using audit_logs.Utils;

namespace audit_test.Repository;

using audit_logs.Repositories;
using audit.Model;
using audit_logs.Services;

public class AuditServiceIntegrationTests
{
    private AuditService _service;
   // private AuditRecordRepository _repository;

    [Order(1)]
    [SetUp]
    public void Setup()
    {
        IntegrationDb.Database.DropCollectionAsync("AuditRecords");
        //_repository = new AuditRecordRepository(IntegrationDb.Database);
        _service = new AuditService(IntegrationDb.Database);
    }

    [Test]
    public async Task RecordAuditAsync_CreatesAndRetrievesAuditRecord()
    {
        // Arrange
        var changes = new List<AuditRecord.Change>
        {
            new AuditRecord.Change
                { Field = "Username", OldValue = "oldUser", NewValue = "newUser", ValueType = "String" }
        };
        string entityType = "User",
            recordId = "1",
            userId = "123",
            actionType = "Create",
            reason = "Testing create functionality";
        DateTime actionTime = DateTime.UtcNow;

        // Act
        await _service.RecordAuditAsync(entityType, recordId, userId, actionType, reason,actionTime, changes );


        // Retrieve all records to validate insertion
        var allRecords = await _service.AuditLogRepository.GetAllAuditRecordsAsync();

        // Assert
        Assert.AreEqual(1, allRecords.Count, "There should be exactly three audit record in the database.");
        var storedRecord = allRecords[0];
        Assert.AreEqual(entityType, storedRecord.EntityType);
        Assert.AreEqual(recordId, storedRecord.RecordId);
        Assert.AreEqual(userId, storedRecord.UserId);
        Assert.AreEqual(actionType, storedRecord.ActionType);
        Assert.AreEqual(reason, storedRecord.Reason);
        //  Assert.That(storedRecord.Changes, Is.EquivalentTo(changes).Using(new ChangeComparer()), "Changes should match the input changes.");
    }

    [Test]
    public async Task GetAllAuditRecords_ReturnsAllRecords()
    {
        // Prepare multiple records
        var records = new List<AuditRecord>
        {
            new AuditRecord
            {
                EntityType = "User", RecordId = "1", UserId = "123", ActionType = "Create",
                ActionTime = DateTime.UtcNow, Reason = "Test Reason 1"
            },
            new AuditRecord
            {
                EntityType = "Admin", RecordId = "2", UserId = "456", ActionType = "Delete",
                ActionTime = DateTime.UtcNow, Reason = "Test Reason 2"
            }
        };

        foreach (var rec in records)
        {
            await  _service.AuditLogRepository.InsertOneAsync(rec);
        }

        // Test retrieval method
        var allRecords = await  _service.AuditLogRepository.GetAllAuditRecordsAsync();

        // Assert
        Assert.AreEqual(2, allRecords.Count, "All records should be retrieved.");
        Assert.IsTrue(allRecords.Exists(r => r.RecordId == "1" && r.EntityType == "User"));
        Assert.IsTrue(allRecords.Exists(r => r.RecordId == "2" && r.EntityType == "Admin"));
    }

    [Test]
    public async Task DetectChangesAsync_DetectsAndRecordsChanges()
    {
        // Arrange
        string originalJson = "{ \"Username\": \"oldUser\", \"Email\": \"old@example.com\", \"address\": 15 }";
        string modifiedJson =
            "{ \"Username\": \"newUser\", \"Email\": \"old@example.com\", \"PhoneNumber\": \"123456789\" }";

        // Variables de auditoría
        string entityType = "User";
        string recordId = "1";
        string userId = "123";
        string actionType = "Update";
        DateTime actionTime = DateTime.UtcNow;
        string reason = "Testing change detection";

        // Act - Llamar a DetectChangesAsync para que identifique cambios
        await _service.CreateAuditLogAsync(entityType, recordId, userId, actionType, reason,actionTime,originalJson, modifiedJson);

        // Act - Registrar la auditoría usando los cambios detectados
       // List<AuditRecord.Change> changes = new JsonComparer().GetDifferences(originalJson, modifiedJson);
        //await _service.RecordAuditAsync(entityType, recordId, userId, actionType, reason,actionTime, changes, );

        // Retrieve all records to validate insertion
        var allRecords = await  _service.AuditLogRepository.GetAllAuditRecordsAsync();

        // Assert
        Assert.AreEqual(1, allRecords.Count, "Debe haber exactamente un registro de auditoría en la base de datos.");
        var storedRecord = allRecords[0];
        Assert.AreEqual(entityType, storedRecord.EntityType);
        Assert.AreEqual(recordId, storedRecord.RecordId);
        Assert.AreEqual(userId, storedRecord.UserId);
        Assert.AreEqual(actionType, storedRecord.ActionType);
        Assert.AreEqual(reason, storedRecord.Reason);

        // Verificar que los cambios detectados sean correctos
        Assert.AreEqual(3, storedRecord.Changes.Count, "Debería detectar dos cambios.");

        var changeUsername = storedRecord.Changes.Find(c => c.Field == "Username");
        Assert.NotNull(changeUsername, "Debe existir un cambio en el campo 'Username'.");
        Assert.AreEqual("oldUser", changeUsername.OldValue.AsString);
        Assert.AreEqual("newUser", changeUsername.NewValue.AsString);
        Assert.AreEqual("string", changeUsername.ValueType);

        var changePhoneNumber = storedRecord.Changes.Find(c => c.Field == "PhoneNumber");
        Assert.NotNull(changePhoneNumber, "Debe existir un cambio en el campo 'PhoneNumber'.");
        Assert.IsTrue(changePhoneNumber.OldValue.IsBsonNull, "El valor anterior de 'PhoneNumber' debe ser nulo.");
        Assert.AreEqual("123456789", changePhoneNumber.NewValue.AsString);
        Assert.AreEqual("string", changePhoneNumber.ValueType);
    }
}