50 lines
1.4 KiB
Plaintext
50 lines
1.4 KiB
Plaintext
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#!/usr/bin/perl
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use strict;
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use warnings;
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use v5.14;
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use DBI;
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update2();
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sub update2 {
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no autovivification qw(fetch);
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my $dbh = DBI->connect("dbi:SQLite:dbname=rss2html.sqlite", "", "");
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$dbh->{sqlite_unicode} = 1;
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my $feeds = $dbh->selectall_arrayref("select * from feeds where update_frequency is not null", { Slice => {} });
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my $seconds_per_week = 86400 * 7;
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for my $feed (@$feeds) {
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print "feed: $feed->{id} $feed->{title}\n";
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my $now = time();
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my $update_time = $now - $feed->{last_update};
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print "\t", "update_time: $update_time\n";
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my $start = $now - 4 * $seconds_per_week;
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my $items = $dbh->selectall_arrayref("select * from items where feed_id=? and issued >= ? order by issued",
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{ Slice => {} },
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$feed->{id}, $start,
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);
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my $first_issued = $items->[0]{issued} // $start;
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my $total_time = $now - $first_issued;
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print "\t", "total_time: $total_time\n";
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my $updates_in_interval = 0;
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for my $item (@$items) {
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my $t = $item->{issued};
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my $dt1 = $now - $t;
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my $dt2 = $dt1 % $seconds_per_week;
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if ($dt2 < $update_time) {
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$updates_in_interval++;
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}
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}
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# normalize to one week
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$updates_in_interval *= $seconds_per_week / $total_time;
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$updates_in_interval += $update_time / $seconds_per_week; # add one update per week
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print "\t", "updates_in_interval: $updates_in_interval\n";
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}
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}
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# vim: tw=0
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