window.singleRecipeObj = {
    display: function(recipe){
        clearScreen();
        document.querySelector("#singleRecipeAction").style.display = "flex";

        let tbody = document.querySelector("#singleRecipeAction tbody");

        while(tbody.children.length > 0){
            tbody.removeChild(tbody.firstChild);
        }

        document.querySelector("#recipeName").innerText = recipe.name;
        document.querySelector("#addButton").onclick = ()=>{this.displayAdd(recipe)};

        for(let ingredient of recipe.ingredients){
            let row = document.createElement("tr");
            tbody.appendChild(row);

            let name = document.createElement("td");
            name.innerText = ingredient.ingredient.name;
            name.classList = "truncateLong";
            row.appendChild(name);

            let quantity = document.createElement("td");
            quantity.innerText = `${ingredient.quantity} ${ingredient.ingredient.unit}`;
            row.appendChild(quantity);

            let actions = document.createElement("td");
            row.appendChild(actions);

            let editButton = document.createElement("button");
            editButton.innerText = "Edit";
            editButton.classList = "button-small";
            editButton.onclick = ()=>{this.editIngredient(row, ingredient, recipe);};
            actions.appendChild(editButton);

            let removeButton = document.createElement("button");
            removeButton.innerText = "Remove";
            removeButton.classList = "button-small";
            removeButton.onclick = ()=>{this.deleteIngredient(recipe._id, ingredient.ingredient._id, ingredient.quantity, row);};
            actions.appendChild(removeButton);
        }
    },

    displayAdd: function(recipe){
        let tbody = document.querySelector("#singleRecipeAction tbody");

        let row = document.createElement("tr");
        tbody.appendChild(row);

        let nameTd = document.createElement("td");
        row.appendChild(nameTd);

        let name = document.createElement("select");
        name.classList = "truncateLong";
        nameTd.appendChild(name);

        for(let item of merchant.inventory){
            let exists = false;
            for(let recipeIngredient of recipe.ingredients){
                if(item.ingredient._id === recipeIngredient.ingredient._id){
                    exists = true;
                    break;
                }
            }

            if(!exists){
                let nameOption = document.createElement("option");
                nameOption.innerText = `${item.ingredient.name} (${item.ingredient.unit})`;
                nameOption.value = item.ingredient._id;
                name.appendChild(nameOption);
            }
        }

        let quantityTd = document.createElement("td");
        row.appendChild(quantityTd);

        let quantity = document.createElement("input");
        quantity.type = "text";
        quantity.step = "0.01";
        quantity.onkeypress = (event)=>{if(event.keyCode===13) this.addIngredient(recipe, name.value, quantity.value, row)};
        quantityTd.appendChild(quantity);

        let actionTd = document.createElement("td");
        row.appendChild(actionTd);

        let saveButton = document.createElement("button");
        saveButton.innerText = "Save";
        saveButton.classList = "button-small";
        saveButton.onclick = ()=>{this.addIngredient(recipe, name.value, quantity.value, row);};
        actionTd.appendChild(saveButton);

        let cancelButton = document.createElement("button");
        cancelButton.innerText = "Cancel";
        cancelButton.classList = "button-small";
        cancelButton.onclick = ()=>{tbody.removeChild(row)};
        actionTd.appendChild(cancelButton);
    },

    addIngredient: function(recipe, ingredientId, quantity, row){
        let item = {
            ingredient: ingredientId,
            quantity: quantity
        }
        
        if(validator.ingredient.quantity(item.quantity)){
            axios.post("/merchant/recipes/ingredients/create", {recipeId: recipe._id, item: item})
                .then((response)=>{
                    if(typeof(response.data) === "string"){
                        banner.createError(response.data);
                    }else{
                        for(let i = 0; i < merchant.recipes.length; i++){
                            if(merchant.recipes[i]._id === recipe._id){
                                merchant.recipes.splice(i, 1);
                                break;
                            }
                        }
                        merchant.recipes.push(response.data);
                        recipesObj.isPopulated = false;

                        while(row.children.length > 0){
                            row.removeChild(row.firstChild);
                        }

                        let addIngredient = response.data.ingredients.find(i => i.ingredient._id === ingredientId);

                        let name = document.createElement("td");
                        name.innerText = addIngredient.ingredient.name;
                        row.appendChild(name);

                        let quantity = document.createElement("td");
                        quantity.innerText = `${item.quantity} ${addIngredient.ingredient.unit}`;
                        row.appendChild(quantity);

                        let actions = document.createElement("td");
                        row.appendChild(actions);

