package calendartest

import (
	"net/http"
	"net/url"
	"testing"
	"time"

	calendar "amadan.net/oficina/calendar/internal/calendar"
)

func TestSuccessfulClaimRaceWithoutProgressBacksOff(t *testing.T) {
	control := controlForTest(t)
	app := calendar.NewForTest(t, t.TempDir())
	due := time.Now().Add(-time.Minute).Unix()
	if _, err := app.DBForTest().Exec(`INSERT INTO reminder_queues (reminder_id,occurrence_key,due_at,attempts,late_by_sec) VALUES (1,'unclaimable',?,0,0)`, due); err != nil {
		t.Fatal(err)
	}
	if _, err := app.DBForTest().Exec(`CREATE TRIGGER decline_claim BEFORE UPDATE OF claimed_at ON reminder_queues BEGIN SELECT RAISE(IGNORE); END`); err != nil {
		t.Fatal(err)
	}
	before := time.Now()
	if rec := tick(t, app.Handler()); rec.Code != http.StatusNoContent {
		t.Fatalf("claim race tick = %d", rec.Code)
	}
	if at, _ := control.snapshot(); at.Before(before.Add(time.Minute - time.Second)) {
		t.Fatalf("no-progress successful drain rearmed immediately: %v", at)
	}
}

func TestRepeatedOccurrenceGuardFailsEvenAfterASuccessfulSend(t *testing.T) {
	control := controlForTest(t)
	app, session := signedIn(t, "someone@example.com")
	now := time.Now().UTC()
	for _, offset := range []time.Duration{time.Hour, 2 * time.Hour} {
		start := now.Add(offset)
		createEvent(t, app.Handler(), session, url.Values{"title": {"Guarded reminder"}, "start": {start.Format("2006-01-02T15:04")}, "end": {start.Add(15 * time.Minute).Format("2006-01-02T15:04")}, "kind": {"meeting"}, "status": {"confirmed"}, "repeat": {"none"}})
	}
	if _, err := app.DBForTest().Exec(`UPDATE reminder_queues SET occurrence_key='same', due_at=?`, now.Add(-time.Minute).Unix()); err != nil {
		t.Fatal(err)
	}
	before := time.Now()
	if rec := tick(t, app.Handler()); rec.Code != http.StatusInternalServerError {
		t.Fatalf("repeated occurrence was acknowledged despite a prior send: %d", rec.Code)
	}
	if at, _ := control.snapshot(); at.Before(before.Add(time.Minute - time.Second)) {
		t.Fatalf("stalled occurrence did not back off: %v", at)
	}
}