/*
 * Copyright (c) 1995-2003, Index Data.
 * See the file LICENSE for details.
 *
 * $Id: ztest.c,v 1.58 2003/09/02 12:12:13 adam Exp $
 */

/*
 * Demonstration of simple server
 */

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>

#include <yaz/yaz-util.h>
#include <yaz/backend.h>
#include <yaz/ill.h>

Z_GenericRecord *dummy_grs_record (int num, ODR o);
char *dummy_marc_record (int num, ODR odr);
char *dummy_xml_record (int num, ODR odr);

int ztest_search (void *handle, bend_search_rr *rr);
int ztest_sort (void *handle, bend_sort_rr *rr);
int ztest_present (void *handle, bend_present_rr *rr);
int ztest_esrequest (void *handle, bend_esrequest_rr *rr);
int ztest_delete (void *handle, bend_delete_rr *rr);

int ztest_search (void *handle, bend_search_rr *rr)
{
    if (rr->num_bases != 1)
    {
        rr->errcode = 23;
        return 0;
    }
    if (yaz_matchstr (rr->basenames[0], "Default"))
    {
        rr->errcode = 109;
        rr->errstring = rr->basenames[0];
        return 0;
    }
    rr->hits = rand() % 24;
    return 0;
}


/* this huge function handles extended services */
int ztest_esrequest (void *handle, bend_esrequest_rr *rr)
{
    /* user-defined handle - created in bend_init */
    int *counter = (int*) handle;  

    yaz_log(LOG_LOG, "ESRequest no %d", *counter);

    (*counter)++;

    if (rr->esr->packageName)
    	yaz_log(LOG_LOG, "packagename: %s", rr->esr->packageName);
    yaz_log(LOG_LOG, "Waitaction: %d", *rr->esr->waitAction);


    yaz_log(LOG_LOG, "function: %d", *rr->esr->function);

    if (!rr->esr->taskSpecificParameters)
    {
        yaz_log (LOG_WARN, "No task specific parameters");
    }
    else if (rr->esr->taskSpecificParameters->which == Z_External_itemOrder)
    {
    	Z_ItemOrder *it = rr->esr->taskSpecificParameters->u.itemOrder;
	yaz_log (LOG_LOG, "Received ItemOrder");
        if (it->which == Z_IOItemOrder_esRequest)
	{
	    Z_IORequest *ir = it->u.esRequest;
	    Z_IOOriginPartToKeep *k = ir->toKeep;
	    Z_IOOriginPartNotToKeep *n = ir->notToKeep;
	    
	    if (k && k->contact)
	    {
	        if (k->contact->name)
		    yaz_log(LOG_LOG, "contact name %s", k->contact->name);
		if (k->contact->phone)
		    yaz_log(LOG_LOG, "contact phone %s", k->contact->phone);
		if (k->contact->email)
		    yaz_log(LOG_LOG, "contact email %s", k->contact->email);
	    }
	    if (k->addlBilling)
	    {
	        yaz_log(LOG_LOG, "Billing info (not shown)");
	    }
	    
	    if (n->resultSetItem)
	    {
	        yaz_log(LOG_LOG, "resultsetItem");
		yaz_log(LOG_LOG, "setId: %s", n->resultSetItem->resultSetId);
		yaz_log(LOG_LOG, "item: %d", *n->resultSetItem->item);
	    }
	    if (n->itemRequest)
	    {
		Z_External *r = (Z_External*) n->itemRequest;
		ILL_ItemRequest *item_req = 0;
		ILL_APDU *ill_apdu = 0;
		if (r->direct_reference)
		{
		    oident *ent = oid_getentbyoid(r->direct_reference);
		    if (ent)
			yaz_log(LOG_LOG, "OID %s", ent->desc);
                    if (ent && ent->value == VAL_TEXT_XML)
                    {
			yaz_log (LOG_LOG, "ILL XML request");
                        if (r->which == Z_External_octet)
                            yaz_log (LOG_LOG, "%.*s", r->u.octet_aligned->len,
                                     r->u.octet_aligned->buf); 
                    }
		    if (ent && ent->value == VAL_ISO_ILL_1)
		    {
			yaz_log (LOG_LOG, "Decode ItemRequest begin");
			if (r->which == ODR_EXTERNAL_single)
			{
			    odr_setbuf(rr->decode,
				       (char *) r->u.single_ASN1_type->buf,
				       r->u.single_ASN1_type->len, 0);
			    
