/*
 * 选择器 - 非唯一性关系链，将【中文表述】转换为【关系链】
*/
import _filter from './rule/filter';
import _replace from './rule/replace';
import _similar from './rule/similar';

import {zh2number} from './unit';
import {reverseId,filterId,getGenById} from './id';
import _cache from './cache';

// 获得最简
var getOptimal = function(options){
    var {from,to,sex} = options;
    var from_chain = options['from'].split(',');
    var to_chain = options['to'].split(',');
    for(var i=0;i<from_chain.length&&i<to_chain.length;i++){
        if(from_chain[i]==to_chain[i]){
            from = from_chain.slice(i+1).join(',');
            to = to_chain.slice(i+1).join(',');
            sex = from_chain[i].match(/^([fhs1](&[ol\d]+)?|[olx]b)(&[ol\d]+)?/)?1:0;
            continue;
        }else{
            if(getGenById(from_chain[i])==getGenById(to_chain[i])&&from_chain[i].match(/^[xol][bs]|^[sd]/)&&to_chain[i].match(/^[xol][bs]|^[sd]/)){
                var form_type = from_chain[i].replace(/&([ol\d]+)/,'').replace(/^[xol]([bs])/,'$1');
                var to_type = to_chain[i].replace(/&([ol\d]+)/,'').replace(/^[xol]([bs])/,'$1');
                if(form_type!=to_type){
                    break;
                }
                var from_match = from_chain[i].match(/&([ol\d]+)/);
                var to_match = to_chain[i].match(/&([ol\d]+)/);
                if(!from_match){
                    from_match = from_chain[i].match(/([ol])[bs]/);
                }
                if(!to_match){
                    to_match = to_chain[i].match(/([ol])[bs]/);
                }
                var from_attr = from_match?from_match[1]:'';
                var to_attr = to_match?to_match[1]:'';
                if(from_attr&&to_attr){
                    if(!isNaN(from_attr)&&!isNaN(to_attr)){
                        if(+from_attr>+to_attr){
                            from_chain[i] = from_chain[i].replace(/^[xol]b|^s/,'lb').replace(/^[xol]s|^d/,'ls');
                        }else if(+from_attr<+to_attr){
                            from_chain[i] = from_chain[i].replace(/^[xol]b|^s/,'ob').replace(/^[xol]s|^d/,'os');
                        }
                    }else if(!isNaN(from_attr)&&to_attr=='o'||from_attr=='l'&&!isNaN(to_attr)){
                        from_chain[i] = from_chain[i].replace(/^[xol]b|^s/,'lb').replace(/^[xol]s|^d/,'ls');
                    }else if(!isNaN(from_attr)&&to_attr=='l'||from_attr=='o'&&!isNaN(to_attr)){
                        from_chain[i] = from_chain[i].replace(/^[xol]b|^s/,'ob').replace(/^[xol]s|^d/,'os');
                    }
                    from = from_chain.slice(i).join(',');
                    to = to_chain.slice(i+1).join(',');
                    sex = to_chain[i].match(/^([fhs1](&[ol\d]+)?|[olx]b)(&[ol\d]+)?/)?1:0;
                }else if(options['optimal']){
                    from_match = from_chain[i].match(/([xol])[bs]/);
                    to_match = to_chain[i].match(/([xol])[bs]/);
                    from_attr = from_match?from_match[1]:'';
                    to_attr = to_match?to_match[1]:'';
                    if(from_attr=='x'||to_attr=='x'){
                        from = from_chain.slice(i+1).join(',');
                        to = to_chain.slice(i+1).join(',');
                        sex = from_chain[i].match(/^([fhs1](&[ol\d]+)?|[olx]b)(&[ol\d]+)?/)?1:0;
                        continue;
                    }
                }
            }
            break;
        }
    }
    return {
        'from':from,
        'to':to,
        'sex':sex
    };
};

