recipe.js

const express = require("express"); 
const router = express.Router();
const mongoose = require('mongoose');
const requireLogin=require("../middleware/requireLogin");
const Recipe=mongoose.model("Recipe");


//for all recipes 
router.get("/allrecipe",requireLogin,(req,res)=>{
    Recipe.find()                         //finding all posts  without any condition
    .populate("postedBy","_id name pic")
    .populate("comments.postedBy","_id name pic")  //   showing _id and name in postedBy
    .sort('-createdAt')
    .then(recipes=>{
        res.json({recipes:recipes})   
    })
    .catch(err=>{
        console.log(err)
    })
})

router.get('/getsubrecipe',requireLogin,(req,res)=>{         // getsubpost -->> getting all recipe of all the person whose followed by me

    // if postedBy in following
    Recipe.find({postedBy:{$in:req.user.following}})           // {postedBy:{$in:req.user.following}}-->>> here we quering one by one  posetdBy of each post ( of Post db ) in following array of user if it is present  then we will return 
    .populate("postedBy","_id name pic")
    .populate("comments.postedBy","_id name pic")
    .sort('-createdAt')
    .then(recipes=>{
        res.json({recipes})
    })
    .catch(err=>{
        console.log(err)
    })
})
// getting all  North indian  recipe
router.get('/getnorth',requireLogin,(req,res)=>{         
    Recipe.find({ category:1})          
    .populate("postedBy","_id name pic")
    .populate("comments.postedBy","_id name pic")
    .sort('-createdAt')
    .then(recipes=>{
        res.json({recipes})
    })
    .catch(err=>{
        console.log(err)
    })
})

// getting all south indian recipe
router.get('/getsouth',requireLogin,(req,res)=>{         
    Recipe.find({ category:2})          
    .populate("postedBy","_id name pic")
    .populate("comments.postedBy","_id name pic")
    .sort('-createdAt')
    .then(recipes=>{
        res.json({recipes})
    })
    .catch(err=>{
        console.log(err)
    })
})

// getting all  Chinese indian  recipe
router.get('/getchinese',requireLogin,(req,res)=>{         
    Recipe.find({ category:3})          
    .populate("postedBy","_id name pic")
    .populate("comments.postedBy","_id name pic")
    .sort('-createdAt')
    .then(recipes=>{
        res.json({recipes})
    })
    .catch(err=>{
        console.log(err)
    })
})
// getting all  Continental indian  recipe
router.get('/getcontinental',requireLogin,(req,res)=>{         
    Recipe.find({ category:4})          
    .populate("postedBy","_id name pic")
    .populate("comments.postedBy","_id name pic")
    .sort('-createdAt')
    .then(recipes=>{
        res.json({recipes})
    })
    .catch(err=>{
        console.log(err)
    })
})
//Create new recipe 
router.post("/createrecipe",requireLogin,(req,res)=>{
    const {title,body,pic,type}=req.body;
    if(!title || !body || !pic || !type )
    {
        return res.status(422).json({error :"Please add all the fields"});
    }
      req.user.password=undefined    // to remove the password from post
     
    const recipe=new Recipe({
        title,
        body,
        photo:pic,
        category:type,
        postedBy:req.user
    })
    recipe.save().then(result=>{
        res.json({recipe:result})
    })
    .catch(err=>{
        console.log(err)
    });
   
});

//  my uploaded recieps
router.get("/myrecipe",requireLogin,(req,res)=>{  
    Recipe.find({postedBy: req.user._id})  
    .populate("postedBy","_id name pic")  //it will expand only _id and name
    .then(myrecipe=>{
        res.json({myrecipe})
    })
    .catch(err=>{
        console.log(err)
    })
})

router.put('/like',requireLogin,(req,res)=>{
      Recipe.findByIdAndUpdate(req.body.postId,{
        $push:{likes:req.user._id}
      },{
        new :true
      })
      .populate("comments.postedBy","_id name pic")
      .populate("postedBy","_id name pic")
      .exec((err,result)=>{
        if(err){
            return res.status(422).json({error:err})
        }else{
            res.json(result)
        }
      })
})
router.put('/unlike',requireLogin,(req,res)=>{
      Recipe.findByIdAndUpdate(req.body.postId,{
        $pull:{likes:req.user._id}
      },{
        new :true
      })
      .populate("comments.postedBy","_id name pic")
      .populate("postedBy","_id name pic")
      .exec((err,result)=>{
        if(err){
            return res.status(422).json({error:err})
        }else{
            res.json(result)
        }
      })
})
router.put("/comment",requireLogin,(req,res)=>{
    const comment={
     text:req.body.text,
     postedBy:req.user._id
    }
    Recipe.findByIdAndUpdate(req.body.postId,{
         $push:{comments:comment}
     },{
         new:true
     })
     .populate("comments.postedBy","_id name pic")
     .populate("postedBy","_id name pic")
     .exec((err,result)=>{
         if(err){
             return res.status(422).json({error:err})
         }else{
             res.json(result)
         }
     })
 })
 
 router.delete('/deletepost/:postId',requireLogin,(req,res)=>{
    Recipe.findOne({_id:req.params.postId})
    .populate("postedBy","_id")
    .exec((err,post)=>{
        if(err || !post){
            return res.status(422).json({error:err})
        }
        if(post.postedBy._id.toString() === req.user._id.toString()){
              post.remove()
              .then(result=>{
                  res.json(result)
              }).catch(err=>{
                  console.log(err)
              })
        }
    })
})

router.delete('/deletecomment/:postId/:commentId', requireLogin, (req, res) => {
    Recipe.findById(req.params.postId)
    //   .populate("postedBy","_id name")
      .populate("comments.postedBy","_id name pic")
      .exec((err,recipe)=>{
          if(err || !recipe){
            return res.status(422).json({message:"Some error occured!!"});
          }
          const comment = recipe.comments.find((comment)=>
            comment._id.toString() === req.params.commentId.toString()
            );
            if (comment.postedBy._id.toString() === req.user._id.toString()) {
                const removeIndex = recipe.comments
                    .map(comment => comment._id.toString())
                    .indexOf(req.params.commentId);
                recipe.comments.splice(removeIndex, 1);
                    recipe.save()
                .then(result=>{
                    res.json(result)
                }).catch(err=>console.log(err));
            }
            // if (comment.postedBy._id.toString() === req.user._id.toString()) {
            //     const removeIndex = recipe.comments
            //     .map(comment => comment.postedBy._id.toString())     /// this code for removing all comments of user which post the comment
            //     .indexOf(req.user._id);
            //     recipe.comments.splice(removeIndex, 1);
            //     recipe.save()
            //     .then(result=>{
            //         res.json(result)
            //     }).catch(err=>console.log(err));
            // }
      })
  });  


module.exports=router;