<template>

    <div class="basketActions">

        <template v-if="directToBasket">

            <form :action="url" method="post" v-if="product.in_stock" class="basketForm" ref="productForm">


                <div class="row">

                    <product-size-select
                            :sizes="product.sizes"
                            @change="updateSize"
                            @sizechanged="sizeChanged"
                            :selected-size-id="resolvedSizeId"
                            select-label="Options"
                            :single-select="singleSizeSelect"
                            :strength-tooltip="strengthTooltip"
                    ></product-size-select>

                </div> <!-- .row -->



				<!-- Subscriptions Start -->

				<div class="row subscriptionsRow" v-if="subscriptionEnabled">

					<div class="subscriptionOptions">

						<div class="subscriptionOptions__item" v-if="priceSet && !subscriptionRequired">

							<div class="subscriptionOptions__itemLabel" v-if="subscriptionEnabled">
								One time purchase
							</div><!-- .subscriptionOptions__itemLabel -->

							<div class="subscriptionOptions__itemSelect">

								<input
									type="radio"
									name="purchase_type"
									value="buy"
									v-model="purchase.type"
									:id="'buy' + formID"
								/>

								<label
									class="priceWrapper"
									:class="[subscriptionEnabled ? '' : 'hideRadio']"
									:for="'buy' + formID"
								>

									<span class="subscriptionOptions__priceWrapper">

										<multi-currency-price :price="currentPrice"/>

										<multi-currency-price
											:price="currentWasPrice"
											v-if="currentWasPrice > 0"
											:strike="true"
										/>

										<multi-currency-price
											:price="pricePerTablet"
											v-if="pricePerTablet > 0"
											:postfix="' / ' + pillTYpe"
										/>

									</span> <!-- .mainPrice -->

								</label> <!-- .priceWrap -->

							</div><!-- .subscriptionOptions__itemSelect -->

						</div><!-- .subscriptionOptions__item -->

						<div class="subscriptionOptions__item" v-if="subscriptionEnabled && subscriptionDisplayText">

							<div class="subscriptionOptions__itemLabel" v-text="subscriptionDisplayText"></div>

							<div class="subscriptionOptions__itemSelect">

								<input
									type="radio"
									name="purchase_type"
									value="subscription"
									v-model="purchase.type"
									:id="'subscription' + formID"
								/>

								<label
									class="priceWrapper"
									:for="'subscription' + formID"
								>

									<template v-if="subscriptionPrice">

										<span class="subscriptionOptions__priceWrapper">

											<multi-currency-price :price="subscriptionPrice" postfix="p/m"/>

											<multi-currency-price
												:price="subscriptionWasPrice"
												v-if="subscriptionWasPrice > 0"
												postfix="p/m"
												:strike="true"
											/>

										</span>



									</template>

									<template v-else>

										<multi-currency-price
											:price="priceSet"
											:product="product"
											:default-size-selected-id="defaultSizeSelectedId"
										/>

										<multi-currency-price
											:price="wasPriceSet"
											v-if="wasPriceSet > 0"
											:strike="true"
											:product="product"
											:default-size-selected-id="defaultSizeSelectedId"
										/>


									</template>


								</label> <!-- .priceWrapper -->


							</div>

						</div><!-- .subscriptionOptions__item -->

					</div> <!-- .subscriptionOptions -->

					<input
						type="hidden"
						name="subscription_period"
						:value="subscriptionPeriodValue"
						v-if="purchase.type === 'subscription'"
					/>

				</div><!-- .subscriptionsRow -->

				<!-- Subscriptions End -->


                <div class="row" v-else>

                    <div class="priceWrapper" v-if="currentPrice">

                        <multi-currency-price :price="currentPrice"/>

                        <multi-currency-price
                                :price="currentWasPrice"
                                v-if="currentWasPrice > 0"
                                :strike="true"
                        />

                        <multi-currency-price
                                :price="pricePerTablet"
                                v-if="pricePerTablet > 0"
                                :postfix="' / ' + pillTYpe"
                        />

                    </div> <!-- .priceWrap -->

                </div> <!-- .row -->

                <div class="row basketButtonRow">

                    <div v-show="showQuantitySelect" :class="[showQuantitySelect ? 'rowInput' : 'rowHidden']">

