52 lines
1.6 KiB
Ruby
52 lines
1.6 KiB
Ruby
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# frozen_string_literal: true
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class BackfillThreadMemberships < ActiveRecord::Migration[7.0]
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def up
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thread_tracking_notification_level = 2
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sql = <<~SQL
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INSERT INTO user_chat_thread_memberships(
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user_id,
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thread_id,
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notification_level,
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last_read_message_id,
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created_at,
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updated_at
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)
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SELECT
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thread_participant_stats.user_id,
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thread_participant_stats.thread_id,
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#{thread_tracking_notification_level},
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(
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SELECT id FROM chat_messages
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WHERE thread_id = thread_participant_stats.thread_id
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AND deleted_at IS NULL
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ORDER BY created_at DESC, id DESC
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LIMIT 1
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),
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NOW(),
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NOW()
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FROM (
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SELECT chat_messages.thread_id, chat_messages.user_id
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FROM chat_messages
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INNER JOIN chat_threads ON chat_threads.id = chat_messages.thread_id
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WHERE chat_messages.thread_id IS NOT NULL
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GROUP BY chat_messages.thread_id, chat_messages.user_id
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ORDER BY chat_messages.thread_id ASC, chat_messages.user_id ASC
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) AS thread_participant_stats
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INNER JOIN users ON users.id = thread_participant_stats.user_id
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LEFT JOIN user_chat_thread_memberships ON user_chat_thread_memberships.thread_id = thread_participant_stats.thread_id
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AND user_chat_thread_memberships.user_id = thread_participant_stats.user_id
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WHERE user_chat_thread_memberships IS NULL
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ORDER BY user_chat_thread_memberships.thread_id ASC
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ON CONFLICT DO NOTHING;
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SQL
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execute(sql)
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end
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def down
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raise ActiveRecord::IrreversibleMigration
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end
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end
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