package services

import (
	"testing"

	"github.com/breakpilot/school-service/internal/models"
)

func TestUpsertSchoolCalendarConfigRequest_Validation(t *testing.T) {
	tests := []struct {
		name    string
		req     models.UpsertSchoolCalendarConfigRequest
		wantErr bool
	}{
		{"valid NI", models.UpsertSchoolCalendarConfigRequest{Bundesland: "DE-NI"}, false},
		{"empty bundesland", models.UpsertSchoolCalendarConfigRequest{Bundesland: ""}, true},
		{"too long", models.UpsertSchoolCalendarConfigRequest{Bundesland: "DE-NIE"}, true},
		{"too short", models.UpsertSchoolCalendarConfigRequest{Bundesland: "DE"}, true},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if (validate.Struct(tt.req) != nil) != tt.wantErr {
				t.Errorf("unexpected validation outcome for %s", tt.name)
			}
		})
	}
}

func TestCreateSchoolEventRequest_Validation(t *testing.T) {
	tests := []struct {
		name    string
		req     models.CreateSchoolEventRequest
		wantErr bool
	}{
		{"valid fortbildung", models.CreateSchoolEventRequest{
			Title: "SCHILF", EventType: "fortbildung",
			StartDate: "2026-10-01", EndDate: "2026-10-01",
		}, false},
		{"missing title", models.CreateSchoolEventRequest{
			EventType: "fortbildung", StartDate: "2026-10-01", EndDate: "2026-10-01",
		}, true},
		{"invalid event type", models.CreateSchoolEventRequest{
			Title: "X", EventType: "wedding",
			StartDate: "2026-10-01", EndDate: "2026-10-01",
		}, true},
		{"missing dates", models.CreateSchoolEventRequest{
			Title: "X", EventType: "schulfeier",
		}, true},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if (validate.Struct(tt.req) != nil) != tt.wantErr {
				t.Errorf("unexpected validation outcome for %s", tt.name)
			}
		})
	}
}

func TestNewCalendarService_Constructs(t *testing.T) {
	s := NewCalendarService(nil)
	if s == nil {
		t.Fatal("expected non-nil service")
	}
}