From d802c0023b34db8f178ace10f8e2132663117180 Mon Sep 17 00:00:00 2001
From: Cory McWilliams <cory@unprompted.com>
Date: Thu, 14 Apr 2022 23:47:06 +0000
Subject: [PATCH] Added a database exchange operation, and some context when
 uploading a file.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3865 ed5197a5-7fde-0310-b194-c3ffbd925b24
---
 core/client.js    |  2 +-
 src/database.js.c | 24 +++++++++++++++++++++++-
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/core/client.js b/core/client.js
index adf57494..7cf81cfe 100644
--- a/core/client.js
+++ b/core/client.js
@@ -637,7 +637,7 @@ function message(event) {
 			return response.text();
 		}).then(function(text) {
 			var iframe = document.getElementById("document");
-			iframe.contentWindow.postMessage({'storeBlobComplete': {name: event.data.blob.name, path: text, type: event.data.blob.type}}, '*');
+			iframe.contentWindow.postMessage({'storeBlobComplete': {name: event.data.blob.name, path: text, type: event.data.blob.type, context: event.data.context}}, '*');
 		});
 	} else {
 		send({event: "message", message: event.data});
diff --git a/src/database.js.c b/src/database.js.c
index b309d05f..3d602425 100644
--- a/src/database.js.c
+++ b/src/database.js.c
@@ -149,7 +149,27 @@ static JSValue _database_exchange(JSContext* context, JSValueConst this_val, int
 	if (database)
 	{
 		sqlite3_stmt* statement;
-		if (sqlite3_prepare(database->db, "UPDATE properties SET value = $1 WHERE id = $2 AND key = $3 AND value = $4", -1, &statement, NULL) == SQLITE_OK)
+		if (JS_IsNull(argv[1]) || JS_IsUndefined(argv[1]))
+		{
+			if (sqlite3_prepare(database->db, "INSERT INTO properties (id, key, value) VALUES ($1, $2, $3) ON CONFLICT DO NOTHING", -1, &statement, NULL) == SQLITE_OK)
+			{
+				size_t key_length;
+				size_t set_length;
+				const char* key = JS_ToCStringLen(context, &key_length, argv[0]);
+				const char* set = JS_ToCStringLen(context, &set_length, argv[2]);
+				if (sqlite3_bind_text(statement, 1, database->id, -1, NULL) == SQLITE_OK &&
+					sqlite3_bind_text(statement, 2, key, key_length, NULL) == SQLITE_OK &&
+					sqlite3_bind_text(statement, 3, set, set_length, NULL) == SQLITE_OK &&
+					sqlite3_step(statement) == SQLITE_DONE)
+				{
+					exchanged = sqlite3_changes(database->db) != 0 ? JS_TRUE : JS_FALSE;
+				}
+				JS_FreeCString(context, key);
+				JS_FreeCString(context, set);
+				sqlite3_finalize(statement);
+			}
+		}
+		else if (sqlite3_prepare(database->db, "UPDATE properties SET value = $1 WHERE id = $2 AND key = $3 AND value = $4", -1, &statement, NULL) == SQLITE_OK)
 		{
 			size_t key_length;
 			size_t expected_length;
@@ -166,6 +186,8 @@ static JSValue _database_exchange(JSContext* context, JSValueConst this_val, int
 				exchanged = sqlite3_changes(database->db) != 0 ? JS_TRUE : JS_FALSE;
 			}
 			JS_FreeCString(context, key);
+			JS_FreeCString(context, expected);
+			JS_FreeCString(context, set);
 			sqlite3_finalize(statement);
 		}
 	}