import ngModule from '../module';

export default class Controller {
    constructor($state, $scope, $http, $q, $translate, vnApp) {
        this.$state = $state;
        this.$scope = $scope;
        this.$http = $http;
        this.$q = $q;
        this.$translate = $translate;
        this.vnApp = vnApp;

        this.barcodes = [];
        this.removedBarcodes = [];
        this.oldBarcodes = {};
    }
    _setIconAdd() {
        if (this.barcodes.length) {
            this.barcodes.map(element => {
                element.showAddIcon = false;
                return true;
            });
            this.barcodes[this.barcodes.length - 1].showAddIcon = true;
        } else {
            this.addBarcode();
        }
    }

    _setDirtyForm() {
        if (this.$scope.form) {
            this.$scope.form.$setDirty();
        }
    }
    _unsetDirtyForm() {
        if (this.$scope.form) {
            this.$scope.form.$setPristine();
        }
    }
    _equalBarcodes(oldBarcode, newBarcode) {
        return oldBarcode.id === newBarcode.id && oldBarcode.code === newBarcode.code;
    }

    addBarcode() {
        this.barcodes.push({code: null, itemFk: this.$state.params.id, showAddIcon: true});
        this._setIconAdd();
    }

    removeBarcode(index) {
        let item = this.barcodes[index];
        if (item) {
            this.barcodes.splice(index, 1);
            this._setIconAdd();
            if (item.id) {
                this.removedBarcodes.push(item.id);
                this._setDirtyForm();
            }
        }
    }

    submit() {
        let codes = [];
        let repeatedBarcodes = false;
        let canSubmit;
        let barcodesObj = {
            delete: this.removedBarcodes,
            create: [],
            update: []
        };
        for (let i = 0; i < this.barcodes.length; i++) {
            let barcode = this.barcodes[i];
            let isNewBarcode = barcode.id === undefined;

            if (barcode.code && codes.indexOf(barcode.code) !== -1) {
                repeatedBarcodes = true;
                break;
            }
            if (barcode.code) codes.push(barcode.code);

            if (isNewBarcode && barcode.code) {
                barcodesObj.create.push(barcode);
            } else if (!isNewBarcode && !this._equalBarcodes(this.oldBarcodes[barcode.id], barcode)) {
                barcodesObj.update.push(barcode);
            }
        }

        if (repeatedBarcodes) {
            return this.vnApp.showMessage(this.$translate.instant('The barcode must be unique'));
        }

        canSubmit = barcodesObj.update.length > 0 || barcodesObj.create.length > 0 || barcodesObj.delete.length > 0;

        if (canSubmit) {
            return this.$http.post(`/item/api/ItemBarcodes/crudItemBarcodes`, barcodesObj).then(() => {
                this.getBarcodes();
                this._unsetDirtyForm();
            });
        }
        this.vnApp.showMessage(this.$translate.instant('No changes to save'));
    }

    setOldBarcodes(response) {
        this._setIconAdd();
        response.data.forEach(barcode => {
            this.oldBarcodes[barcode.id] = Object.assign({}, barcode);
        });
    }

    getBarcodes() {
        let filter = {
            where: {itemFk: this.$state.params.id}
        };
        this.$http.get(`/item/api/ItemBarcodes?filter=${JSON.stringify(filter)}`).then(response => {
            this.barcodes = response.data;
            this.setOldBarcodes(response);
        });
    }

    $onInit() {
        this.getBarcodes();
    }
}

Controller.$inject = ['$state', '$scope', '$http', '$q', '$translate', 'vnApp'];

ngModule.component('vnItemBarcode', {
    template: require('./item-barcode.html'),
    controller: Controller
});