// 中文获取选择器
export function getSelectors(str){
    str = str.replace(/之/g,'的').replace(/吾之?(.+)/,'$1').replace(/我的?(.+)/,'$1');
    // 惯用口语标准化
    // str = str.replace(/(?<![娘婆岳亲])家的?(?=(孩子|儿子|女儿))/,'的');
    if(str.match(/[^娘婆岳亲]家的?(孩子|儿子|女儿)/)){
        str = str.replace(/家的?/,'的');
    }
    str = str.replace(/(舅|姑)+(爸|父|丈|妈|母)?家的?(哥|姐|弟|妹)+/,'$1表$3').replace(/(舅|姑)+(爸|父|丈|妈|母)?家的?/,'$1表');
    str = str.replace(/(伯|叔)+(父|母)?家的?(哥|姐|弟|妹)+/,'堂$3').replace(/(伯|叔)+(父|母)?家的?/,'堂');
    str = str.replace(/姨+(爸|父|丈|妈|母)?家的?(哥|姐|弟|妹)+/,'姨$2').replace(/姨+(爸|父|丈|妈|母)?家的?/,'姨');

    var lists = str.split('的');
    var result = [];
    var isMatch = true;
    while(lists.length){
        var name = lists.shift();           //当前匹配词
        var items = [];                     //当前匹配词可能性
        var x_items = [];
        var r_items = [];
        var i_items = [];
        var keywords = [name];
        var getList = function(name){
            // 词义扩展
            _replace.forEach(item => {
                item['arr'].forEach(word =>{
                    var name1 = name.replace(item['exp'],word);
                    if(name1!=name){
                        keywords.push(name1);
                        getList(name1);
                    }
                });
            });
            // 同义词替换
            for(var word in _similar){
                var name1 = name.replace(word,_similar[word]);
                var name2 = name.replace(_similar[word],word);
                if(name1!=name){
                    keywords.push(name1);
                }
                if(name2!=name){
                    keywords.push(name2);
                }
            }
        };
        getList(name);
        // 通过关键词找关系
        keywords.forEach(function(name){
            var match = name.match(/^[大|小]|^[一|二|三|四|五|六|七|八|九|十]+/);
            if(match){
                var x_name = name.replace(match[0],'几');
                var r_name = name.replace(match[0],'');
                var num = zh2number(match[0]);
                var x_ids = _cache[x_name]||[];
                var r_ids = _cache[r_name]||[];
                var i_ids = _cache[name]||[];
                if(x_ids.length){
                    x_ids.forEach(function(i){
                        var r_i = i.replace(/(,[hw])$/,'&'+num+'$1').replace(/([^hw]+)$/,'$1&'+num);
                        x_items.push(r_i);
                    });
                }else if(r_ids.length){
                    r_ids.forEach(function(i){
                        var r_i = i.replace(/(,[hw])$/,'&'+num+'$1').replace(/([^hw]+)$/,'$1&'+num);
                        if(!i.match(/^[mf,]+$/)&&!r_name.match(/^[从世]/)){  // 直系祖辈不参与排序
                            r_items.push(r_i);
                        }
                    });
                }else{
                    i_ids.forEach(function(i){
                        var r_i = i.replace(/(,[hw])$/,'&'+num+'$1').replace(/([^hw]+)$/,'$1&'+num);
                        i_items.push(r_i);
                    });
                }
            }
            items = items.concat(_cache[name]||[]);
        });
        // console.log('[keywords]',keywords);
        // 如找不到结果，再是否存在称呼的排行问题(不直接判断，因存在"大舅""三从父兄""三世祖"这样特俗含义的情况)
        if(!items.length){
            items = x_items;
        }
        if(!items.length){
            items = r_items;
        }
        if(!items.length){
            items = i_items;
        }
        // 完全匹配不到结果
        if(!items.length){
            isMatch = false;
        }
        var res = [];
        if(!result.length){
            result = [''];
        }
        result.forEach(function(a){
            items.forEach(function(b){
                res.push(a+(b?','+b:''));
            });
        });
        result = res;
    }
    return isMatch?result:[];
};

