1 files changed, 72 insertions, 0 deletions
diff --git a/contexts.c b/contexts.c
new file mode 100644
index 0000000..7adfa34
--- /dev/null
+++ b/contexts.c
@@ -0,0 +1,72 @@
+/* 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(
+	SELECT name
+	FROM contexts
+	WHERE network = :network AND coalesce(query = :query, true)
+	ORDER BY query, name;
+);
+
+enum kcgi_err pageContexts(struct kreq *req) {
+	if (!req->fieldmap[Network]) return httpFail(req, KHTTP_404);
+	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)
+		|| khtml_elem(&html, KELEM_UL);
+	if (error) return error;
+
+	dbBindText(stmt.contexts, ":network", network);
+	if (pagePublic) dbBindInt(stmt.contexts, ":query", false);
+
+	int result;
+	while (SQLITE_ROW == (result = sqlite3_step(stmt.contexts))) {
+		const char *context = (const char *)sqlite3_column_text(stmt.contexts, 0);
+		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 = 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 || khtml_close(&html);
+}