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cloud-reader/docs/frontend/001-customizable-mobile-reading-experience.md
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crisleo94 6b4c0c43f8 feat: uv config other feats
- add uv configuration for the backend
- update frontend to make auth work
- add new auth endpoints
- add bookmars feat
- add reader feat
2026-06-03 22:06:01 -05:00

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# US: Customizable Mobile Reading Experience
**Issue:** https://gitea-dev.codescripters.org/HermesFactory/cloud-reader/issues (TBD)
## Overview
Add a full-screen reading view for ebooks with customizable typography, themes,
table of contents navigation, and orientation support. Mobile-first, responsive
design that adapts to any screen size.
---
## Backend Specification
### New Models
#### `apps.books.models.Chapter`
| Field | Type | Notes |
|-------------|--------------------|--------------------------------|
| id | AutoField (PK) | |
| book | FK -> Book | related_name="chapters" |
| title | CharField(512) | Chapter title |
| number | PositiveIntegerField | Chapter ordering / TOC index |
| content | TextField | Chapter text/markdown content |
| created_at | DateTimeField | auto_now_add |
| updated_at | DateTimeField | auto_now |
**Constraints:** UniqueConstraint(book, chapter_number)
**Ordering:** [book, number]
**Index:** FK to book with db_index
#### `apps.books.models.ReadingProgress`
| Field | Type | Notes |
|------------------|--------------------|--------------------------------|
| id | AutoField (PK) | |
| user | FK -> User | related_name="reading_progress"|
| book | FK -> Book | related_name="reading_progress"|
| current_chapter | PositiveIntegerField | Last chapter number |
| current_position | PositiveIntegerField | Position within chapter (paragraph) |
| percentage | FloatField | 0.0 - 100.0 overall progress |
| updated_at | DateTimeField | auto_now |
**Constraints:** UniqueConstraint(user, book)
**Indexes:** (user, book) composite, (user) filter for list queries
#### `apps.reader.models.ReadingSettings`
New app `apps/reader/` for reading preferences, isolated from book data model.
| Field | Type | Notes |
|-------------------|--------------------|-------------------------------|
| id | AutoField (PK) | |
| user | OneToOneField -> User | related_name="reading_settings" |
| font_family | CharField(32) | "sans-serif", "serif", "monospace" |
| font_size | PositiveSmallIntegerField | 12-32, default 18 |
| line_height | FloatField | 1.2 - 2.0, default 1.6 |
| margin_width | PositiveSmallIntegerField | 8-48, default 16 (px) |
| background_color | CharField(7) | Hex color, default "#f5f0eb" |
| text_color | CharField(7) | Hex color, default "#1a1a1a" |
| brightness | PositiveSmallIntegerField | 0-100, default 100 |
| orientation_lock | CharField(16) | "auto", "portrait", "landscape" |
| theme | CharField(32) | "sepia", "dark", "light", "paper" |
| created_at | DateTimeField | auto_now_add |
| updated_at | DateTimeField | auto_now |
### New API Endpoints
All under `/api/` prefix, authenticated with JWT.
