function loadJSONSync(url) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, false); // false 表示同步请求
    try {
        xhr.send(null);
        if (xhr.status === 200) {
            return JSON.parse(xhr.responseText);
        } else {
            console.error('请求失败，状态码:', xhr.status);
            return null;
        }
    } catch (e) {
        console.error('请求过程中出错:', e);
        return null;
    }
}


class I18n {
    constructor() {
        this.currentLang = localStorage.getItem('language') || 'zh';
        this.translations = {};
        this.loadLanguage(this.currentLang);
        this.updateLanguageSelect();
    }

    async loadLanguage(lang) {
        try {
            var data = loadJSONSync(`./assets/js/lang/${lang}.json`);
            // console.log(data);
            this.translations = data;
            this.updatePageContent();
            this.updateLanguageSelect();
            
            // 如果菜单已初始化，重新渲染菜单
            if (window.menu) {
                window.menu.render();
            }
        } catch (error) {
            console.error('Error loading language file:', error);
        }
    }

    setLanguage(lang) {
        this.currentLang = lang;
        localStorage.setItem('language', lang);
        this.loadLanguage(lang);
    }
	setLanguagehome(lang) {
	    this.currentLang = lang;
	    localStorage.setItem('language', lang);
		window.location.reload();
	}
    translate(key) {
        const keys = key.split('.');
        let value = this.translations;
        
        for (const k of keys) {
            if (value && value[k] !== undefined) {
                value = value[k];
            } else {
                return key;
            }
        }
        
        return value;
    }

    updatePageContent() {
        var data = this.translations;
        
        // 常规文本内容
        $('[data-i18n]').each(function() {
            const keys = $(this).data('i18n').split('.');
            let value = data;
            
            keys.forEach(key => {
                value = value[key];
            });
            
            $(this).text(value || '');
        });
        
        // placeholder翻译
        $('[data-i18n-placeholder]').each(function() {
            const keys = $(this).data('i18n-placeholder').split('.');
            let value = data;
            keys.forEach(key => {
                value = value[key];
            });
            $(this).attr('placeholder', value || '');
        });
        
        // option文本翻译
        $('option[data-i18n]').each(function() {
            const keys = $(this).data('i18n').split('.');
            let value = data;
            
            keys.forEach(key => {
                value = value[key];
            });
            
            $(this).text(value || '');
        });
    }

    updateLanguageSelect() {
        // 更新语言选择下拉框的选中状态
        const select = document.querySelector('.language-switch select');
        if (select) {
            select.value = this.currentLang;
        }
    }
}

// 创建全局实例
window.i18n = new I18n();