<script>
	import { onMount } from 'svelte';

	import { boot, subscribeToEvents } from '../apiServer';
	import { currentUser } from '../store';

    import ActiveChannel from '../lib/ActiveChannel.svelte';
    import ChannelList from '../lib/ChannelList.svelte';
    import CreateChannelForm from '../lib/CreateChannelForm.svelte';
    import LogIn from '../lib/LogIn.svelte';
    import LogOut from '../lib/LogOut.svelte';
    import MessageInput from '../lib/MessageInput.svelte';

    let user;
    let loading = true;

    currentUser.subscribe((value) => {
        user = value;
    });

	onMount(async () => {
        try {
            let response = await boot();
            switch (response.status) {
                case 200:
                    currentUser.update(() => ({
                        username: response.data.login.name,
                    }));
                    subscribeToEvents();
                    break;
                case 401:
                    currentUser.update(() => null);
                    break;
                default:
                    // TODO: display error.
                    break;
            }
        } catch (_) {
            // I don't want exceptions on non-200 series responses, dammit.
        }
        loading = false;
	});
</script>

{#if loading}
    <h2>Loading&hellip;</h2>
{:else if user != null}
    <LogOut />
    <div id="interface">
        <div>
            <ChannelList />
        </div>
        <div>
            <ActiveChannel />
        </div>
        <div>
            <CreateChannelForm />
        </div>
        <div>
            <MessageInput />
        </div>
    </div>
{:else}
    <LogIn />
{/if}

<style>
    #interface {
        height: 90%;
        margin: 1rem;
        display: grid;
        grid-template-columns: 18rem auto;
        grid-template-rows: auto 2rem;
        grid-gap: 0.25rem;
    }
    #interface div {
        border: 1px solid grey;
    }
</style>
