/*
    ListPost.js
    Author: tobychui

    This script list all the post within the system

*/

//Require the file library
requirelib("filelib");

//Require the internal library for handling the path of blog posting
includes("config.js");

var blogPostStorage = getBlogPostStore();

function extractPostInfo(filepath){
    var content = filelib.readFile(filepath);
    var postObject = JSON.parse(content);

    var title = "Untitled";
    var content = "(This post has no content)";
    var tags = [];

    if (typeof postObject.Title != "undefined"){
        title = postObject.Title
    }

    if (typeof postObject.Content != "undefined"){
        content = postObject.Content;
        if (content.split(" ").length > 100){
            //Trim the content off if it is longer than 100 words
            var words = content.split(" ");
            var trimmedContent = "";
            for (var i = 0; i < 100; i++){
                trimmedContent = trimmedContent + words[i] + " ";
            }

            trimmedContent = trimmedContent + "..."
            content = trimmedContent;
        }else if (content.length > 300){
            //To handle lang with no space, like Cantonese
            var trimmedContent = content.substr(0, 300) + "..."
            content = trimmedContent;
        }
    }

    if (typeof postObject.Tags != "undefined"){
        tags = postObject.Tags
    }

    return [title, content, tags];
}

function main(){
    //Filter out the last / if exists
    if (blogPostStorage.substr(blogPostStorage.length - 1, 1) == "/"){
        blogPostStorage = blogPostStorage.substr(0, blogPostStorage.length - 1);
    }

    //If it doesn't exists
    filelib.mkdir(blogPostStorage + "/public");
    filelib.mkdir(blogPostStorage + "/private");

    //List all the created post
    var publicPosts = filelib.aglob(blogPostStorage + "/public/*.json","reverse");
    var privatePosts = filelib.aglob(blogPostStorage + "/private/*.json","reverse");



    var posts = [];
    for(var i = 0; i < publicPosts.length; i++){
        //Extract post information
        var postInfo = extractPostInfo( publicPosts[i]);

        //Get the poost modification time
        var modTime = filelib.mtime(publicPosts[i], false);

        posts.push({
            "title": postInfo[0],
            "content":postInfo[1],
            "tags": postInfo[2],
            "modtime": modTime,
            "view": "public",
            "filepath": publicPosts[i]
        });
    }

    for(var i = 0; i < privatePosts.length; i++){
        var postInfo = extractPostInfo( privatePosts[i]);

        //Get the poost modification time
        var modTime = filelib.mtime(privatePosts[i], false);

        posts.push({
            "title": postInfo[0],
            "content":postInfo[1],
            "tags": postInfo[2],
            "modtime": modTime,
            "view": "private",
            "filepath": privatePosts[i]
        });
    }

    //Return the value of the posts
    sendJSONResp(JSON.stringify(posts));
}

main();