                        <mtc-number-input
                                :min="1"
                                :max="99"
                                :value="1"
                                :name="'quantity'"
                                @input="updateQty"
                                :input-type="showQuantitySelect ? 'number' : 'hidden'"
                        ></mtc-number-input>


                    </div> <!-- .rowInput -->

                    <div class="rowButton">

                        <input type="hidden" name="id" v-model="product.id">
                        <input type="hidden" name="add-bag" value="true">

                        <input
                                type="hidden"
                                name="assessment_ids[]"
                                :value="aID"
                                v-for="aID in assessmentIDs"
                        />

                        <button
                                :type="ajaxAddToBasket ? 'button' : 'submit'"
                                class="button addToBagButton"
                                v-html="label"
                                @click.prevent="addToBasketAjax($event)"
                                v-if="!basketButtonData.pharmacy_item"
                        ></button>

                        <a
                                :href="url"
                                v-else
                                v-html="label"
                                class="button addToBagButton"
                        ></a>

                    </div> <!-- .rowButton -->

                </div> <!-- .row basketButtonRow -->

                <div class="ajaxLoader coverCard" :class="[loading ? 'isVisible' : '']" v-if="ajaxAddToBasket">

                    <loading-spinner
                            :loading="loading"
                            :show-loading-text="false"
                    ></loading-spinner>

                </div> <!-- .ajaxLoading -->

                <div class="ajaxMessage coverCard" :class="[msg.text.length ? 'isVisible' : '']" v-if="ajaxAddToBasket">

                    <div class="ajaxMessageWrap">
                        <p :class="[msg.class]" v-html="msg.text"></p>
                    </div> <!-- .ajaxMessageWrap -->

                </div> <!-- .ajaxMessage -->


            </form>

        </template>

        <template v-else>

            <div class="buttonGrid">


                <div class="buttonItem" v-if="product.in_stock">

                    <a
                            :href="url"
                            v-html="label"
                            class="button addToBagButton"
                            :class="[largeButton ? 'buttonAlt buttonLarge withArrow' : '']"
                    ></a>

                </div> <!-- .buttonItem -->

                <div class="buttonItem"  v-if="!largeButton">
                    <a
                            :href="product.url"
                            v-html="'Learn more'"
                            class="button buttonOutlined"
                    ></a>
                </div> <!-- .buttonItem -->

            </div> <!-- .buttonGrid -->

        </template>

        <template v-if="!product.in_stock">

            <a
                    class="button addToBagButton noStock"
                    :href="product.url"
            >
                Out of Stock
            </a>

        </template>

    </div> <!-- .basketActions -->

</template>

<script>

import { isUndefined } from 'lodash';
import axios from 'axios';
import productSizeSelect from './product_size_select';
import MtcNumberInput from '../../../mtc_number_input'

export default {

    name: 'add-to-basket',

    components: {
        productSizeSelect,
        MtcNumberInput
    },

    props: {

        largeButton: {
            type: [Boolean],
            default (rawProps) {
                return false;
            }
        },
        showPrice: {
            type: [Boolean],
            default (rawProps) {
                return false;
            }
        },
        priceSet: {
            type: [Boolean, Number],
            default (rawProps) {
                return false;
            }
        },
		wasPriceSet: {
			type: [Boolean, Number],
			default (rawProps) {
				return 0;
			}
		},
        ajaxAddToBasket: {
            type: [Boolean],
            default (rawProps) {
                return false;
            }
        },
        basketUrl: {
            type: [String],
            default (rawProps) {
                return '/shop/addtobasket.php';
            }
        },
        product: {
            type: [Object, Array, Boolean],
            default (rawProps) {
                return false;
            }
        },
        browsePage: {
            type: [Boolean],
            default (rawProps) {
                return false;
            }
        },
        basketButtonData: {
            type: [Object, Array, Boolean],
            default (rawProps) {
                return false;
            }
        },
        defaultSizeSelectedId: {
            type: [String, Number, Boolean],
            default (rawProps) {
                return false;
            }
        },
        singleSizeSelect: {
            type: [Boolean],
            default (rawProps) {
                return true;
            }
        }
    },

