nitter/src/api.nim
2019-06-24 05:50:43 +02:00

183 lines
5 KiB
Nim

import httpclient, asyncdispatch, htmlparser, times
import sequtils, strutils, strformat, json, xmltree, uri
import nimquery, regex
import ./types, ./parser
const
agent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"
auth = "Bearer AAAAAAAAAAAAAAAAAAAAAPYXBAAAAAAACLXUNDekMxqa8h%2F40K4moUkGsoc%3DTYfbDKbT3jJPCEVnMYqilB28NHfOPqkca3qaAxGfsyKCs0wRbw"
base = parseUri("https://twitter.com/")
apiBase = parseUri("https://api.twitter.com/1.1/")
timelineUrl = "i/profiles/show/$1/timeline/tweets?include_available_features=1&include_entities=1&include_new_items_bar=true"
profilePopupUrl = "i/profiles/popup"
profileIntentUrl = "intent/user"
tweetUrl = "i/status/"
videoUrl = "videos/tweet/config/$1.json"
tokenUrl = "guest/activate.json"
var
token = ""
tokenUpdated: Time
tokenLifetime = initDuration(minutes=10)
template newClient() {.dirty.} =
var client = newAsyncHttpClient()
defer: client.close()
client.headers = headers
proc fetchHtml(url: Uri; headers: HttpHeaders; jsonKey = ""): Future[XmlNode] {.async.} =
newClient()
var resp = ""
try:
resp = await client.getContent($url)
except:
return nil
if jsonKey.len > 0:
let json = parseJson(resp)[jsonKey].str
return parseHtml(json)
else:
return parseHtml(resp)
proc fetchJson(url: Uri; headers: HttpHeaders): Future[JsonNode] {.async.} =
newClient()
var resp = ""
try:
resp = await client.getContent($url)
except:
return nil
return parseJson(resp)
proc getGuestToken(): Future[string] {.async.} =
if getTime() - tokenUpdated < tokenLifetime:
return token
tokenUpdated = getTime()
let headers = newHttpHeaders({
"Accept": "application/json, text/javascript, */*; q=0.01",
"Referer": $base,
"User-Agent": agent,
"Authorization": auth
})
newClient()
let
url = apibase / tokenUrl
json = parseJson(await client.postContent($url))
result = json["guest_token"].to(string)
token = result
proc getVideo*(tweet: Tweet; token: string) {.async.} =
if not tweet.video.isSome: return
let headers = newHttpHeaders({
"Accept": "application/json, text/javascript, */*; q=0.01",
"Referer": tweet.link,
"User-Agent": agent,
"Authorization": auth,
"x-guest-token": token
})
let
url = apiBase / (videoUrl % tweet.id)
json = await fetchJson(url, headers)
tweet.video = some(parseVideo(json))
proc getVideos*(tweets: Tweets) {.async.} =
var token = await getGuestToken()
var videoFuts: seq[Future[void]]
for tweet in tweets.filterIt(it.video.isSome):
videoFuts.add getVideo(tweet, token)
await all(videoFuts)
proc getConversationVideos*(convo: Conversation) {.async.} =
var token = await getGuestToken()
var futs: seq[Future[void]]
futs.add getVideo(convo.tweet, token)
futs.add getVideos(convo.before)
futs.add getVideos(convo.after)
futs.add convo.replies.mapIt(getVideos(it))
await all(futs)
proc getProfileFallback(username: string; headers: HttpHeaders): Future[Profile] {.async.} =
let
url = base / profileIntentUrl ? {"screen_name": username}
html = await fetchHtml(url, headers)
result = parseIntentProfile(html)
proc getProfile*(username: string): Future[Profile] {.async.} =
let headers = newHttpHeaders({
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9",
"Referer": $(base / username),
"User-Agent": agent,
"X-Twitter-Active-User": "yes",
"X-Requested-With": "XMLHttpRequest",
"Accept-Language": "en-US,en;q=0.9"
})
let
params = {
"screen_name": username,
"wants_hovercard": "true",
"_": $(epochTime().int)
}
url = base / profilePopupUrl ? params
html = await fetchHtml(url, headers, jsonKey="html")
if not html.querySelector(".ProfileCard-sensitiveWarningContainer").isNil:
return await getProfileFallback(username, headers)
result = parsePopupProfile(html)
proc getTimeline*(username: string; after=""): Future[Tweets] {.async.} =
let headers = newHttpHeaders({
"Accept": "application/json, text/javascript, */*; q=0.01",
"Referer": $(base / username),
"User-Agent": agent,
"X-Twitter-Active-User": "yes",
"X-Requested-With": "XMLHttpRequest",
"Accept-Language": "en-US,en;q=0.9"
})
var url = timelineUrl % username
if after.len > 0:
url &= "&max_position=" & after
let html = await fetchHtml(base / url, headers, jsonKey="items_html")
result = parseTweets(html)
await getVideos(result)
proc getTweet*(id: string): Future[Conversation] {.async.} =
let headers = newHttpHeaders({
"Accept": "application/json, text/javascript, */*; q=0.01",
"Referer": $base,
"User-Agent": agent,
"X-Twitter-Active-User": "yes",
"X-Requested-With": "XMLHttpRequest",
"Accept-Language": "en-US,en;q=0.9",
"pragma": "no-cache",
"x-previous-page-name": "profile"
})
let
url = base / tweetUrl / id
html = await fetchHtml(url, headers)
result = parseConversation(html)
await getConversationVideos(result)