import ngModule from '../module';

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

        this.ticketObservations = [];
        this.oldObservations = {};
        this.removedObservations = [];
    }

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

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

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

    addObservation() {
        this.ticketObservations.push({description: null, ticketFk: this.params.id, showAddIcon: true});
        this._setIconAdd();
    }

    removeObservation(index) {
        let item = this.ticketObservations[index];
        if (item) {
            this.ticketObservations.splice(index, 1);
            this._setIconAdd();
            if (item.id) {
                this.removedObservations.push(item.id);
                this._setDirtyForm();
            }
        }
    }

    _equalObservations(oldObservation, newObservation) {
        return oldObservation.id === newObservation.id && oldObservation.observationTypeFk === newObservation.observationTypeFk && oldObservation.description === newObservation.description;
    }

    setOldObservations(response) {
        this._setIconAdd();
        response.data.forEach(observation => {
            this.oldObservations[observation.id] = Object.assign({}, observation);
        });
    }

    getObservations() {
        let filter = {
            where: {ticketFk: this.params.id},
            include: ['observationType']
        };

        this.$http.get(`/ticket/api/TicketObservations?filter=${JSON.stringify(filter)}`).then(response => {
            this.ticketObservations = response.data;
            this.setOldObservations(response);
        });
    }

    submit() {
        let typesDefined = [];
        let repeatedType = false;
        let canSubmit;
        let observationsObj = {
            delete: this.removedObservations,
            create: [],
            update: []
        };

        this.ticketObservations.forEach(observation => {
            let isNewObservation = !observation.id;

            delete observation.showAddIcon;

            if (typesDefined.indexOf(observation.observationTypeFk) !== -1) {
                repeatedType = true;
                return;
            }
            typesDefined.push(observation.observationTypeFk);

            if (isNewObservation && observation.description && observation.observationTypeFk) {
                observationsObj.create.push(observation);
            }

            if (!isNewObservation && !this._equalObservations(this.oldObservations[observation.id], observation)) {
                observationsObj.update.push(observation);
            }
        });

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

        if (repeatedType) {
            return this.vnApp.showMessage(this.$translate.instant('The observation type must be unique'));
        }

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

        if (canSubmit) {
            return this.$http.post(`/ticket/api/TicketObservations/crudTicketObservation`, observationsObj).then(() => {
                this.getObservations();
                this._unsetDirtyForm();
            });
        }
        this.vnApp.showMessage(this.$translate.instant('No changes to save'));
    }

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

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

ngModule.component('vnTicketObservation', {
    template: require('./ticket-observation.html'),
    controller: Controller,
    bindings: {
        ticket: '<'
    }
});