// Copyright 2022 E99p1ant. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.

package i18n

import (
	"testing"
)

// TestDictionaryComplete 校验四种语言的字典 key 完全一致，防止漏翻译。
func TestDictionaryComplete(t *testing.T) {
	ref := dictionary[LangZhCN]
	langs := []string{LangZhTW, LangEn, LangJa}

	for _, lang := range langs {
		dict := dictionary[lang]
		if len(dict) != len(ref) {
			t.Errorf("%s: 词条数量 %d != 简体中文 %d", lang, len(dict), len(ref))
		}
		for key := range ref {
			if _, ok := dict[key]; !ok {
				t.Errorf("%s: 缺少词条 %q", lang, key)
			}
		}
		for key := range dict {
			if _, ok := ref[key]; !ok {
				t.Errorf("%s: 多出简体中文没有的词条 %q", lang, key)
			}
		}
	}
}

func TestResolve(t *testing.T) {
	cases := map[string]string{
		"":        LangZhCN,
		"zh-cn":   LangZhCN,
		"zh":      LangZhCN,
		"zh-TW":   LangZhTW,
		"zh-Hant": LangZhTW,
		"en":      LangEn,
		"en-US":   LangEn,
		"ja":      LangJa,
		"ja-JP":   LangJa,
		"fr":      LangZhCN, // 未知回退
		"  En  ":  LangEn,   // 自动去除首尾空白
		"zh_cn":   LangZhCN,
		"zh_tw":   LangZhTW,
		"zh_hk":   LangZhTW, // 香港繁体（下划线变体）
	}
	for in, want := range cases {
		if got := Resolve(in); got != want {
			t.Errorf("Resolve(%q) = %q, want %q", in, got, want)
		}
	}
}

func TestT(t *testing.T) {
	if got := T(LangZhCN, "nav.explore"); got != "探索" {
		t.Errorf("zh-CN nav.explore = %q", got)
	}
	if got := T(LangEn, "nav.explore"); got != "Explore" {
		t.Errorf("en nav.explore = %q", got)
	}
	if got := T(LangJa, "nav.explore"); got != "探索" {
		t.Errorf("ja nav.explore = %q", got)
	}
	// 参数填充
	if got := T(LangEn, "auth.recover.greeting", "admin"); got != "admin, you are resetting your password:" {
		t.Errorf("en auth.recover.greeting with arg = %q", got)
	}
	// 未知 key 回退返回 key 本身
	if got := T(LangEn, "no.such.key"); got != "no.such.key" {
		t.Errorf("unknown key = %q", got)
	}
}