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discourse/plugins/chat/app/views/user_notifications/chat_summary.text.erb

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DEV: Move `discourse-chat` to the core repo. (#18776) As part of this move, we are also renaming `discourse-chat` to `chat`.
2022-11-02 21:41:30 +08:00
<%- site_link = raw(@markdown_linker.create(@site_name, '/')) %>
PERF: fix performance of chat email notifications When chat is enabled, there's a scheduled job that runs every 5 minutes to check whether we need to send a "chat summary" email to users with unread chat messages or mentions. On Discourse with a large number of users, the query used wasn't optimal and sometimes taking minutes. Which isn't good when the query is called every 5 minutes 😬 This PR reworks the query in `Chat::Mailer.send_unread_mentions_summary`. Instead of starting from the `users` table, it starts from the `user_chat_channel_memberships` table which is the main piece tying everything together. The new query is mostly similar to the previous one, with some bug fixes (like ensuring the user has `allow_private_messages` enabled for direct messages) and is also slightly simpler since it doesn't keep track of the `memberships_with_unread_messages` anymore. That part has been moved to the `user_notifications.chat_summary` email method. The `UserEmailExtension` has been deleted since that was using to N+1 update the `user_chat_channel_memberships.last_unread_mention_when_emailed_it`(quite a mouthful 😛) but that's now done directly in the `user_notifications.chat_summary` email method. The "plat de résistance" of that PR - the `user_notifications.chat_summary` method has been re-worked for improved performances 🚀 Instead of doing everything in one query, it does 4 tiny ones. - One to retrieve the list of unread mentions (@something) in "category" channels - One to retrieve the list of unread messages in "direct message" channels (aka. 1-1 and group discussions) - One to load all the chat messages for each "category" channels from the last unread mention - One to load all the chat messages for each "direct message" channels from the last unread message All the specs for both `Chat::Mailer` and `UserNotification.chat_summary` have been rewriten for easier comprehension and faster execution (mostly by not using chat services which makes the specs go 10x slower...) Internal ref - t/129848
2024-06-08 06:20:37 +08:00
<%= t('user_notifications.chat_summary.description', count: @count,) %>
<%= raw(@markdown_linker.create(t("user_notifications.chat_summary.view_messages", count: @count), "/chat")) %>
DEV: Move `discourse-chat` to the core repo. (#18776) As part of this move, we are also renaming `discourse-chat` to `chat`.
2022-11-02 21:41:30 +08:00
<%- if @unsubscribe_link %>
<%= raw(t :'user_notifications.chat_summary.unsubscribe',
site_link: site_link,
email_preferences_link: @markdown_linker.create(t('user_notifications.chat_summary.your_chat_settings'), @preferences_path),
unsubscribe_link: @markdown_linker.create(t('user_notifications.digest.click_here'), @unsubscribe_link)) %>
<%- else %>
<%= raw(t :'user_notifications.chat_summary.unsubscribe_no_link',
site_link: site_link,
email_preferences_link: @markdown_linker.create(t('user_notifications.chat_summary.your_chat_settings'), @preferences_path)) %>
<%- end %>
PERF: fix performance of chat email notifications When chat is enabled, there's a scheduled job that runs every 5 minutes to check whether we need to send a "chat summary" email to users with unread chat messages or mentions. On Discourse with a large number of users, the query used wasn't optimal and sometimes taking minutes. Which isn't good when the query is called every 5 minutes 😬 This PR reworks the query in `Chat::Mailer.send_unread_mentions_summary`. Instead of starting from the `users` table, it starts from the `user_chat_channel_memberships` table which is the main piece tying everything together. The new query is mostly similar to the previous one, with some bug fixes (like ensuring the user has `allow_private_messages` enabled for direct messages) and is also slightly simpler since it doesn't keep track of the `memberships_with_unread_messages` anymore. That part has been moved to the `user_notifications.chat_summary` email method. The `UserEmailExtension` has been deleted since that was using to N+1 update the `user_chat_channel_memberships.last_unread_mention_when_emailed_it`(quite a mouthful 😛) but that's now done directly in the `user_notifications.chat_summary` email method. The "plat de résistance" of that PR - the `user_notifications.chat_summary` method has been re-worked for improved performances 🚀 Instead of doing everything in one query, it does 4 tiny ones. - One to retrieve the list of unread mentions (@something) in "category" channels - One to retrieve the list of unread messages in "direct message" channels (aka. 1-1 and group discussions) - One to load all the chat messages for each "category" channels from the last unread mention - One to load all the chat messages for each "direct message" channels from the last unread message All the specs for both `Chat::Mailer` and `UserNotification.chat_summary` have been rewriten for easier comprehension and faster execution (mostly by not using chat services which makes the specs go 10x slower...) Internal ref - t/129848
2024-06-08 06:20:37 +08:00
<%= raw(@markdown_linker.references) %>
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