                        let editButton = document.createElement("button");
                        editButton.innerText = "Edit";
                        editButton.classList = "button-small";
                        editButton.onclick = ()=>{this.editIngredient(row, addIngredient, recipe);};
                        actions.appendChild(editButton);

                        let removeButton = document.createElement("button");
                        removeButton.innerText = "Remove";
                        removeButton.classList = "button-small";
                        removeButton.onclick = ()=>{this.deleteIngredient(recipe._id, ingredientId, quantity, row);};
                        actions.appendChild(removeButton);
                    }
                })
                .catch((err)=>{
                    row.parentNode.removeChild(row);
                    banner.createError("There was an error and the recipe could not be updated");
                });
        }
    },

    //Delete ingredient from table
    //Delete ingredient from database
    deleteIngredient: function(recipeId, ingredientId, quantity, row){
        axios.post("/merchant/recipes/ingredients/remove", {ingredientId: ingredientId, recipeId: recipeId, quantity: quantity})
            .then((result)=>{
                if(typeof(result.data) === "string"){
                    banner.createError(result.data);
                }else{
                    row.parentNode.removeChild(row);

                    let updateRecipe = merchant.recipes.find(r => r._id === recipeId);
                    for(let i = 0; i < updateRecipe.ingredients.length; i++){
                        if(updateRecipe.ingredients[i].ingredient._id === ingredientId){
                            updateRecipe.ingredients.splice(i, 1);
                            break;
                        }
                    }

                    recipesObj.isPopulated = false;
                }
            })
            .catch((err)=>{
                banner.createError("There was an error and the ingredient could not be removed from the recipe");
            });
    },

    //Change quantity field to input
    //Change edit button
    editIngredient: function(row, ingredient, recipe){
        let td = row.children[1];
        td.innerText = "";

        let input = document.createElement("input");
        input.type = "number";
        input.step = "0.01";
        input.value = ingredient.quantity;
        input.onkeypress = (event)=>{if(event.keyCode===13) this.updateIngredient(row, ingredient, recipe)};
        td.appendChild(input);

        let para = document.createElement("p");
        para.innerText = ingredient.ingredient.unit;
        td.appendChild(para);

        let editButton = row.children[2].children[0];
        editButton.innerText = "Save";
        editButton.onclick = ()=>{this.updateIngredient(row, ingredient, recipe);};

        let removeButton = row.children[2].children[1];
        removeButton.innerText = "Cancel";
        removeButton.onclick = ()=>{this.cancelEdit(row, ingredient, recipe)};

        input.focus();
    },

    cancelEdit: function(row, ingredient, recipe){
        let quantity = row.children[1];
        quantity.removeChild(quantity.firstChild);
        quantity.innerText = `${ingredient.quantity} ${ingredient.ingredient.unit}`;

        let saveButton = row.children[2].children[0];
        saveButton.innerText = "Edit";
        saveButton.onclick = ()=>{this.editIngredient(row, ingredient, recipe)};

        let cancelButton = row.children[2].children[1];
        cancelButton.innerText = "Remove";
        cancelButton.onclick = ()=>{this.deleteIngredient(recipe._id, ingredient.ingredient._id, row)};
    },

    updateIngredient: function(row, ingredient, recipe){
        let originalQuantity = ingredient.quantity;
        ingredient.quantity = row.children[1].children[0].value;

        let td = row.children[1];
        while(td.children.length > 0){
            td.removeChild(td.firstChild);
        }

        let saveButton = row.children[2].children[0];
        saveButton.innerText = "Edit";
        saveButton.onclick = ()=>{this.editIngredient(row, ingredient, recipe);};

        let cancelButton = row.children[2].children[1];
        cancelButton.innerText = "Remove";
        cancelButton.onclick = ()=>{this.deleteIngredient(recipe._id, ingredient.ingredient._id, row)};

        if(validator.ingredient.quantity(ingredient.quantity)){
            axios.post("/merchant/recipes/ingredients/update", {recipeId: recipe._id, ingredient: ingredient})
                .then((result)=>{
                    if(typeof(result.data) === "string"){
                        td.innerText = `${originalQuantity} ${ingredient.ingredient.unit}`;
                        banner.createError(result.data);
                    }else{
                        td.innerText = `${ingredient.quantity} ${ingredient.ingredient.unit}`;
                        banner.createNotification("Ingredient successfully updated");
                    }
                })
                .catch((err)=>{
                    td.innerText = `${originalQuantity} ${ingredient.ingredient.unit}`;
                    banner.createError("There was an error and the ingredient could not be updated");
                });
        }else{
            td.innerText = `${originalQuantity} ${ingredient.ingredient.unit}`;
        }
    },
}