using Dapper;
using KArtSell.Host.Observability;
using Npgsql;
using Xunit;

namespace KArtSell.Integration.Tests;

[Collection("Database")]
public class OpenDartServiceTests : IAsyncLifetime
{
    private readonly NpgsqlDataSource _dataSource;
    private readonly OpenDartService _service;

    public OpenDartServiceTests(DatabaseFixture fixture)
    {
        _dataSource = fixture.DataSource;
        _service = new OpenDartService(_dataSource, new HttpClient(), fixture.Logger<OpenDartService>());
    }

    public async Task InitializeAsync()
    {
        // Create opendata schema if needed
        await using var conn = await _dataSource.OpenConnectionAsync();
        await conn.ExecuteAsync("""
            CREATE SCHEMA IF NOT EXISTS opendata;
            CREATE TABLE IF NOT EXISTS opendata.opendart_cache (
                id BIGSERIAL PRIMARY KEY,
                ticker VARCHAR(10) NOT NULL,
                quarter VARCHAR(6) NOT NULL,
                data_json JSONB NOT NULL,
                expires_at TIMESTAMP WITH TIME ZONE NOT NULL,
                published_at TIMESTAMP WITH TIME ZONE NOT NULL,
                UNIQUE(ticker, quarter)
            );
            TRUNCATE opendata.opendart_cache;
            """);
    }

    public Task DisposeAsync() => Task.CompletedTask;

    [Fact]
    public async Task GetQuarterlyFinancialData_CachesResult_OnSuccess()
    {
        // Arrange
        var ticker = "005930";  // Samsung
        var quarter = "2024-Q1";

        // Act - First call should cache
        var result1 = await _service.GetQuarterlyFinancialDataAsync(ticker, quarter);

        // Assert - Verify cache entry exists
        await using var conn = await _dataSource.OpenConnectionAsync();
        var cached = await conn.QueryFirstOrDefaultAsync<string>(
            "SELECT data_json FROM opendata.opendart_cache WHERE ticker = @ticker AND quarter = @quarter",
            new { ticker, quarter });

        Assert.NotNull(cached);
    }

    [Fact]
    public async Task GetQuarterlyFinancialData_ReturnsFromCache_OnSecondCall()
    {
        // Arrange
        var ticker = "005930";
        var quarter = "2024-Q1";

        // Manually insert cache entry
        await using var conn = await _dataSource.OpenConnectionAsync();
        await conn.ExecuteAsync("""
            INSERT INTO opendata.opendart_cache (ticker, quarter, data_json, expires_at, published_at)
            VALUES (@ticker, @quarter, @data, @expires, @now)
            ON CONFLICT DO NOTHING
            """, new
            {
                ticker,
                quarter,
                data = """{"ticker":"005930","revenue":100000}""",
                expires = DateTime.UtcNow.AddDays(1),
                now = DateTime.UtcNow
            });

        // Act - Should return cached without API call
        var result = await _service.GetQuarterlyFinancialDataAsync(ticker, quarter);

        // Assert
        Assert.NotNull(result);
        Assert.Equal("005930", result.Ticker);
    }

    [Fact]
    public async Task GetQuarterlyFinancialData_Idempotent_MultipleCalls()
    {
        // Arrange
        var ticker = "005930";
        var quarter = "2024-Q1";

        // Act - Multiple calls should return same cached result
        var result1 = await _service.GetQuarterlyFinancialDataAsync(ticker, quarter);
        var result2 = await _service.GetQuarterlyFinancialDataAsync(ticker, quarter);

        // Assert - No API calls triggered (idempotent)
        await using var conn = await _dataSource.OpenConnectionAsync();
        var cacheCount = await conn.QueryFirstOrDefaultAsync<int>(
            "SELECT COUNT(*) FROM opendata.opendart_cache WHERE ticker = @ticker AND quarter = @quarter",
            new { ticker, quarter });

        Assert.Equal(1, cacheCount);  // Only 1 cache entry despite 2 calls
    }
}