From 718383205bb3b06f55eac2cec04c6da368fd60ba Mon Sep 17 00:00:00 2001
From: Cory McWilliams <cory@unprompted.com>
Date: Mon, 20 Jun 2022 18:13:19 +0000
Subject: [PATCH] Add a thing to remove apps from your app list.  Should I have
 called in 'uninstall'?

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3916 ed5197a5-7fde-0310-b194-c3ffbd925b24
---
 core/client.js  | 16 ++++++++++++++++
 core/core.js    | 30 +++++++++++++++++++++++++++++-
 core/index.html |  1 +
 3 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/core/client.js b/core/client.js
index b911aa0d..ac8f544a 100644
--- a/core/client.js
+++ b/core/client.js
@@ -366,6 +366,22 @@ function save(save_to) {
 	});
 }
 
+function deleteApp() {
+	let name = document.getElementById("name");
+	let path = name && name.value ? name.value : url();
+
+	if (confirm(`Are you sure you want to delete the app '${path}'?`)) {
+		fetch(path + 'delete').then(function(response) {
+			if (!response.ok) {
+				throw new Error(response.status + ' ' + response.statusText);
+			}
+			alert('Deleted.');
+		}).catch(function(error) {
+			alert(error);
+		});
+	}
+}
+
 function pullFromParent() {
 	load(gParentApp ? gParentApp.path : null).then(x => save()).catch(function(error) {
 		alert(error)
diff --git a/core/core.js b/core/core.js
index f04d3c0c..2062e0cf 100644
--- a/core/core.js
+++ b/core/core.js
@@ -459,6 +459,34 @@ async function blobHandler(request, response, blobId, uri) {
 
 			response.writeHead(200, {"Content-Type": "text/plain; charset=utf-8"});
 			response.end("/" + newBlobId);
+		} else if (uri == "/delete") {
+			let match;
+			if (match = /^\/\~(\w+)\/(\w+)$/.exec(blobId)) {
+				var user = match[1];
+				var appName = match[2];
+				var credentials = auth.query(request.headers);
+				if (credentials && credentials.session &&
+					(credentials.session.name == user ||
+					(credentials.permissions.administration && user == 'core'))) {
+					var database = new Database(user);
+					var apps = new Set();
+					try {
+						apps = new Set(JSON.parse(database.get('apps')));
+					} catch {
+					}
+					if (apps.delete(appName)) {
+						database.set('apps', JSON.stringify([...apps]));
+					}
+					database.remove('path:' + appName);
+				} else {
+					response.writeHead(401, {"Content-Type": "text/plain; charset=utf-8"});
+					response.end("401 Unauthorized");
+					return;
+				}
+			}
+
+			response.writeHead(200, {"Content-Type": "text/plain; charset=utf-8"});
+			response.end('OK');
 		} else {
 			var data;
 			var type;
@@ -581,7 +609,7 @@ loadSettings().then(function() {
 			return staticDirectoryHandler(request, response, 'deps/split/', match[1]);
 		} else if (match = /^\/smoothie\/([\.\w-/]*)$/.exec(request.uri)) {
 			return staticDirectoryHandler(request, response, 'deps/smoothie/', match[1]);
-		} else if (match = /^(.*)(\/save?)$/.exec(request.uri)) {
+		} else if (match = /^(.*)(\/(?:save|delete)?)$/.exec(request.uri)) {
 			return blobHandler(request, response, match[1], match[2]);
 		} else if (match = /^\/trace$/.exec(request.uri)) {
 			var data = trace();
diff --git a/core/index.html b/core/index.html
index f338d4de..2514c3ad 100644
--- a/core/index.html
+++ b/core/index.html
@@ -33,6 +33,7 @@
 					<input type="button" id="push_to_parent" value="Push to Parent" onclick="pushToParent()">
 					<input type="button" id="pull_from_parent" value="Pull from Parent" onclick="pullFromParent()">
 					<input type="button" id="revert" name="revert" value="Revert to Saved" onclick="revert()">
+					<input type="button" id="delete" name="delete" value="Delete" onclick="deleteApp()">
 				</div>
 				<div class="hbox" style="height: 100%">
 					<div id="filesPane">