forked from mirrors/firefish
53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
export class noteRepliesFunction1658656633972 {
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name = "noteRepliesFunction1658656633972";
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async up(queryRunner) {
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await queryRunner.query(`
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CREATE OR REPLACE FUNCTION note_replies(start_id varchar, max_depth integer, max_breadth integer) RETURNS TABLE (id VARCHAR) AS
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$$
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SELECT DISTINCT id FROM (
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WITH RECURSIVE tree (id, ancestors, depth) AS (
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SELECT start_id, '{}'::VARCHAR[], 0
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UNION
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SELECT
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note.id,
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CASE
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WHEN note."replyId" = tree.id THEN tree.ancestors || note."replyId"
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ELSE tree.ancestors || note."renoteId"
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END,
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depth + 1
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FROM note, tree
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WHERE (
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note."replyId" = tree.id
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OR
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(
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-- get renotes but not pure renotes
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note."renoteId" = tree.id
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AND
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(
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note.text IS NOT NULL
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OR
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CARDINALITY(note."fileIds") != 0
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OR
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note."hasPoll" = TRUE
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)
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)
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) AND depth < max_depth
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)
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SELECT
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id,
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-- apply the limit per node
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row_number() OVER (PARTITION BY ancestors[array_upper(ancestors, 1)]) AS nth_child
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FROM tree
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WHERE depth > 0
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) AS recursive WHERE nth_child < max_breadth
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$$
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LANGUAGE SQL
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`);
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}
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async down(queryRunner) {
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await queryRunner.query("DROP FUNCTION note_replies");
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}
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}
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