loop posting works

package-lock.json

@@ -13,6 +13,7 @@
         "express": "^4.19.2",
         "formdata-node": "^6.0.3",
         "node-fetch": "^3.3.2",
+        "node-html-parser": "^6.1.13",
         "uuid": "^10.0.0"
       }
     },
@@ -71,6 +72,11 @@
         "npm": "1.2.8000 || >= 1.4.16"
       }
     },
+    "node_modules/boolbase": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/boolbase/-/boolbase-1.0.0.tgz",
+      "integrity": "sha512-JZOSA7Mo9sNGB8+UjSgzdLtokWAky1zbztM3WRLCbZ70/3cTANmQmOdR7y2g+J0e2WXywy1yS468tY+IruqEww=="
+    },
     "node_modules/bytes": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
@@ -140,6 +146,32 @@
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
       "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ=="
     },
+    "node_modules/css-select": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/css-select/-/css-select-5.1.0.tgz",
+      "integrity": "sha512-nwoRF1rvRRnnCqqY7updORDsuqKzqYJ28+oSMaJMMgOauh3fvwHqMS7EZpIPqK8GL+g9mKxF1vP/ZjSeNjEVHg==",
+      "dependencies": {
+        "boolbase": "^1.0.0",
+        "css-what": "^6.1.0",
+        "domhandler": "^5.0.2",
+        "domutils": "^3.0.1",
+        "nth-check": "^2.0.1"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/fb55"
+      }
+    },
+    "node_modules/css-what": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/css-what/-/css-what-6.1.0.tgz",
+      "integrity": "sha512-HTUrgRJ7r4dsZKU6GjmpfRK1O76h97Z8MfS1G0FozR+oF2kG6Vfe8JE6zwrkbxigziPHinCJ+gCPjA9EaBDtRw==",
+      "engines": {
+        "node": ">= 6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/fb55"
+      }
+    },
     "node_modules/data-uri-to-buffer": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/data-uri-to-buffer/-/data-uri-to-buffer-4.0.1.tgz",
@@ -197,6 +229,57 @@
         "npm": "1.2.8000 || >= 1.4.16"
       }
     },
+    "node_modules/dom-serializer": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-2.0.0.tgz",
+      "integrity": "sha512-wIkAryiqt/nV5EQKqQpo3SToSOV9J0DnbJqwK7Wv/Trc92zIAYZ4FlMu+JPFW1DfGFt81ZTCGgDEabffXeLyJg==",
+      "dependencies": {
+        "domelementtype": "^2.3.0",
+        "domhandler": "^5.0.2",
+        "entities": "^4.2.0"
+      },
+      "funding": {
+        "url": "https://github.com/cheeriojs/dom-serializer?sponsor=1"
+      }
+    },
+    "node_modules/domelementtype": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-2.3.0.tgz",
+      "integrity": "sha512-OLETBj6w0OsagBwdXnPdN0cnMfF9opN69co+7ZrbfPGrdpPVNBUj02spi6B1N7wChLQiPn4CSH/zJvXw56gmHw==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/fb55"
+        }
+      ]
+    },
+    "node_modules/domhandler": {
+      "version": "5.0.3",
+      "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-5.0.3.tgz",
+      "integrity": "sha512-cgwlv/1iFQiFnU96XXgROh8xTeetsnJiDsTc7TYCLFd9+/WNkIqPTxiM/8pSd8VIrhXGTf1Ny1q1hquVqDJB5w==",
+      "dependencies": {
+        "domelementtype": "^2.3.0"
+      },
+      "engines": {
+        "node": ">= 4"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/domhandler?sponsor=1"
+      }
+    },
+    "node_modules/domutils": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/domutils/-/domutils-3.1.0.tgz",
+      "integrity": "sha512-H78uMmQtI2AhgDJjWeQmHwJJ2bLPD3GMmO7Zja/ZZh84wkm+4ut+IUnUdRa8uCGX88DiVx1j6FRe1XfxEgjEZA==",
+      "dependencies": {
+        "dom-serializer": "^2.0.0",
+        "domelementtype": "^2.3.0",
+        "domhandler": "^5.0.3"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/domutils?sponsor=1"
+      }
+    },
     "node_modules/ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -210,6 +293,17 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/entities": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-4.5.0.tgz",
+      "integrity": "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw==",
+      "engines": {
+        "node": ">=0.12"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/entities?sponsor=1"
+      }
+    },
     "node_modules/es-define-property": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/es-define-property/-/es-define-property-1.0.0.tgz",
@@ -470,6 +564,14 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/he": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/he/-/he-1.2.0.tgz",
+      "integrity": "sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw==",
+      "bin": {
+        "he": "bin/he"
+      }
+    },
     "node_modules/http-errors": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-2.0.0.tgz",
@@ -608,6 +710,26 @@
         "url": "https://opencollective.com/node-fetch"
       }
     },
+    "node_modules/node-html-parser": {
+      "version": "6.1.13",
+      "resolved": "https://registry.npmjs.org/node-html-parser/-/node-html-parser-6.1.13.tgz",
+      "integrity": "sha512-qIsTMOY4C/dAa5Q5vsobRpOOvPfC4pB61UVW2uSwZNUp0QU/jCekTal1vMmbO0DgdHeLUJpv/ARmDqErVxA3Sg==",
+      "dependencies": {
+        "css-select": "^5.1.0",
+        "he": "1.2.0"
+      }
+    },
+    "node_modules/nth-check": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-2.1.1.tgz",
+      "integrity": "sha512-lqjrjmaOoAnWfMmBPL+XNnynZh2+swxiX3WUE0s4yEHI6m+AwrK2UZOimIRl3X/4QctVqS8AiZjFqyOGrMXb/w==",
+      "dependencies": {
+        "boolbase": "^1.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/nth-check?sponsor=1"
+      }
+    },
     "node_modules/object-inspect": {
       "version": "1.13.2",
       "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.13.2.tgz",

