package auth

import (
	"context"
	"errors"
	"net/http"
	"net/http/httptest"
	"testing"

	appdb "github.com/example/sndit/backend/internal/db"
	"github.com/gin-gonic/gin"
)

func TestRegisterLoginAndSession(t *testing.T) {
	ctx := context.Background()
	database, err := appdb.New(ctx, "sqlite", ":memory:")
	if err != nil {
		t.Fatalf("open sqlite database: %v", err)
	}
	defer database.Close()
	if _, err := database.ExecContext(ctx, `
		CREATE TABLE users (
			id TEXT PRIMARY KEY NOT NULL,
			email TEXT NOT NULL UNIQUE,
			password_hash TEXT NOT NULL,
			name TEXT NOT NULL,
			created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
			updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
		)
	`); err != nil {
		t.Fatalf("create users table: %v", err)
	}

	service, err := NewService(NewRepository(database), "test-session-secret-that-is-long-enough", false)
	if err != nil {
		t.Fatalf("create auth service: %v", err)
	}
	user, err := service.Register(ctx, "Photographer@Example.com", "DemoPassword123!", "Noah Bianchi")
	if err != nil {
		t.Fatalf("register user: %v", err)
	}
	if user.Email != "photographer@example.com" {
		t.Fatalf("email was not normalized: %q", user.Email)
	}
	loggedIn, err := service.Login(ctx, "PHOTOGRAPHER@example.com", "DemoPassword123!")
	if err != nil || loggedIn.ID != user.ID {
		t.Fatalf("login failed: user=%+v err=%v", loggedIn, err)
	}
	updated, err := service.UpdateProfile(ctx, user.ID, "updated@example.com", "Updated Studio")
	if err != nil || updated.Email != "updated@example.com" || updated.Name != "Updated Studio" {
		t.Fatalf("profile update failed: user=%+v err=%v", updated, err)
	}
	if err := service.ChangePassword(ctx, user.ID, "DemoPassword123!", "NewPassword123!"); err != nil {
		t.Fatalf("password update failed: %v", err)
	}
	if _, err := service.Login(ctx, "updated@example.com", "DemoPassword123!"); !errors.Is(err, ErrInvalidCredentials) {
		t.Fatalf("old password should be invalid, got %v", err)
	}
	if _, err := service.Login(ctx, "updated@example.com", "NewPassword123!"); err != nil {
		t.Fatalf("new password should work: %v", err)
	}

	recorder := httptest.NewRecorder()
	ginContext, _ := gin.CreateTestContext(recorder)
	ginContext.Request = httptest.NewRequest(http.MethodGet, "/api/auth/me", nil)
	service.SetSession(ginContext, user)
	request := httptest.NewRequest(http.MethodGet, "/api/auth/me", nil)
	request.AddCookie(recorder.Result().Cookies()[0])
	fromSession, err := service.UserFromRequest(ctx, request)
	if err != nil || fromSession.ID != user.ID {
		t.Fatalf("session lookup failed: user=%+v err=%v", fromSession, err)
	}
}