using Centron.BusinessLogic.Tapi;
using Centron.Interfaces;
using Microsoft.Graph.Models.CallRecords;

namespace Centron.Tests.BL.Tapi;

public class PhoneCallBLTest
{
    private const int CentronSystemEmployeeI3D = 999;

    [Fact]
    public void CreateSyncedPhoneCallsKeepsOneRowPerParticipant()
    {
        var organizer = CreateEmployeeCaller(1, "Organizer");
        var employeeParticipant = CreateEmployeeCaller(2, "Participant");
        var externalParticipant1 = CreateExternalCaller("external1@example.com");
        var externalParticipant2 = CreateExternalCaller("external2@example.com");

        var result = PhoneCallBL.CreateSyncedPhoneCalls(
            CreateCall(CallType.GroupCall),
            organizer,
            [organizer, employeeParticipant, externalParticipant1, externalParticipant2, externalParticipant2],
            [1, 2],
            CentronSystemEmployeeI3D);

        Assert.Equal(3, result.Count);
        Assert.All(result, phoneCall =>
        {
            Assert.Equal(organizer.ObjektI3D, phoneCall.CreatedBy);
            Assert.Equal(organizer.Name, phoneCall.CreatorName);
            Assert.True(phoneCall.IsGroupCall);
        });
        Assert.Equal(
            [employeeParticipant.Number, externalParticipant1.Number, externalParticipant2.Number],
            result.Select(x => x.CallerNumber).OrderBy(x => x));
    }

    [Fact]
    public void CreateSyncedPhoneCallsKeepsPeerToPeerCallAsSingleRow()
    {
        var organizer = CreateEmployeeCaller(1, "Organizer");
        var participant = CreateEmployeeCaller(2, "Participant");

        var phoneCall = Assert.Single(PhoneCallBL.CreateSyncedPhoneCalls(
            CreateCall(CallType.PeerToPeer),
            organizer,
            [organizer, participant],
            [1, 2],
            CentronSystemEmployeeI3D));

        Assert.Equal(1, phoneCall.CreatedBy);
        Assert.Equal(2, phoneCall.OwnerI3D);
        Assert.Equal(participant.Number, phoneCall.CallerNumber);
        Assert.True(phoneCall.WasOutgoing);
        Assert.True(phoneCall.WasInternalCall);
        Assert.False(phoneCall.IsGroupCall);
    }

    [Fact]
    public void CreateSyncedPhoneCallsKeepsRowWhenOnlyParticipantIsSynchronized()
    {
        var organizer = CreateEmployeeCaller(1, "Organizer");
        var participant = CreateEmployeeCaller(2, "Participant");

        var phoneCall = Assert.Single(PhoneCallBL.CreateSyncedPhoneCalls(
            CreateCall(CallType.PeerToPeer),
            organizer,
            [participant],
            [2],
            CentronSystemEmployeeI3D));

        Assert.Equal(1, phoneCall.CreatedBy);
        Assert.Equal(2, phoneCall.OwnerI3D);
    }

    [Fact]
    public void CreateSyncedPhoneCallsIgnoresCallsWithoutSynchronizedEmployee()
    {
        var organizer = CreateEmployeeCaller(1, "Organizer");
        var participant = CreateEmployeeCaller(2, "Participant");

        var result = PhoneCallBL.CreateSyncedPhoneCalls(
            CreateCall(CallType.PeerToPeer),
            organizer,
            [participant],
            [3],
            CentronSystemEmployeeI3D);

        Assert.Empty(result);
    }

    [Fact]
    public void CreateSyncedPhoneCallsKeepsExternalParticipantsOfRelevantGroupCall()
    {
        var organizer = CreateExternalCaller("external-organizer@example.com");
        var participant1 = CreateEmployeeCaller(1, "Participant 1");
        var participant2 = CreateEmployeeCaller(2, "Participant 2");
        var externalParticipant = CreateExternalCaller("external-participant@example.com");

        var result = PhoneCallBL.CreateSyncedPhoneCalls(
            CreateCall(CallType.GroupCall),
            organizer,
            [participant1, participant2, externalParticipant],
            [1, 2],
            CentronSystemEmployeeI3D);

