2020-01-12 12:50:21 +00:00
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const constants = require("./constants")
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const {request} = require("./utils/request")
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const {extractSharedData} = require("./utils/body")
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2020-01-18 15:38:14 +00:00
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const {TtlCache, RequestCache} = require("./cache")
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require("./testimports")(constants, request, extractSharedData, RequestCache)
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2020-01-12 12:50:21 +00:00
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2020-01-18 15:38:14 +00:00
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const requestCache = new RequestCache(constants.resource_cache_time)
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/** @type {import("./cache").TtlCache<import("./structures/TimelineImage")>} */
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const timelineImageCache = new TtlCache(constants.resource_cache_time)
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2020-01-12 12:50:21 +00:00
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function fetchUser(username) {
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2020-01-18 15:38:14 +00:00
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return requestCache.getOrFetch("user/"+username, () => {
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2020-01-12 12:50:21 +00:00
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return request(`https://www.instagram.com/${username}/`).then(res => res.text()).then(text => {
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2020-01-18 15:38:14 +00:00
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// require down here or have to deal with require loop. require cache will take care of it anyway.
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// User -> Timeline -> TimelineImage -> collectors -/> User
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const User = require("./structures/User")
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2020-01-12 12:50:21 +00:00
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const sharedData = extractSharedData(text)
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const user = new User(sharedData.entry_data.ProfilePage[0].graphql.user)
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return user
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})
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})
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}
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/**
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* @param {string} userID
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* @param {string} after
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* @returns {Promise<import("./types").PagedEdges<import("./types").GraphImage>>}
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*/
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function fetchTimelinePage(userID, after) {
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const p = new URLSearchParams()
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p.set("query_hash", constants.external.timeline_query_hash)
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p.set("variables", JSON.stringify({
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id: userID,
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first: constants.external.timeline_fetch_first,
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after: after
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}))
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2020-01-18 15:38:14 +00:00
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return requestCache.getOrFetchPromise("page/"+after, () => {
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2020-01-12 12:50:21 +00:00
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return request(`https://www.instagram.com/graphql/query/?${p.toString()}`).then(res => res.json()).then(root => {
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/** @type {import("./types").PagedEdges<import("./types").GraphImage>} */
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const timeline = root.data.user.edge_owner_to_timeline_media
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return timeline
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})
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})
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}
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2020-01-18 15:38:14 +00:00
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/**
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* @param {string} shortcode
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* @param {boolean} needDirect
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* @returns {Promise<import("./structures/TimelineImage")>}
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*/
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function fetchShortcode(shortcode, needDirect = false) {
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const attempt = timelineImageCache.get(shortcode)
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if (attempt && (attempt.isDirect === true || needDirect === false)) return Promise.resolve(attempt)
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// example actual query from web:
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// query_hash=2b0673e0dc4580674a88d426fe00ea90&variables={"shortcode":"xxxxxxxxxxx","child_comment_count":3,"fetch_comment_count":40,"parent_comment_count":24,"has_threaded_comments":true}
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// we will not include params about comments, which means we will not receive comments, but everything else should still work fine
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const p = new URLSearchParams()
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p.set("query_hash", constants.external.shortcode_query_hash)
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p.set("variables", JSON.stringify({shortcode}))
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return requestCache.getOrFetchPromise("shortcode/"+shortcode, () => {
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return request(`https://www.instagram.com/graphql/query/?${p.toString()}`).then(res => res.json()).then(root => {
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/** @type {import("./types").GraphImage} */
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const data = root.data.shortcode_media
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return createShortcodeFromData(data, true)
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})
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})
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}
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/**
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* @param {import("./types").GraphImage} data
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* @param {boolean} isDirect
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*/
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function createShortcodeFromData(data, isDirect) {
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const existing = timelineImageCache.get(data.shortcode)
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if (existing) {
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existing.updateData(data, isDirect)
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return existing
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} else {
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// require down here or have to deal with require loop. require cache will take care of it anyway.
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// TimelineImage -> collectors -/> TimelineImage
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const TimelineImage = require("./structures/TimelineImage")
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const timelineImage = new TimelineImage(data, false)
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timelineImageCache.set(data.shortcode, timelineImage)
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return timelineImage
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}
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}
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2020-01-12 12:50:21 +00:00
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module.exports.fetchUser = fetchUser
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module.exports.fetchTimelinePage = fetchTimelinePage
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2020-01-18 15:38:14 +00:00
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module.exports.fetchShortcode = fetchShortcode
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module.exports.createShortcodeFromData = createShortcodeFromData
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module.exports.requestCache = requestCache
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module.exports.timelineImageCache = timelineImageCache
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