var SavableData = require("./SavableData");
var global = require('./global')
var E = require("./Errors");
var fs = require("fs");
var Resource = require("./Resource");
var utils = require('./utils');

module.exports = class Project extends SavableData {
  constructor()
  {
    super();
    this.stages = [];
    this.map = "";
    this.name = "";
    this.exclude = ["basePath"];
    this.location = null;
    this.basePath = "";
    this.user=null;
    this.resources = {}
  }


  load(user, name)
  {
    this.name=name;
    this.basePath = global.pathToProjectDir(user, name);
    this.path = global.pathToProjectFile(user, name);

    try {
      var obj = JSON.parse(fs.readFileSync(this.path));
      if(obj!=null) Object.assign(this, obj);
    } catch (e) {
      return E.ENOENT;
    }

    return this;
  }

  getResource(user, project, resName)
  {
    var res = new Resource();
    return  res.load(user, project, resName);
  }


  createResource(user, project, res)
  {
    var old = this.getResource(user, project, res);
    if(E.check(old))
      return E.PROJECT_EXISTS;

    var p = new Resource();
    p.name=res;
    p.save(global.pathToResourceFile(user, project, res));
    this.resources[res] = true;

    this.save();
    return E.SUCCESS;
  }

  renameResource(user, project, oldName, newName)
  {

    var n = this.getResource(user, project, oldName);
    n.name=newName;

    var dir = global.pathToResourceDir(user, project);
    var oldPath = global.pathToResourceFile(user, project, oldName);
    var newPath = global.pathToResourceFile(user, project, newName);
    try {
      utils.mv(oldPath, newPath);
      if(this.location!=null)
      {
        var oldResPath=this.location.path;
        this.location.path=dir+newName+this.location.ext;
        utils.mv(oldResPath, this.location.path);
      }
    } catch (e) {
      console.log(e);
      return E.UNKNWON;
    }

    delete this.resources[oldName];

    this.resources[newName] = true;


    n.save(newPath);
    this.save(global.pathToProjectFile(user, project));

    return E.SUCCESS;
  }

  removeResource(user, project, res)
  {
    var x = this.getResource(user, project, res);
    if(!E.check(x))
      return E.BAD_RES;

    delete this.resources[res];
    utils.rm(global.pathToResourceFile(user, project, res));
    if(this.location!=null)
      utils.rm(this.location.path);
    this.save(global.pathToProjectFile(user, project));
    return E.SUCCESS;
  }

  editResource(user, project, name, data)
  {
    if(data.name!=undefined && data.name!=name)
    {
      var t = this.renameResource(user, project, name, data.name);
      if( !E.check(t) )
        return t;
      name=data.name;
    }

    var res = this.getResource(user, project, name);
    if(!E.check(res))
      return res;

    Object.assign(res, data);

    res.save(global.pathToResourceFile(user, project, name));
    return E.SUCCESS;
  }





}