using back.Options;
using back.persistance.data;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Options;

namespace back.ServicesExtensions;

public static partial class ServicesExtensions
{
    private static IServiceCollection AddDatabaseContext(this IServiceCollection services)
    {
        services.AddContext<DataContext>();

        return services;
    }
    private static IServiceCollection AddContext<T>(this IServiceCollection services)
        where T : DbContext
    {
        var config = services
            .BuildServiceProvider()
            .GetRequiredService<IOptionsSnapshot<DatabaseConfig>>()
            .Get(DatabaseConfig.DataStorage);

        services.AddDbContext<T>(options =>
        {
            options.UseDatabaseConfig(config);
        });

        using var scope = services.BuildServiceProvider().CreateScope();
        var context = scope.ServiceProvider
            .GetRequiredService<T>();
        var isDevelopment = scope.ServiceProvider
            .GetRequiredService<IHostEnvironment>()
            .IsDevelopment();

        if (isDevelopment && !context.Database.HasPendingModelChanges())
        {
            context.Database.EnsureCreated();
        }
        else
        {
            context.Database.EnsureCreated();
            context.Database.Migrate();
        }
        context.SaveChanges();

        return services;
    }
}