var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
import ApplicationComponent from "../ApplicationComponent";
export default class FormHelperComponent extends ApplicationComponent {
    start(app, router) {
        return __awaiter(this, void 0, void 0, function* () {
            router.use((req, res, next) => {
                if (!req.session) {
                    throw new Error('Session is unavailable.');
                }
                res.locals.query = req.query;
                let _validation = null;
                res.locals.validation = () => {
                    if (!_validation) {
                        const v = req.flash('validation');
                        _validation = v.length > 0 ? v[0] : null;
                    }
                    return _validation;
                };
                let _previousFormData = null;
                res.locals.previousFormData = () => {
                    if (!_previousFormData) {
                        const v = req.flash('previousFormData');
                        _previousFormData = v.length > 0 ? v[0] : null;
                    }
                    return _previousFormData;
                };
                next();
            });
            router.use((req, res, next) => {
                if (['GET', 'POST'].find(m => m === req.method)) {
                    if (typeof req.body === 'object') {
                        req.flash('previousFormData', req.body);
                    }
                }
                next();
            });
        });
    }
    stop() {
        return __awaiter(this, void 0, void 0, function* () {
        });
    }
}
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