Files
Bookra/apps/backend/internal/db/class_schedules.go
T
Tomas DvorakandDevin ad60167a31 feat(classes): weekly recurring schedules with lazy session materialization
class_schedules rules generate concrete session rows for a rolling 28-day
horizon — no cron; materialize runs idempotently on dashboard and public
reads via a partial unique index on (schedule_id, starts_at). Rule delete
stops future sessions; existing sessions keep bookings and overrides.

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2026-09-18 17:31:17 +02:00

102 lines
3.2 KiB
Go

package db
import (
"context"
"fmt"
"time"
)
const classScheduleColumns = "id, tenant_id, template_id, location_id, day_of_week, starts_local::text, active, created_at"
func (r *PGRepository) ListClassSchedulesByTenant(ctx context.Context, tenantID string) ([]ClassScheduleRecord, error) {
rows, err := r.pool.Query(ctx, `
SELECT `+classScheduleColumns+`
FROM class_schedules
WHERE tenant_id = $1
ORDER BY day_of_week ASC, starts_local ASC
`, tenantID)
if err != nil {
return nil, err
}
defer rows.Close()
var records []ClassScheduleRecord
for rows.Next() {
var record ClassScheduleRecord
if err := rows.Scan(
&record.ID,
&record.TenantID,
&record.TemplateID,
&record.LocationID,
&record.DayOfWeek,
&record.StartsLocal,
&record.Active,
&record.CreatedAt,
); err != nil {
return nil, err
}
records = append(records, record)
}
return records, rows.Err()
}
func (r *PGRepository) CreateClassSchedule(ctx context.Context, params CreateClassScheduleParams) (ClassScheduleRecord, error) {
var record ClassScheduleRecord
err := r.pool.QueryRow(ctx, `
INSERT INTO class_schedules (tenant_id, template_id, location_id, day_of_week, starts_local)
VALUES ($1, $2, $3, $4, $5::time)
RETURNING `+classScheduleColumns+`
`, params.TenantID, params.TemplateID, params.LocationID, params.DayOfWeek, params.StartsLocal).Scan(
&record.ID,
&record.TenantID,
&record.TemplateID,
&record.LocationID,
&record.DayOfWeek,
&record.StartsLocal,
&record.Active,
&record.CreatedAt,
)
return record, err
}
func (r *PGRepository) DeleteClassSchedule(ctx context.Context, tenantID string, scheduleID string) error {
tag, err := r.pool.Exec(ctx, `DELETE FROM class_schedules WHERE id = $1 AND tenant_id = $2`, scheduleID, tenantID)
if err != nil {
return err
}
if tag.RowsAffected() == 0 {
return fmt.Errorf("class schedule not found")
}
return nil
}
// MaterializeScheduleSessions writes concrete session rows for each active
// rule over the next `days` days in the tenant's timezone. The partial unique
// index on (schedule_id, starts_at) makes this idempotent: sessions already
// materialized are skipped, and sessions the staff edited or cancelled stay
// untouched.
func (r *PGRepository) MaterializeScheduleSessions(ctx context.Context, tenantID string, now time.Time, days int) error {
_, err := r.pool.Exec(ctx, `
INSERT INTO class_sessions (tenant_id, template_id, location_id, starts_at, ends_at, capacity, schedule_id)
SELECT
s.tenant_id,
s.template_id,
s.location_id,
(d.day + s.starts_local) AT TIME ZONE t.timezone,
(d.day + s.starts_local) AT TIME ZONE t.timezone + make_interval(mins => tpl.duration_minutes),
tpl.capacity,
s.id
FROM class_schedules s
INNER JOIN tenants t ON t.id = s.tenant_id
INNER JOIN class_templates tpl ON tpl.id = s.template_id
CROSS JOIN generate_series(0, $3::int - 1) AS g(i)
CROSS JOIN LATERAL (SELECT ($2::timestamptz AT TIME ZONE t.timezone)::date + g.i AS day) d
WHERE s.tenant_id = $1
AND s.active
AND EXTRACT(ISODOW FROM d.day)::int = ((s.day_of_week + 6) % 7) + 1
AND (d.day + s.starts_local) AT TIME ZONE t.timezone > $2
ON CONFLICT (schedule_id, starts_at) WHERE schedule_id IS NOT NULL DO NOTHING
`, tenantID, now, days)
return err
}