using System.Text;
using FlatRender.StudioSvc.Application.Services;
using FlatRender.StudioSvc.Domain.Enums;
using FlatRender.StudioSvc.Infrastructure.Data;
using FlatRender.StudioSvc.Middleware;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;
using Microsoft.OpenApi.Models;
using Npgsql;

var builder = WebApplication.CreateBuilder(args);

// ── Database ─────────────────────────────────────────────────────────────────
// Native PostgreSQL enums are mapped on the EF provider so Npgsql can read/write them
// at runtime (HasPostgresEnum in the model alone is not enough on Npgsql 8+).
builder.Services.AddDbContext<StudioDbContext>(opt =>
    opt.UseNpgsql(
        builder.Configuration.GetConnectionString("Default"),
        npgsql => npgsql.MapEnum<SavedProjectType>("saved_project_type", "studio", PreserveCaseNameTranslator.Instance))
       .UseSnakeCaseNamingConvention());

// ── Application services ──────────────────────────────────────────────────────
builder.Services.AddScoped<StudioService>();

// ── Auth ──────────────────────────────────────────────────────────────────────
var jwtKey = builder.Configuration["Jwt:Key"]
    ?? throw new InvalidOperationException("Jwt:Key is required");

builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
    .AddJwtBearer(opt =>
    {
        opt.TokenValidationParameters = new TokenValidationParameters
        {
            ValidateIssuerSigningKey = true,
            IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(jwtKey)),
            ValidateIssuer = true,
            ValidIssuer = builder.Configuration["Jwt:Issuer"],
            ValidateAudience = true,
            ValidAudience = builder.Configuration["Jwt:Audience"],
            ValidateLifetime = true,
            ClockSkew = TimeSpan.FromSeconds(30),
        };
    });

builder.Services.AddAuthorization();

// ── Controllers ───────────────────────────────────────────────────────────────
builder.Services.AddRouting(opts =>
{
    opts.LowercaseUrls = true;
    opts.AppendTrailingSlash = false;
});

builder.Services.AddControllers();

// ── Swagger ───────────────────────────────────────────────────────────────────
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new OpenApiInfo { Title = "FlatRender Studio Service", Version = "v1" });
    c.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme
    {
        Name = "Authorization",
        Type = SecuritySchemeType.Http,
        Scheme = "bearer",
        BearerFormat = "JWT",
        In = ParameterLocation.Header
    });
    c.AddSecurityRequirement(new OpenApiSecurityRequirement
    {
        {
            new OpenApiSecurityScheme
            {
                Reference = new OpenApiReference { Type = ReferenceType.SecurityScheme, Id = "Bearer" }
            },
            []
        }
    });
});

// ── CORS ──────────────────────────────────────────────────────────────────────
builder.Services.AddCors(opt =>
    opt.AddDefaultPolicy(p => p
        .WithOrigins(
            builder.Configuration.GetSection("Cors:Origins").Get<string[]>()
            ?? ["http://localhost:3000"])
        .AllowAnyHeader()
        .AllowAnyMethod()));

// ── Health check ──────────────────────────────────────────────────────────────
builder.Services.AddHealthChecks();

// ─────────────────────────────────────────────────────────────────────────────
var app = builder.Build();

// ── Auto-migrate in Development ───────────────────────────────────────────────
if (app.Environment.IsDevelopment())
{
    using var scope = app.Services.CreateScope();
    await scope.ServiceProvider.GetRequiredService<StudioDbContext>()
        .Database.MigrateAsync();
}

// ── Middleware pipeline ───────────────────────────────────────────────────────
app.UseMiddleware<ExceptionMiddleware>();

if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "Studio v1"));
}

app.UseCors();
app.UseAuthentication();
app.UseAuthorization();
app.MapControllers();
app.MapHealthChecks("/health");

app.Run();