module.exports = {
    isPopulated: false,
    recipeDivList: [],

    display: function(Recipe){
        if(!this.isPopulated){
            this.populateRecipes();

            if(merchant.pos !== "none"){
                document.getElementById("posUpdateRecipe").onclick = ()=>{this.posUpdate(Recipe)};
            }
            document.getElementById("recipeSearch").oninput = ()=>{this.search()};
            document.getElementById("recipeClearButton").onclick = ()=>{this.clearSorting()};

            this.isPopulated = true;
        }
    },

    populateRecipes: function(){
        let recipeList = document.getElementById("recipeList");
        let template = document.getElementById("recipe").content.children[0];

        this.recipeDivList = [];
        while(recipeList.children.length > 0){
            recipeList.removeChild(recipeList.firstChild);
        }

        for(let i = 0; i < merchant.recipes.length; i++){
            let recipeDiv = template.cloneNode(true);
            recipeDiv.onclick = ()=>{controller.openSidebar("recipeDetails", merchant.recipes[i])};
            recipeDiv._name = merchant.recipes[i].name;
            recipeList.appendChild(recipeDiv);

            recipeDiv.children[0].innerText = merchant.recipes[i].name;
            recipeDiv.children[1].innerText = `$${(merchant.recipes[i].price / 100).toFixed(2)}`;

            this.recipeDivList.push(recipeDiv);
        }
    },

    search: function(){
        let input = document.getElementById("recipeSearch").value.toLowerCase();
        let recipeList = document.getElementById("recipeList");
        let clearButton = document.getElementById("recipeClearButton");

        let matchingRecipes = [];
        for(let i = 0; i < this.recipeDivList.length; i++){
            if(this.recipeDivList[i]._name.toLowerCase().includes(input)){
                matchingRecipes.push(this.recipeDivList[i]);
            }
        }

        while(recipeList.children.length > 0){
            recipeList.removeChild(recipeList.firstChild);
        }
        for(let i = 0; i < matchingRecipes.length; i++){
            recipeList.appendChild(matchingRecipes[i]);
        }

        if(input === ""){
            clearButton.style.display = "none";
        }else{
            clearButton.style.display = "inline";
        }
    },

    clearSorting: function(){
        document.getElementById("recipeSearch").value = "";
        this.search();
    },

    posUpdate: function(Recipe){
        let loader = document.getElementById("loaderContainer");
        loader.style.display = "flex";
        let url = `/recipe/update/${merchant.pos}`;

        fetch(url, {
            method: "GET",
            headers: {
                "Content-Type": "application/json;charset=utf-8"
            },
        })
            .then(response => response.json())
            .then((response)=>{
                console.log(response);
                let newRecipes = [];
                for(let i = 0; i < response.new.length; i++){
                    newRecipes.push(new Recipe(
                        response.new[i]._id,
                        response.new[i].name,
                        response.new[i].price,
                        merchant,
                        []
                    ));
                }
                if(newRecipes.length > 0){
                    merchant.editRecipes(newRecipes);
                }

                let removeRecipes = [];
                for(let i = 0; i < response.removed.length; i++){
                    for(let j = 0; j < merchant.recipes.length; j++){
                        if(response.removed[i]._id === merchant.recipes[j].id){
                            removeRecipes.push(merchant.recipes[j], true);
                            break;
                        }
                    }
                }
                if(removeRecipes.length > 0){
                    merchant.editRecipes(removeRecipes, true);
                }
            })
            .catch((err)=>{
                console.log(err);
                banner.createError("SOMETHING WENT WRONG.  PLEASE REFRESH THE PAGE");
            })
            .finally(()=>{
                loader.style.display = "none";
            });
    }
}