65 lines
1.6 KiB
Ruby
Executable file
65 lines
1.6 KiB
Ruby
Executable file
#!/usr/bin/env ruby
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# frozen_string_literal: true
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require 'connection_pool'
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require 'pg'
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require 'sinatra'
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$DB_POOL = ConnectionPool.new size: 5, timeout: 5 do
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PG.connect(
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host: 'pg.causa-arcana.com',
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dbname: 'leqsikoni',
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user: 'leqsikoni',
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password: 'ggeucene3ou7mqh2upehhm52tfp5bkcj',
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).tap do |conn|
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conn.type_map_for_results = PG::BasicTypeMapForResults.new conn
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end
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end
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before do
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headers 'X-Frame-Options' => ''
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end
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get '/examples' do
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$DB_POOL.with do |db_conn|
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ids =
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case params[:ids]
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when Array then params[:ids].map { |id| Integer id }
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when String then params[:ids].split(',').map { |id| Integer id }
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else raise 'Invalid param "ids"'
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end
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examples = db_conn.exec_params(
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(
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<<~SQL
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SELECT
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array_agg(foo.value ORDER BY foo.language_id DESC)::text[] AS values
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FROM example_texts foo
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INNER JOIN (
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SELECT example_id, language_id, MIN(index) as min_index
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FROM example_texts
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WHERE
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example_id = ANY($1)
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AND
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(language_id = 5 OR language_id = 2)
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GROUP BY example_id, language_id
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) bar
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ON
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foo.example_id = bar.example_id AND
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foo.language_id = bar.language_id AND
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foo.index = bar.min_index
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GROUP BY foo.example_id
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SQL
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),
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[PG::TextEncoder::Array.new.encode(ids)],
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).map { |row| row['values'] }
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<<~HTML
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<ul>
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#{examples.map do |example|
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"<li>#{example[0]} — #{example[1]}</li>"
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end.join}
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</ul>
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HTML
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end
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end
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