using GerbilManagerWebAPI.Import;
using GerbilManagerWebAPI.Models;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using System.Text.Json;

namespace GerbilManager.Tests
{
    public class IngestResolvedServiceTests : IDisposable
    {
        private readonly string _dir;
        private readonly string _resolvedJsonPath;

        public IngestResolvedServiceTests()
        {
            _dir = Path.Combine(Path.GetTempPath(), "ingest-resolved-" + Guid.NewGuid().ToString("N"));
            Directory.CreateDirectory(_dir);
            _resolvedJsonPath = Path.Combine(_dir, "resolved_import.json");

            var contactId = Guid.NewGuid();
            var fatherId = Guid.NewGuid();
            var motherId = Guid.NewGuid();
            var litterId = Guid.NewGuid();
            var photoId = Guid.NewGuid();

            var data = new
            {
                Contacts = new[]
                {
                    new
                    {
                        Id = contactId,
                        Name = "Test Breeder",
                        ZuchtName = "Test Zucht",
                        City = "Test City",
                        Email = "test@example.com",
                        Homepage = "",
                        Phone = "",
                        Address = "",
                        Provenance = (string?)"{\"sourceFiles\":[\"Stammbaum\"],\"mergedRecordCount\":1,\"notes\":[\"als Züchter erkannt\"]}"
                    }
                },
                Litters = new[]
                {
                    new
                    {
                        Id = litterId,
                        Name = "Wurf A",
                        Date = "2026-01-01",
                        TotalBorn = 5,
                        DeathsWithin8Weeks = 0,
                        FatherId = fatherId,
                        MotherId = motherId,
                        ExpectedGoHomeDate = (string?)null,
                        Notes = "Test litter notes",
                        PairingCode = "PC01",
                        ExternalRef = "ext-litter-1",
                        LitterLetter = "A",
                        Provenance = (string?)"{\"sourceFiles\":[\"Wurfchronik-Detail.docx\"],\"mergedRecordCount\":1,\"fromWurfchronik\":true,\"notes\":[\"aus Wurfchronik\"]}"
                    }
                },
                Gerbils = new[]
                {
                    new
                    {
                        Id = fatherId,
                        Name = "Papa",
                        Gender = "male",
                        Status = "Breeding",
                        LitterId = (Guid?)null,
                        OriginContactId = contactId,
                        ReceiverContactId = (Guid?)null,
                        EnclosureId = (Guid?)null,
                        ColorVarietyId = new Guid("00000000-0000-0000-0000-000000000006"), // Schwarz
                        DateOfBirth = "2025-01-01",
                        DateOfDeath = (string?)null,
                        CauseOfDeath = (string?)null,
                        GoHomeDate = (string?)null,
                        Genotype = "aa CC DD EE GG PP spsp rere",
                        Notes = "",
                        ImportSource = "docx-export",
                        ExternalRef = "ext-papa",
                        RawImportData = "{}",
                        OriginBreeder = "Test Zucht",
                        NameSearch = "papa",
                        CharacterTraits = new string[] {},
                        CharacterNote = (string?)null,
                        IsDeaf = false,
                        IsResident = true,
                        Provenance = (string?)"{\"sourceFiles\":[\"Stammbaum von Papa.xlsx\",\"Wurfchronik-Detail.docx\"],\"mergedRecordCount\":2,\"fromWurfchronik\":true,\"notes\":[\"aus 2 Datensätzen zusammengeführt\"]}"
                    },
                    new
                    {
                        Id = motherId,
                        Name = "Mama",
                        Gender = "female",
                        Status = "Breeding",
                        LitterId = (Guid?)null,
                        OriginContactId = contactId,
                        ReceiverContactId = (Guid?)null,
                        EnclosureId = (Guid?)null,
                        ColorVarietyId = new Guid("00000000-0000-0000-0000-000000000006"), // Schwarz
                        DateOfBirth = "2025-01-01",
                        DateOfDeath = (string?)null,
                        CauseOfDeath = (string?)null,
                        GoHomeDate = (string?)null,
                        Genotype = "aa CC DD EE GG PP spsp rere",
                        Notes = "",
                        ImportSource = "docx-export",
                        ExternalRef = "ext-mama",
                        RawImportData = "{}",
                        OriginBreeder = "Test Zucht",
                        NameSearch = "mama",
                        CharacterTraits = new string[] {},
                        CharacterNote = (string?)null,
                        IsDeaf = false,
                        IsResident = true,
                        Provenance = (string?)null
                    }
                },
                GerbilPhotos = new[]
                {
                    new
                    {
                        Id = photoId,
                        GerbilId = fatherId,
                        FileName = "photo1.jpg",
                        SortOrder = 0
                    }
                }
            };

            File.WriteAllText(_resolvedJsonPath, JsonSerializer.Serialize(data));
        }

        public void Dispose()
        {
            try { Directory.Delete(_dir, recursive: true); } catch { }
        }

        private ApplicationContext NewDb()
        {
            var opts = new DbContextOptionsBuilder<ApplicationContext>()
                .UseInMemoryDatabase("ingest-resolved-" + Guid.NewGuid().ToString("N"))
                .Options;
            var db = new ApplicationContext(opts);
            db.Database.EnsureCreated();
            return db;
        }

        [Fact]
        public async Task IngestResolved_loads_data_and_resolves_all_relations()
        {
            using var db = NewDb();
            var config = new ConfigurationBuilder()
                .AddInMemoryCollection(new Dictionary<string, string?>
                {
                    { "Import:SourcePath", _dir }
                })
                .Build();

            var service = new IngestResolvedService(db, config, null!);
            var result = await service.RunAsync();

            Assert.Contains("Ingestion successful!", result);

            // Verify counts
            Assert.Equal(1, await db.Contacts.CountAsync());
            Assert.Equal(1, await db.Litters.CountAsync());
            Assert.Equal(2, await db.Gerbils.CountAsync());
            Assert.Equal(1, await db.GerbilPhotos.CountAsync());

            // Verify relations
            var litter = await db.Litters.SingleAsync();
            var father = await db.Gerbils.SingleAsync(g => g.Name == "Papa");
            var mother = await db.Gerbils.SingleAsync(g => g.Name == "Mama");
            var photo = await db.GerbilPhotos.SingleAsync();

            Assert.Equal(father.Id, litter.FatherId);
            Assert.Equal(mother.Id, litter.MotherId);
            Assert.Equal(father.Id, photo.GerbilId);
            Assert.Equal(father.OriginContactId, mother.OriginContactId);

            // Provenance round-trips verbatim through ingest (and stays null when absent).
            Assert.NotNull(father.Provenance);
            Assert.Contains("Stammbaum von Papa.xlsx", father.Provenance);
            Assert.Contains("mergedRecordCount", father.Provenance);
            Assert.Null(mother.Provenance);

            // Contact + litter provenance also round-trips through the ingest.
            var contact = await db.Contacts.SingleAsync();
            Assert.NotNull(contact.Provenance);
            Assert.Contains("als Züchter erkannt", contact.Provenance);

            Assert.NotNull(litter.Provenance);
            Assert.Contains("aus Wurfchronik", litter.Provenance);
            Assert.Contains("fromWurfchronik", litter.Provenance);
        }
    }
}