    data() {
        return {
			formID: '',
            url: '',
            defaultURL: '/shop/addtobasket.php',
            label: 'Add to basket',
            directToBasket: true,
            quantity: 1,
            selectedSize: 0,
            resolvedSizeId: 0,
            loading: false,
            msg: {
                class: 'errorMsg',
                text: ''
            },
			showPricePerTablet: false,
			purchase: {
				type: 'buy'
			}
        }
    },

    created() {

		// Set unique component id (_uid is a Vue 2 internal property, not part of the public API)
		this.formID = this._uid;

        this.url = this.basketUrl;

        this.directToBasket = this.basketButtonData.add_direct_to_basket;

        if(this.directToBasket) {

            this.label = typeof this.basketButtonData.browse_label !== 'undefined' ?
                this.basketButtonData.browse_label :
                this.basketButtonData.label;

            this.url = this.basketButtonData.browse_url;


        }else{
            this.label = this.basketButtonData.label;
            this.url = this.basketButtonData.url;
        }

		// Override default size from ?size= URL param if present
		const sizeFromURL = this.getSizeFromURL();
		const sizeExistsInProduct = sizeFromURL !== false
			&& this.product?.sizes?.some(s => s.id == sizeFromURL);
		if (sizeExistsInProduct) {
			this.selectedSize = sizeFromURL;
			this.resolvedSizeId = sizeFromURL;
		} else if (this.defaultSizeSelectedId !== false) {
			this.selectedSize = this.defaultSizeSelectedId;
			this.resolvedSizeId = this.defaultSizeSelectedId;
		}

		// Set the default subscription and purchase objects
		this.setSubscription();

    },

    mounted() {


        //Update pharmacy item url based on size selected
        if(this.basketButtonData.pharmacy_item) {

            //Update urls
            const rQty = /q\=[0-9]{1,20}/i;
            this.url = this.url.replace(rQty, 'q=' + this.quantity);

            if(this.url.search(/s\=[0-9]{1,20}/i) < 0) {
                this.url += '&s=0';
            }

            const rSize = /s\=[0-9]{1,20}/i;
            this.url = this.url.replace(rSize, 's=' + this.selectedSize);

        }

    },

    computed: {

        assessmentIDs() {

            const assessments = this.$store.state.createdAssessments;
            const assessmentIDs = [];

            for(let key in assessments) {
                if(typeof assessments[key].id != 'undefined') {
                    assessmentIDs.push(assessments[key].id);
                }
            }

            return assessmentIDs;

        },

        showQuantitySelect() {

            const excludeForTypes = ['doctor', 'pharmacy'];

            if(excludeForTypes.indexOf(this.product.product_type) < 0) {

                return true

            }

            return false;

        },

        strengthTooltip() {

            if(this.product.custom?.strength_tooltip?.length) {
                return this.product.custom.strength_tooltip;
            }

            return false;
        },

        pricePerTablet() {

			if(!this.showPricePerTablet) return;

            try {
                const sizeSelected = this.product.sizes.filter(size => size.id == this.selectedSize);
                return parseFloat(sizeSelected[0].price_per_pill);
            }catch(e) {

            }

            return 0;

        },

        pillTYpe() {
            if (
                typeof this.product.custom.pill_type !== 'undefined' &&
                this.product.custom.pill_type.length
            ) {
              return this.product.custom.pill_type
            }
            return 'Tablet';
        },

		//Subscriptions
		subscriptionPeriodValue () {

			if(!this.product?.sizes?.length) return 0;

			let sizeSelected = this.product.sizes.filter(size => size.id == this.selectedSize);

			if (sizeSelected.length) {
				sizeSelected = sizeSelected[0];

				if (typeof sizeSelected.subscription_preference != 'undefined' &&
					sizeSelected.subscription_preference != null) {

					return parseInt(sizeSelected.subscription_preference.interval_multiplier);
				}
			}

			return 0;
		},

		subscriptionDisplayText() {

			if(!this.product?.sizes?.length) return false;

			let sizeSelected = this.product.sizes.filter(size => size.id == this.selectedSize);

			if (sizeSelected.length) {

				sizeSelected = sizeSelected[0];

				if (typeof sizeSelected.subscription_preference != 'undefined' &&
					sizeSelected.subscription_preference != null) {

					const period = this.subscriptionPeriodValue;
					const interval = sizeSelected.subscription_preference.interval;

