package surf

import (
	"net/http"
	"net/http/httptest"
	"testing"
)

func TestIntParamMalformedIsFalse(t *testing.T) {
	req := httptest.NewRequest(http.MethodGet, "/items/abc", nil)
	req.SetPathValue("id", "abc")
	if _, ok := IntParam(req, "id"); ok {
		t.Fatal("malformed id must be false")
	}
	req.SetPathValue("id", "12")
	n, ok := IntParam(req, "id")
	if !ok || n != 12 {
		t.Fatalf("got %d %t", n, ok)
	}
	req.SetPathValue("id", "0")
	if _, ok := IntParam(req, "id"); ok {
		t.Fatal("non-positive id must be false")
	}
	req.SetPathValue("id", "")
	if _, ok := IntParam(req, "id"); ok {
		t.Fatal("missing id must be false")
	}
	if _, ok := IntParam(nil, "id"); ok {
		t.Fatal("nil request must be false")
	}
}

func TestRegexCompilesAtRegistration(t *testing.T) {
	c, err := Regex("id", `[0-9]+`)
	if err != nil {
		t.Fatal(err)
	}
	if !c.match("12") || c.match("nope") || c.match("") {
		t.Fatal("regex match")
	}
	if _, err := Regex("id", "["); err == nil {
		t.Fatal("want invalid regex error")
	}
	if _, err := Regex("", `[0-9]+`); err == nil {
		t.Fatal("want empty param error")
	}
}

func TestEnumAllowListDoesNotBuildRegexFromValues(t *testing.T) {
	c, err := Enum("kind", "widget", "gadget")
	if err != nil {
		t.Fatal(err)
	}
	if c.re != nil {
		t.Fatal("enum must not compile a regex")
	}
	if !c.match("widget") || !c.match("gadget") || c.match("other") || c.match("widget|gadget") {
		t.Fatal("enum match")
	}
	if _, err := Enum("kind"); err == nil {
		t.Fatal("want empty enum error")
	}
}