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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Udacity Todos Goals</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/redux/3.7.2/redux.min.js"></script>
<script src="https://unpkg.com/react@16.3.0-alpha.1/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16.3.0-alpha.1/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js"></script>
<script src="https://tylermcginnis.com/goals-todos-api/index.js"></script>
<script src="https://unpkg.com/redux-thunk@2.2.0/dist/redux-thunk.min.js"></script>
</head>
<body>
<div id="app"></div>
<script type="text/javascript">
function generateId() {
return (
Math.random()
.toString(36)
.substring(2) + new Date().getTime().toString(36)
);
}
const ADD_TODO = 'ADD_TODO';
const REMOVE_TODO = 'REMOVE_TODO';
const TOGGLE_TODO = 'TOGGLE_TODO';
const ADD_GOAL = 'ADD_GOAL';
const REMOVE_GOAL = 'REMOVE_GOAL';
const TOGGLE_GOAL = 'TOGGLE_GOAL';
const RECEIVE_DATA = 'RECEIVE_DATA';
function addTodoAction(todo) {
return {
type: ADD_TODO,
todo
};
}
function removeTodoAction(id) {
return {
type: REMOVE_TODO,
id
};
}
function toggleTodoAction(id) {
return {
type: TOGGLE_TODO,
id
};
}
function addGoalAction(goal) {
return {
type: ADD_GOAL,
goal
};
}
function removeGoalAction(id) {
return {
type: REMOVE_GOAL,
id
};
}
function toggleGoalAction(id) {
return {
type: TOGGLE_GOAL,
id
};
}
function receiveDataAction(todos, goals) {
return {
type: RECEIVE_DATA,
todos,
goals
};
}
function handleAddTodo(name, cb) {
return dispatch => {
return API.saveTodo(name)
.then(todo => {
dispatch(addTodoAction(todo));
cb();
})
.catch(() => {
alert('There was a problem with the update. Please try again!');
});
};
}
function handleDeleteTodo(item) {
return dispatch => {
dispatch(removeTodoAction(item.id));
API.deleteTodo(item.id).catch(() => {
dispatch(addTodoAction(item));
alert('There was a problem with the update. Please try again!');
});
};
}
function handleToggleTodo(item) {
return dispatch => {
dispatch(toggleTodoAction(item.id));
API.saveTodoToggle(item.id).catch(() => {
dispatch(toggleTodoAction(item.id));
alert('There was a problem with the update. Please try again!');
});
};
}
function handleAddGoal(name, cb) {
return dispatch => {
return API.saveGoal(name)
.then(goal => {
dispatch(addGoalAction(goal));
cb();
})
.catch(() => {
alert('There was a problem with the update. Please try again!');
});
};
}
function handleDeleteGoal(item) {
return dispatch => {
dispatch(removeGoalAction(item.id));
API.deleteGoal(item.id).catch(() => {
dispatch(addGoalAction(item));
alert('There was a problem with the update. Please try again!');
});
};
}
function todos(state = [], action) {
switch (action.type) {
case ADD_TODO:
return state.concat([action.todo]);
case REMOVE_TODO:
return state.filter(item => item.id !== action.id);
case TOGGLE_TODO:
return state.map(item =>
item.id !== action.id
? item
: Object.assign({}, item, { complete: !item.complete })
);
case RECEIVE_DATA:
return action.todos;
default:
return state;
}
}
function handleInitialData() {
return dispatch => {
Promise.all([API.fetchTodos(), API.fetchGoals()]).then(
([todos, goals]) => {
dispatch(receiveDataAction(todos, goals));
}
);
};
}
function goals(state = [], action) {
switch (action.type) {
case ADD_GOAL:
return state.concat([action.goal]);
case REMOVE_GOAL:
return state.filter(item => item.id !== action.id);
case TOGGLE_GOAL:
return state.map(item =>
item.id !== action.id
? item
: Object.assign({}, item, { complete: !item.complete })
);
case RECEIVE_DATA:
return action.goals;
default:
return state;
}
}
function loading(state = true, action) {
switch (action.type) {
case RECEIVE_DATA:
return false;
default:
return state;
}
}
const checker = store => next => action => {
if (
action.type === ADD_TODO &&
