MireaBackend/Persistence/DependencyInjection.cs

using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
using Mirea.Api.DataAccess.Persistence.Contexts.Schedule;
using Mirea.Api.DataAccess.Persistence.Properties;
using System;
using System.Collections.Generic;

namespace Mirea.Api.DataAccess.Persistence;

public static class DependencyInjection
{
    public static IServiceCollection AddPersistence(this IServiceCollection services, IConfiguration configuration)
    {
        var settings = configuration.GetSection(nameof(DbSettings)).Get<DbSettings>();
        var connection = settings?.ConnectionStringSql;

        Dictionary<DatabaseEnum, Action<DbContextOptionsBuilder>> dbConfigurations = new()
        {
            {
                DatabaseEnum.Mysql,
                options => options.UseMySql(connection, ServerVersion.AutoDetect(connection))
            },
            {
                DatabaseEnum.Sqlite,
                options => options.UseSqlite(connection)
            },
            {
                DatabaseEnum.PostgresSql,
                options => options.UseNpgsql(connection)
            }
        };

        if (dbConfigurations.TryGetValue((DatabaseEnum)settings?.TypeDatabase!, out var dbConfig))
        {
            services.AddDbContext<CampusDbContext>(dbConfig);
            services.AddDbContext<DisciplineDbContext>(dbConfig);
            services.AddDbContext<FacultyDbContext>(dbConfig);
            services.AddDbContext<GroupDbContext>(dbConfig);
            services.AddDbContext<LectureHallDbContext>(dbConfig);
            services.AddDbContext<LessonAssociationDbContext>(dbConfig);
            services.AddDbContext<ProfessorDbContext>(dbConfig);
            services.AddDbContext<LessonDbContext>(dbConfig);
            services.AddDbContext<TypeOfOccupationDbContext>(dbConfig);

            services.AddDbContext<UberDbContext>(dbConfig);
        }
        else
            throw new NotSupportedException("Unsupported database type");

        services.AddScoped<ICampusDbContext>(provider => provider.GetService<CampusDbContext>()!);
        services.AddScoped<IDisciplineDbContext>(provider => provider.GetService<DisciplineDbContext>()!);
        services.AddScoped<IFacultyDbContext>(provider => provider.GetService<FacultyDbContext>()!);
        services.AddScoped<IGroupDbContext>(provider => provider.GetService<GroupDbContext>()!);
        services.AddScoped<ILectureHallDbContext>(provider => provider.GetService<LectureHallDbContext>()!);
        services.AddScoped<ILessonAssociationDbContext>(provider => provider.GetService<LessonAssociationDbContext>()!);
        services.AddScoped<IProfessorDbContext>(provider => provider.GetService<ProfessorDbContext>()!);
        services.AddScoped<ILessonDbContext>(provider => provider.GetService<LessonDbContext>()!);
        services.AddScoped<ITypeOfOccupationDbContext>(provider => provider.GetService<TypeOfOccupationDbContext>()!);

        return services;
    }
}