using Budget.Api.Data;
using Budget.Api.Services;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Diagnostics.HealthChecks;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Diagnostics.HealthChecks;
using Microsoft.IdentityModel.Tokens;

var builder = WebApplication.CreateBuilder(args);

var connStr = builder.Configuration.GetConnectionString("DefaultConnection")
    ?? $"Host={builder.Configuration["POSTGRES_HOST"] ?? "localhost"};" +
       $"Port={builder.Configuration["POSTGRES_PORT"] ?? "5432"};" +
       $"Database={builder.Configuration["POSTGRES_DB"] ?? "budget"};" +
       $"Username={builder.Configuration["POSTGRES_USER"] ?? "budget"};" +
       $"Password={builder.Configuration["POSTGRES_PASSWORD"] ?? "changeme"}";

builder.Services.AddDbContext<AppDbContext>(opt => opt.UseNpgsql(connStr));

builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
    .AddJwtBearer(options =>
    {
        options.Authority = builder.Configuration["AUTH__AUTHORITY"];
        options.Audience = builder.Configuration["AUTH__AUDIENCE"];
        options.TokenValidationParameters = new TokenValidationParameters
        {
            ValidateIssuer = true,
            ValidateAudience = true,
            ValidateLifetime = true,
        };
    });

builder.Services.AddAuthorization();
builder.Services.AddScoped<BudgetAuthorizationService>();
builder.Services.AddControllers();
builder.Services.AddHealthChecks()
    .AddDbContextCheck<AppDbContext>();

var app = builder.Build();

// Apply EF migrations automatically on startup
using (var scope = app.Services.CreateScope())
{
    var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
    await db.Database.MigrateAsync();
}

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

app.UseAuthentication();
app.UseAuthorization();

app.UseMiddleware<KnownUserMiddleware>();

app.MapControllers();
app.MapHealthChecks("/healthz", new HealthCheckOptions
{
    ResultStatusCodes =
    {
        [HealthStatus.Healthy] = StatusCodes.Status200OK,
        [HealthStatus.Degraded] = StatusCodes.Status200OK,
        [HealthStatus.Unhealthy] = StatusCodes.Status503ServiceUnavailable,
    }
});

app.MapFallbackToFile("index.html");

app.Run();