feat: schedule task

db/queries/schedule.sql

@@ -0,0 +1,49 @@
+-- name: CreateSchedule :one
+INSERT INTO schedule (name, description, pattern, max_calls, enabled, command, user_id)
+VALUES ($1, $2, $3, $4, $5, $6, $7)
+RETURNING id, name, description, pattern, max_calls, current_calls, created_at, updated_at, enabled, command, user_id;
+
+-- name: GetScheduleByID :one
+SELECT id, name, description, pattern, max_calls, current_calls, created_at, updated_at, enabled, command, user_id
+FROM schedule
+WHERE id = $1;
+
+-- name: ListSchedulesByUser :many
+SELECT id, name, description, pattern, max_calls, current_calls, created_at, updated_at, enabled, command, user_id
+FROM schedule
+WHERE user_id = $1
+ORDER BY created_at DESC;
+
+-- name: ListEnabledSchedules :many
+SELECT id, name, description, pattern, max_calls, current_calls, created_at, updated_at, enabled, command, user_id
+FROM schedule
+WHERE enabled = true
+ORDER BY created_at DESC;
+
+-- name: UpdateSchedule :one
+UPDATE schedule
+SET name = $2,
+    description = $3,
+    pattern = $4,
+    max_calls = $5,
+    enabled = $6,
+    command = $7,
+    updated_at = now()
+WHERE id = $1
+RETURNING id, name, description, pattern, max_calls, current_calls, created_at, updated_at, enabled, command, user_id;
+
+-- name: DeleteSchedule :exec
+DELETE FROM schedule
+WHERE id = $1;
+
+-- name: IncrementScheduleCalls :one
+UPDATE schedule
+SET current_calls = current_calls + 1,
+    enabled = CASE
+      WHEN max_calls IS NOT NULL AND current_calls + 1 >= max_calls THEN false
+      ELSE enabled
+    END,
+    updated_at = now()
+WHERE id = $1
+RETURNING id, name, description, pattern, max_calls, current_calls, created_at, updated_at, enabled, command, user_id;
+