					// Handle common subscription patterns with natural language
					if (interval === 'weeks') {
						if (period === 1) return 'Weekly Subscription';
						if (period === 2) return 'Fortnightly Subscription';
						if (period === 4) return 'Monthly Subscription (Every 4 Weeks)';
						return 'Subscription (Every ' + period + ' Weeks)';
					}

					if (interval === 'months') {
						if (period === 1) return 'Monthly Subscription';
						if (period === 2) return 'Bi-Monthly Subscription';
						if (period === 3) return 'Quarterly Subscription';
						if (period === 6) return 'Twice Yearly Subscription';
						if (period === 12) return 'Annual Subscription';
						return 'Subscription (Every ' + period + ' Months)';
					}

					if (interval === 'days') {
						if (period === 1) return 'Daily Subscription';
						if (period === 7) return 'Weekly Subscription (Every 7 Days)';
						if (period === 14) return 'Fortnightly Subscription (Every 14 Days)';
						if (period === 30) return 'Monthly Subscription (Every 30 Days)';
						return 'Subscription (Every ' + period + ' Days)';
					}

					// Fallback to original format for any other cases
					let formattedInterval = interval.split(' ').map(word => word.charAt(0).toUpperCase() + word.slice(1)).join(' ');
					return 'Subscription (Every ' + period + ' ' + formattedInterval + ')';
				}
			}

			return false;

		},

		subscriptionRequired () {

			if(!this.product?.sizes?.length) return false;

			let sizeSelected = this.product.sizes.filter(size => size.id == this.selectedSize);

			if (sizeSelected.length) {
				sizeSelected = sizeSelected[0];

				if (typeof sizeSelected.subscription_preference != 'undefined' &&
					sizeSelected.subscription_preference != null) {

					if (sizeSelected.subscription_preference?.is_required) {
						return sizeSelected.subscription_preference.is_required;
					}
				}
			}

			return false;
		},

		subscriptionEnabled () {

			if(!this.product?.sizes?.length) return false;

			let sizeSelected = this.product.sizes.filter(size => size.id == this.selectedSize);

			if (sizeSelected.length) {
				sizeSelected = sizeSelected[0];

				if (typeof sizeSelected.subscription_preference != 'undefined' &&
					sizeSelected.subscription_preference != null) {

					if (sizeSelected.subscription_preference?.is_allowed) {
						return sizeSelected.subscription_preference.is_allowed;
					}
				}
			}

			return false;
		},

		subscriptionPrice () {

			if(!this.product?.sizes?.length) return 0;

			let sizeSelected = this.product.sizes.filter(size => size.id == this.selectedSize);

			if (sizeSelected.length) {
				sizeSelected = sizeSelected[0];

				if (typeof sizeSelected.subscription_preference != 'undefined' &&
					sizeSelected.subscription_preference != null) {

					// The subscription price is always the main price (already discounted)
					return sizeSelected.subscription_preference.price.toFixed(2);
				}
			}

			return 0;
		},

		subscriptionWasPrice () {

			let sizeSelected = this.product.sizes.filter(size => size.id == this.selectedSize);

			if (sizeSelected.length) {
				sizeSelected = sizeSelected[0];

				if (typeof sizeSelected.subscription_preference != 'undefined' &&
					sizeSelected.subscription_preference != null) {

					let price = sizeSelected.subscription_preference.price;
					let salePrice = sizeSelected.subscription_preference.sale_price;

