package analytics

import (
	"context"
	"errors"
	"testing"
	"time"

	"github.com/carlosframework/platform/internal/applog"
	"github.com/carlosframework/platform/internal/release"
)

// TestAnalyticsKeysRefuseEmptyApp: the day-file builders refuse an empty
// app, account, box or date, and UpsertDay refuses before touching the
// store, so nothing lands under apps/<sqid>//analytics/.
func TestAnalyticsKeysRefuseEmptyApp(t *testing.T) {
	for _, c := range []struct{ acct, app, box, date string }{
		{"bab", "", "box-a", "2026-10-16"},
		{"", "web", "box-a", "2026-10-16"},
		{"bab", "web", "", "2026-10-16"},
		{"bab", "web", "box-a", ""},
		{"bab", "web", "box-a", "2026/10/16"},
	} {
		if k, err := DayKey(c.acct, c.app, c.box, c.date); !errors.Is(err, applog.ErrBadKeySegment) || k != "" {
			t.Errorf("DayKey%+v = (%q, %v)", c, k, err)
		}
	}
	if k, err := Prefix("bab", ""); !errors.Is(err, applog.ErrBadKeySegment) || k != "" {
		t.Fatalf("Prefix = (%q, %v)", k, err)
	}
	if k, err := BoxPrefix("bab", "", "box-a"); !errors.Is(err, applog.ErrBadKeySegment) || k != "" {
		t.Fatalf("BoxPrefix = (%q, %v)", k, err)
	}
	ctx := context.Background()
	s := release.NewDirStore(t.TempDir())
	err := UpsertDay(ctx, s, "bab", "", Delta{Box: "box-a", Date: "2026-10-16", Seq: 1})
	if !errors.Is(err, applog.ErrBadKeySegment) {
		t.Fatalf("UpsertDay = %v", err)
	}
	if keys, _ := s.List(ctx, "apps/"); len(keys) != 0 {
		t.Fatalf("UpsertDay wrote %v", keys)
	}
	if _, err := ReadRange(ctx, s, "bab", "", time.Now(), time.Now()); !errors.Is(err, applog.ErrBadKeySegment) {
		t.Fatalf("ReadRange = %v", err)
	}
	if got := must(t)(BoxPrefix("bab", "web", "box-a")); got != "apps/bab/web/analytics/box-a/days/" {
		t.Fatalf("valid BoxPrefix moved: %q", got)
	}
}