			    if (!ill_ItemRequest (rr->decode, &item_req, 0, 0))
			    {
				yaz_log (LOG_LOG,
                                    "Couldn't decode ItemRequest %s near %d",
                                       odr_errmsg(odr_geterror(rr->decode)),
                                       odr_offset(rr->decode));
                            }
			    else
			        yaz_log(LOG_LOG, "Decode ItemRequest OK");
			    if (rr->print)
			    {
				ill_ItemRequest (rr->print, &item_req, 0,
                                    "ItemRequest");
				odr_reset (rr->print);
 			    }
			}
			if (!item_req && r->which == ODR_EXTERNAL_single)
			{
			    yaz_log (LOG_LOG, "Decode ILL APDU begin");
			    odr_setbuf(rr->decode,
				       (char*) r->u.single_ASN1_type->buf,
				       r->u.single_ASN1_type->len, 0);
			    
			    if (!ill_APDU (rr->decode, &ill_apdu, 0, 0))
			    {
				yaz_log (LOG_LOG,
                                    "Couldn't decode ILL APDU %s near %d",
                                       odr_errmsg(odr_geterror(rr->decode)),
                                       odr_offset(rr->decode));
                                yaz_log(LOG_LOG, "PDU dump:");
                                odr_dumpBER(yaz_log_file(),
                                     (char *) r->u.single_ASN1_type->buf,
                                     r->u.single_ASN1_type->len);
                            }
			    else
			        yaz_log(LOG_LOG, "Decode ILL APDU OK");
			    if (rr->print)
                            {
				ill_APDU (rr->print, &ill_apdu, 0,
                                    "ILL APDU");
				odr_reset (rr->print);
			    }
			}
		    }
		}
		if (item_req)
		{
		    yaz_log (LOG_LOG, "ILL protocol version = %d",
			     *item_req->protocol_version_num);
		}
	    }
            if (k)
            {

		Z_External *ext = (Z_External *)
                    odr_malloc (rr->stream, sizeof(*ext));
		Z_IUOriginPartToKeep *keep = (Z_IUOriginPartToKeep *)
                    odr_malloc (rr->stream, sizeof(*keep));
		Z_IOTargetPart *targetPart = (Z_IOTargetPart *)
		    odr_malloc (rr->stream, sizeof(*targetPart));

		rr->taskPackage = (Z_TaskPackage *)
                    odr_malloc (rr->stream, sizeof(*rr->taskPackage));
		rr->taskPackage->packageType =
		    odr_oiddup (rr->stream, rr->esr->packageType);
		rr->taskPackage->packageName = 0;
		rr->taskPackage->userId = 0;
		rr->taskPackage->retentionTime = 0;
		rr->taskPackage->permissions = 0;
		rr->taskPackage->description = 0;
		rr->taskPackage->targetReference = (Odr_oct *)
		    odr_malloc (rr->stream, sizeof(Odr_oct));
		rr->taskPackage->targetReference->buf =
		    (unsigned char *) odr_strdup (rr->stream, "911");
		rr->taskPackage->targetReference->len =
		    rr->taskPackage->targetReference->size =
		    strlen((char *) (rr->taskPackage->targetReference->buf));
		rr->taskPackage->creationDateTime = 0;
		rr->taskPackage->taskStatus = odr_intdup(rr->stream, 0);
		rr->taskPackage->packageDiagnostics = 0;
		rr->taskPackage->taskSpecificParameters = ext;

