string rootFolder = silEnv("sil.home");
string [] ignoredFolderPrefixes = ".|_|!|examples"; //<-- add folder names or prefixes in order to have them ignored by search
string seperator = "/"; //<-- for windows servers change to "\\"

//searches for SIL code that is found in validators
function searchValScripts(string dir) {
    string [] res;
    for(string file in findFiles(dir, ".*")) {
        string text = readFromTextFile(file);
        if(contains(text, "return false") == true && contains(text, "customfield") == true) {
            res += file;
        }
    }
    
    return res;
}

//searches for SIL code for use of null keyword
function searchNullScripts(string dir) {
    string [] res;
    for(string file in findFiles(dir, ".*")) {
        string text = readFromTextFile(file);
        if(contains(text, " null") == true || contains(text, " Null") == true) {
            res += file;
        }
    }
    
    return res;
}

//an attempt to make a recursive directory search
function getAllDirs(string root) {
    string [] dirs = findDirectories(root, ".*");;
    string [] subDirs = dirs;
    int loopCount = 0;
    
    while(size(subDirs) > 0 && loopCount < 100) {
        string [] temp;
        for(string sd in subDirs) {
            boolean systemFolder = false;
            string [] dirNames = split(replace(sd, seperator, "@"), "@");
            
            for(string name in dirNames) {
                for(string pre in ignoredFolderPrefixes) {
                    if(startsWith(name, pre)) {
                        systemFolder = true;
                    }
                }
            }
            
            if(!systemFolder) {
                temp += findDirectories(sd, ".*");
            } 
        }
        dirs += temp;
        subDirs = temp;
        loopCount ++;
    }
    
    dirs = arrayToSet(dirs);
    return arraySort(dirs, false);
}

//-----start checking the files-----
string [] vals = searchValScripts(rootFolder);
string [] nulls = searchNullScripts(rootFolder);

//loop through all the files found
for(string dir in getAllDirs(rootFolder)) {
    vals += searchValScripts(dir); //call validator function to check files
    nulls += searchNullScripts(dir); //call nulls function to check files
}

//make validator output pretty
if(size(vals) > 0) {
    string list = "<strong>Validators to check [" + trim(size(vals)) + "]:</strong>\n<ol>\n";
    for(string v in vals) {
        list += "<li>" + replace(v, rootFolder + seperator, "") + "</li>\n";
    }
    list += "</ol><br/>";
    list += "For more information about the change see <a href=\"https://anovaapps.atlassian.net/wiki/spaces/PSJ/pages/1138294803/Breaking+Changes+for+Power+Scripts\">this page</a> in the documentation.<br/><br/>";
    
    runnerLog(list, true);
}

//make nulls output pretty
if(size(nulls) > 0) {
    string list = "<strong>Nulls used as keywords in script: [" + trim(size(nulls)) + "]:</strong>\n<ol>\n";
    for(string n in nulls) {
        list += "<li>" + replace(n, rootFolder + seperator, "") + "</li>\n";
    }
    list += "</ol><br/>";
    list += "For more information about the change see <a href=\"https://anovaapps.atlassian.net/wiki/spaces/PSJ/pages/1138294803/Breaking+Changes+for+Power+Scripts\">this page</a> in the documentation.";
    
    runnerLog(list, true);
}