392 行
10 KiB
Crystal
392 行
10 KiB
Crystal
# See http://www.evanmiller.org/how-not-to-sort-by-average-rating.html
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def ci_lower_bound(pos, n)
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if n == 0
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return 0.0
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end
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# z value here represents a confidence level of 0.95
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z = 1.96
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phat = 1.0*pos/n
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return (phat + z*z/(2*n) - z * Math.sqrt((phat*(1 - phat) + z*z/(4*n))/n))/(1 + z*z/n)
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end
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def elapsed_text(elapsed)
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millis = elapsed.total_milliseconds
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return "#{millis.round(2)}ms" if millis >= 1
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"#{(millis * 1000).round(2)}µs"
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end
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def decode_length_seconds(string)
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length_seconds = string.gsub(/[^0-9:]/, "")
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return 0_i32 if length_seconds.empty?
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length_seconds = length_seconds.split(":").map { |x| x.to_i? || 0 }
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length_seconds = [0] * (3 - length_seconds.size) + length_seconds
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length_seconds = Time::Span.new(
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hours: length_seconds[0],
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minutes: length_seconds[1],
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seconds: length_seconds[2]
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).total_seconds.to_i32
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return length_seconds
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end
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def recode_length_seconds(time)
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if time <= 0
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return ""
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else
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time = time.seconds
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text = "#{time.minutes.to_s.rjust(2, '0')}:#{time.seconds.to_s.rjust(2, '0')}"
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if time.total_hours.to_i > 0
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text = "#{time.total_hours.to_i.to_s.rjust(2, '0')}:#{text}"
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end
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text = text.lchop('0')
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return text
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end
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end
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def decode_interval(string : String) : Time::Span
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rawMinutes = string.try &.to_i32?
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if !rawMinutes
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hours = /(?<hours>\d+)h/.match(string).try &.["hours"].try &.to_i32
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hours ||= 0
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minutes = /(?<minutes>\d+)m(?!s)/.match(string).try &.["minutes"].try &.to_i32
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minutes ||= 0
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time = Time::Span.new(hours: hours, minutes: minutes)
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else
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time = Time::Span.new(minutes: rawMinutes)
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end
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return time
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end
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def decode_time(string)
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time = string.try &.to_f?
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if !time
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hours = /(?<hours>\d+)h/.match(string).try &.["hours"].try &.to_f
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hours ||= 0
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minutes = /(?<minutes>\d+)m(?!s)/.match(string).try &.["minutes"].try &.to_f
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minutes ||= 0
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seconds = /(?<seconds>\d+)s/.match(string).try &.["seconds"].try &.to_f
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seconds ||= 0
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millis = /(?<millis>\d+)ms/.match(string).try &.["millis"].try &.to_f
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millis ||= 0
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time = hours * 3600 + minutes * 60 + seconds + millis // 1000
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end
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return time
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end
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def decode_date(string : String)
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# String matches 'YYYY'
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if string.match(/^\d{4}/)
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return Time.utc(string.to_i, 1, 1)
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end
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# Try to parse as format Jul 10, 2000
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begin
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return Time.parse(string, "%b %-d, %Y", Time::Location.local)
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rescue ex
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end
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case string
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when "today"
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return Time.utc
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when "yesterday"
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return Time.utc - 1.day
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else nil # Continue
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end
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# String matches format "20 hours ago", "4 months ago"...