		ext->direct_reference =
		    odr_oiddup (rr->stream, rr->esr->packageType);
		ext->indirect_reference = 0;
		ext->descriptor = 0;
		ext->which = Z_External_itemOrder;
		ext->u.itemOrder = (Z_ItemOrder *)
		    odr_malloc (rr->stream, sizeof(*ext->u.update));
		ext->u.itemOrder->which = Z_IOItemOrder_taskPackage;
		ext->u.itemOrder->u.taskPackage =  (Z_IOTaskPackage *)
		    odr_malloc (rr->stream, sizeof(Z_IOTaskPackage));
		ext->u.itemOrder->u.taskPackage->originPart = k;
		ext->u.itemOrder->u.taskPackage->targetPart = targetPart;

                targetPart->itemRequest = 0;
                targetPart->statusOrErrorReport = 0;
                targetPart->auxiliaryStatus = 0;
            }
	}
    }
    else if (rr->esr->taskSpecificParameters->which == Z_External_update)
    {
    	Z_IUUpdate *up = rr->esr->taskSpecificParameters->u.update;
	yaz_log (LOG_LOG, "Received DB Update");
	if (up->which == Z_IUUpdate_esRequest)
	{
	    Z_IUUpdateEsRequest *esRequest = up->u.esRequest;
	    Z_IUOriginPartToKeep *toKeep = esRequest->toKeep;
	    Z_IUSuppliedRecords *notToKeep = esRequest->notToKeep;
	    
	    yaz_log (LOG_LOG, "action");
	    if (toKeep->action)
	    {
		switch (*toKeep->action)
		{
		case Z_IUOriginPartToKeep_recordInsert:
		    yaz_log (LOG_LOG, " recordInsert");
		    break;
		case Z_IUOriginPartToKeep_recordReplace:
		    yaz_log (LOG_LOG, " recordReplace");
		    break;
		case Z_IUOriginPartToKeep_recordDelete:
		    yaz_log (LOG_LOG, " recordDelete");
		    break;
		case Z_IUOriginPartToKeep_elementUpdate:
		    yaz_log (LOG_LOG, " elementUpdate");
		    break;
		case Z_IUOriginPartToKeep_specialUpdate:
		    yaz_log (LOG_LOG, " specialUpdate");
		    break;
		default:
		    yaz_log (LOG_LOG, " unknown (%d)", *toKeep->action);
		}
	    }
	    if (toKeep->databaseName)
	    {
		yaz_log (LOG_LOG, "database: %s", toKeep->databaseName);
		if (!strcmp(toKeep->databaseName, "fault"))
		{
		    rr->errcode = 109;
		    rr->errstring = toKeep->databaseName;
		}
		if (!strcmp(toKeep->databaseName, "accept"))
		    rr->errcode = -1;
	    }
	    if (toKeep)
	    {
		Z_External *ext = (Z_External *)
                    odr_malloc (rr->stream, sizeof(*ext));
		Z_IUOriginPartToKeep *keep = (Z_IUOriginPartToKeep *)
                    odr_malloc (rr->stream, sizeof(*keep));
		Z_IUTargetPart *targetPart = (Z_IUTargetPart *)
		    odr_malloc (rr->stream, sizeof(*targetPart));

		rr->taskPackage = (Z_TaskPackage *)
                    odr_malloc (rr->stream, sizeof(*rr->taskPackage));
		rr->taskPackage->packageType =
		    odr_oiddup (rr->stream, rr->esr->packageType);
		rr->taskPackage->packageName = 0;
		rr->taskPackage->userId = 0;
		rr->taskPackage->retentionTime = 0;
		rr->taskPackage->permissions = 0;
		rr->taskPackage->description = 0;
		rr->taskPackage->targetReference = (Odr_oct *)
		    odr_malloc (rr->stream, sizeof(Odr_oct));
		rr->taskPackage->targetReference->buf =
		    (unsigned char *) odr_strdup (rr->stream, "123");
		rr->taskPackage->targetReference->len =
		    rr->taskPackage->targetReference->size =
		    strlen((char *) (rr->taskPackage->targetReference->buf));
		rr->taskPackage->creationDateTime = 0;
		rr->taskPackage->taskStatus = odr_intdup(rr->stream, 0);
		rr->taskPackage->packageDiagnostics = 0;
		rr->taskPackage->taskSpecificParameters = ext;