        Assert.Equal(3, result.Count);
        Assert.Equal([1, 2, CentronSystemEmployeeI3D], result.Select(x => x.CreatedBy).OrderBy(x => x));
        Assert.All(result, phoneCall => Assert.Equal(organizer.Number, phoneCall.CallerNumber));
    }

    [Fact]
    public void PairComparisonAllowsParticipantAddedAfterInitialImport()
    {
        var organizer = CreateEmployeeCaller(1, "Organizer");
        var initialParticipant = CreateEmployeeCaller(2, "Initial Participant");
        var laterParticipant = CreateEmployeeCaller(3, "Later Participant");
        var call = CreateCall(CallType.GroupCall);
        var existingPhoneCall = Assert.Single(PhoneCallBL.CreateSyncedPhoneCalls(
            call,
            organizer,
            [initialParticipant],
            [1, 2, 3],
            CentronSystemEmployeeI3D));
        var refreshedPhoneCalls = PhoneCallBL.CreateSyncedPhoneCalls(
            call,
            organizer,
            [initialParticipant, laterParticipant],
            [1, 2, 3],
            CentronSystemEmployeeI3D);

        Assert.True(PhoneCallBL.IsSameSyncedPhoneCall(existingPhoneCall, refreshedPhoneCalls.Single(x => x.OwnerI3D == 2)));
        Assert.False(PhoneCallBL.IsSameSyncedPhoneCall(existingPhoneCall, refreshedPhoneCalls.Single(x => x.OwnerI3D == 3)));
    }

    [Fact]
    public void UpdateSyncedPhoneCallRefreshesCallAfterParticipantWasAdded()
    {
        var organizer = CreateEmployeeCaller(1, "Organizer");
        var initialParticipant = CreateEmployeeCaller(2, "Initial Participant");
        var laterParticipant = CreateEmployeeCaller(3, "Later Participant");
        var initialCall = CreateCall(CallType.PeerToPeer);
        initialCall.EndDateTime = initialCall.StartDateTime.GetValueOrDefault().AddMinutes(4);
        var existingPhoneCall = Assert.Single(PhoneCallBL.CreateSyncedPhoneCalls(
            initialCall,
            organizer,
            [initialParticipant],
            [1, 2, 3],
            CentronSystemEmployeeI3D));
        var refreshedCall = CreateCall(CallType.GroupCall);
        refreshedCall.Id = initialCall.Id;
        refreshedCall.EndDateTime = refreshedCall.StartDateTime.GetValueOrDefault().AddMinutes(15);
        var refreshedPhoneCall = PhoneCallBL.CreateSyncedPhoneCalls(
                refreshedCall,
                organizer,
                [initialParticipant, laterParticipant],
                [1, 2, 3],
                CentronSystemEmployeeI3D)
            .Single(x => x.OwnerI3D == initialParticipant.ObjektI3D);

        var wasUpdated = PhoneCallBL.UpdateSyncedPhoneCall(existingPhoneCall, refreshedPhoneCall);

        Assert.True(wasUpdated);
        Assert.Equal(refreshedCall.EndDateTime.Value.LocalDateTime, existingPhoneCall.EndTime);
        Assert.Equal(15 * 60, existingPhoneCall.DurationInSeconds);
        Assert.True(existingPhoneCall.IsGroupCall);
        Assert.False(PhoneCallBL.UpdateSyncedPhoneCall(existingPhoneCall, refreshedPhoneCall));
    }

    private static CallRecord CreateCall(CallType callType)
        => new()
        {
            Id = Guid.NewGuid().ToString(),
            Type = callType,
            StartDateTime = new DateTimeOffset(2026, 7, 13, 10, 0, 0, TimeSpan.Zero),
            EndDateTime = new DateTimeOffset(2026, 7, 13, 11, 0, 0, TimeSpan.Zero)
        };

    private static Caller CreateEmployeeCaller(int employeeI3D, string name)
        => new()
        {
            ObjektI3D = employeeI3D,
            ObjektArt = CentronObjectKindNumeric.EmployeeClass,
            Name = name,
            Number = $"employee{employeeI3D}@example.com"
        };

    private static Caller CreateExternalCaller(string number)
        => new()
        {
            ObjektArt = CentronObjectKindNumeric.Unknown,
            Name = number,
            Number = number
        };
}