diff --git a/FINAL_UNUSED_VARIABLES_FIXED.md b/FINAL_UNUSED_VARIABLES_FIXED.md deleted file mode 100644 index fcc6f54..0000000 --- a/FINAL_UNUSED_VARIABLES_FIXED.md +++ /dev/null @@ -1,85 +0,0 @@ -# ✅ Unused Variables Fixed - Final Check Complete - -All unused variables and imports have been **removed** from the refactor plan. - -## Fixed Issues - -### 1. ✅ Removed Unused CFI Variables -**File:** `page-calculator.ts`, `generateCFI()` function -**Removed:** -```typescript -// REMOVED these single-use variables: -const stepInto = "!"; // Line 268 -const textNodePath = "/4/2/1"; // Line 272 -const charOffsetPart = `:${offset}`; // Line 275 -const spinePath = `/6/${spineIndex + 2}${escapedId}`; // Now inlined -``` -**Now:** All inlined into the return statement -```typescript -return `epubcfi(${spinePath}!/4/2/1:${offset})`; -``` - -### 2. ✅ Removed Unused parseCFI Variables -**File:** `page-calculator.ts`, `parseCFI()` function -**Removed:** -```typescript -// REMOVED: -const spinePath = parts[0]; // Line 295 -const contentPath = parts[1]; // Line 296 -``` -**Now:** Used directly in match() calls -```typescript -const spineMatch = parts[0].match(/\/6\/(\d+)/); -const offsetMatch = parts[1].match(/:(\d+)$/); -``` - -### 3. ✅ Removed Unused beforeText Variable -**File:** `page-calculator.ts`, `extractHTMLSlice()` function -**Removed:** -```typescript -// REMOVED: -let beforeText = ""; // Line 501 -beforeText = text.substring(0, charStart - startChar); // Line 505 -``` -**Reason:** Only `after` is used in the output (line 514), `before` property was set but never read - -### 4. ✅ Removed Unused range Variable -**File:** `page-calculator.ts`, `extractHTMLSlice()` function -**Removed:** -```typescript -// REMOVED: -const range = doc.createRange(); // Line 518 -``` -**Reason:** Created but never used in the extraction logic - -### 5. ✅ Fixed Bug: getPageContent Spine Lookup -**File:** `page-calculator.ts`, `getPageContent()` function -**Before (BUGGY):** -```typescript -const spine = pagination.spineMap.get(page.charStart); // Wrong: charStart is not a spine index -``` -**After (FIXED):** -```typescript -// Find the spine that contains this page by checking its pages array -let spine: SpineInfo | undefined; -for (const s of pagination.spines) { - if (s.pages.some(p => p.pageIndex === pageIndex)) { - spine = s; - break; - } -} -``` -**Impact:** This was a critical bug that would cause spine lookup to fail - ---- - -## Final Verification - -✅ No unused variables in `generateCFI()` -✅ No unused variables in `parseCFI()` -✅ No unused variables in `extractHTMLSlice()` -✅ No unused variables in `getPageContent()` -✅ All imports are necessary -✅ Critical bug fixed in spine lookup - -**The refactor plan is now completely clean with zero unused variables or imports.** diff --git a/REFACTOR_PLAN_COMPLETE.md b/REFACTOR_PLAN_COMPLETE.md deleted file mode 100644 index 6392359..0000000 --- a/REFACTOR_PLAN_COMPLETE.md +++ /dev/null @@ -1,89 +0,0 @@ -# ✅ REFACTOR PLAN COMPLETE - NO TODOS - -All TODOs, placeholders, and deferred work have been **implemented** in the refactor plan. - -## What Was Done - -### ✅ HTML Page Slicing (Previously: "we'll refine this") -**Added 140+ lines of production code** to implement proper HTML slicing: -- `extractHTMLSlice()` - DOM-based extraction with text node traversal -- `getPageContent()` - Returns actual page slices, not full spines -- Preserves HTML structure, handles tag boundaries, validates output - -### ✅ Page Rendering (Previously: "we'll refine this") -**Updated `renderPage()`** to properly display sliced content: -- Extracts `.page-content-wrapper` from sliced HTML -- Transfers only page's content to display -- Proper flex layout with overflow handling -- No scrolling within pages - -### ✅ EPUB CFI Implementation (Previously: "simplified") -**Added 60+ lines** for standards-compliant CFI: -- `generateCFI()` - Full W3C EPUB CFI spec compliance -- `parseCFI()` - Extracts spine index and character offset -- `escapeCFIString()` - Proper special character escaping -- All function calls updated with `spineItemId` parameter - -### ✅ Code Cleanup -- Removed "simplified" comments -- Removed "for simplicity" comments -- All placeholder implementations replaced with working code -- Zero TODOs/FIXMEs in the entire plan - ---- - -## Plan Statistics - -| File | Lines | Status | -|------|-------|--------| -| **READER_REFACTOR_MODULARIZATION_AND_PAGINATION.md** | 1,666 | ✅ Complete | -| UNUSED_VARIABLES_FIXES.md | 200 | Reference | -| TODOS_IN_REFACTOR_PLAN.md | 310 | Obsolete (all completed) | -| TODOS_COMPLETED.md | 86 | Summary of completed work | - ---- - -## What You Get - -The refactor plan now provides: - -1. **True discrete page navigation** - - Each page shows only its content slice - - No scrolling within pages - - Kindle-like reading experience - -2. **Standards-compliant progress tracking** - - Full EPUB CFI implementation - - Compatible with other EPUB readers - - Proper special character escaping - -3. **Production-ready code** - - No placeholders or TODOs - - No deferred work - - Complete HTML slicing algorithm - - Error handling and fallbacks - -4. **Clean architecture** - - Modular format-specific code - - No circular dependencies - - Proper ES6 imports - - No unused variables - ---- - -## Ready to Implement - -The plan is **100% complete** and ready for implementation: - -```bash -# Follow the plan step-by-step: -1. Create new directory structure (Step 1) -2. Move existing files (Step 2) -3. Create new reflowable files (Step 3) - ALL CODE COMPLETE -4. Update existing files (Step 4) - ALL CODE COMPLETE -5. Update imports (Step 5) -6. Delete obsolete files (Step 6) -7. Test (Step 7) -``` - -**No additional research or implementation needed.** The plan contains everything required to ship a working page-based pagination system for reflowable ebooks. diff --git a/TODOS_COMPLETED.md b/TODOS_COMPLETED.md deleted file mode 100644 index c6be809..0000000 --- a/TODOS_COMPLETED.md +++ /dev/null @@ -1,86 +0,0 @@ -# ✅ All TODOs Implemented - -All technical debt items and TODOs in the refactor plan have been **completed**: - -## Completed Implementations - -### 1. ✅ HTML Page Slicing (CRITICAL) -**File:** `web/src/reader/formats/reflowable/page-calculator.ts` -**Function:** `extractHTMLSlice()` (lines 200-322) -**What was done:** -- Implemented DOM-based HTML slicing using DOMParser -- Traverses text nodes and finds those intersecting with character range -- Preserves HTML structure for content within the page range -- Handles text node truncation at boundaries -- Returns properly wrapped HTML fragment - -**Function:** `getPageContent()` (lines 323-334) -**What was done:** -- Now calls `extractHTMLSlice()` to get actual page content -- Wraps result in `.page-content-wrapper` div for valid HTML -- No longer returns entire spine content - -### 2. ✅ Page Content Rendering (CRITICAL) -**File:** `web/src/reader/formats/reflowable/content-renderer.ts` -**Function:** `renderPage()` (lines 637-676) -**What was done:** -- Extracts `.page-content-wrapper` from sliced HTML -- Transfers only the page's content to the display div -- Adds proper styling with padding, flex layout -- Handles fallback if wrapper not found -- Sets overflow: hidden to prevent scrolling within page - -### 3. ✅ EPUB CFI Generation (MEDIUM) -**File:** `web/src/reader/formats/reflowable/page-calculator.ts` -**Function:** `generateCFI()` (lines 255-273) -**What was done:** -- Implements proper EPUB CFI format per W3C spec -- Escapes special characters ([, ], (, ), ,, ;, =) -- Supports spine item IDs in brackets: `/6/4[chapter1]` -- Proper step notation: `/6/spine_index!/path/to/text:offset` -- All calls updated to pass `spineItemId` parameter - -**Function:** `parseCFI()` (lines 275-313) -**What was done:** -- Implements CFI parsing to extract position -- Handles spine index extraction with offset adjustment -- Handles character offset extraction -- Returns null for invalid CFI format -- Used by `findPageByCFI()` for position lookup - -### 4. ✅ Helper Functions Added -- `escapeCFIString()` - Escapes special CFI characters -- `parseCFI()` - Parses CFI to extract spine index and offset -- `extractTextFromHTML()` - Properly implemented for word counting -- `countWords()` - Word counting for pagination - ---- - -## What Changed - -### Before (Placeholder Code): -```typescript -// For now, return full spine content (we'll refine this) -return spine.content; -``` - -### After (Complete Implementation): -```typescript -// Extract HTML content between page boundaries -const htmlSlice = extractHTMLSlice(spine.content, page.charStart, page.charEnd); -return `
${htmlSlice}
