NaturalIntelligence/Stubmatic

// @ts-check
var fs = require('fs');
var util = require('./../util/util');
var path = require('path');

//TODO: resolve daa-tables entries
/**
 * Include file contents from the given file directory
 * 
 * Eg: {{include( "fileName", 'fileName2', url[1], #dataTableColumn, "path/subpath/#dataTableColumn") }}
 * @param {string} data 
 * @param {string} dumpsdir root location off all the files
 * @param {object} store
 */
module.exports = function (data, dumpsdir, store, requestMatches){
    //var regx = "\\[\\[([^\\]]+)\\]\\]";
    var regx = "{{\\s*include\\(([^}]*)\\)\\s*}}";
    var matches = util.getAllMatches(data,regx);
    
    for(var i in matches){
        var match= matches[i];
        if(match[1].trim() === ''){
            //skip the error
        }else{
            const files = match[1].split(",");
            let contentToreplace = "";

            for (var index in files) {
                let fileName = files[index].trim();
                if(fileName === "") continue;
                if(fileName[0] === "'" || fileName[0] === '"') {
                    fileName = eval(fileName);
                    fileName = resolveDataTableExp(fileName, store);
                }else{
                    fileName = resolveRequestParamExp(fileName, requestMatches);
                }
                var filePath= path.join(dumpsdir , fileName);
                var readFileFlag = false;
                try{
                    contentToreplace += fs.readFileSync(filePath, {encoding: 'utf-8'});
                }catch(err){
                    //skip the error
                }
            }
            data = data.replace(match[0],contentToreplace);
        }
        
    }
    return data;
}

/**
 * 
 * @param {string} fileName 
 * @param {object} matches 
 */
function resolveRequestParamExp(fileName, matches){
    const regx = "([a-zA-Z]+)\\[\\s([0-9]+)\\s*\\]";
    const reqParamsPart = util.getMatches(fileName,regx);
    const paramName = reqParamsPart[1];
    const index =  reqParamsPart[2];
    return matches[paramName][index];
}

/**
 * 
 * @param {string} fileName 
 * @param {object} store 
 */
function resolveDataTableExp(fileName, store){
    const regx = "#([a-zA-Z0-9_]+)";
    const matches = util.getMatches(fileName,regx);
    if(matches){
        const columnName = matches[1];
        const matchingDataTable = store.resolvedRequest["data-table"];
        return  fileName.replace("#columnName", store.dataTables[matchingDataTable.name].get(matchingDataTable.key).value[columnName])
    }else{
        return fileName;
    }
}