1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
<script lang="ts">
// Thin composition: wires feature modules + injected effects. No business
// logic here — download folds events via logic.ts; library renders via
// LibraryView over its own pure logic.ts; the segment editor is a thin
// component over its pure edit reducers (segment-editor/logic.ts).
import type {
AudioFormat,
ConfirmDraftRequest,
JobEvent,
JobMode,
WsServerMessage,
} from "@yt-music/contract";
import { createLibraryApi } from "./adapters/libraryApi.js";
import { createMetadataApi } from "./adapters/metadataApi.js";
import { createSettingsApi } from "./adapters/settings.js";
import { createWsClient } from "./adapters/ws.js";
import { INITIAL, reduce, statusLabel } from "./features/download/logic.js";
import type { DownloadState } from "./features/download/logic.js";
import LibraryView from "./features/library/LibraryView.svelte";
import SegmentEditor from "./features/segment-editor/SegmentEditor.svelte";
import { reduce as reduceDraft, type EditAction } from "./features/segment-editor/logic.js";
import SettingsView from "./features/settings/SettingsView.svelte";
let url = $state("");
let mode = $state<JobMode>("single");
let format = $state<AudioFormat>("mp3");
let dl = $state(INITIAL) as DownloadState;
let jobId = $state(null as string | null);
let confirming = $state(false);
const ws = createWsClient(`${location.protocol === "https:" ? "wss:" : "ws:"}//${location.host}/ws`);
const libraryApi = createLibraryApi();
const metadataApi = createMetadataApi();
const settingsApi = createSettingsApi();
type View = "download" | "library" | "settings";
let view = $state<View>("download");
// Editing is active once the backend delivers a draft and before it is
// confirmed (status then advances to cutting/done via WS events).
let editing = $derived(dl.status === "editing" && dl.draft !== null);
// Set up WS in $effect (runs after mount — avoids circular type inference).
$effect(() => {
ws.connect();
return ws.onMessage((msg: WsServerMessage) => {
if (msg.type === "event" && msg.jobId === jobId) {
dl = reduce(dl, msg.event as JobEvent);
}
});
});
async function startDownload() {
if (!url.trim()) return;
dl = { ...INITIAL };
confirming = false;
const res = await fetch("/api/jobs", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ url: url.trim(), mode, format }),
});
if (!res.ok) {
dl = { ...INITIAL, status: "failed", error: `create job failed: ${res.status}` };
return;
}
const data = (await res.json()) as { jobId: string };
jobId = data.jobId;
ws.subscribe(data.jobId);
}
// Apply one pure edit reducer over the draft (composition root owns state).
function editDraft(action: EditAction) {
if (dl.draft) {
dl.draft = reduceDraft(dl.draft, action);
}
}
// Confirm the user-edited CutDraft → backend derives the CutPlan and cuts.
async function confirmDraft() {
if (!dl.draft || !jobId || confirming) return;
confirming = true;
try {
const res = await fetch(`/api/jobs/${jobId}/confirm`, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ draft: dl.draft } satisfies ConfirmDraftRequest),
});
if (!res.ok) {
dl = { ...dl, status: "failed", error: `confirm failed: ${res.status}` };
}
// success → status advances to cutting via WS events
} catch (err) {
dl = { ...dl, status: "failed", error: err instanceof Error ? err.message : String(err) };
} finally {
confirming = false;
}
}
function cancelEdit() {
dl = { ...INITIAL };
jobId = null;
confirming = false;
}
</script>
<main class="min-h-screen bg-base-200 p-8">
<div class="mx-auto max-w-2xl space-y-6">
<header>
<h1 class="text-3xl font-bold text-base-content">yt-music-dl</h1>
<p class="text-base-content/60">Download YouTube audio for your Walkman</p>
</header>
<!-- View switcher -->
<div role="tablist" class="tabs tabs-boxed">
<button
role="tab"
class="tab"
class:tab-active={view === "download"}
onclick={() => (view = "download")}>Download</button
>
<button
role="tab"
class="tab"
class:tab-active={view === "library"}
onclick={() => (view = "library")}>Library</button
>
<button
role="tab"
class="tab"
class:tab-active={view === "settings"}
onclick={() => (view = "settings")}>Settings</button
>
</div>
{#if view === "download"}
<!-- Download form -->
<div class="card bg-base-100 shadow">
<div class="card-body gap-3">
<div class="join w-full">
<input
class="input join-item flex-1"
placeholder="Paste a YouTube URL…"
value={url}
oninput={(e) => (url = e.currentTarget.value)}
onkeydown={(e) => e.key === "Enter" && startDownload()}
/>
<button class="btn btn-primary join-item" onclick={startDownload}>
Download
</button>
</div>
<div class="flex gap-3">
<label class="form-control flex-1">
<span class="label-text mb-1 text-xs">Mode</span>
<select
class="select select-sm"
value={mode}
onchange={(e) => (mode = e.currentTarget.value as JobMode)}
>
<option value="single">Single track</option>
<option value="split-by-chapters">Split by chapters</option>
</select>
</label>
<label class="form-control flex-1">
<span class="label-text mb-1 text-xs">Format</span>
<select
class="select select-sm"
value={format}
onchange={(e) => (format = e.currentTarget.value as AudioFormat)}
>
<option value="mp3">MP3</option>
<option value="flac">FLAC</option>
</select>
</label>
</div>
</div>
</div>
<!-- Segment editor (split-by-chapters editing phase) -->
{#if editing && dl.draft}
<SegmentEditor
draft={dl.draft}
metadataApi={metadataApi}
onaction={editDraft}
onconfirm={confirmDraft}
oncancel={cancelEdit}
submitting={confirming}
/>
{/if}
<!-- Live progress -->
{#if jobId && !editing}
<div class="card bg-base-100 shadow">
<div class="card-body gap-3">
<div class="flex items-center justify-between">
<h2 class="card-title text-lg">{dl.title || "Fetching…"}</h2>
<span class="badge badge-lg" data-status={dl.status}>
{statusLabel(dl.status)}
</span>
</div>
{#if dl.status === "downloading" || dl.status === "cutting"}
<progress
class="progress progress-primary w-full"
value={dl.pct}
max="100"
></progress>
<div class="flex justify-between text-sm text-base-content/60">
<span>{dl.pct.toFixed(1)}%</span>
<span>{dl.speed}</span>
<span>ETA: {dl.eta}</span>
</div>
{/if}
{#if dl.status === "done"}
<div class="alert alert-success">
<span>Downloaded {dl.files.length} file(s)</span>
</div>
<ul class="text-sm text-base-content/70">
{#each dl.files as f}
<li class="font-mono">{f}</li>
{/each}
</ul>
{/if}
{#if dl.status === "failed"}
<div class="alert alert-error">
<span>{dl.error}</span>
</div>
{/if}
</div>
</div>
{/if}
{:else if view === "library"}
<LibraryView api={libraryApi} metadataApi={metadataApi} />
{:else if view === "settings"}
<SettingsView api={settingsApi} />
{/if}
</div>
</main>
|
