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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2011 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef WEBDAV_H
#define	WEBDAV_H

#include "../public/nsapi.h"

#include <sys/file.h>
#include <sys/stat.h>

#include "../ucx/map.h"
#include "../ucx/dlist.h"
#include "../util/strbuf.h"

#ifdef	__cplusplus
extern "C" {
#endif

#define DAV_FOREACH(elem, list) \
        for (UcxDlist *elem = list ; elem != NULL ; elem = elem->next)
    
typedef struct PropfindResponse     PropfindResponse;
typedef struct DAVPropertyBackend   DAVPropertyBackend;

typedef struct PropfindRequest      PropfindRequest;
typedef struct DavProperty          DavProperty;

struct PropfindRequest {
    Session            *sn;
    Request            *rq;

    UcxDlist           *properties; /* DavProperty list, requested props */
    int8_t             allprop;
    int8_t             propname;
    
    int8_t             prop;
    UcxDlist           *notFoundProps;
    UcxDlist           *forbiddenProps;
    DAVPropertyBackend *propertyBackend;

    char               *path;
    char               *uri;

    sbuf_t             *out;
};

struct DavProperty {
    char *xmlns;
    char *name;
};

/*
 * dav_res_propfind_f
 * 
 * Gets all requested properties of a WebDAV resource(file). This function
 * should add properties with dav_propfind_add_str_prop or
 * dav_prop_add_xml_prop. Unavailable properties should be added with
 * 
 * 
 * arg0: property backend
 * arg1: current PropfindRequest object
 * arg2: the webdav resource path
 */
typedef void(*dav_res_propfind_f)(DAVPropertyBackend*,PropfindRequest*,char*);

struct DAVPropertyBackend {
    dav_res_propfind_f propfind;
};

int webdav_service(pblock *pb, Session *sn, Request *rq);
int webdav_put(pblock *pb, Session *sn, Request *rq);
int webdav_propfind(pblock *pb, Session *sn, Request *rq);

void dav_resource_response(PropfindRequest *rq, sstr_t path, sstr_t uri);

/*
 * dav_propfind_add_str_prop
 * 
 * Adds a string property to the current WebDAV resource response
 */
void dav_propfind_add_str_prop(
        PropfindRequest *rq,
        DavProperty* prop,
        char *str,
        size_t len);

//void dav_propfind_add_xml_prop();

/*
 * dav_propfind_add_prop_error
 * 
 * Adds a unavailable property to the response
 * 
 * rq:    propfind request object
 * prop:  unavailable property
 * error: HTTP status code
 */
void dav_propfind_add_prop_error(
        PropfindRequest *rq,
        DavProperty *prop,
        int error);



DAVPropertyBackend* create_property_backend();
void dav_rq_propfind(DAVPropertyBackend *b,PropfindRequest *rq ,char *path);

#ifdef	__cplusplus
}
#endif

#endif	/* WEBDAV_H */