package main

import (
	"regexp"
	"sort"
	"strings"
	"testing"

	"countrygame/web"
)

var placeholder = regexp.MustCompile(`\{(\w+)\}`)

func placeholders(s string) string {
	var found []string
	for _, m := range placeholder.FindAllStringSubmatch(s, -1) {
		found = append(found, m[1])
	}
	sort.Strings(found)
	return strings.Join(found, ",")
}

// English and French must offer exactly the same strings with the same {placeholders}.
func TestI18nParity(t *testing.T) {
	en := load(t, "js/i18n/en.json")
	fr := load(t, "js/i18n/fr.json")

	for k, v := range en {
		other, ok := fr[k]
		if !ok {
			t.Errorf("fr.json is missing %q", k)
			continue
		}
		enText, _ := v.(string)
		frText, _ := other.(string)
		if strings.TrimSpace(enText) == "" || strings.TrimSpace(frText) == "" {
			t.Errorf("%q has an empty string in en or fr", k)
		}
		if placeholders(enText) != placeholders(frText) {
			t.Errorf("%q: placeholders differ (en %q, fr %q)", k, placeholders(enText), placeholders(frText))
		}
	}
	for k := range fr {
		if _, ok := en[k]; !ok {
			t.Errorf("en.json is missing %q", k)
		}
	}
}

// Every scenario in the index exists, and every scenario file is in the index.
func TestScenarioIndex(t *testing.T) {
	index := load(t, "data/scenarios/index.json")
	listed := map[string]bool{}
	for _, id := range index["scenarios"].([]any) {
		listed[id.(string)] = true
		sc := load(t, "data/scenarios/"+id.(string)+".json")
		if sc["id"] != id {
			t.Errorf("scenarios/%s.json has id %v", id, sc["id"])
		}
		if !isLocalized(sc["name"]) {
			t.Errorf("scenario %s needs a name in en and fr", id)
		}
	}
	if len(listed) == 0 {
		t.Error("scenarios/index.json lists no scenario")
	}
	entries, err := web.Files.ReadDir("data/scenarios")
	if err != nil {
		t.Fatal(err)
	}
	for _, e := range entries {
		id := strings.TrimSuffix(e.Name(), ".json")
		if e.Name() != "index.json" && !listed[id] {
			t.Errorf("scenarios/%s is not listed in scenarios/index.json", e.Name())
		}
	}
}