Program.cs

using Microsoft.EntityFrameworkCore;
using PDFReader.API.DBModels;
using PDFReader.API.Repositories.Interfaces;
using PDFReader.API.Repositories;
using PDFReader.API.FileManagement.Interface;
using PDFReader.API.FileManagement;
using PDFReader.API.ExceptionHandling;
using Serilog;

var builder = WebApplication.CreateBuilder(args);
// Add services to the container.

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

// TODO handle possible exception from null or invalid conn string.
string? connectionString = Environment.GetEnvironmentVariable("PDFReaderConnectionString");
builder.Services.AddDbContext<PDFReaderDBContext>(options => options.UseSqlServer(connectionString));

builder.Services.AddScoped<IUserRepository, UserRepository>();
builder.Services.AddScoped<IFileMetadataRepository, FileMetadataRepository>();
builder.Services.AddScoped<IFileManager, FileManagerLocal>();

builder.Services.AddExceptionHandler<GlobalExceptionHandler>();
builder.Services.AddProblemDetails();

// Serilog Setup 
builder.Host.UseSerilog((context, configuration) =>
    configuration.ReadFrom.Configuration(context.Configuration));

var app = builder.Build();

app.UseExceptionHandler();


app.UseDefaultFiles();
app.UseStaticFiles();


// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

app.UseSerilogRequestLogging();

app.UseAuthorization();

app.MapControllers();

app.MapFallbackToFile("/index.html");

app.Run();