package icons

import (
	"regexp"
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestForImage(t *testing.T) {
	cases := []struct {
		ref, want string
	}{
		{"gitea/gitea:1.27.3", "gitea"},
		{"ghcr.io/goauthentik/server:2026.8.2", "authentik"},
		{"postgres:17.10", "postgresql"},
		{"grafana/loki:3.4.2", "grafana"},
		{"docker.n8n.io/n8nio/n8n:1.112.4", "n8n"},
		{"lscr.io/linuxserver/prowlarr:latest", ""},
		{"localhost:5000/foo:v1", ""},
		{"gitea.shcizo.se/shcizo/slusk:v0.8.1", ""},
	}
	for _, c := range cases {
		t.Run(c.ref, func(t *testing.T) {
			assert.Equal(t, c.want, ForImage(c.ref))
		})
	}
}

// safePath is a strict allowlist for what an embedded path may contain, since
// the paths are written into the page's HTML.
var safePath = regexp.MustCompile(`^[MmLlHhVvCcSsQqTtAaZz0-9.,\- e]+$`)

func TestEmbeddedSet(t *testing.T) {
	assert.Greater(t, Count(), 3000)
	for slug, p := range paths {
		if !safePath.MatchString(p) {
			t.Errorf("icon %q has unexpected characters in its path", slug)
		}
	}
	p, ok := Path("gitea")
	assert.True(t, ok)
	assert.NotEmpty(t, p)
	_, ok = Path("no-such-icon")
	assert.False(t, ok)
}