using System.Text.Json;
using Dapper;
using JdeScoping.Core.Models.Search;
using Microsoft.Data.SqlClient;

namespace JdeScoping.Database.Tests.Infrastructure;

/// <summary>
/// xUnit Collection definition to disable parallel execution for database tests.
/// All test classes using [Collection("DatabaseTests")] run sequentially.
/// </summary>
[CollectionDefinition("DatabaseTests")]
public class DatabaseTestCollection : ICollectionFixture<DatabaseTestFixture>
{
}

/// <summary>
/// Shared fixture for database tests. Ensures database is available.
/// </summary>
public class DatabaseTestFixture : IAsyncLifetime
{
    /// <summary>
    /// Connection string for the test database.
    /// Uses SA credentials from db_info.md for local development.
    /// </summary>
    public const string ConnectionString =
        "Server=localhost,1434;Database=ScopingTool;User Id=sa;Password=ScopingTool_SA_2024Dev;TrustServerCertificate=true";

    public async Task InitializeAsync()
    {
        // Verify database is accessible
        using var connection = new SqlConnection(ConnectionString);
        await connection.OpenAsync();
    }

    public Task DisposeAsync() => Task.CompletedTask;
}

/// <summary>
/// Base class for database function tests.
/// Each test gets its own connection and cleans up created data.
/// </summary>
[Collection("DatabaseTests")]
public abstract class DatabaseTestBase : IAsyncLifetime
{
    protected SqlConnection Connection { get; private set; } = null!;

    private readonly List<int> _createdSearchIds = [];

    public async Task InitializeAsync()
    {
        Connection = new SqlConnection(DatabaseTestFixture.ConnectionString);
        await Connection.OpenAsync();
    }

    public async Task DisposeAsync()
    {
        // Clean up test data
        foreach (var id in _createdSearchIds)
        {
            await Connection.ExecuteAsync("DELETE FROM dbo.Search WHERE ID = @Id", new { Id = id });
        }

        await Connection.DisposeAsync();
    }

    /// <summary>
    /// Insert a test search with the given criteria and return the ID.
    /// </summary>
    protected async Task<int> InsertTestSearchAsync(SearchCriteria criteria, string userName = "testuser", string name = "Test Search")
    {
        var criteriaJson = JsonSerializer.Serialize(criteria);

        var id = await Connection.QuerySingleAsync<int>(
            @"INSERT INTO dbo.Search (UserName, Name, Status, Criteria)
              OUTPUT INSERTED.ID
              VALUES (@UserName, @Name, 0, @Criteria)",
            new { UserName = userName, Name = name, Criteria = criteriaJson });

        _createdSearchIds.Add(id);
        return id;
    }

    /// <summary>
    /// Insert a test search with raw criteria JSON (for testing invalid JSON scenarios).
    /// </summary>
    protected async Task<int> InsertTestSearchWithRawCriteriaAsync(string? criteriaJson, string userName = "testuser", string name = "Test Search")
    {
        var id = await Connection.QuerySingleAsync<int>(
            @"INSERT INTO dbo.Search (UserName, Name, Status, Criteria)
              OUTPUT INSERTED.ID
              VALUES (@UserName, @Name, 0, @Criteria)",
            new { UserName = userName, Name = name, Criteria = criteriaJson });

        _createdSearchIds.Add(id);
        return id;
    }
}