Program.cs

using FirebaseAdmin;
using Google.Apis.Auth.OAuth2;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;
using SUMS_Agent.Data;
using SUMS_Agent.Models;
using SUMS_Agent.Services;
using System.Text;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddControllers().AddNewtonsoftJson(options =>
    options.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore
);
builder.Services.AddTransient<IFCMService, FCMService>();

builder.Services.AddDbContext<TCUContext>(options =>
        options.UseNpgsql(
            builder.Configuration.GetConnectionString("TcuServerConnection")));


builder.Services.AddDbContext<ApplicationDbContext>(options =>
        options.UseNpgsql(
            builder.Configuration.GetConnectionString("TcuServerConnection")));

builder.Services.AddIdentity<IdentityUser, IdentityRole>()
.AddDefaultTokenProviders()
        .AddEntityFrameworkStores<ApplicationDbContext>();

builder.Services.AddHostedService<UpdatePublisherService>();

builder.Services.AddControllers();
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

builder.Services.AddAuthorization(options =>
{
    options.AddPolicy("TCUOnly", policy =>
    {
        policy.RequireClaim("TCU", "True");
    });

    options.AddPolicy("MobileOnly", policy =>
    {
        policy.RequireClaim("deviceId");
    });
});

builder.Services.AddAuthentication(options =>
{
    options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
    options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
    options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
}).AddJwtBearer(options =>
{
    options.SaveToken = true;
    options.RequireHttpsMetadata = false;
    options.TokenValidationParameters = new TokenValidationParameters()
    {
        ValidateIssuer = true,
        ValidateAudience = true,
        ValidAudience = builder.Configuration["JWT:ValidAudience"],
        ValidIssuer = builder.Configuration["JWT:ValidIssuer"],
        IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(builder.Configuration["JWT:Secret"]))
    };
});

var googleCredentialsPath = builder.Configuration.GetSection("notifications:GoogleCredentialsFile").Value;

var defaultApp = FirebaseApp.Create(new AppOptions()
{
    Credential = GoogleCredential.FromFile(googleCredentialsPath),
});

var app = builder.Build();

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


app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();
app.MapControllers();

app.Run();