using Worker.Models;
using Microsoft.EntityFrameworkCore;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.EntityFrameworkCore.Metadata.Internal;
using System.Text;
using Worker.Services;
using Microsoft.OpenApi.Models;

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(options =>
{
    options.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme()
    {
        Name = "Authorization",
        In = ParameterLocation.Header,
        Type = SecuritySchemeType.Http,
        Scheme = "Bearer"
    });

    options.AddSecurityRequirement(new OpenApiSecurityRequirement
    {
        {
            new OpenApiSecurityScheme
            {
                Reference = new OpenApiReference
                {
                    Type = ReferenceType.SecurityScheme,
                    Id = "Bearer"
                }
            },
            Array.Empty<string>()
        }
    });
});

// Initialize Database with correct connection string.
builder.Services.AddEntityFrameworkNpgsql().AddDbContext<ClothingItemContext>(options =>
    options.UseNpgsql(builder.Configuration.GetConnectionString("DefaultConnection")));

// Add Identity services to the container.
builder.Services.AddIdentity<User, IdentityRole>()
    .AddEntityFrameworkStores<ClothingItemContext>()
    .AddDefaultTokenProviders();

// Set up JWT authentication
builder.Services.AddAuthorization();
builder.Services.AddAuthentication(options => {
    options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
    options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
    options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
})
    .AddJwtBearer(options =>
    {
        options.TokenValidationParameters = new Microsoft.IdentityModel.Tokens.TokenValidationParameters
        {
            ValidateIssuerSigningKey = true,    // Make sure the token is valid from the key
            IssuerSigningKey = new Microsoft.IdentityModel.Tokens.SymmetricSecurityKey(Encoding.UTF8.GetBytes(builder.Configuration["JwtSettings:Secret"]!)),
            ValidateIssuer = false, // Not caring about where the token is coming from
            ValidateAudience = false,   // Not caring about who is receiving this token
            ValidateLifetime = true     // Ensure it's not expired
        };
    });

builder.Services.AddScoped<JwtService>();

// TODO Implement CORS functionality for API
builder.Services.AddCors(options =>
{
    options.AddPolicy(name: "frontend", policy =>
    {
        policy.AllowAnyOrigin()
              .AllowAnyMethod()
              .AllowAnyHeader();
    });
});

var app = builder.Build();

// Apply migrations to database
using (var scope = app.Services.CreateScope())
{
    var clothingItemContext = scope.ServiceProvider.GetRequiredService<ClothingItemContext>();
    clothingItemContext.Database.Migrate();
}

// Apply CORS policy
app.UseCors("frontend");

app.UseSwagger();
app.UseSwaggerUI();
// app.UseHttpsRedirection();
app.UseAuthentication();
app.UseAuthorization();
app.MapControllers();
app.Run();