20200604150318_migrate_seen_to_unread_in_chat_message_references.exs
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20200604150318_migrate_seen_to_unread_in_chat_message_references.exs
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	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Repo.Migrations.MigrateSeenToUnreadInChatMessageReferences do
	use Ecto.Migration

	def change do
	drop(
	index(:chat_message_references, [:chat_id],
	where: "seen = false",
	name: "unseen_messages_count_index"
	)
	)

	alter table(:chat_message_references) do
	add(:unread, :boolean, default: true)
	end

	execute("update chat_message_references set unread = not seen")

	alter table(:chat_message_references) do
	modify(:unread, :boolean, default: true, null: false)
	remove(:seen, :boolean, default: false, null: false)
	end

	create(
	index(:chat_message_references, [:chat_id],
	where: "unread = true",
	name: "unread_messages_count_index"
	)
	)
	end
	end

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