package calendartest

import (
	calendar "amadan.net/oficina/calendar/internal/calendar"
	"context"
	"errors"
	"net/url"
	"testing"
	"time"
)

func TestGapSeriesRefusesFreeSlotsWithoutBreakingOrdinaryDates(t *testing.T) {
	app, session := signedIn(t, "gap@example.test")
	createEvent(t, app.Handler(), session, url.Values{"title": {"Gap fixture"}, "start": {"2026-03-01T01:30"}, "end": {"2026-03-01T02:00"}, "tz": {"Europe/Dublin"}, "kind": {"meeting"}, "status": {"confirmed"}, "repeat": {"daily"}})
	host := app.PersonByAddressForTest(t, "gap@example.test")
	st := app.StoreForTest()
	ctx := context.Background()
	ws, problems := calendar.ParseAvailability("every day 0-4")
	if len(problems) != 0 {
		t.Fatal(problems)
	}
	stored, err := st.CreateBookingPage(ctx, host.ID, calendar.BookingPageInput{Title: "Gap check", Availability: "every day 0-4", DurationMin: 30, HorizonDays: 30}, ws)
	if err != nil {
		t.Fatal(err)
	}
	page, err := st.BookingPage(ctx, host.ID, stored.ID)
	if err != nil {
		t.Fatal(err)
	}
	for _, c := range []struct {
		day        int
		month      time.Month
		incomplete bool
	}{{29, time.March, true}, {27, time.March, false}, {1, time.April, false}} {
		from := time.Date(2026, c.month, c.day, 0, 0, 0, 0, time.UTC)
		to := from.Add(24 * time.Hour)
		slots, err := st.FreeSlots(ctx, page, host, from, from, to, 0, 0)
		if c.incomplete {
			if !errors.Is(err, calendar.ErrIncompleteExpansion) || len(slots) != 0 {
				t.Fatalf("gap FreeSlots=%v err=%v", slots, err)
			}
		} else if err != nil || len(slots) == 0 {
			t.Fatalf("ordinary date %v incomplete", from)
		}
		views, err := st.EventsInRange(ctx, host.ID, from.Unix(), to.Unix())
		if err != nil {
			t.Fatal(err)
		}
		if c.incomplete && len(views) != 0 {
			t.Fatalf("invalid chip: %+v", views)
		}
		if !c.incomplete && len(views) != 1 {
			t.Fatalf("ordinary date %v: %d views", from, len(views))
		}
	}
}