using System;
using System.IO;
using System.Text.Json;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using NexusReader.Data.Persistence;
using Xunit;

namespace NexusReader.Application.Tests.Queries;

public class CheckDatabaseTest
{
    [Fact(Skip = "Requires live Postgres database in Docker")]
    public async Task PrintDatabaseStats()
    {
        var configJson = await File.ReadAllTextAsync("../../../../../src/NexusReader.Web/appsettings.json");
        var doc = JsonDocument.Parse(configJson);
        var pgConn = doc.RootElement.GetProperty("ConnectionStrings").GetProperty("PostgresConnection").GetString();
        
        Console.WriteLine($"Postgres Connection: {pgConn}");
        
        var optionsBuilder = new DbContextOptionsBuilder<AppDbContext>();
        optionsBuilder.UseNpgsql(pgConn);
        
        using var context = new AppDbContext(optionsBuilder.Options);
        
        var usersCount = await context.Users.CountAsync();
        var ebooksCount = await context.Ebooks.CountAsync();
        var unitsCount = await context.KnowledgeUnits.CountAsync();
        var cacheCount = await context.SemanticKnowledgeCache.CountAsync();
        
        Console.WriteLine($"=== DATABASE STATS ===");
        Console.WriteLine($"Users: {usersCount}");
        Console.WriteLine($"Ebooks: {ebooksCount}");
        Console.WriteLine($"KnowledgeUnits: {unitsCount}");
        Console.WriteLine($"SemanticKnowledgeCache: {cacheCount}");
        
        var users = await context.Users.ToListAsync();
        foreach (var u in users)
        {
            Console.WriteLine($"User: {u.Email}, TenantId: '{u.TenantId}'");
        }
        
        var ebooks = await context.Ebooks.ToListAsync();
        foreach (var eb in ebooks)
        {
            Console.WriteLine($"Ebook Id: {eb.Id}, Title: '{eb.Title}', FilePath: '{eb.FilePath}', Ready: {eb.IsReadyForReading}");
        }
        
        var cache = await context.SemanticKnowledgeCache.ToListAsync();
        foreach (var c in cache)
        {
            Console.WriteLine($"Cache Hash: {c.ContentHash}, TenantId: '{c.TenantId}', PromptVersion: {c.PromptVersion}, JsonData Preview: {c.JsonData.Substring(0, Math.Min(c.JsonData.Length, 150))}");
        }
        
        Assert.True(true);
    }
}