First release

src/lib/collectors.js

@@ -0,0 +1,43 @@
+const constants = require("./constants")
+const {request} = require("./utils/request")
+const {extractSharedData} = require("./utils/body")
+const InstaCache = require("./cache")
+const {User} = require("./structures")
+require("./testimports")(constants, request, extractSharedData, InstaCache, User)
+
+const cache = new InstaCache(600e3)
+
+function fetchUser(username) {
+	return cache.getOrFetch("user/"+username, () => {
+		return request(`https://www.instagram.com/${username}/`).then(res => res.text()).then(text => {
+			const sharedData = extractSharedData(text)
+			const user = new User(sharedData.entry_data.ProfilePage[0].graphql.user)
+			return user
+		})
+	})
+}
+
+/**
+ * @param {string} userID
+ * @param {string} after
+ * @returns {Promise<import("./types").PagedEdges<import("./types").GraphImage>>}
+ */
+function fetchTimelinePage(userID, after) {
+	const p = new URLSearchParams()
+	p.set("query_hash", constants.external.timeline_query_hash)
+	p.set("variables", JSON.stringify({
+		id: userID,
+		first: constants.external.timeline_fetch_first,
+		after: after
+	}))
+	return cache.getOrFetchPromise("page/"+after, () => {
+		return request(`https://www.instagram.com/graphql/query/?${p.toString()}`).then(res => res.json()).then(root => {
+			/** @type {import("./types").PagedEdges<import("./types").GraphImage>} */
+			const timeline = root.data.user.edge_owner_to_timeline_media
+			return timeline
+		})
+	})
+}
+
+module.exports.fetchUser = fetchUser
+module.exports.fetchTimelinePage = fetchTimelinePage