W08D04

ER diagram

UML diagram

The packages used

1- npm i express (To build a backend server)

2- npm i cors (The benefit in it when using Front End)

3- npm i dotenv (To hide some sensitive things)

4- npm i jsonwebtoken (It contains 3 items and can only be changed on paylad)

5- npm i mongoose (To create the database)

6- npm i bcrypt (Password encryption)

7- npm i nodmone (globe)

models-role

const mongoose = require("mongoose");

const role = new mongoose.Schema({ role: { type: String }, permossion: { type: Array }, });

module.exports = mongoose.model("Role", role);

models-like

const mongoose = require("mongoose");

const role = new mongoose.Schema({ like: { type: Boolean, default: false }, user: { type: mongoose.Schema.Types.ObjectId, ref: "User" }, });

module.exports = mongoose.model("Like", role);

models-post

const mongoose = require("mongoose");

const post = new mongoose.Schema({ img: { type: String }, desc: { type: String, required: true }, time: {type: Date}, isDelet: { type: Boolean, default: false }, isLik: { type: mongoose.Schema.Types.ObjectId, ref: "Like" }, user: { type: mongoose.Schema.Types.ObjectId, ref: "User" }, comments: { type: mongoose.Schema.Types.ObjectId, ref: "Comment" }, }, {timestamps: true} );

module.exports = mongoose.model("Post", post);

models-comment

const mongoose = require("mongoose");

const comment = new mongoose.Schema({ comment: { type: String, required: true }, isDeleted: { type: Boolean, default: false }, user: { type: mongoose.Schema.Types.ObjectId, ref: "User" }, }, {timestamps: true} );

module.exports = mongoose.model("Comment", comment);

models-user

const mongoose = require("mongoose");

const user = new mongoose.Schema({ username: { type: String, required: true }, email: { type: String, required: true, unique: true }, password: { type: String, require: true }, img: { type: String }, isDelet: { type: Boolean, default: false }, role: [{ type: mongoose.Schema.Types.ObjectId, ref: "Role" }], });

module.exports = mongoose.model("User", user);

models-index

const mongoose = require("mongoose");

const dotenv = require("dotenv"); dotenv.config();

const DB = process.env.DB;

const options = { useNewUrlParser: true, useUnifiedTopology: true, };

mongoose.connect(DB, options).then( () => { console.log("DB Ready To Use"); }, (err) => { console.log(err); } );

routers-controllers-role

const rolemodel = require("../../db/models/role");

const newrolr = (req, res) => { const { role, permossion } = req.body;

const newrolr = new rolemodel({ role, permossion, }); newrolr .save() .then((result) => { res.json(result); }) .catch((err) => { res.status(err); }); };

const getrole = (req, res) => { rolemodel .find({}) .then((result) => { res.json(result); }) .catch((err) => { res.json(err); }); };

module.exports = { newrolr, getrole };

routers-controllers-like

const likeModel = require("../../db/models/like");

// Toggle like const newLike = (req, res) => { const { userId, postId } = req.params; try { likeModel .findOneAndDelete({ $and: [{ post: postId }, { user: userId }] }) .then((item) => { if (item) { res.status(200).send("like deleted"); } else { const newLike = new likeModel({ user: userId, post: postId, }); newLike .save() .then((result) => { res.status(200).json(result); }) .catch((err) => { res.status(400).send(err); }); } }); } catch (error) { res.status(400).send(error); } };

module.exports = { newLike };

routers-controllers-post

const postmodel = require("../../db/models/post");

const newPost = (req, res) => { const { img, desc } = req.body; const { _id } = req.params; try { const newPost = new postmodel({ img, desc, time: Date(), user: _id, }); newPost .save() .then((result) => { res.status(200).json(result); }) .catch((err) => { res.status(400).send(err); }); } catch (error) { res.status(400).send(error); } };

// soft delete post const softDel = (req, res) => { const { _id } = req.params; try { postmodel.findOne({ _id: _id }).then((item) => { if (item.user == req.token._id) { postmodel.findById({ _id: _id }).then((item) => { if (item.isDel == false) { postmodel .findByIdAndUpdate( { _id: _id }, { $set: { isDel: true } }, { new: true } ) .then((result) => { res.status(200).json(result); }) .catch((err) => { res.status(400).json(err); }); } else { postmodel .findByIdAndUpdate( { _id: _id }, { $set: { isDel: false } }, { new: true } ) .then((result) => { res.status(200).json(result); }) .catch((err) => { res.status(400).json(err); }); } }); } else if (req.token.role == "61a734cd947e8eba47efbc68") { postmodel.findById({ _id: _id }).then((item) => { if (item.isDel == false) { postmodel .findByIdAndUpdate( { _id: _id }, { $set: { isDel: true } }, { new: true } ) .then((result) => { res.status(200).json(result); }) .catch((err) => { res.status(400).json(err); }); } else { postmodel .findByIdAndUpdate( { _id: _id }, { $set: { isDel: false } }, { new: true } ) .then((result) => { res.status(200).json(result); }) .catch((err) => { res.status(400).json(err); }); } }); } else { res.status(403).send("Forbidden"); } }); } catch (error) { res.status(400).json(error); } };

