2 hours)

     

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               await kv.set(["country"], ret satisfies Country, { expireIn: 60 * 60 * 2 })

     

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               return c.json(ret)

     

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           })

     

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           .get("/get", async (c) => {

     

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               const data = await kv.get<Sensors>(["sensors", "latest"])

+62

src/util.ts

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       import { crypto } from "jsr:@std/crypto"

     

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       import { encodeHex } from "jsr:@std/encoding/hex"

     

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       export const kv = await Deno.openKv()

     

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       /**

     

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        * Wraps a promise in a try/catch block and returns a Result object representing

     

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        * either a successful value or an error.

     
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               return { success: false, value: null, error: error as E }

     

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           }

     

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       }

     

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       /**

     

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        * Fetches data from a URL with caching.

     

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        * Cache is stored in the KV

     

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        * @param url - The URL to fetch data from.

     

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        * @returns A promise that resolves to an object with success status, value, and error.

     

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        */

     

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       export async function fetchWithCache<T>(url: string): Promise<

     

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           | {

     

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               success: true

     

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               value: T

     

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               error: null

     

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           }

     

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           | {

     

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               success: false

     

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               value: null

     

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               error: string

     

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           }

     

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       > {

     

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           // Calculate the hash of the request URL

     

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           const keybuffer = new TextEncoder().encode(url)

     

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           const hashBuffer = await crypto.subtle.digest("SHA-256", keybuffer)

     

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           const hash = encodeHex(hashBuffer)

     

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           // Check if the data is already in cache

     

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           const cached = await kv.get<T>(["fetch-cache", hash])

     

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           if (cached.value) {

     

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               console.info("Serving cached request data")

     

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               return {

     

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                   success: true,

     

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                   value: cached.value,

     

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                   error: null,

     

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               }

     

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           }

     

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           // Fetch the data from the URL

     

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           const data = await tryCatch(

     

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               fetch(url).then((res) => res.json() as T),

     

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           )

     

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           if (!data.success) {

     

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               return {

     

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                   success: false,

     

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                   value: null,

     

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                   error: data.error.message,

     

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               }

     

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           }

     

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           // Store the fetched data in cache, with a 1-day expiration

     

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           await kv.set(["fetch-cache", hash], data.value, { expireIn: 60 * 60 * 24 })

     

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           return {

     

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               success: true,

     

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               value: data.value,

     

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               error: null,

     

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           }

     

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       }