@zargu/couchdb-designer/src/util/createFieldsMap.js

Create and testing couchdb design document form directory structure.

const createFieldsMap = fields => {
    return doc => {
        let result = {};
        for(let field of fields){
            let path = field.split('.');
            if(path.length > 1){
                let exist = true;
                let subDoc = doc;
                for(let key of path){
                    if(typeof subDoc === 'object' && key in subDoc){
                        subDoc = subDoc[key];
                    }else{
                        exist = false;
                        break;
                    }
                }
                if(exist){
                    let subResult = result;
                    do{
                        let key = path.shift();
                        if(path.length){
                            subResult[key] = subDoc;
                        }else{
                            if(key in subResult){
                                subResult = subResult[key];
                            }else{
                                subResult[key] = {};
                                subResult = subResult[key];
                            }
                        }
                    }while(path.length)
                }
            }else{
                if(path[0] in doc){
                    result[path[0]] = doc[path[0]];
                }
            }
        }
        return result;
    }
}

export default createFieldsMap;