package main

import (
	"os"
	"path/filepath"
	"regexp"
	"strings"
	"testing"
)

// The builder must work the same for every game: no game's name, id or code in its source, its rules for
// the model (AUTHORING.md), the schemas sent with every draft, or its docs. Games are read from games/,
// so a newly merged template is covered as soon as it lands.
func TestBuilderIsGameAgnostic(t *testing.T) {
	root := filepath.Join("..", "..")
	templates, _ := filepath.Glob(filepath.Join(root, "games", "*", "game.yaml"))
	if len(templates) == 0 {
		t.Fatal("no templates found to check against")
	}
	var names []string
	for _, f := range templates {
		g, err := loadMap(f)
		if err != nil {
			continue
		}
		for _, key := range []string{"id", "name"} {
			if s, _ := g[key].(string); len(s) > 2 {
				names = append(names, s)
			}
		}
	}

	files, _ := filepath.Glob("*.go")
	files = append(files, filepath.Join(root, "AUTHORING.md"), filepath.Join(root, "BUILDER.md"))
	schemas, _ := filepath.Glob(filepath.Join(root, "schema", "*.json"))
	files = append(files, schemas...)
	for _, f := range files {
		raw, err := os.ReadFile(f)
		if err != nil {
			t.Fatal(err)
		}
		text := string(raw)
		for _, n := range names {
			re := regexp.MustCompile(`(?i)(^|[^A-Za-z0-9])` + regexp.QuoteMeta(n) + `($|[^A-Za-z0-9])`)
			if loc := re.FindStringIndex(text); loc != nil {
				line := strings.Count(text[:loc[0]], "\n") + 1
				t.Errorf("%s:%d mentions %q: the builder must not name or copy any game", f, line, n)
			}
		}
	}
}