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/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
#include "server.h"
const char *SearchQuery = SQL(
SELECT
events.event,
events.time,
contexts.network,
contexts.name,
events.type,
names.nick,
names.user,
names.host,
events.target,
highlight(search, 6, :highlight, :highlight)
FROM events
JOIN contexts USING (context)
JOIN names USING (name)
JOIN search ON search.rowid = events.event
WHERE coalesce(contexts.network = :network, true)
AND coalesce(contexts.name = :context, true)
AND contexts.query <= NOT :public
AND search MATCH :query
LIMIT :offset, :limit;
);
static char *offsetURL(
const char *network, const char *context, const char *query, int64_t offset
) {
char *url = khttp_urlpartx(
NULL, NULL, Pages[Search],
Keys[Query].name, KATTRX_STRING, query,
Keys[Offset].name, KATTRX_INT, offset,
(network ? Keys[Network].name : NULL), KATTRX_STRING, network,
(context ? Keys[Context].name : NULL), KATTRX_STRING, context,
NULL
);
if (!url) err(EX_OSERR, "khttp_urlpartx");
return url;
}
enum kcgi_err searchPage(struct kreq *req) {
if (!req->fieldmap[Query]) return httpFail(req, KHTTP_400);
const char *query = req->fieldmap[Query]->parsed.s;
const char *network = NULL;
const char *context = NULL;
int64_t offset = 0;
if (req->fieldmap[Network]) network = req->fieldmap[Network]->parsed.s;
if (req->fieldmap[Context]) context = req->fieldmap[Context]->parsed.s;
if (req->fieldmap[Offset]) offset = req->fieldmap[Offset]->parsed.i;
if (context && !network) return httpFail(req, KHTTP_400);
enum kcgi_err error = 0
|| httpHead(req, KHTTP_200, KMIME_TEXT_HTML)
|| khttp_body(req);
if (req->method == KMETHOD_HEAD) return error;
struct khtmlreq html;
error = error
|| khtml_open(&html, req, 0)
|| htmlHead(&html, query)
|| htmlNav(&html, req)
|| khtml_elem(&html, KELEM_TABLE);
if (error) return error;
if (offset) {
int64_t prev = offset - eventsLimit;
char *href = offsetURL(network, context, query, (prev > 0 ? prev : 0));
error = 0
|| khtml_attr(&html, KELEM_TR, KATTR_CLASS, "page", KATTR__MAX)
|| khtml_attr(&html, KELEM_TH, KATTR_COLSPAN, "5", KATTR__MAX)
|| khtml_attr(&html, KELEM_A, KATTR_HREF, href, KATTR__MAX)
|| khtml_puts(&html, "Earlier results")
|| khtml_closeelem(&html, 3);
free(href);
if (error) return error;
}
sqlite3_reset(stmt.search);
dbBindText(stmt.search, ":highlight", "\26");
dbBindText(stmt.search, ":network", network);
dbBindText(stmt.search, ":context", context);
dbBindText(stmt.search, ":query", query);
dbBindInt(stmt.search, ":public", contextsPublic);
dbBindInt(stmt.search, ":limit", eventsLimit);
dbBindInt(stmt.search, ":offset", offset);
int rows;
int result;
for (rows = 0; SQLITE_ROW == (result = sqlite3_step(stmt.search)); ++rows) {
int i = 0;
struct Event event = {0};
event.event = sqlite3_column_int64(stmt.search, i++);
event.time = sqlite3_column_int64(stmt.search, i++);
event.network = sqlite3_column_text(stmt.search, i++);
event.context = sqlite3_column_text(stmt.search, i++);
event.type = sqlite3_column_int(stmt.search, i++);
event.nick = sqlite3_column_text(stmt.search, i++);
event.user = sqlite3_column_text(stmt.search, i++);
event.host = sqlite3_column_text(stmt.search, i++);
event.target = sqlite3_column_text(stmt.search, i++);
event.message = sqlite3_column_text(stmt.search, i++);
error = htmlEvent(&html, req, &event);
if (error) return error;
}
if (result != SQLITE_DONE) {
return 0
|| khtml_attr(&html, KELEM_TR, KATTR_CLASS, "error", KATTR__MAX)
|| khtml_elem(&html, KELEM_TH)
|| khtml_puts(&html, sqlite3_errmsg(db))
|| htmlFooter(&html)
|| khtml_close(&html);
}
if (rows == eventsLimit) {
char *href = offsetURL(network, context, query, offset + eventsLimit);
error = 0
|| khtml_attr(&html, KELEM_TR, KATTR_CLASS, "page", KATTR__MAX)
|| khtml_attr(&html, KELEM_TH, KATTR_COLSPAN, "5", KATTR__MAX)
|| khtml_attr(&html, KELEM_A, KATTR_HREF, href, KATTR__MAX)
|| khtml_puts(&html, "Later results")
|| khtml_closeelem(&html, 3);
free(href);
if (error) return error;
}
if (!rows) {
error = 0
|| khtml_elem(&html, KELEM_TR)
|| khtml_elem(&html, KELEM_TH)
|| khtml_puts(&html, "No matching messages");
if (error) return error;
}
return htmlFooter(&html) || khtml_close(&html);
}
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