		ext->direct_reference =
		    odr_oiddup (rr->stream, rr->esr->packageType);
		ext->indirect_reference = 0;
		ext->descriptor = 0;
		ext->which = Z_External_update;
		ext->u.update = (Z_IUUpdate *)
		    odr_malloc (rr->stream, sizeof(*ext->u.update));
		ext->u.update->which = Z_IUUpdate_taskPackage;
		ext->u.update->u.taskPackage =  (Z_IUUpdateTaskPackage *)
		    odr_malloc (rr->stream, sizeof(Z_IUUpdateTaskPackage));
		ext->u.update->u.taskPackage->originPart = keep;
		ext->u.update->u.taskPackage->targetPart = targetPart;

		keep->action = (int *) odr_malloc (rr->stream, sizeof(int));
		*keep->action = *toKeep->action;
		keep->databaseName =
		    odr_strdup (rr->stream, toKeep->databaseName);
		keep->schema = 0;
		keep->elementSetName = 0;
		keep->actionQualifier = 0;

		targetPart->updateStatus = odr_intdup (rr->stream, 1);
		targetPart->num_globalDiagnostics = 0;
		targetPart->globalDiagnostics = (Z_DiagRec **) odr_nullval();
		targetPart->num_taskPackageRecords = 1;
		targetPart->taskPackageRecords = 
                    (Z_IUTaskPackageRecordStructure **)
                    odr_malloc (rr->stream,
                                sizeof(Z_IUTaskPackageRecordStructure *));
		targetPart->taskPackageRecords[0] =
                    (Z_IUTaskPackageRecordStructure *)
                    odr_malloc (rr->stream,
                                sizeof(Z_IUTaskPackageRecordStructure));
                
		targetPart->taskPackageRecords[0]->which =
                    Z_IUTaskPackageRecordStructure_record;
		targetPart->taskPackageRecords[0]->u.record = 
                    z_ext_record (rr->stream, VAL_SUTRS, "test", 4);
		targetPart->taskPackageRecords[0]->correlationInfo = 0; 
		targetPart->taskPackageRecords[0]->recordStatus =
                    odr_intdup (rr->stream,
                                Z_IUTaskPackageRecordStructure_success);  
		targetPart->taskPackageRecords[0]->num_supplementalDiagnostics
                    = 0;

		targetPart->taskPackageRecords[0]->supplementalDiagnostics = 0;
            }
	    if (notToKeep)
	    {
		int i;
		for (i = 0; i < notToKeep->num; i++)
		{
		    Z_External *rec = notToKeep->elements[i]->record;

		    if (rec->direct_reference)
		    {
			struct oident *oident;
			oident = oid_getentbyoid(rec->direct_reference);
			if (oident)
			    yaz_log (LOG_LOG, "record %d type %s", i,
				     oident->desc);
		    }
		    switch (rec->which)
		    {
		    case Z_External_sutrs:
			if (rec->u.octet_aligned->len > 170)
			    yaz_log (LOG_LOG, "%d bytes:\n%.168s ...",
				     rec->u.sutrs->len,
				     rec->u.sutrs->buf);
			else
			    yaz_log (LOG_LOG, "%d bytes:\n%s",
				     rec->u.sutrs->len,
				     rec->u.sutrs->buf);
                        break;
		    case Z_External_octet        :
			if (rec->u.octet_aligned->len > 170)
			    yaz_log (LOG_LOG, "%d bytes:\n%.168s ...",
				     rec->u.octet_aligned->len,
				     rec->u.octet_aligned->buf);
			else
			    yaz_log (LOG_LOG, "%d bytes\n%s",
				     rec->u.octet_aligned->len,
				     rec->u.octet_aligned->buf);
		    }
		}
	    }
	}
    }
    else if (rr->esr->taskSpecificParameters->which == Z_External_update0)
    {
	yaz_log(LOG_LOG, "Received DB Update (version 0)");
    }
    else
    {
        yaz_log (LOG_WARN, "Unknown Extended Service(%d)",
		 rr->esr->taskSpecificParameters->which);
	
