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path: root/internal/store/buckets_test.go
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package store

import (
	"testing"
	"time"
)

func createDormantTask(t *testing.T, s *Store, id, bucketID string, priority int, lastActive *time.Time) {
	t.Helper()
	if _, err := s.db.Exec(`
		INSERT INTO native_tasks (id, content, priority, bucket_id, bucket_state, bucket_last_active_at)
		VALUES (?, ?, ?, ?, 'dormant', ?)
	`, id, id, priority, bucketID, lastActive); err != nil {
		t.Fatal(err)
	}
}

func TestSelectBucketCycle_PicksTopNByStalenessThenPriority(t *testing.T) {
	s := newNativeTasksTestStore(t)
	bucket, err := s.CreateBucket("Gutters", 30, 2)
	if err != nil {
		t.Fatal(err)
	}

	old := time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC)
	recent := time.Date(2026, 6, 1, 0, 0, 0, 0, time.UTC)
	createDormantTask(t, s, "never-activated", bucket.ID, 1, nil)
	createDormantTask(t, s, "stale", bucket.ID, 1, &old)
	createDormantTask(t, s, "recent", bucket.ID, 1, &recent)

	now := time.Date(2026, 7, 1, 0, 0, 0, 0, time.UTC)
	n, err := s.selectBucketCycle(bucket.ID, now)
	if err != nil {
		t.Fatalf("selectBucketCycle: %v", err)
	}
	if n != 2 {
		t.Fatalf("activated = %d, want 2", n)
	}

	neverTask, err := s.GetNativeTaskByID("never-activated")
	if err != nil {
		t.Fatal(err)
	}
	if neverTask.BucketState != "active" {
		t.Errorf("never-activated should be picked first (never activated outranks any timestamp), got state=%q", neverTask.BucketState)
	}
	staleTask, err := s.GetNativeTaskByID("stale")
	if err != nil {
		t.Fatal(err)
	}
	if staleTask.BucketState != "active" {
		t.Errorf("stale should be picked second, got state=%q", staleTask.BucketState)
	}
	recentTask, err := s.GetNativeTaskByID("recent")
	if err != nil {
		t.Fatal(err)
	}
	if recentTask.BucketState != "dormant" {
		t.Errorf("recent should NOT be picked (only pick_n=2 slots), got state=%q", recentTask.BucketState)
	}
	if neverTask.DueDate == nil || !neverTask.DueDate.Equal(now.AddDate(0, 0, 30)) {
		t.Errorf("DueDate = %v, want now + cycle_days", neverTask.DueDate)
	}
}

func TestRunBucketCycles_RespectsCycleDays(t *testing.T) {
	s := newNativeTasksTestStore(t)
	bucket, err := s.CreateBucket("Gutters", 30, 1)
	if err != nil {
		t.Fatal(err)
	}
	createDormantTask(t, s, "item-1", bucket.ID, 1, nil)

	firstRun := time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC)
	n, err := s.RunBucketCycles(firstRun)
	if err != nil {
		t.Fatalf("RunBucketCycles: %v", err)
	}
	if n != 1 {
		t.Fatalf("first run activated = %d, want 1", n)
	}

	// Complete it so it's dormant again, then check a too-soon second run doesn't reactivate it.
	if err := s.CompleteNativeTask("item-1"); err != nil {
		t.Fatal(err)
	}
	tooSoon := firstRun.AddDate(0, 0, 10)
	n, err = s.RunBucketCycles(tooSoon)
	if err != nil {
		t.Fatalf("RunBucketCycles (too soon): %v", err)
	}
	if n != 0 {
		t.Fatalf("too-soon run activated = %d, want 0 (cycle not due yet)", n)
	}

	dueRun := firstRun.AddDate(0, 0, 31)
	n, err = s.RunBucketCycles(dueRun)
	if err != nil {
		t.Fatalf("RunBucketCycles (due): %v", err)
	}
	if n != 1 {
		t.Fatalf("due run activated = %d, want 1", n)
	}
}

func TestCompleteNativeTask_BucketItem_ReturnsToDormantWithNowTimestamp(t *testing.T) {
	s := newNativeTasksTestStore(t)
	bucket, err := s.CreateBucket("Gutters", 30, 1)
	if err != nil {
		t.Fatal(err)
	}
	createDormantTask(t, s, "item-1", bucket.ID, 1, nil)
	if _, err := s.selectBucketCycle(bucket.ID, time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC)); err != nil {
		t.Fatal(err)
	}

