sandboxos => tildefriends

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3157 ed5197a5-7fde-0310-b194-c3ffbd925b24

packages/cory/todo/todo.js

@@ -0,0 +1,204 @@
+"use strict";
+
+var kUnchecked = "☐";
+var kChecked = "☑";
+
+let activeList = null;
+let confirmRemove;
+
+terminal.setPrompt("Add Item>");
+
+core.register("onInput", function(command) {
+	if (typeof command == "string" && command.substring(0, "action:".length) == "action:") {
+		command = JSON.parse(command.substring("action:".length));
+		if (confirmRemove && command.action != "reallyRemoveList" && command.action != "reallyRemove") {
+			confirmRemove = false;
+		}
+		if (command.action == "set") {
+			setItem(command.key, command.item, command.value).then(notifyChanged).then(redisplay);
+		} else if (command.action == "remove") {
+			confirmRemove = command;
+			redisplay();
+		} else if (command.action == "reallyRemove") {
+			confirmRemove = false;
+			removeItem(command.key, command.item).then(notifyChanged).then(redisplay);
+		} else if (command.action == "editList") {
+			activeList = command.key;
+			terminal.setHash(activeList);
+			redisplay();
+		} else if (command.action == "lists") {
+			activeList = null;
+			redisplay();
+		} else if (command.action == "removeList") {
+			confirmRemove = true;
+			redisplay();
+		} else if (command.action == "reallyRemoveList") {
+			confirmRemove = false;
+			activeList = null;
+			database.remove(command.key).then(notifyChanged).then(redisplay).catch(function(error) {
+				terminal.print(JSON.stringify(error));
+				terminal.print(command.key);
+			});
+		}
+	} else if (typeof command == "string") {
+		if (activeList) {
+			addItem(activeList, command).then(notifyChanged).then(redisplay);
+		} else {
+			activeList = makePrivateKey(command);
+			writeList(activeList, {name: command, items: []}).then(notifyChanged).then(redisplay);
+		}
+	} else if (command.hash) {
+		activeList = command.hash;
+		if (activeList.charAt(0) == "#") {
+			activeList = activeList.substring(1);
+		}
+		redisplay();
+	}
+});
+
+core.register("onMessage", function(message) {
+	return redisplay();
+});
+
+function notifyChanged() {
+	return core.broadcast({changed: true});
+}
+
+function readList(key) {
+	return database.get(key).catch(function(error) {
+		return null;
+	}).then(function(todo) {
+		try {
+			todo = JSON.parse(todo);
+		} catch (error) {
+			todo = {name: "TODO", items: []};
+		}
+		return todo;
+	});
+}
+
+function writeList(key, todo) {
+	return database.set(key, JSON.stringify(todo));
+}
+
+function addItem(key, name) {
+	return readList(key).then(function(todo) {
+		todo.items.push({name: name, value: false});
+		return writeList(key, todo);
+	});
+}
+
+function setItem(key, name, value) {
+	return readList(key).then(function(todo) {
+		for (var i = 0; i < todo.items.length; i++) {
+			if (todo.items[i].name == name) {
+				todo.items[i].value = value;
+			}
+		}
+		return writeList(key, todo);
+	});
+}
+
+function removeItem(key, name) {
+	return readList(key).then(function(todo) {
+		todo.items = todo.items.filter(function(item) {
+			return item.name != name;
+		});
+		return writeList(key, todo);
+	});
+}
+
+function printList(name, key, items) {
+	terminal.print(name,
+		" - ",
+		{command: "action:" + JSON.stringify({action: "lists"}), value: "back"},
+		" - ",
+		{command: "action:" + JSON.stringify({action: (confirmRemove === true ? "reallyRemoveList" : "removeList"), key: key}), value: (confirmRemove === true ? "confirm remove" : "remove")});
+	terminal.print("=".repeat(name.length));
+	for (var i = 0; i < items.length; i++) {
+		var isChecked = items[i].value;
+		var style = ["", "text-decoration: line-through"];
+		terminal.print(
+			{command: "action:" + JSON.stringify({action: "set", key: key, item: items[i].name, value: !isChecked}), value: isChecked ? kChecked : kUnchecked},
+			" ",
+			{style: style[isChecked ? 1 : 0], value: items[i].name},
+			" (",
+			{command: "action:" + JSON.stringify({
+				action: (confirmRemove && confirmRemove.item == items[i].name ? "reallyRemove" : "remove"),
+				key: key,
+				item: items[i].name}), value: (confirmRemove && confirmRemove.item == items[i].name ? "confirm remove" : "remove")},
+			")");
+	}
+}
+
+function redisplay() {
+	terminal.clear();
+	terminal.setEcho(false);
+	if (activeList) {
+		readList(activeList).then(function(data) {
+			printList(getName(activeList), activeList, data.items);
+		}).catch(function(error) {
+			terminal.print("error: " + error);
+		});
+	} else {
+		printListOfLists();
+	}
+}
+
+function makeId() {
+	var alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+	var result = "";
+	for (var i = 0; i < 32; i++) {
+		result += alphabet.charAt(Math.floor(Math.random() * alphabet.length));
+	}
+	return result;
+}
+
+function makePublicKey(name) {
+	return JSON.stringify({public: true, id: makeId(), name: name});
+}
+
+function makePrivateKey(name) {
+	return JSON.stringify({public: false, id: makeId(), name: name, user: core.user.name});
+}
+
+function hasPermission(key) {
+	let result = false;
+	try {
+		let data = JSON.parse(key);
+		result = data.public || data.user == core.user.name;
+	} catch (error) {
+		result = true;
+	}
+	return result;
+}
+
+function getName(key) {
+	let name = "TODO";
+	try {
+		name = JSON.parse(key).name || name;
+	} catch (error) {
+	}
+	return name;
+}
+
+function getVisibleLists() {
+	return database.getAll().then(function(data) {
+		return data.filter(hasPermission);
+	});
+}
+
+function printListOfLists() {
+	terminal.print("TODO Lists:");
+	getVisibleLists().then(function(keys) {
+		for (var i = 0; i < keys.length; i++) {
+			let key = keys[i];
+			terminal.print({
+				command: "action:" + JSON.stringify({action: "editList", key: key}),
+				value: getName(key),
+			});
+		}
+	});
+}
+
+redisplay();