package base

import (
	"regexp"
	"testing"

	"amadan.net/oficina/estilo.git/internal/tokencheck"
)

func TestBaseUsesDefinedTokens(t *testing.T) {
	missing, n := tokencheck.Undefined(CSS())
	if n == 0 {
		t.Fatal("base.css reads no rastrillo token; the check would pass vacuously")
	}
	if len(missing) > 0 {
		t.Fatal("base.css reads undefined tokens:", missing)
	}
}

// Every selector in base.css must be wrapped in :where(), so that it has
// zero specificity and cannot outrank a component's own link colour.
// A bare "a { color }" here would repaint every menu item, row title and
// button in the suite.
func TestBaseRulesHaveZeroSpecificity(t *testing.T) {
	src := regexp.MustCompile(`(?s)/\*.*?\*/`).ReplaceAll(CSS(), nil)
	selectors := regexp.MustCompile(`(?m)^([^{}]+)\{`).FindAllSubmatch(src, -1)
	if len(selectors) == 0 {
		t.Fatal("no rules found in base.css")
	}
	for _, m := range selectors {
		sel := string(m[1])
		if !regexp.MustCompile(`^\s*:where\([^)]*\)\s*$`).MatchString(sel) {
			t.Errorf("selector %q is not a bare :where(...) and has specificity", sel)
		}
	}
}