// epdate post const updatePost = (req, res) => { const { _id } = req.params; const { desc } = req.body; try { postmodel.findOne({ _id: _id }).then((item) => { // console.log("Update token ", req.token); if (item.user == req.token._id) { postmodel .findOneAndUpdate( { _id: _id }, { $set: { desc: desc, time: Date() } }, { new: true } ) .then((result) => { res.status(200).json(result); }); } else if (req.token.role == "61a734cd947e8eba47efbc68") { postmodel .findOneAndUpdate( { _id: _id }, { $set: { desc: desc, time: Date() } }, { new: true } ) .then((result) => { res.status(200).json(result); }); } else { res.status(403).send("forbbiden"); } }); } catch (error) { res.status(400).json(error); } };

// get post all const geAllPost = (req, res) => { try { postmodel.find({ isDel: false }).then((result) => { res.status(200).json(result); }); } catch (error) { res.status(400).json(error); } };

// get post by id const getPost = (req, res) => { const { _id } = req.params; try { postmodel.findOne({ _id: _id }).then((result) => { if (result.isDel == false) { res.status(200).json(result); } else { res.status(404).send("Post deleted"); } }); } catch (error) { res.status(400).json(error); } };

module.exports = { newPost, softDel, updatePost, geAllPost, getPost };

routers-controllers-comment

const commentModel = require("../../db/models/comment"); const postModel = require("../../db/models/post"); const likeModel = require("../../db/models/like");

const newComment = (req, res) => { const { desc } = req.body; const { userId, postId } = req.params; try { const newComment = new commentModel({ desc, time: Date(), user: userId, post: postId, }); newComment .save() .then((result) => { res.status(200).json(result); }) .catch((err) => { res.status(400).send(err); }); } catch (error) { res.status(400).send(error); } };

const deleteCommet = (req, res) => { const { _id } = req.params; try { commentModel.findOne({ _id: _id }).then((item) => { if (item) { if (item.user == req.token._id) { commentModel .findOneAndDelete({ _id: _id }) .then((result) => { if (result) { res.status(200).json(result); } else { res.status(404).send("Not found"); } }) .catch((err) => { res.status(400).json(err); }); } else if (req.token.role == "61a734cd947e8eba47efbc68") { commentModel .findOneAndDelete({ _id: _id }) .then((result) => { if (result) { res.status(200).json(result); } else { res.status(404).send("Not found"); } }) .catch((err) => { res.status(400).json(err); }); } else { res.status(403).send("Forbidden"); } } else { res.status(404).send("Not found"); } }); } catch (error) { res.status(400).json(error); } };

const updateComment = (req, res) => { const { _id } = req.params; const { desc } = req.body; try { commentModel.findOne({ _id: _id }).then((item) => { console.log(req.token); if (item.user == req.token._id) { commentModel .findOneAndUpdate( { _id: _id }, { $set: { desc: desc, time: Date() } }, { new: true } ) .then((result) => { if (result) { res.status(200).json(result); } else { res.status(404).send("Comment not found"); } }); } else if (req.token.role == "61a734cd947e8eba47efbc68") { commentModel .findOneAndUpdate( { _id: _id }, { $set: { desc: desc, time: Date() } }, { new: true } ) .then((result) => { if (result) { res.status(200).json(result); } else { res.status(404).send("Comment not found"); } }); } else { res.status(404).send("Forbidden"); } }); } catch (error) { res.status(404).json(error); } };

const getComment = (req, res) => { const { _id } = req.params; try { commentModel.findOne({ _id: _id }).then((result) => { if (result) { res.status(200).json(result); } else { res.status(404).send("Comment deleted"); } }); } catch (error) { res.status(400).json(error); } };

const getPostWithComments = (req, res) => { const { _id } = req.params; try { let test = []; postModel.findOne({ _id: _id }).then((item) => { if (item.isDel == false) { test.push(item); commentModel.find({ post: _id }).then((result) => { test.push(result); likeModel.find({ post: _id }).then((ele) => { test.push(ele);

        res.status(200).json(test);
      });
    });
  } else {
    res.status(404).json("Post is deleted");
  }
});

} catch (error) { res.status(400).json(error); } };

module.exports = { newComment, deleteCommet, updateComment, getComment, getPostWithComments, };

routers-controllers-user

routers-routes-role

routers-routes-like

routers-routes-post

routers-routes-comment

routers-routes-user

index