import ngModule from '../module';

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

        this.warehouses = [];
        this.niches = [];
        this.removedNiches = [];
        this.oldNiches = {};
    }

    $onInit() {
        this.getNiches();
        this.getWarehouses();
    }

    _setIconAdd() {
        if (this.niches.length) {
            this.niches.map(element => {
                element.showAddIcon = false;
                return true;
            });
            this.niches[this.niches.length - 1].showAddIcon = true;
        } else {
            this.addNiche();
        }
    }

    _setDirtyForm() {
        if (this.$scope.form) {
            this.$scope.form.$setDirty();
        }
    }

    _unsetDirtyForm() {
        if (this.$scope.form) {
            this.$scope.form.$setPristine();
        }
    }

    addNiche() {
        this.niches.push({code: null, itemFk: this.params.id, showAddIcon: true});
        this._setIconAdd();
    }

    removeNiche(index) {
        let item = this.niches[index];
        if (item) {
            this.niches.splice(index, 1);
            this._setIconAdd();
            if (item.id) {
                this.removedNiches.push(item.id);
                this._setDirtyForm();
            }
        }
    }

    _equalNiches(oldNiche, newNiche) {
        return oldNiche.id === newNiche.id && oldNiche.code === newNiche.code && oldNiche.warehouseFk === newNiche.warehouseFk;
    }

    setOldNiches(response) {
        this._setIconAdd();
        response.data.forEach(niche => {
            this.oldNiches[niche.id] = Object.assign({}, niche);
        });
    }

    getNiches() {
        let filter = {
            where: {itemFk: this.params.id},
            include: {relation: 'warehouse'}
        };

        this.$http.get(`/item/api/ItemNiches?filter=${JSON.stringify(filter)}`).then(response => {
            this.niches = response.data;
            this.setOldNiches(response);
        });
    }

    getWarehouse(id, warehouses) {
        return warehouses.find(warehouse => warehouse.id === id);
    }

    getWarehouses() {
        this.$http.get(`/item/api/Warehouses`).then(response => {
            this.warehouses = response.data;
        });
    }

    submit() {
        let warehousesDefined = [];
        let repeatedWarehouse = false;
        let canSubmit;
        let nichesObj = {
            delete: this.removedNiches,
            create: [],
            update: []
        };

        this.niches.forEach(niche => {
            let isNewNiche = !niche.id;

            if (warehousesDefined.indexOf(niche.warehouseFk) !== -1) {
                repeatedWarehouse = true;
                return;
            }
            warehousesDefined.push(niche.warehouseFk);

            if (isNewNiche) {
                nichesObj.create.push(niche);
            }

            if (!isNewNiche && !this._equalNiches(this.oldNiches[niche.id], niche)) {
                nichesObj.update.push(niche);
            }
        });

        if (this.$scope.form.$invalid) {
            return this.vnApp.showError(this.$translate.instant('Some fields are invalid'));
        }

        if (repeatedWarehouse) {
            return this.vnApp.showError(this.$translate.instant('The niche must be unique'));
        }

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

        if (canSubmit) {
            return this.$http.post(`/item/api/ItemNiches/crudItemNiches`, nichesObj).then(() => {
                this.getNiches();
                this._unsetDirtyForm();
                this.$scope.watcher.notifySaved();
            });
        }
        this.vnApp.showError(this.$translate.instant('No changes to save'));
    }
}

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

ngModule.component('vnItemNiche', {
    template: require('./index.html'),
    controller: Controller
});