import * as angular from "angular";

export class DocumentService {
    static $inject = ['dateFilter'];

    constructor(private dateFilter: any) {
    }

    public parseResponseDates(response: any) {
        this.parseDates(response);
        return response;
    }
    
    public formatRequestDates(request: any, hasTime?: any) {
        let result: any = angular.copy(request);
        this.formatDates(result, hasTime);
        return angular.toJson(result);
    } 

    private formatDate(date: Date): string {
        return this.dateFilter(date, 'yyyy-MM-dd');
    }
    
    private formatDateTime(date: Date): string {
        return this.dateFilter(date, 'yyyy-MM-ddTHH:mm:ss');
    }    
    
    private formatDates(input: any, hasTime?: any) {
        for (let key in input) {
            if (!input.hasOwnProperty(key)) continue;

            if (angular.isDate(input[key])) {
                let date: Date = input[key];
            	if (hasTime && hasTime[key]) {
            		input[key] = this.formatDateTime(date);
            	} else {
            		input[key] = this.formatDate(date);
            	}
            } else if (typeof input[key] === "object") {
                this.formatDates(input[key], hasTime);
            }
        }
    }    
    
    private parseDates(input: any) {
        for (let key in input) {
            if (!input.hasOwnProperty(key)) continue;

            if (typeof input[key] === "object") {
                this.parseDates(input[key]);
            } else {
                let match = /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}.*$/.exec(input[key]);
                if (typeof input[key] === "string" && match) {
                    input[key] = new Date(input[key]);
                }
                match = /^\d{4}-\d{2}-\d{2}$/.exec(input[key]);
                if (typeof input[key] === "string" && match) {
                	let date = new Date(input[key]);
                	date.setHours(0);
                    input[key] = date;
                }
            }
        }
    } 
}