package.json

@@ -16,6 +16,7 @@
     "express": "^4.19.2",
     "formdata-node": "^6.0.3",
     "node-fetch": "^3.3.2",
+    "node-html-parser": "^6.1.13",
     "uuid": "^10.0.0"
   }
 }

src/api/fetch.cjs

@@ -1,40 +1,58 @@
-async function get_radar_image() {
+const fs = require('fs');
-    try {
+const util = require('util');
-        let radar_src = "https://weather.bangkok.go.th/Images/Radar/radarh.jpg"
+const stream = require('stream');
-        const radar_image = await axios.get(radar_src, {
+const pipeline = util.promisify(stream.pipeline);''
-            responseType: "stream"
-        });
 
-        const radar_image_size = radar_image.headers['content-length'];
+const axios = require('axios');
-        console.log("Got Radar Data");
+const html_parser = require('node-html-parser');
-        return [radar_image, radar_image_size];
+
+
+async function get_image_size(url) {
+    try {
+        const image = await axios.get(url);
+        return image.headers['content-length'];
     } catch (error) {
         console.error(error);
-        return [error];
+        return error;
     }
 }
 
-async function get_image(url) {
+async function save_image(url, path) {
+    /* try {
+        const image = await axios.get(url, {
+            responseType: "stream"
+        });
+
+        image.data.pipe(fs.createWriteStream(path));
+
+        const image_size = image.headers['content-length'];
+        return image_size;
+    } catch (error) {
+        console.error(error);
+        return error;
+    } */
+
     try {
         const image = await axios.get(url, {
             responseType: "stream"
         });
 
-        const image_size = image.headers['content-length'];
+        await pipeline(image.data, fs.createWriteStream(path));
-        console.log("Got Radar Data");
+        console.log("Image downloaded successfully");
-        return [image, image_size];
     } catch (error) {
-
+        console.error("Imae download failed: ", error);
+        return error;
     }
 }
 
 async function get_radar_caption() {
     const response = await axios.get('https://weather.bangkok.go.th/Radar/RadarHighResolution.aspx');
 
-    let root = parse(response.data);
+    let root = html_parser.parse(response.data);
     console.log("Got Radar Caption")
     return root.querySelector('#repeaDaily_lblDESCRIPTION_0').childNodes[0]._rawText;
 }
 
