/*
    Index Manager

    This script handle adding and removing blog post from the index list.
    Use with include only. Call directly via AGI return nothing
*/

includes("helper.js");

//Get the current post in the system
function getIndexList(webroot){
    webroot = filepathClean(webroot);
    var indexFile = webroot + "/blog/posts.json"
    if (!filelib.fileExists(indexFile)){
        //Create it
        filelib.writeFile(indexFile, JSON.stringify([]));
        //Return an empty list
        return [];
    }else{
        //Get the index file
        var content = filelib.readFile(indexFile);
        return JSON.parse(content);
    }
}

//Write new index list into the list
function writeIndexList(webroot, newListObject){
    webroot = filepathClean(webroot);
    var indexFile = webroot + "/blog/posts.json"
    return filelib.writeFile(indexFile, JSON.stringify(newListObject));
}

//This inject a new title into the post list
function injectTitleIntoPostList(webroot, postObjectName){
    var currentIndexList = getIndexList(webroot);
    var postObjectPath = filepathClean(getBlogPostStore()) + "/posts/" + postObjectName + ".json";
    var summary = extractPostInfo(postObjectPath);

    var newIndexList = [];
    for (var i = 0; i < currentIndexList.length; i++){
        if (currentIndexList[i].name != postObjectName){
            //Only push index list that is not this one
            newIndexList.push(currentIndexList[i]);
        }
    }

    currentIndexList = newIndexList;

    //Push to the list
    currentIndexList.push({
        name: postObjectName, 
        summary: summary
    });
    writeIndexList(webroot,currentIndexList);
    
}

//This remove a post from the post list base on title
function removeTitleFromPostList(webroot, postObjectName){
    var currentIndexList = getIndexList(webroot);
    var postExists = false;

    for (var i = 0; i < currentIndexList.length; i++){
        if (currentIndexList[i].name == postObjectName){
            postExists = true;
        }
    }

    if (postExists){
        var newarray = [];
        for (var i = 0; i < currentIndexList.length; i++){
            var thisIndex = currentIndexList[i];
            if (thisIndex.name != postObjectName){
                newarray.push(thisIndex);
            }
        }
        writeIndexList(webroot, newarray);
    }
}