// 合并选择器，查找两个对象之间的关系
export function mergeSelector(param){
    var {from:from_selector,to:to_selector,sex:my_sex} = param;
    if(my_sex<0){
        var to_sex = -1;
        var from_sex = -1;
        if(from_selector.match(/^,[w1]/)){
            from_sex = 1;
        }else if(from_selector.match(/^,[h0]/)){
            from_sex = 0;
        }
        if(to_selector.match(/^,[w1]/)){
            to_sex = 1;
        }else if(to_selector.match(/^,[h0]/)){
            to_sex = 0;
        }
        if(from_sex==-1&&to_sex>-1){
            my_sex = to_sex;
        }else if(from_sex>-1&&to_sex==-1){
            my_sex = from_sex;
        }else if(from_sex==to_sex){
            my_sex = from_sex;
        }else{
            return [];
        }
    }
    var from_ids = selector2id(param['from'],my_sex);
    var to_ids = selector2id(param['to'],my_sex);
    if(!from_ids.length||!to_ids.length){
        return [];
    }
    var result = [];
    from_ids.forEach(function(from){
        to_ids.forEach(function(to){
            var sex = my_sex;
            var selector = ','+to;
            if(selector.match(/,([fhs1](&[ol\d]+)?|[olx]b)(&[ol\d]+)?$/)){
                sex = 1;
            }
            if(selector.match(/,([mwd0](&[ol\d]+)?|[olx]s)(&[ol\d]+)?$/)){
                sex = 0;
            }
            if(from&&to){
                var isOptimal = param.optimal;
                if(from.match(/&\d+/)||to.match(/&\d+/)){
                    isOptimal = true;
                }
                if(isOptimal){
                    var ops = getOptimal({
                        'from':from,
                        'to':to,
                        'sex':my_sex,
                        'optimal':param.optimal
                    });
                    from = ops['from'];
                    to = ops['to'];
                    my_sex = ops['sex'];
                }
            }
            var to_rids = to?reverseId(to,my_sex):[''];
            to_rids.forEach(function(to_r){
                var selector = (to_r?','+to_r:'')+(from?','+from:'');
                result.push({
                    'selector':selector,
                    'sex':sex
                });
            });
        });
    });
    return result;
};

// 扩展选择器
export function expandSelector(selector){
    var result = [];
    var hash = {};
    var getSelector = function(selector){
        var s='';
        if(!hash[selector]){
            hash[selector] = true;
            do{
                s = selector;
                for(var item of _filter){
                    // console.log('[filter]',item['exp'],selector);
                    selector = selector.replace(item['exp'],item['str']);
                    if(selector.includes('#')){
                        selector.split('#').forEach(getSelector);
                        return false;
                    }
                }
            }while(s!=selector);
            if(selector.match(/,[mwd0](&[ol\d+])?,w|,[hfs1](&[ol\d]+)?,h/)){  //同志关系去除
                return false;
            }
            result.push(selector);
        }
    };
    getSelector(selector);
    return result;
};

// 选择器转ID
export function selector2id(selector,sex){
    if(!selector.match(/^,/)){
        selector = ','+selector;
    }
    //性别判断
    if(sex<0){
        if(selector.match(/^,[w1]/)){
            sex = 1;
        }else if(selector.match(/^,[h0]/)){
            sex = 0;
        }
    }else if(sex==1&&selector.match(/^,[h0]/)){
        return [];
    }else if(sex==0&&selector.match(/^,[w1]/)){
        return [];
    }
    if(sex>-1&&!selector.includes(',1')&&!selector.includes(',0')){
        selector = ','+sex+selector;
    }
    if(selector.match(/,[mwd0](&[ol\d]+)?,w|,[hfs1](&[ol\d]+)?,h/)){  //同志关系去除
        return [];
    }
    var result = expandSelector(selector).map(function(selector){
        return selector.replace(/,[01]/,'').substr(1);  //去前面逗号和性别信息
    });
    return filterId(result);
};