-module.exports.get_radar_image = get_radar_image;
+module.exports.get_image_size = get_image_size;
+module.exports.save_image = save_image;
 module.exports.get_radar_caption = get_radar_caption;

src/index.js

@@ -2,7 +2,6 @@ import { v4 as uuidv4 } from 'uuid';
 import fs from 'node:fs';
 import path from 'node:path';
 import express from 'express';
-import { pipeline } from 'node:stream/promises';
 
 import * as Post from './api/post.cjs';
 import * as Auth from './api/auth.cjs';
@@ -74,37 +73,66 @@ app.get('/callback', function(req, res) {
         access_token = credentials.token;
     }
 
-    (async function post() {
+    let lap = 0;
+
+    let static_image_url = "https://weather.bangkok.go.th/Images/Radar/radarh.jpg";
+    let animated_image_url = "https://dds.bangkok.go.th/Radar/radar_rain.gif";
+
+    let static_radar_path = path.join(__dirname, '/data/static_radar.jpg');
+    let animated_radar_path = path.join(__dirname, '/data/animated_radar.gif');
+    await Fetch.get_image_size(static_image_url);
+
+    if(!fs.existsSync(static_radar_path)) {
+        await Fetch.save_image(static_image_url, static_radar_path);
+    } 
+
+    async function post() {
+        lap += 1; 
+        console.log(lap);
         let raw_date = new Date();
-        let static_radar_path = path.join(__dirname, '/data/static_radar.jpg');
-        let animated_radar_path = path.join(__dirname, '/data/animated_radar.gif');
 
-        let fetch_static_image = await Fetch.get_image("https://weather.bangkok.go.th/Images/Radar/radarh.jpg");
+        let curr_static_image_size = fs.statSync(static_radar_path).size; 
-        await pipeline(
+        let fetch_static_image_size = await Fetch.get_image_size(static_image_url);
-            fetch_static_image[0],
-            fs.createWriteStream(static_radar_path)
-        );
 
-        let fetch_animated_image = await Fetch.get_image("https://dds.bangkok.go.th/Radar/radar_rain.gif");
+        console.log("Current size: " + curr_static_image_size);
-        await pipeline(
+        console.log("Scanned size: " + fetch_static_image_size);
-            fetch_animated_image[0],
-            fs.createWriteStream(animated_radar_path)
-        );
         
-        let static_radar_image_name = `${raw_date.toISOString()}.jpg`;
+        if(fetch_static_image_size != curr_static_image_size) {
-        const upload_radar_image = await Post.create_image(host, access_token, static_radar_image_name, static_radar_path);
+            console.log("File size change detected!");
+            await Fetch.save_image(static_image_url, static_radar_path);
+            await Fetch.save_image(animated_image_url, animated_radar_path);
 
-        let note_caption = `$[x2 Bangkok Raindar Update]\n**${raw_date.toLocaleString('th-TH')}**\nLeft: Current Observation\nRight: 3 hour forecast`
+            // Fetch static image 
-        const post_note = await Post.create_note(
+            let static_radar_image_name = `${raw_date.toISOString()}.jpg`;
-            host, 
+            const upload_static_radar = await Post.create_image(host, access_token, static_radar_image_name, static_radar_path);
-            access_token, 
-            note_caption,
-            [upload_radar_image.id],
-            "public"
-        )
             
-        setInterval(post, 60000);
+            // Fetch animated image 
-    })();
+            let animated_radar_image_name = `${raw_date.toISOString()}.gif`;
+            const upload_gif_radar = await Post.create_image(host, access_token, animated_radar_image_name, animated_radar_path);
+
+            let radar_caption = await Fetch.get_radar_caption();
+            let note_caption = `$[x2 Bangkok Raindar Update]\n**${raw_date.toLocaleString('th-TH')}**\n\n${radar_caption}\n\nLeft: Current Observation\nRight: 3 hour forecast\n\n#bangkok #weather #bangkokweather`
+            const post_note = await Post.create_note(
+                host, 
+                access_token, 
+                note_caption,
+                [upload_static_radar.id, upload_gif_radar.id],
+                "public"
+            )
+            
+            if(post_note.createdNote) {
+                console.log("Note created!");
+            } else {
+                console.log("Note was not created");
+            }
+
+        } else {
+            console.log("No change in data, go on.");
+        } 
+    }
+
+    post();
+    setInterval(post, 30000);
 })();
 
 app.listen(port);