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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2022 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.
 */

#include "webdav.h"

static WebdavBackend pg_webdav_backend = {
    pg_dav_propfind_init,
    pg_dav_propfind_do,
    pg_dav_propfind_finish,
    pg_dav_proppatch_do,
    pg_dav_proppatch_finish,
    NULL, // opt_mkcol
    NULL, // opt_mkcol_finish
    NULL, // opt_delete
    NULL, // opt_delete_finish
    0,
    NULL,
    NULL
};

WebdavBackend* pg_webdav_create(Session *sn, Request *rq, pblock *pb) {
    // resourcepool is required
    char *resource_pool = pblock_findval("resourcepool", pb);
    if(!resource_pool) {
        log_ereport(LOG_MISCONFIG, "pg_webdav_create: missing resourcepool parameter");
        return NULL;
    }
    
    // get the resource first (should only fail in case of misconfig)
    ResourceData *resdata = resourcepool_lookup(sn, rq, resource_pool, 0);
    if(!resdata) {
        log_ereport(LOG_MISCONFIG, "postgresql webdav: resource pool %s not found", resource_pool);
        return NULL;
    }
    
    return pg_webdav_create_from_resdata(sn, rq, resdata);
}

WebdavBackend* pg_webdav_create_from_resdata(Session *sn, Request *rq, ResourceData *resdata) {
    WebdavBackend *webdav = pool_malloc(sn->pool, sizeof(WebdavBackend));
    if(!webdav) {
        return NULL;
    }
    *webdav = pg_webdav_backend;
    
    PgWebdavBackend *instance = pool_malloc(sn->pool, sizeof(PgWebdavBackend));
    if(instance) {
        pool_free(sn->pool, webdav);
        return NULL;
    }
    webdav->instance = instance;
    
    instance->pg_resource = resdata;
    instance->connection = resdata->data;
    
    return webdav;
}

WebdavBackend* pg_webdav_prop_create(Session *sn, Request *rq, pblock *pb) {
    return NULL;
}


int pg_dav_propfind_init(
        WebdavPropfindRequest *rq,
        const char *path,
        WebdavPList **outplist)
{
    PgPropfind *pg = pool_malloc(rq->sn->pool, sizeof(PgPropfind));
    rq->userdata = pg;
    
    return 1;
}

int pg_dav_propfind_do(
	WebdavPropfindRequest *rq,
	WebdavResponse *response,
	VFS_DIR parent,
	WebdavResource *resource,
	struct stat *s)
{
    return 1;
}

int pg_dav_propfind_finish(WebdavPropfindRequest *rq) {
    return 1;
}

int pg_dav_proppatch_do(
	WebdavProppatchRequest *request,
	WebdavResource *response,
	VFSFile *file,
	WebdavPList **out_set,
	WebdavPList **out_remove)
{
    return 1;
}

int pg_dav_proppatch_finish(
	WebdavProppatchRequest *request,
	WebdavResource *response,
	VFSFile *file,
	WSBool commit)
{
    return 1;
}