action.todo.name.toLowerCase().includes('bitcoin')
) {
return alert("Nope. That's a bad idea.");
}
if (
action.type === ADD_GOAL &&
action.goal.name.toLowerCase().includes('bitcoin')
) {
return alert("Nope. That's a bad idea.");
}
return next(action);
};
const logger = store => next => action => {
console.group(action.type);
console.log('The action : ', action);
const result = next(action);
console.log('The new state : ', store.getState());
console.groupEnd();
return result;
};
const store = Redux.createStore(
Redux.combineReducers({
todos,
goals,
loading
}),
Redux.applyMiddleware(ReduxThunk.default, checker, logger)
);
</script>
<script type="text/babel">
function List(props) {
return (
<ul>
{props.items.map(item => (
<li key={item.id}>
<span
onClick={() => props.toggle && props.toggle(item)}
style={{
textDecoration: item.complete ? 'line-through' : 'none'
}}
>
{item.name}
</span>
<button onClick={() => props.removeItem(item)}>X</button>
</li>
))}
</ul>
);
}
class Todos extends React.Component {
addItem = e => {
e.preventDefault();
this.props.dispatch(
handleAddTodo(this.input.value, () => (this.input.value = ''))
);
};
removeItem = item => {
this.props.dispatch(handleDeleteTodo(item));
};
toggleItem = item => {
this.props.dispatch(handleToggleTodo(item));
};
render() {
return (
<div>
<h1>Todos</h1>
<input
type="text"
placeholder="Add a todo item"
ref={input => {
this.input = input;
}}
/>
<button onClick={this.addItem}>Add Todo</button>
<List
items={this.props.todos}
removeItem={this.removeItem}
toggle={this.toggleItem}
/>
</div>
);
}
}
const ConnectedTodos = connect(state => ({
todos: state.todos
}))(Todos);
class Goals extends React.Component {
addItem = e => {
e.preventDefault();
this.props.dispatch(
handleAddGoal(this.input.value, () => (this.input.value = ''))
);
};
removeItem = item => {
this.props.dispatch(handleDeleteGoal(item));
};
toggleItem = item => {
this.props.dispatch(toggleGoalAction(item.id));
};
render() {
return (
<div>
<h1>Goals</h1>
<input
type="text"
placeholder="Add a goal item"
ref={input => {
this.input = input;
}}
/>
<button onClick={this.addItem}>Add Goal</button>
<List items={this.props.goals} removeItem={this.removeItem} />
</div>
);
}
}
const ConnectedGoals = connect(state => ({
goals: state.goals
}))(Goals);
class App extends React.Component {
componentDidMount = () => {
const { dispatch } = this.props;
dispatch(handleInitialData());
};
render() {
const { loading } = this.props;
return (
<div>
<h1>Redux Demo</h1>
{loading ? (
<divs
style={{
display: 'flex',
alignItems: 'center',
justifyContent: 'center',
flexDirection: 'column'
}}
>
<h2>Loading...</h2>
<img src="./loading.gif" alt="loading indicator" />
</divs>
) : (
<div>
<ConnectedTodos />
<ConnectedGoals />
</div>
)}
</div>
);
}
}
const ConnectedApp = connect(state => ({
loading: state.loading
}))(App);
function connect(mapStateToProps) {
return Component => {
class Receiver extends React.Component {
componentDidMount() {
const { subscribe } = this.props.store;
this.unsubscribe = subscribe(() => {
this.forceUpdate();
});
}
componentWillUnmount() {
this.unsubscribe();
}
render() {
const { dispatch, getState } = this.props.store;
const state = getState();
const stateNeeded = mapStateToProps(state);
return <Component {...stateNeeded} dispatch={dispatch} />;
}
}
class ConnectedComponent extends React.Component {
render() {
return (
<Context.Consumer>
{store => <Receiver store={store} />}
</Context.Consumer>
);
}
}
return ConnectedComponent;
};
}
const Context = React.createContext();
class Provider extends React.Component {
render() {
return (
<Context.Provider value={this.props.store}>
{this.props.children}
</Context.Provider>
);
}
}
ReactDOM.render(
<Provider store={store}>
<ConnectedApp />
</Provider>,
document.getElementById('app')
);
</script>
</body>
</html>