Add primitive postgres support

This commit is contained in:
Omar Roth 2017-11-29 21:49:26 -06:00
parent 383ed8b209
commit 8d6de7deba
5 changed files with 106 additions and 31 deletions

36
invidious.sql Normal file
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@ -0,0 +1,36 @@
-- Table: public.invidious
-- DROP TABLE public.invidious;
CREATE TABLE public.invidious
(
last_updated timestamp with time zone,
video_id text COLLATE pg_catalog."default" NOT NULL,
video_info text COLLATE pg_catalog."default",
video_html text COLLATE pg_catalog."default",
views bigint,
likes integer,
dislikes integer,
rating double precision,
CONSTRAINT invidious_pkey PRIMARY KEY (video_id)
)
WITH (
OIDS = FALSE
)
TABLESPACE pg_default;
ALTER TABLE public.invidious
OWNER to omar;
GRANT ALL ON TABLE public.invidious TO kemal;
GRANT ALL ON TABLE public.invidious TO omar;
-- Index: invidious_video_id_idx
-- DROP INDEX public.invidious_video_id_idx;
CREATE INDEX invidious_video_id_idx
ON public.invidious USING btree
(video_id COLLATE pg_catalog."default")
TABLESPACE pg_default;

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@ -6,7 +6,7 @@ shards:
kemal:
github: kemalcr/kemal
version: 0.21.0
commit: 8cb9770ec3c6cf5897e644229dad8d0b5c360941
kilt:
github: jeromegn/kilt
@ -14,7 +14,7 @@ shards:
pg:
github: will/crystal-pg
version: 0.13.4
commit: cafe58314bbbf0e6273963b1447e1c2fbeaf41ff
radix:
github: luislavena/radix

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@ -11,9 +11,11 @@ targets:
dependencies:
kemal:
github: kemalcr/kemal
branch: master
pg:
github: will/crystal-pg
branch: crystalv024
crystal: 0.23.1
crystal: 0.24.0
license: MIT

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@ -3,6 +3,7 @@ require "json"
require "kemal"
require "pg"
require "xml"
require "time"
class AdaptiveFmts
JSON.mapping(
@ -121,29 +122,73 @@ class VideoInfo
)
end
class Record
end
macro templated(filename)
render "src/views/#{{{filename}}}.ecr", "src/views/layout.ecr"
end
pg = DB.open "postgres://kemal:kemal@localhost:5432/invidious"
context = OpenSSL::SSL::Context::Client.insecure
# client = HTTP::Client.new("www.youtube.com", 443, context)
# video_id = "Vufba_ZcoR0"
# video_info = client.get("/get_video_info?video_id=#{video_id}&el=info&ps=default&eurl=&gl=US&hl=en").body
# p VideoInfo.from_json(video_info)
get "/" do |env|
templated "index"
end
def update_record(context, pg, video_id)
client = HTTP::Client.new("www.youtube.com", 443, context)
video_info = client.get("/get_video_info?video_id=#{video_id}&el=info&ps=default&eurl=&gl=US&hl=en").body
info = HTTP::Params.parse(video_info)
video_html = client.get("/watch?v=#{video_id}").body
html = XML.parse(video_html)
views = info["view_count"]
rating = info["avg_rating"].to_f64
like = html.xpath_node(%q(//button[@title="I like this"]/span))
if like
likes = like.content.delete(",").to_i
else
likes = 1
end
# css query [title = "I like this"] > span
# css query [title = "I dislike this"] > span
dislike = html.xpath_node(%q(//button[@title="I dislike this"]/span))
if dislike
dislikes = dislike.content.delete(",").to_i
else
dislikes = 1
end
pg.exec("update invidious set last_updated = $1, video_info = $2, video_html = $3, views = $4, likes = $5,\
dislikes = $6, rating = $7 where video_id = $8",
Time.now, video_info, video_html, views, likes, dislikes, rating, video_id)
return {Time.now, video_id, video_info, video_html, views, likes, dislikes, rating}
end
get "/watch/:video_id" do |env|
video_id = env.params.url["video_id"]
client = HTTP::Client.new("www.youtube.com", 443, context)
video_info = client.get("/get_video_info?video_id=#{video_id}&el=info&ps=default&eurl=&gl=US&hl=en").body
video_info = HTTP::Params.parse(video_info)
pageContent = client.get("/watch?v=#{video_id}").body
doc = XML.parse(pageContent)
# last_updated, video_id, video_info, video_html, views, likes, dislikes, rating
video_record = pg.query_one?("select * from invidious where video_id = $1",
video_id,
as: {Time, String, String, String, Int64, Int32, Int32, Float64})
# If record was last updated less than 5 minutes ago, use data, otherwise refresh
if video_record.nil?
video_record = update_record(context, pg, video_id)
elsif Time.now.epoch - video_record[0].epoch > 300
video_record = update_record(context, pg, video_id)
end
video_info = HTTP::Params.parse(video_record[2])
video_html = XML.parse(video_record[3])
views = video_record[4]
likes = video_record[5]
dislikes = video_record[6]
rating = video_record[7]
fmt_stream = [] of HTTP::Params
video_info["url_encoded_fmt_stream_map"].split(",") do |string|
@ -151,24 +196,16 @@ get "/watch/:video_id" do |env|
end
fmt_stream.reverse! # We want lowest quality first
# css query [title="I like this"] > span
likes = doc.xpath_node(%q(//button[@title="I like this"]/span))
if likes
likes = likes.content.delete(",").to_i
else
likes = 1
end
# css query [title="I dislike this"] > span
dislikes = doc.xpath_node(%q(//button[@title="I dislike this"]/span))
if dislikes
dislikes = dislikes.content.delete(",").to_i
else
dislikes = 1
end
likes = likes.to_f
dislikes = dislikes.to_f
views = views.to_f
engagement = (((dislikes + likes)*100)/views).significant(2)
calculated_rating = likes/(likes + dislikes) * 4 + 1
engagement = ((dislikes.to_f32 + likes.to_f32)*100 / video_info["view_count"].to_f32).significant(2)
calculated_rating = likes.to_f32/(likes.to_f32 + dislikes.to_f32)*4 + 1
likes = likes.to_s
dislikes = dislikes.to_s
views = views.to_s
templated "watch"
end

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@ -11,8 +11,8 @@
<p>-&nbsp; <%= dislikes %></p>
</div>
<div class="pure-u-1 pure-u-md-3-5">
<p>Views : <%= video_info["view_count"] %></p>
<p>Rating : <%= video_info["avg_rating"] %></p>
<p>Views : <%= views %></p>
<p>Rating : <%= rating %></p>
<p>Calculated Rating : <%= calculated_rating %></p>
<p>Engagement : <%= engagement %>%</p>
</div>