Jellystat/backend/migrations/051_fs_most_popular_items.js

exports.up = async function(knex) {
    try
    {
       await knex.schema.raw(`
       DROP FUNCTION IF EXISTS public.fs_most_popular_items(integer, text);

        CREATE OR REPLACE FUNCTION public.fs_most_popular_items(
        	days integer,
        	itemtype text)
            RETURNS TABLE(unique_viewers bigint, latest_activity_date timestamp with time zone, "Name" text, "Id" text, "PrimaryImageHash" text, archived boolean)
            LANGUAGE 'plpgsql'
            COST 100
            VOLATILE PARALLEL UNSAFE
            ROWS 1000

        AS $BODY$
              BEGIN
                RETURN QUERY
                SELECT
                    t.unique_viewers,
                    t.latest_activity_date,
                    i."Name",
                    i."Id",
                    i."PrimaryImageHash",
        			i.archived
                FROM (
                    SELECT
                        jf_playback_activity."NowPlayingItemId",
                        count(DISTINCT jf_playback_activity."UserId") AS unique_viewers,
                        latest_activity_date.latest_date AS latest_activity_date
                    FROM
                        jf_playback_activity
                        JOIN (
                            SELECT
                                jf_playback_activity_1."NowPlayingItemId",
                                max(jf_playback_activity_1."ActivityDateInserted") AS latest_date
                            FROM
                                jf_playback_activity jf_playback_activity_1
                            GROUP BY jf_playback_activity_1."NowPlayingItemId"
                        ) latest_activity_date
                        ON jf_playback_activity."NowPlayingItemId" = latest_activity_date."NowPlayingItemId"
                    WHERE
                        jf_playback_activity."ActivityDateInserted" BETWEEN CURRENT_DATE - MAKE_INTERVAL(days => days) and NOW()
                    GROUP BY
                        jf_playback_activity."NowPlayingItemId", latest_activity_date.latest_date
                ) t
                JOIN jf_library_items i
                    ON t."NowPlayingItemId" = i."Id"
                    AND i."Type" = itemtype
                ORDER BY
                    t.unique_viewers DESC, t.latest_activity_date DESC;
              END;

        $BODY$;`);

  }catch (error) {
    console.error(error);
  }
  };

  exports.down = async function(knex) {
    try {
        await knex.schema.raw(`
        DROP FUNCTION IF EXISTS public.fs_most_popular_items(integer, text);

        CREATE OR REPLACE FUNCTION public.fs_most_popular_items(
        	days integer,
        	itemtype text)
            RETURNS TABLE(unique_viewers bigint, latest_activity_date timestamp with time zone, "Name" text, "Id" text, "PrimaryImageHash" text)
            LANGUAGE 'plpgsql'
            COST 100
            VOLATILE PARALLEL UNSAFE
            ROWS 1000

        AS $BODY$
              BEGIN
                RETURN QUERY
                SELECT
                    t.unique_viewers,
                    t.latest_activity_date,
                    i."Name",
                    i."Id",
                    i."PrimaryImageHash"
                FROM (
                    SELECT
                        jf_playback_activity."NowPlayingItemId",
                        count(DISTINCT jf_playback_activity."UserId") AS unique_viewers,
                        latest_activity_date.latest_date AS latest_activity_date
                    FROM
                        jf_playback_activity
                        JOIN (
                            SELECT
                                jf_playback_activity_1."NowPlayingItemId",
                                max(jf_playback_activity_1."ActivityDateInserted") AS latest_date
                            FROM
                                jf_playback_activity jf_playback_activity_1
                            GROUP BY jf_playback_activity_1."NowPlayingItemId"
                        ) latest_activity_date
                        ON jf_playback_activity."NowPlayingItemId" = latest_activity_date."NowPlayingItemId"
                    WHERE
                        jf_playback_activity."ActivityDateInserted" BETWEEN CURRENT_DATE - MAKE_INTERVAL(days => days) and NOW()
                    GROUP BY
                        jf_playback_activity."NowPlayingItemId", latest_activity_date.latest_date
                ) t
                JOIN jf_library_items i
                    ON t."NowPlayingItemId" = i."Id"
                    AND i."Type" = itemtype
                ORDER BY
                    t.unique_viewers DESC, t.latest_activity_date DESC;
              END;

        $BODY$;`);
    } catch (error) {
      console.error(error);
    }
  };