    }
    return 0;
}

/* result set delete */
int ztest_delete (void *handle, bend_delete_rr *rr)
{
    if (rr->num_setnames == 1 && !strcmp (rr->setnames[0], "1"))
	rr->delete_status = Z_DeleteStatus_success;
    else
        rr->delete_status = Z_DeleteStatus_resultSetDidNotExist;
    return 0;
}

/* Our sort handler really doesn't sort... */
int ztest_sort (void *handle, bend_sort_rr *rr)
{
    rr->errcode = 0;
    rr->sort_status = Z_SortStatus_success;
    return 0;
}


/* present request handler */
int ztest_present (void *handle, bend_present_rr *rr)
{
    return 0;
}

/* retrieval of a single record (present, and piggy back search) */
int ztest_fetch(void *handle, bend_fetch_rr *r)
{
    char *cp;
    r->errstring = 0;
    r->last_in_set = 0;
    r->basename = "Default";
    r->output_format = r->request_format;  
    if (r->request_format == VAL_SUTRS)
    {
        /* this section returns a small record */
    	char buf[100];
        
	sprintf(buf, "This is dummy SUTRS record number %d\n", r->number);

	r->len = strlen(buf);
	r->record = (char *) odr_malloc (r->stream, r->len+1);
	strcpy(r->record, buf);
    }
    else if (r->request_format == VAL_GRS1)
    {
	r->len = -1;
	r->record = (char*) dummy_grs_record(r->number, r->stream);
	if (!r->record)
	{
	    r->errcode = 13;
	    return 0;
	}
    }
    else if (r->request_format == VAL_POSTSCRIPT)
    {
        char fname[20];
        FILE *f;
        long size;

        sprintf (fname, "part.%d.ps", r->number);
        f = fopen(fname, "rb");
        if (!f)
	{
            r->errcode = 13;
            return 0;
        }
        fseek (f, 0L, SEEK_END);
        size = ftell (f);
        if (size <= 0 || size >= 5000000)
        {
            r->errcode = 14;
            return 0;
        }
        fseek (f, 0L, SEEK_SET);
        r->record = (char*) odr_malloc (r->stream, size);
        r->len = size;
        r->output_format = VAL_POSTSCRIPT;
        fread (r->record, size, 1, f);
        fclose (f);
    }
    else if (r->request_format == VAL_TEXT_XML &&
             (cp = dummy_xml_record (r->number, r->stream)))
    {
        r->len = strlen(cp);
        r->record = cp;
        r->output_format = VAL_TEXT_XML;
    }
    else if ((cp = dummy_marc_record(r->number, r->stream)))
    {
	r->len = strlen(cp);
	r->record = cp;
	r->output_format = VAL_USMARC;
    }
    else
    {
    	r->errcode = 13;
	return 0;
    }
    r->errcode = 0;
    return 0;
}

