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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 *ContextsQuery = SQL(
WITH recentEvents AS (
SELECT time, context
FROM events
ORDER BY event DESC
LIMIT :recent
), activeContexts AS (
SELECT name, query
FROM contexts
JOIN recentEvents USING (context)
WHERE network = :network AND coalesce(query = :query, true)
GROUP BY context
ORDER BY max(time) DESC
), allContexts AS (
SELECT name, query
FROM contexts
WHERE network = :network AND coalesce(query = :query, true)
ORDER BY query, name
)
SELECT name, query, 1 FROM activeContexts
UNION ALL
SELECT name, query, 0 FROM allContexts;
);
enum kcgi_err pageContexts(struct kreq *req) {
if (!req->fieldmap[Network]) return httpFail(req, KHTTP_400);
enum kcgi_err error = httpHead(req, KHTTP_200, KMIME_TEXT_HTML);
if (req->method == KMETHOD_HEAD) return error;
const char *network = req->fieldmap[Network]->parsed.s;
struct khtmlreq html;
error = error
|| khttp_body(req)
|| khtml_open(&html, req, KHTML_PRETTY)
|| htmlHead(&html, network)
|| htmlNav(&html, network, NULL);
if (error) return error;
dbBindInt(stmt.contexts, ":recent", pageRecent);
dbBindText(stmt.contexts, ":network", network);
if (pagePublic) dbBindInt(stmt.contexts, ":query", false);
enum State {
None,
Active,
Channels,
Queries,
} state = None;
const char *Headings[] = { NULL, "Active", "Channels", "Queries" };
int result;
while (SQLITE_ROW == (result = sqlite3_step(stmt.contexts))) {
const char *context = (const char *)sqlite3_column_text(stmt.contexts, 0);
bool query = sqlite3_column_int(stmt.contexts, 1);
bool active = sqlite3_column_int(stmt.contexts, 2);
enum State prev = state;
state = (active ? Active : (query ? Queries : Channels));
if (state != prev) {
error = 0
|| khtml_closeelem(&html, 1)
|| khtml_elem(&html, KELEM_H2)
|| khtml_puts(&html, Headings[state])
|| khtml_closeelem(&html, 1)
|| khtml_elem(&html, KELEM_UL);
if (error) return error;
}
char *href = khttp_urlpart(
NULL, NULL, Pages[Events],
Keys[Network].name, network,
Keys[Context].name, context,
NULL
);
if (!href) err(EX_OSERR, "khttp_urlpart");
error = 0
|| khtml_elem(&html, KELEM_LI)
|| khtml_attr(&html, KELEM_A, KATTR_HREF, href, KATTR__MAX)
|| khtml_puts(&html, context)
|| khtml_closeelem(&html, 2);
free(href);
if (error) break;
}
if (result != SQLITE_DONE) errx(EX_SOFTWARE, "%s", sqlite3_errmsg(db));
sqlite3_reset(stmt.contexts);
return error
|| htmlFooter(&html)
|| khtml_close(&html);
}
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