					// Show sale_price as "was" price if it's higher than the current price
					if (salePrice > price && salePrice > 0) {
						return salePrice.toFixed(2);
					}
				}
			}

			return 0;
		},

		subscriptionPricePerTablet () {
			let sizeSelected = this.product.sizes.filter(size => size.id == this.selectedSize);

			if (sizeSelected.length) {
				sizeSelected = sizeSelected[0];

				if (typeof sizeSelected.subscription_preference != 'undefined' &&
					sizeSelected.subscription_preference != null) {

					let price = sizeSelected.subscription_preference.price_per_pill;

					return price.toFixed(2);
				}
			}

			return 0;
		},

		// One-time purchase prices that respect sale prices
		currentPrice() {
			if (!this.product?.sizes?.length) {
				return this.priceSet;
			}

			let sizeSelected = this.product.sizes.find(size => size.id == this.selectedSize);

			if (sizeSelected) {
				// Use actual_price if available (computed by backend)
				if (sizeSelected.actual_price) {
					return parseFloat(sizeSelected.actual_price).toFixed(2);
				}
				// Check if there's a sale price
				if (sizeSelected.sale_price && sizeSelected.sale_price > 0 && sizeSelected.sale_price < sizeSelected.price) {
					return parseFloat(sizeSelected.sale_price).toFixed(2);
				}
				// Otherwise return regular price
				if (sizeSelected.price) {
					return parseFloat(sizeSelected.price).toFixed(2);
				}
			}

			return this.priceSet;
		},

		currentWasPrice() {
			if (!this.product?.sizes?.length) {
				return this.wasPriceSet;
			}

			let sizeSelected = this.product.sizes.find(size => size.id == this.selectedSize);

			if (sizeSelected) {
				// If there's a sale price, show original price as "was" price
				if (sizeSelected.sale_price && sizeSelected.sale_price > 0 && sizeSelected.sale_price < sizeSelected.price) {
					return parseFloat(sizeSelected.price).toFixed(2);
				}
			}

			return 0;
		},

    },

    methods: {


		//Subscriptions
		setSubscription (sizeID) {

			let sizeSelected = this.product.sizes.filter(size => size.id == this.selectedSize);

			let subscriptionEnabled = false;

			if (sizeSelected.length) {
				sizeSelected = sizeSelected[0];

				if (typeof sizeSelected.subscription_preference != 'undefined' &&
					sizeSelected.subscription_preference != null) {

					if (sizeSelected.subscription_preference?.is_allowed) {
						subscriptionEnabled = sizeSelected.subscription_preference.is_allowed;
					}
				}
			}

			if (subscriptionEnabled) {
				this.purchase.type = 'subscription';
			} else {
				this.purchase.type = 'buy';
			}

		},

        getSizeFromURL() {
            const searchParams = new URLSearchParams(window.location.search);

            if (searchParams.has('size')) {
                const sizeID = Number(searchParams.get('size'));

                if (!isNaN(sizeID) && sizeID > 0) {
                    return sizeID;
                }
            }

            return false;
        },

        updateSizeURL(sizeID) {
            const url = new URL(window.location);
            const currentSize = url.searchParams.get('size');

            if (!sizeID) {
                url.searchParams.delete('size');
            } else if (currentSize != sizeID) {
                url.searchParams.set('size', sizeID);
            } else {
                return;
            }

            window.history.pushState({}, '', url);
        },

        updateQty(qty) {
            this.quantity = Number(qty);

            //Update url
            const rQty = /q\=[0-9]{1,20}/i;
            this.url = this.url.replace(rQty, 'q=' + this.quantity);

        },

        updateSize(id) {

            this.selectedSize = id;

			//Update subscription
			this.setSubscription(id);

            if(this.url.search(/s\=[0-9]{1,20}/i) < 0) {
                this.url += '&s=0';
            }

            //Update url
            const rSize = /s\=[0-9]{1,20}/i;
            this.url = this.url.replace(rSize, 's=' + this.selectedSize);

            this.priceUpdatedBySize(id);
        },

        sizeChanged(sizeID) {
            const size = this.priceUpdatedBySize(sizeID, true);

            if(this.url.search(/s\=[0-9]{1,20}/i) < 0) {
                this.url += '&s=0';
            }
            //Update url
            const rSize = /s\=[0-9]{1,20}/i;
            this.url = this.url.replace(rSize, 's=' + size.id);

            if(size) {
                this.$emit('sizechanged', size);
                this.updateSizeURL(size.id);
            }
        },

        priceUpdatedBySize(id, returnSize) {

            if(returnSize === 'undefined') {
                returnSize = false;
            }

            let selectedSizeID = false;

            if(!isUndefined(id)) {

                const sizeID = parseInt(id);

                if(!isNaN(sizeID)) {
                    selectedSizeID = sizeID;
                }