/*
 * silly dummy-scan what reads words from a file.
 */
int ztest_scan(void *handle, bend_scan_rr *q)
{
    static FILE *f = 0;
    static struct scan_entry list[200];
    static char entries[200][80];
    int hits[200];
    char term[80], *p;
    int i, pos;
    int term_position_req = q->term_position;
    int num_entries_req = q->num_entries;

    q->errcode = 0;
    q->errstring = 0;
    q->entries = list;
    q->status = BEND_SCAN_SUCCESS;
    if (!f && !(f = fopen("dummy-words", "r")))
    {
	perror("dummy-words");
	exit(1);
    }
    if (q->term->term->which != Z_Term_general)
    {
    	q->errcode = 229; /* unsupported term type */
	return 0;
    }
    if (*q->step_size != 0)
    {
	q->errcode = 205; /*Only zero step size supported for Scan */
	return 0;
    }
    if (q->term->term->u.general->len >= 80)
    {
    	q->errcode = 11; /* term too long */
	return 0;
    }
    if (q->num_entries > 200)
    {
    	q->errcode = 31;
	return 0;
    }
    memcpy(term, q->term->term->u.general->buf, q->term->term->u.general->len);
    term[q->term->term->u.general->len] = '\0';
    for (p = term; *p; p++)
    	if (islower(*p))
	    *p = toupper(*p);

    fseek(f, 0, SEEK_SET);
    q->num_entries = 0;

    for (i = 0, pos = 0; fscanf(f, " %79[^:]:%d", entries[pos], &hits[pos]) == 2;
	i++, pos < 199 ? pos++ : (pos = 0))
    {
    	if (!q->num_entries && strcmp(entries[pos], term) >= 0) /* s-point fnd */
	{
	    if ((q->term_position = term_position_req) > i + 1)
	    {
	    	q->term_position = i + 1;
		q->status = BEND_SCAN_PARTIAL;
	    }
	    for (; q->num_entries < q->term_position; q->num_entries++)
	    {
	    	int po;

		po = pos - q->term_position + q->num_entries+1; /* find pos */
		if (po < 0)
		    po += 200;

		if (!strcmp (term, "SD") && q->num_entries == 2)
		{
		    list[q->num_entries].term = entries[pos];
		    list[q->num_entries].occurrences = -1;
		    list[q->num_entries].errcode = 233;
		    list[q->num_entries].errstring = "SD for Scan Term";
		}
		else
		{
		    list[q->num_entries].term = entries[po];
		    list[q->num_entries].occurrences = hits[po];
		}
	    }
	}
	else if (q->num_entries)
	{
	    list[q->num_entries].term = entries[pos];
	    list[q->num_entries].occurrences = hits[pos];
	    q->num_entries++;
	}
	if (q->num_entries >= num_entries_req)
	    break;
    }
    if (feof(f))
    	q->status = BEND_SCAN_PARTIAL;
    return 0;
}

static int ztest_explain(void *handle, bend_explain_rr *rr)
{
    rr->explain_buf = "<explain>\n"
        "\t<serverInfo>\n"
        "\t\t<host>localhost</host>\n"
        "\t\t<port>210</port>\n"
        "\t</serverInfo>\n"
        "</explain>\n";
    return 0;
}

bend_initresult *bend_init(bend_initrequest *q)
{
    bend_initresult *r = (bend_initresult *)
        odr_malloc (q->stream, sizeof(*r));
    int *counter = (int *) xmalloc (sizeof(int));

    *counter = 0;
    r->errcode = 0;
    r->errstring = 0;
    r->handle = counter;         /* user handle, in this case a simple int */
    q->bend_sort = ztest_sort;              /* register sort handler */
    q->bend_search = ztest_search;          /* register search handler */
    q->bend_present = ztest_present;        /* register present handle */
    q->bend_esrequest = ztest_esrequest;
    q->bend_delete = ztest_delete;
    q->bend_fetch = ztest_fetch;
    q->bend_scan = ztest_scan;
    q->bend_explain = ztest_explain;
    return r;
}

void bend_close(void *handle)
{
    xfree (handle);              /* release our user-defined handle */
    return;
}

int main(int argc, char **argv)
{
    return statserv_main(argc, argv, bend_init, bend_close);
}
