# Finished Books — Episode Playlist Feature

## Goal
Add a proper **Finished Books** section where completed book studies live with a full ordered episode playlist. The Downloads page gets a minor label/copy update (Option A). A single "End Current Series" button in admin handles the full book transition in one step.

---

## User Flow (Public Site)

1. User clicks **Finished Books** in the nav
2. Lands on `/finished` — grid of completed book cards (image, title, description)
3. Clicks a book → `/finished/:id` — sees all episodes in numbered order, each with a player
4. Breadcrumb: `Finished Books → Titus`

**Episode Highlights** on the Episodes page only ever shows picks from the current book. When a book ends, highlights are cleared and replaced with picks from the new series automatically (see transition workflow below).

---

## Book Transition Workflow — "End Current Series" Button

A single button in admin (lives on the Current Series tab) that does all three transition steps at once:

### What it does
1. **Creates a Finished Book entry** from the current series data (title, image, description, season number) — immediately appears on `/finished`
2. **Clears Episode Highlights** — wipes `podcastFeaturedLinks` so the old season's picks are gone
3. **Opens a guided form** for the new series — prompts for new series title, image URL, and season number before saving

### The form flow
- User clicks **"End Current Series & Start New Book"**
- A confirmation modal appears with a summary: "This will archive [Titus] to Finished Books and clear Episode Highlights."
- Below the confirmation, a small form: New Series Title, New Series Image, New Season Number
- User fills it in and hits **Confirm**
- All three changes save together as one content update

### What the user still does manually after
- Go to Episode Highlights and add 3–5 hand-picked episodes from the new series (the section is now empty and ready)

---

## Changes Required

### 1. `server/routes/episodes.js` — Parse `itunes:season` from RSS
One line added to `parseRssItems` alongside the existing `itunes:episode` extraction:
```js
const season = (/<itunes:season>([\s\S]*?)<\/itunes:season>/.exec(block)?.[1] ?? '').trim()
```
Include `season` in the returned episode object.

### 2. `src/content.ts` — New `FinishedBook` type + field on `SiteContent`
Clean, purpose-built interface:
```ts
export interface FinishedBook {
  id: string
  title: string
  description: string
  imageUrl: string
  season: number
}
```
Add `finishedBooks: FinishedBook[]` to `SiteContent` with default `[]`.

### 3. `src/App.tsx` — New `useEpisodesForBook` hook
Fetches `/api/episodes/all` and filters by season number, sorted ascending:
```js
const filtered = (data.episodes ?? [])
  .filter(ep => ep.season === String(book.season))
  .sort((a, b) => parseInt(a.episode) - parseInt(b.episode))
```

### 4. `src/App.tsx` — Nav: "Episodes" dropdown replacing flat link

"Episodes" becomes a dropdown parent with two children: **Current Series** (`/episodes`) and **Finished Books** (`/finished`). The flat `<NavLink to="/episodes">` is replaced with a dropdown component. Everything else in the nav stays flat and unchanged.

**Desktop behavior:**
- "Episodes ▾" shows on hover (or focus), revealing a small popover menu below with the two links
- Parent label stays gold/active when either child route is active
- Implemented with CSS `:hover` + `:focus-within` on a wrapper — no JS state needed for desktop

**Mobile behavior (under ~540px):**
- The mobile nav already collapses to a full-width vertical list with `max-height` animation
- "Episodes" becomes a top-level row with an expand arrow (chevron)
- Tapping it toggles a sub-list showing "Current Series" and "Finished Books" indented beneath it
- Implemented with a small React `useState` toggle on the dropdown item — consistent with how `menuOpen` already works
- Sub-items get slightly smaller text and left padding to show hierarchy
- The `max-height: 500px` on `.header-nav--open` will need to increase to `600px` to accommodate the expanded sub-items

**New elements needed:**
- `NavDropdown` component (or inline JSX) wrapping the two episode links
- CSS classes: `.nav-dropdown`, `.nav-dropdown-menu`, `.nav-dropdown-item`, `.nav-dropdown--open` (mobile only)
- Mobile sub-item styles: indented, smaller text, no bottom border on last child before parent closes

**Footer:** Add a flat "Finished Books" link alongside the existing footer nav links — no dropdown needed there.

### 5. `src/App.tsx` — Two new routes
```tsx
<Route path="/finished" element={<FinishedBooksPage content={content} />} />
<Route path="/finished/:id" element={<FinishedSeriesPage content={content} />} />
```

### 6. `src/App.tsx` — Two new page components

**`FinishedBooksPage`** — grid of `finishedBooks` cards (image, title, description), each linking to `/finished/:id`. Friendly empty state if no books yet.

**`FinishedSeriesPage`** — uses `useEpisodesForBook`, renders episodes sorted ascending by episode number as a numbered playlist. Each row: episode number, title, duration, `EpisodeAudioPlayer`.

### 7. `src/AdminPage.tsx` — "End Current Series" button on Current Series tab
- Button labeled **"End Current Series & Start New Book"**
- Opens an inline confirmation + new series form (not a browser `confirm()` — a proper UI panel)
- On confirm: creates `FinishedBook` from current series data, clears `podcastFeaturedLinks`, updates series fields with new book info
- All saved as one atomic content update

### 8. `src/AdminPage.tsx` — Finished Books management section
Separate tab for viewing and managing the finished books list (in case you need to edit or remove one):
- Shows each finished book as a collapsible card
- Edit title, description, image, season number
- Remove button
- "Add Finished Book" button for manually adding one without going through the transition wizard

### 9. CSS — Playlist and finished books grid styles
Reuse existing episode-list and episode-card patterns where possible.

### 10. `src/App.tsx` — Downloads page copy tweak (Option A, low priority)
Minor label changes only — no structural change:
- Eyebrow becomes "Current Study"
- Heading becomes `{content.seriesTitle} — Study Guide`
- Everything else (download form, Amazon button, library) stays identical

---

## Prerequisite — Verify RSS Season Tags
Before starting, confirm Titus episodes have `<itunes:season>` tags and what number they use:
```
curl -s https://anchor.fm/s/11068d290/podcast/rss | grep -o '<itunes:season>[^<]*</itunes:season>' | head -5
```
If seasons are missing from the RSS, the fallback is an `episodeRange: { from, to }` field on `FinishedBook` instead of `season`.

---

## Files Touched Summary
| File | What changes |
|---|---|
| `server/routes/episodes.js` | Parse `itunes:season` into episode objects |
| `src/content.ts` | New `FinishedBook` interface + `finishedBooks` field on `SiteContent` |
| `src/App.tsx` | New hook, nav links, 2 routes, 2 page components, Downloads copy tweak |
| `src/AdminPage.tsx` | "End Current Series" transition button + Finished Books management tab |
| CSS | Playlist page + finished books grid styles |

---

## Order of Work
1. Run the RSS curl check to confirm season tags (5 min)
2. `content.ts` — add `FinishedBook` type and `finishedBooks` field
3. `server/routes/episodes.js` — parse season from RSS
4. Admin — "End Current Series" transition button + Finished Books management tab
5. Public pages — nav link, routes, `FinishedBooksPage`, `FinishedSeriesPage`
6. Downloads copy tweak (last, lowest priority)
