Create crawl.js

crawl.js

@@ -0,0 +1,44 @@
+import {exists} from "https://deno.land/std/fs/mod.ts";
+
+let subreddits = JSON.parse(await Deno.writeTextFile(`./top-5k-subreddits.json`);
+
+while(1) {
+
+  await new Promise(r => setTimeout(r, 1000));
+
+  try {
+    
+    let i = -1;
+    for(let s of subreddits) {
+      i++;
+      if(await exists(`./post-data-by-subreddit/${s}.json`)) continue;
+      let after = "";
+      let posts = [];
+      while(true) {
+        let url = `https://www.reddit.com/r/${s}/top.json?t=all&limit=100&after=${after}`;
+        console.log(i, url);
+        let result = await fetch(url).then(r => r.json()).catch(e => (console.error(e), false));
+        let data = result.data;
+        
+        if(!data.children) console.log(JSON.stringify(data));
+
+        for(let post of data.children) {
+          delete post.data.all_awardings; // awards take up a lot of space (e.g. 20MB with vs 4MB without for r/funny)
+        }
+        posts.push(...data.children);
+        after = data.after;
+        if(!after) break;
+        if(!data.children.find(c => c.data.score > 5)) break;
+      }
+      await Deno.writeTextFile(`./post-data-by-subreddit/${s}.json`, JSON.stringify(posts));
+    }
+
+    console.log("FINISHED.");
+    break;
+
+  } catch(e) {
+    console.error(e);
+    await new Promise(r => setTimeout(r, 1000*60*15));
+  }
+
+}