            }

            if(!isUndefined(this.product?.sizes) && selectedSizeID) {

                const selectedSize = this.product.sizes.filter(size => {

                    if(size.id == selectedSizeID) {
                        return size;
                    }
                });

                if(selectedSize.length) {
                    if(returnSize) {
                        return selectedSize[0];
                    }else{
                        this.$emit('sizeupdated', selectedSize[0]);
                    }

                }
            }

            return false;

        },

        showMessage(text, success) {

            if(success) {
                this.msg.class = 'successMsg';
            }else{
                this.msg.class = 'errorMsg';
            }

            this.msg.text = text;


        },

        addToBasketAjax(event) {

            if(this.ajaxAddToBasket) {

                event.preventDefault();
                const vm = this;

                if(!vm.loading) {

                    vm.loading = true;

                    const form = this.$refs.productForm;
                    const form_data = new FormData(form);
                    form_data.set('ajax', 'true');

                    axios.post(this.url, form_data, {
                        headers: {
                            'Content-Type': 'application/x-www-form-urlencoded'
                        }
                    })
                    .then((response) => {

                        const data = response.data;

                        vm.loading = false;

                        if (data.status == 'ok') {

                            EventBus.$emit('receiveBasketUpdate');
                            vm.showMessage('Added to basket', true);

                        }else{
                            if(data.message) {
                                vm.showMessage(data.message, false);
                            }else {
                                vm.showMessage('Item could not be added to basket', false);
                            }
                        }

                    })
                    .finally(() => {
                        setTimeout(() => {
                            vm.showMessage('', false);
                        }, 4000);
                    });

                }


            }

        }

    }
}
</script>

<style lang="less">

    .basketActions {

        display: flex;
        flex-direction: column;
        justify-content: flex-end;

        .coverCard {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 2;
            background: rgba(255,255,255,0.8);
            backdrop-filter: blur(10px);
            display: flex;
            justify-content: center;
            align-items: center;
            overflow: hidden;
            border-radius: 35px;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: opacity 200ms linear, visibility 200ms linear;

            &.isVisible {
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
                transition: opacity 200ms linear, visibility 200ms linear;
            }

            &.ajaxMessage {

                z-index: 3;
                padding: 24px;


                p {
                    margin: 0;
                    font-weight: bold;

                    &.successMsg {
                        color: var(--primary_color);
                    }

                    &.errorMsg {
                        color: var(--alert_color);
                    }
                }

            }



        }

        .row {
            margin: 0;
            float: none;
            clear: both;
        }

        .addToBagButton {

            margin: 0;
            width: 100%;

            &.noStock {
                opacity: 0.5;
                background: var(--dark_color) !important;
                border-color: var(--dark_color) !important;
                color: #fff !important;
            }
        }

        .basketButtonRow {
            float: none;
            clear: both;
            margin: 0;
            display: flex;

            .rowInput {
                flex: 0 0 83px;
                display: flex;
                align-items: center;
                padding-right: 18px;

                & + .rowButton {
                    padding-left: 20px;
                }
            }

            .rowButton {
                flex: 1 1 100%;
                display: flex;
                align-items: center;
            }
        }

        .priceWrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 17px;


        }

		.row.subscriptionsRow {

			.subscriptionOptions {

				&__priceWrapper {
					display: flex;
					flex-wrap: wrap;
					gap: 12px;
					align-items: baseline;

					.multiPrice {

						& + .multiPrice {

							text-decoration: line-through;
							opacity: 0.8;
							font-size: 1.2em;

						}

					}
				}

				&__itemSelect {

					margin: 0 0 1em;

					input[type="radio"] {

						& + label {

							padding: 0 0 0 2em;

							&:before {

								top: 0.25em;
								width: 1.2em;
								height: 1.2em;

							}

							&:after {

								top: 0.25em;
								width: 1em;
								height: 1em;

							}

						}

					}
				}

			}

		}


    }




</style>