#### Reader Settings (`/api/reader/settings/`)
| Method | URL | Action |
|--------|------------------------------|---------------------------|
| GET | /api/reader/settings/ | Get current user settings |
| PUT | /api/reader/settings/ | Create/update settings |
| PATCH | /api/reader/settings/ | Partial update settings |
- Single-object endpoint (one settings record per user, auto-created on first GET)
- Validation: font_size 12-32, line_height 1.2-2.0, margin_width 8-48
#### Reading Progress (`/api/books/{id}/progress/`)
| Method | URL | Action |
|--------|----------------------------------------|------------------------------|
| GET | /api/books/{id}/progress/ | Get reading progress for book|
| PUT | /api/books/{id}/progress/ | Create/update reading progress|
- Nested under book detail
- Auto-creates progress record on first PUT
#### Chapters (`/api/books/{id}/chapters/`)
| Method | URL | Action |
|--------|----------------------------------------|------------------------------|
| GET | /api/books/{id}/chapters/ | List chapters for book (TOC) |
| GET | /api/books/{id}/chapters/{number}/ | Get specific chapter content |
- Ordering by `number`
- Used by frontend TOC sidebar and content loading
---
## Frontend Specification
### New Pages
#### `/reader/:bookId` — ReadingPage
Full-screen reading view with:
- Chapter content display (left/right swiping or scroll)
- Bottom toolbar: TOC toggle, Settings toggle, Progress indicator
- Top bar: Back button, Book title, Chapter title
- Swipe/tap/page navigation between chapters
### New Components
#### `ReaderToolbar`
- Fixed bottom toolbar
- TOC button (opens TOC drawer)
- Settings/theme button (opens settings panel)
- Progress bar showing overall reading progress
#### `TableOfContents`
- Slide-in drawer from left
- Lists all chapters with current chapter highlighted
- Tap on chapter to navigate
- Shows reading progress per chapter
#### `ReadingSettingsPanel`
- Slide-in drawer from right (or bottom sheet on mobile)
- Controls:
- Theme presets: Sepia, Dark, Light, Paper
- Font family: Sans-serif, Serif, Monospace
- Font size slider (12-32)
- Line height slider (1.2-2.0)
- Margin/padding control
- Orientation lock toggle (Auto / Portrait / Landscape)
- All changes persist immediately via API
- LocalStorage fallback when offline
### New Hooks
#### `useReadingSettings(bookId)`
- Fetches user reading settings from API
- Returns current settings + update function
- Applies CSS custom properties to document root
- Falls back to defaults if API unavailable
#### `useChapters(bookId)`
- Fetches chapter list for TOC
- Returns chapters array, current chapter, navigate function
- Prefetches next/prev chapter content
#### `useReadingProgress(bookId)`
- Fetches/updates reading progress
- Auto-saves position on chapter change and periodic interval
### New Types
```typescript
interface Chapter {
id: number;
book: number;
title: string;
number: number;
content?: string; // Only present when fetching individual chapter
}
interface ChapterSummary {
id: number;
book: number;
title: string;
number: number;
}
interface ReadingSettings {
font_family: "sans-serif" | "serif" | "monospace";
font_size: number;
line_height: number;
margin_width: number;
background_color: string;
text_color: string;
brightness: number;
orientation_lock: "auto" | "portrait" | "landscape";
theme: "sepia" | "dark" | "light" | "paper";
}
interface ReadingProgress {
current_chapter: number;
current_position: number;
percentage: number;
updated_at: string;
}
```
### CSS / Theming
Reading view uses CSS custom properties driven by reading settings:
```css
:root {
--reader-bg: var(--bg-color, #f5f0eb);
--reader-text: var(--text-color, #1a1a1a);
--reader-font-family: var(--font-family, "Georgia", serif);
--reader-font-size: var(--font-size, 18px);
--reader-line-height: var(--line-height, 1.6);
--reader-margin: var(--margin-width, 16px);
}
```
Three theme presets:
- **Sepia**: `bg:#f5f0eb`, `text:#1a1a1a` — warm, easy on eyes
- **Dark**: `bg:#1a1a2e`, `text:#e0e0e0` — for low-light reading
- **Light**: `bg:#ffffff`, `text:#1a1a1a` — crisp and clean
- **Paper**: `bg:#e8e0d4`, `text:#2c2c2c` — book-like feel
### Orientation Support
- CSS `@media (orientation: portrait)` and `@media (orientation: landscape)` breakpoints
- Reading settings panel includes orientation lock toggle
- On mobile, landscape mode expands content horizontally with wider margins
- Portrait mode stacks controls vertically for thumb-reachable UI
### Routing
Add to App.tsx:
```
/ → LibraryPage
/books/:bookId → BookDetailPage
/reader/:bookId → ReadingPage
```
---
## Implementation Order
1. Backend models + migrations (Chapter, ReadingProgress, ReadingSettings)
2. Backend serializers + views + URLs
3. Frontend types + API client
4. Frontend hooks (useReadingSettings, useChapters, useReadingProgress)
5. Frontend components (ReadingSettingsPanel, TableOfContents, ReaderToolbar)
6. Frontend page (ReadingPage)
7. Routing updates
8. CSS / theming