feat(coderd): add endpoint to list provisioner jobs (#16029)

Closes #15190
Updates #15084

coderd/database/queries/provisionerjobs.sql

@@ -87,6 +87,68 @@ LEFT JOIN
 WHERE
 	pj.id = ANY(@ids :: uuid [ ]);
 
+-- name: GetProvisionerJobsByOrganizationAndStatusWithQueuePositionAndProvisioner :many
+WITH pending_jobs AS (
+    SELECT
+        id, created_at
+    FROM
+        provisioner_jobs
+    WHERE
+        started_at IS NULL
+    AND
+        canceled_at IS NULL
+    AND
+        completed_at IS NULL
+    AND
+        error IS NULL
+),
+queue_position AS (
+    SELECT
+        id,
+        ROW_NUMBER() OVER (ORDER BY created_at ASC) AS queue_position
+    FROM
+        pending_jobs
+),
+queue_size AS (
+	SELECT COUNT(*) AS count FROM pending_jobs
+)
+SELECT
+	sqlc.embed(pj),
+    COALESCE(qp.queue_position, 0) AS queue_position,
+    COALESCE(qs.count, 0) AS queue_size,
+	-- Use subquery to utilize ORDER BY in array_agg since it cannot be
+	-- combined with FILTER.
+	(
+		SELECT
+			-- Order for stable output.
+			array_agg(pd.id ORDER BY pd.created_at ASC)::uuid[]
+		FROM
+			provisioner_daemons pd
+		WHERE
+			-- See AcquireProvisionerJob.
+			pj.started_at IS NULL
+			AND pj.organization_id = pd.organization_id
+			AND pj.provisioner = ANY(pd.provisioners)
+			AND provisioner_tagset_contains(pd.tags, pj.tags)
+	) AS available_workers
+FROM
+	provisioner_jobs pj
+LEFT JOIN
+	queue_position qp ON qp.id = pj.id
+LEFT JOIN
+	queue_size qs ON TRUE
+WHERE
+	(sqlc.narg('organization_id')::uuid IS NULL OR pj.organization_id = @organization_id)
+	AND (COALESCE(array_length(@status::provisioner_job_status[], 1), 0) = 0 OR pj.job_status = ANY(@status::provisioner_job_status[]))
+GROUP BY
+	pj.id,
+	qp.queue_position,
+	qs.count
+ORDER BY
+	pj.created_at DESC
+LIMIT
+	sqlc.narg('limit')::int;
+
 -- name: GetProvisionerJobsCreatedAfter :many
 SELECT * FROM provisioner_jobs WHERE created_at > $1;