package infra

import (
	"strings"
	"testing"
	"time"
)

func TestJWTGenerate_ReturnsThreeSegments(t *testing.T) {
	claims := JWTClaims{
		Subject:   "user-1",
		ExpiresAt: time.Now().Add(time.Hour).Unix(),
	}
	token, err := JWTGenerate(claims, "test-secret-0123456789abcdef")
	if err != nil {
		t.Fatalf("JWTGenerate error: %v", err)
	}
	parts := strings.Split(token, ".")
	if len(parts) != 3 {
		t.Fatalf("esperados 3 segmentos, got %d en %q", len(parts), token)
	}
	for i, p := range parts {
		if p == "" {
			t.Fatalf("segmento %d vacio", i)
		}
	}
}

func TestJWTGenerate_FillsIssuedAtWhenZero(t *testing.T) {
	claims := JWTClaims{
		Subject:   "user-1",
		ExpiresAt: time.Now().Add(time.Hour).Unix(),
	}
	before := time.Now().Unix()
	token, err := JWTGenerate(claims, "s")
	if err != nil {
		t.Fatalf("JWTGenerate error: %v", err)
	}
	after := time.Now().Unix()
	parsed, err := JWTValidate(token, "s")
	if err != nil {
		t.Fatalf("JWTValidate error: %v", err)
	}
	if parsed.IssuedAt < before || parsed.IssuedAt > after {
		t.Fatalf("IssuedAt %d fuera del rango [%d,%d]", parsed.IssuedAt, before, after)
	}
}

func TestJWTGenerate_ErrorsOnEmptySecret(t *testing.T) {
	_, err := JWTGenerate(JWTClaims{Subject: "x"}, "")
	if err == nil {
		t.Fatal("esperaba error con secret vacio")
	}
}