	if err := s.CompleteNativeTask("item-1"); err != nil {
		t.Fatalf("CompleteNativeTask: %v", err)
	}

	task, err := s.GetNativeTaskByID("item-1")
	if err != nil {
		t.Fatal(err)
	}
	if task.BucketState != "dormant" {
		t.Errorf("BucketState = %q, want dormant", task.BucketState)
	}
	if task.DueDate != nil {
		t.Errorf("DueDate = %v, want nil after completing", task.DueDate)
	}
	if task.BucketLastActiveAt == nil {
		t.Fatal("expected BucketLastActiveAt to be set to now on completion")
	}
	if task.BucketLastActiveAt.Before(time.Now().Add(-time.Minute)) {
		t.Errorf("BucketLastActiveAt = %v, expected close to now (completion, not defer)", *task.BucketLastActiveAt)
	}
}

func TestDeferNativeTask_ReturnsToDormantWithPriorTimestampAndBackfills(t *testing.T) {
	s := newNativeTasksTestStore(t)
	bucket, err := s.CreateBucket("Gutters", 30, 1)
	if err != nil {
		t.Fatal(err)
	}
	old := time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC)
	createDormantTask(t, s, "item-1", bucket.ID, 1, &old)
	createDormantTask(t, s, "item-2", bucket.ID, 1, nil)
	if _, err := s.selectBucketCycle(bucket.ID, time.Date(2026, 2, 1, 0, 0, 0, 0, time.UTC)); err != nil {
		t.Fatal(err)
	}
	// pick_n=1: item-2 (never activated) should have been picked, item-1 still dormant.
	activeBefore, err := s.GetNativeTaskByID("item-2")
	if err != nil {
		t.Fatal(err)
	}
	if activeBefore.BucketState != "active" {
		t.Fatalf("setup: expected item-2 active, got %q", activeBefore.BucketState)
	}

	if err := s.DeferNativeTask("item-2"); err != nil {
		t.Fatalf("DeferNativeTask: %v", err)
	}

	deferred, err := s.GetNativeTaskByID("item-2")
	if err != nil {
		t.Fatal(err)
	}
	if deferred.BucketState != "dormant" {
		t.Errorf("BucketState = %q, want dormant", deferred.BucketState)
	}
	activationTime := time.Date(2026, 2, 1, 0, 0, 0, 0, time.UTC)
	if deferred.BucketLastActiveAt == nil || !deferred.BucketLastActiveAt.Equal(activationTime) {
		t.Errorf("BucketLastActiveAt = %v, want unchanged from activation time %v (defer must not touch it)", deferred.BucketLastActiveAt, activationTime)
	}

	// Backfill: item-1 (the only other dormant item) should now be active.
	backfilled, err := s.GetNativeTaskByID("item-1")
	if err != nil {
		t.Fatal(err)
	}
	if backfilled.BucketState != "active" {
		t.Errorf("expected defer to backfill item-1 into the freed slot, got state=%q", backfilled.BucketState)
	}
}

func TestDeferNativeTask_NotAnActiveBucketItem_ReturnsErrNotFound(t *testing.T) {
	s := newNativeTasksTestStore(t)

	if err := s.DeferNativeTask("real-1"); err != ErrNativeTaskNotFound {
		t.Errorf("err = %v, want ErrNativeTaskNotFound", err)
	}
}

func TestGetUndatedNativeTasks_ExcludesDormantBucketItems(t *testing.T) {
	s := newNativeTasksTestStore(t)
	bucket, err := s.CreateBucket("Gutters", 30, 1)
	if err != nil {
		t.Fatal(err)
	}
	createDormantTask(t, s, "item-1", bucket.ID, 1, nil)

	undated, err := s.GetUndatedNativeTasks()
	if err != nil {
		t.Fatalf("GetUndatedNativeTasks: %v", err)
	}
	for _, task := range undated {
		if task.ID == "item-1" {
			t.Error("dormant bucket item leaked into GetUndatedNativeTasks")
		}
	}
}