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date = string.split(" ")[-3, 3]
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delta = date[0].to_i
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case date[1]
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when .includes? "second"
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delta = delta.seconds
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when .includes? "minute"
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delta = delta.minutes
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when .includes? "hour"
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delta = delta.hours
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when .includes? "day"
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delta = delta.days
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when .includes? "week"
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delta = delta.weeks
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when .includes? "month"
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delta = delta.months
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when .includes? "year"
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delta = delta.years
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else
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raise "Could not parse #{string}"
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end
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return Time.utc - delta
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end
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def recode_date(time : Time, locale)
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span = Time.utc - time
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if span.total_days > 365.0
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return translate_count(locale, "generic_count_years", span.total_days.to_i // 365)
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elsif span.total_days > 30.0
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return translate_count(locale, "generic_count_months", span.total_days.to_i // 30)
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elsif span.total_days > 7.0
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return translate_count(locale, "generic_count_weeks", span.total_days.to_i // 7)
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elsif span.total_hours > 24.0
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return translate_count(locale, "generic_count_days", span.total_days.to_i)
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elsif span.total_minutes > 60.0
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return translate_count(locale, "generic_count_hours", span.total_hours.to_i)
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elsif span.total_seconds > 60.0
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return translate_count(locale, "generic_count_minutes", span.total_minutes.to_i)
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else
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return translate_count(locale, "generic_count_seconds", span.total_seconds.to_i)
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end
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end
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def number_with_separator(number)
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number.to_s.reverse.gsub(/(\d{3})(?=\d)/, "\\1,").reverse
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end
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def short_text_to_number(short_text : String) : Int64
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matches = /(?<number>\d+(\.\d+)?)\s?(?<suffix>[mMkKbB])?/.match(short_text)
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number = matches.try &.["number"].to_f || 0.0
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case matches.try &.["suffix"].downcase
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when "k" then number *= 1_000
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when "m" then number *= 1_000_000
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when "b" then number *= 1_000_000_000
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end
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return number.to_i64
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rescue ex
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return 0_i64
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end
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def number_to_short_text(number)
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separated = number_with_separator(number).gsub(",", ".").split("")
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text = separated.first(2).join
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if separated[2]? && separated[2] != "."
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text += separated[2]
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end
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text = text.rchop(".0")
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if number // 1_000_000_000 != 0
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text += "B"
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elsif number // 1_000_000 != 0
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text += "M"
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elsif number // 1000 != 0
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text += "K"
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end
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text
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end
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def arg_array(array, start = 1)
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if array.size == 0
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args = "NULL"
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else
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args = [] of String
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(start..array.size + start - 1).each { |i| args << "($#{i})" }
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args = args.join(",")
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end
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return args
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end
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def make_host_url(kemal_config)
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ssl = CONFIG.https_only || kemal_config.ssl
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port = CONFIG.external_port || kemal_config.port
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if ssl
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scheme = "https://"
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else
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scheme = "http://"
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end
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# Add if non-standard port
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if port != 80 && port != 443
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port = ":#{port}"
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else
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port = ""
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end
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if !CONFIG.domain
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return ""
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end
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host = CONFIG.domain.not_nil!.lchop(".")
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return "#{scheme}#{host}#{port}"
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end
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def get_referer(env, fallback = "/", unroll = true)
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referer = env.params.query["referer"]?
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referer ||= env.request.headers["referer"]?
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referer ||= fallback
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referer = URI.parse(referer)
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# "Unroll" nested referrers
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if unroll
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loop do
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if referer.query
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params = HTTP::Params.parse(referer.query.not_nil!)
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if params["referer"]?
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referer = URI.parse(URI.decode_www_form(params["referer"]))
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else
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break
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end
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else
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break
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end
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end
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end
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referer = referer.request_target
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referer = "/" + referer.gsub(/[^\/?@&%=\-_.0-9a-zA-Z]/, "").lstrip("/\\")
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if referer == env.request.path
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referer = fallback
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end
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return referer
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end
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def sha256(text)
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digest = OpenSSL::Digest.new("SHA256")
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digest << text
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return digest.final.hexstring
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end
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def subscribe_pubsub(topic, key)
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case topic
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when .match(/^UC[A-Za-z0-9_-]{22}$/)
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topic = "channel_id=#{topic}"
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when .match(/^(PL|LL|EC|UU|FL|UL|OLAK5uy_)[0-9A-Za-z-_]{10,}$/)
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# There's a couple missing from the above regex, namely TL and RD, which
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# don't have feeds
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topic = "playlist_id=#{topic}"
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else
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# TODO
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end
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time = Time.utc.to_unix.to_s
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nonce = Random::Secure.hex(4)
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signature = "#{time}:#{nonce}"
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body = {
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"hub.callback" => "#{HOST_URL}/feed/webhook/v1:#{time}:#{nonce}:#{OpenSSL::HMAC.hexdigest(:sha1, key, signature)}",
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"hub.topic" => "https://www.youtube.com/xml/feeds/videos.xml?#{topic}",
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"hub.verify" => "async",
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"hub.mode" => "subscribe",
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"hub.lease_seconds" => "432000",
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"hub.secret" => key.to_s,
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}
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return make_client(PUBSUB_URL, &.post("/subscribe", form: body))
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end
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def parse_range(range)
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if !range
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return 0_i64, nil
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end
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ranges = range.lchop("bytes=").split(',')
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ranges.each do |r|
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start_range, end_range = r.split('-')
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start_range = start_range.to_i64? || 0_i64
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end_range = end_range.to_i64?
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return start_range, end_range
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end
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return 0_i64, nil
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end
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def fetch_random_instance
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begin
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instance_api_client = make_client(URI.parse("https://api.invidious.io"))
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# Timeouts
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instance_api_client.connect_timeout = 10.seconds
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instance_api_client.dns_timeout = 10.seconds
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instance_list = JSON.parse(instance_api_client.get("/instances.json").body).as_a
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instance_api_client.close
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rescue Socket::ConnectError | IO::TimeoutError | JSON::ParseException
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instance_list = [] of JSON::Any
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end
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filtered_instance_list = [] of String
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instance_list.each do |data|
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# TODO Check if current URL is onion instance and use .onion types if so.
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if data[1]["type"] == "https"
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# Instances can have statistics disabled, which is an requirement of version validation.
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# as_nil? doesn't exist. Thus we'll have to handle the error raised if as_nil fails.
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begin
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data[1]["stats"].as_nil
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next
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rescue TypeCastError
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end
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# stats endpoint could also lack the software dict.
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next if data[1]["stats"]["software"]?.nil?
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# Makes sure the instance isn't too outdated.
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if remote_version = data[1]["stats"]?.try &.["software"]?.try &.["version"]
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remote_commit_date = remote_version.as_s.match(/\d{4}\.\d{2}\.\d{2}/)
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next if !remote_commit_date
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remote_commit_date = Time.parse(remote_commit_date[0], "%Y.%m.%d", Time::Location::UTC)
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local_commit_date = Time.parse(CURRENT_VERSION, "%Y.%m.%d", Time::Location::UTC)
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next if (remote_commit_date - local_commit_date).abs.days > 30
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begin
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data[1]["monitor"].as_nil
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health = data[1]["monitor"].as_h["dailyRatios"][0].as_h["ratio"]
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filtered_instance_list << data[0].as_s if health.to_s.to_f > 90
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rescue TypeCastError
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# We can't check the health if the monitoring is broken. Thus we'll just add it to the list
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# and move on. Ideally we'll ignore any instance that has broken health monitoring but due to the fact that
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# it's an error that often occurs with all the instances at the same time, we have to just skip the check.
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filtered_instance_list << data[0].as_s
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end
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end
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end
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end
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# If for some reason no instances managed to get fetched successfully then we'll just redirect to redirect.invidious.io
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if filtered_instance_list.size == 0
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return "redirect.invidious.io"
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end
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return filtered_instance_list.sample(1)[0]
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end
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def reduce_uri(uri : URI | String, max_length : Int32 = 50, suffix : String = "…") : String
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str = uri.to_s.sub(/^https?:\/\//, "")
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if str.size > max_length
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str = "#{str[0, max_length]}#{suffix}"
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end
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return str
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end
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