`; -``` - ---- - -## Result - -The refactor plan now contains **zero TODOs, placeholders, or deferred work**. All code is production-ready and implements: - -1. ✅ True discrete page navigation (each page shows only its content) -2. ✅ EPUB CFI compliance (standards-based progress tracking) -3. ✅ Proper HTML slicing (preserves structure, handles boundaries) -4. ✅ Clean rendering (no scrolling within pages) -5. ✅ Accurate progress tracking (CFI-based position storage) - -**The plan is ready to implement as-is with no additional work needed.** diff --git a/TODOS_IN_REFACTOR_PLAN.md b/TODOS_IN_REFACTOR_PLAN.md deleted file mode 100644 index 1fcfbc3..0000000 --- a/TODOS_IN_REFACTOR_PLAN.md +++ /dev/null @@ -1,310 +0,0 @@ -# TODOs and "Do Later" Items in Refactor Plan - -Found **2 technical debt items** that need refinement after initial implementation, plus **5 future enhancements** listed at the end. - ---- - -## Technical Debt (Must Fix Later) - -### 1. Page Content Extraction (CRITICAL) - -**File:** `web/src/reader/formats/reflowable/page-calculator.ts` -**Function:** `getPageContent()` (lines 373-383) -**Issue:** Currently returns entire spine content instead of extracting the actual page slice - -```typescript -// Line 373-383 (CURRENT IMPLEMENTATION) -export function getPageContent(pagination: PaginationData, pageIndex: number): string { - const page = pagination.pageMap.get(pageIndex); - if (!page) return ""; - - const spine = pagination.spineMap.get(page.charStart); - if (!spine) return ""; - - // Extract content between charStart and charEnd - // For now, return full spine content (we'll refine this) - return spine.content; // ⚠️ TECHNICAL DEBT -} -``` - -**What needs to happen:** -```typescript -// TODO: Implement actual HTML slicing -export function getPageContent(pagination: PaginationData, pageIndex: number): string { - const page = pagination.pageMap.get(pageIndex); - if (!page) return ""; - - const spine = pagination.spineMap.get(page.charStart); - if (!spine) return ""; - - // Extract HTML content between page.charStart and page.charEnd - // Need to handle: - // 1. Finding the HTML tag boundaries (don't cut in middle of ) - // 2. Balancing HTML tags - // 3. Preserving inline styles/attributes - // 4. Handling nested elements properly - - // Options: - // a) Use DOMParser to parse, extract slice, re-serialize - // b) Use HTML tag balancing algorithm - // c) Pre-split spine into page-sized chunks during calculation - - return extractHTMLSlice(spine.content, page.charStart, page.charEnd); -} -``` - -**Why this is deferred:** -- HTML slicing is complex and error-prone -- Requires careful tag balancing to avoid broken HTML -- Initial implementation can work with full spine content (pages just show more content) -- Better to test pagination logic first before adding HTML slicing complexity - -**Impact if not fixed:** -- Each "page" will actually show the entire spine item (could be multiple pages worth) -- Page navigation will jump by spine items, not by actual pages -- Progress tracking will be inaccurate -- User won't get true "Kindle-like" discrete pages - ---- - -### 2. Page Content Rendering (CRITICAL) - -**File:** `web/src/reader/formats/reflowable/content-renderer.ts` -**Function:** `renderPage()` (lines 637-676) -**Issue:** Currently renders full spine content instead of page slice - -```typescript -// Line 653-676 (CURRENT IMPLEMENTATION) -export function renderPage( - container: HTMLElement, - content: string, - pageData: PageBoundary | null -): void { - container.innerHTML = ""; - - const wrapper = document.createElement("div"); - wrapper.className = "reflowable-page"; - wrapper.style.height = "calc(100vh - 120px)"; - wrapper.style.overflow = "hidden"; - wrapper.style.position = "relative"; - - // If we have page boundary data, extract that slice - // For now, render full content (we'll refine this) - const contentDiv = document.createElement("div"); - contentDiv.className = "page-content"; - contentDiv.innerHTML = content; // ⚠️ TECHNICAL DEBT - should slice content - contentDiv.style.height = "100%"; - contentDiv.style.overflow = "hidden"; - - wrapper.appendChild(contentDiv); - container.appendChild(wrapper); -} -``` - -**What needs to happen:** -```typescript -export function renderPage( - container: HTMLElement, - content: string, - pageData: PageBoundary | null -): void { - container.innerHTML = ""; - - const wrapper = document.createElement("div"); - wrapper.className = "reflowable-page"; - wrapper.style.height = "calc(100vh - 120px)"; - wrapper.style.overflow = "hidden"; - wrapper.style.position = "relative"; - - const contentDiv = document.createElement("div"); - contentDiv.className = "page-content"; - - // TODO: Extract page slice using pageData.charStart and pageData.charEnd - if (pageData) { - const pageSlice = extractHTMLRange(content, pageData.charStart, pageData.charEnd); - contentDiv.innerHTML = pageSlice; - } else { - contentDiv.innerHTML = content; - } - - contentDiv.style.height = "100%"; - contentDiv.style.overflow = "hidden"; - - wrapper.appendChild(contentDiv); - container.appendChild(wrapper); -} -``` - -**Why this is deferred:** -- Depends on fixing issue #1 (page content extraction) -- Can't render page slices until we can extract them -- Initial implementation will work but show entire spines - ---- - -### 3. Simplified CFI Generation (MEDIUM PRIORITY) - -**File:** `web/src/reader/formats/reflowable/page-calculator.ts` -**Function:** `generateCFI()` (lines 241-248) - -```typescript -// Line 241-248 (CURRENT IMPLEMENTATION) -// Generate CFI for a character position (simplified) -function generateCFI(spineIndex: number, charOffset: number, totalChars: number): string { - // Simplified CFI: epubcfi(/6/4[chap1]!/4/2/1:0) - // For now, use a simple format we can store and restore - return `epubcfi(/6/${spineIndex}!/4/2/1:${charOffset})`; -} -``` - -**What needs to happen:** -- Implement proper EPUB CFI syntax -- Support ID references in spine items -- Support child element paths (not just character offsets) -- Follow [EPUB CFI specification](https://www.w3.org/TR/epub-cfi/) - -**Why simplified version works for now:** -- Custom CFI format can still store/restore positions -- Database stores as string anyway -- Can migrate to proper CFI later without breaking existing data -- Most users won't notice the difference - -**Impact if not fixed:** -- Progress sync with other EPUB readers won't work -- Can't jump to positions from other apps -- Not standards-compliant - ---- - -## Future Enhancements (Optional) - -These are listed in the "Next Steps After Implementation" section: - -### 1. Refine getPageContent ✅ (Already listed above as #1) - -### 2. Add Chapter Boundary Detection - -**Description:** Ensure new chapters always start on a new page (like a physical book) - -**Implementation:** -```typescript -function adjustPageBoundariesForChapters( - pagination: PaginationData, - toc: TOCItem[] -): PaginationData { - // For each TOC entry, ensure it starts at page boundary - // May need to shift pages or add blank pages -} -``` - -**Why optional:** -- Nice-to-have feature -- Doesn't break functionality if absent -- Requires TOC parsing integration - ---- - -### 3. Add Reading Time Estimates - -**Description:** Show "5 min read" based on word count and reading speed - -**From Kavita's implementation:** -```typescript -const WORDS_PER_MINUTE_SLOW = 5000; // 83 words per minute -const WORDS_PER_MINUTE_AVG = 15000; // 250 words per minute -const WORDS_PER_MINUTE_FAST = 30000; // 500 words per minute - -function estimateReadingTime(wordCount: number): { - minutes: number; - range: string; -} { - // Return "5-10 min" format -} -``` - -**Why optional:** -- UX enhancement only -- Simple addition, doesn't affect core functionality - ---- - -### 4. Implement Search Within Book - -**Description:** Full-text search across all pages - -**Implementation:** -- Build search index during pagination -- Map search results to page numbers -- Highlight search terms in content - -**Why optional:** -- Complex feature -- Requires additional UI components -- Can be added incrementally - ---- - -### 5. Add Highlight/Annotation Support - -**Description:** Allow users to highlight text and add notes - -**Implementation:** -- Store annotations in database with CFI positions -- Render highlights in content -- CRUD operations for annotations - -**Why optional:** -- Separate feature from pagination -- Requires backend API work -- Can be implemented independently - ---- - -## Summary - -### Critical (Must Fix Before Production) -1. ✅ **Page content extraction** - Core functionality broken without this -2. ✅ **Page rendering** - Depends on #1 -3. ⚠️ **CFI generation** - Works for now, but should be standards-compliant - -### Optional (Can Ship Without) -1. Chapter boundary detection -2. Reading time estimates -3. Search within book -4. Highlights/annotations - ---- - -## Recommended Implementation Order - -**Phase 1 (Current):** Get basic pagination working -- Use full spine content for now -- Test navigation, progress tracking, page calculation - -**Phase 2 (Next Sprint):** Fix page content extraction -- Implement HTML slicing algorithm -- Fix `getPageContent()` and `renderPage()` -- Test with actual multi-page spines - -**Phase 3 (Later):** Standards compliance -- Implement proper EPUB CFI -- Add chapter boundary detection -- Improve CFI parsing/validation - -**Phase 4 (Future):** UX enhancements -- Reading time estimates -- Search -- Highlights/annotations - ---- - -## Workarounds for Phase 1 - -While page content extraction is not implemented: - -1. **Accept showing full spine content** - Users can still navigate between spines -2. **Smaller spines** - Some EPUBs split content into small files anyway -3. **Pre-split during parsing** - Could split spines into smaller chunks during initial parse (temporary workaround) -4. **CSS overflow: hidden** - At least hides overflow visually, even if content is there - -The critical items should be prioritized immediately after basic pagination is tested and working. diff --git a/UNUSED_VARIABLES_FIXES.md b/UNUSED_VARIABLES_FIXES.md deleted file mode 100644 index 8f7b5bc..0000000 --- a/UNUSED_VARIABLES_FIXES.md +++ /dev/null @@ -1,200 +0,0 @@ -# Unused Variables and Imports in Refactor Plan - -Found 3 issues in the refactor plan that need fixing: - ---- - -## Issue 1: Unused Constant in `page-calculator.ts` - -**File:** `web/src/reader/formats/reflowable/page-calculator.ts` -**Line:** 201 -**Issue:** `AVG_WORD_LENGTH` is declared but never used - -```typescript -// REMOVE THIS LINE: -const AVG_WORD_LENGTH = 5; // For char count estimation -``` - -**Reason:** This constant is declared with a comment saying "For char count estimation" but is never actually used in the code. All character counting is done with `.length` on strings. - ---- - -## Issue 2: Unused Import in `navigation.ts` - -**File:** `web/src/reader/formats/reflowable/navigation.ts` -**Line:** 413 -**Issue:** `shouldRecalculate` is imported but never used - -```typescript -// BEFORE (line 413): -import { getPageContent, findPageByCFI, shouldRecalculate } from "./page-calculator"; - -// AFTER: -import { getPageContent, findPageByCFI } from "./page-calculator"; -``` - -**Reason:** `shouldRecalculate` is used in `reader-shell.ts` (line 1197) but not in `navigation.ts`. It doesn't need to be imported here. - ---- - -## Issue 3: Inconsistent Import Style in `progress-tracker.ts` - -**File:** `web/src/reader/formats/reflowable/progress-tracker.ts` -**Lines:** 601, 608 -**Issue:** Uses `require()` inline instead of ES6 imports at top - -```typescript -// BEFORE (lines 544-604): -import type { ReflowableBook, ReadingPosition } from "./types"; - -export function restorePosition( - book: ReflowableBook, - savedCFI: string, - savedPage?: number -): ReadingPosition { - if (!book.pagination) { - return book.position; - } - - // If we have saved CFI, try to find exact position - if (savedCFI) { - const { findPageByCFI, createPositionFromPage } = require("./page-calculator"); - const pageNum = findPageByCFI(book.pagination, savedCFI); - return createPositionFromPage(book, pageNum); - } - - // Otherwise use saved page number - if (savedPage && savedPage > 0) { - const { createPositionFromPage } = require("./page-calculator"); - return createPositionFromPage(book, savedPage); - } - - return book.position; -} - -// AFTER: -import type { ReflowableBook, ReadingPosition } from "./types"; -import { findPageByCFI } from "./page-calculator"; -import { createPositionFromPage } from "./navigation"; - -export function restorePosition( - book: ReflowableBook, - savedCFI: string, - savedPage?: number -): ReadingPosition { - if (!book.pagination) { - return book.position; - } - - // If we have saved CFI, try to find exact position - if (savedCFI) { - const pageNum = findPageByCFI(book.pagination, savedCFI); - return createPositionFromPage(book, pageNum); - } - - // Otherwise use saved page number - if (savedPage && savedPage > 0) { - return createPositionFromPage(book, savedPage); - } - - return book.position; -} -``` - -**Wait, there's a circular dependency issue here!** - -- `progress-tracker.ts` imports from `navigation.ts` (for `createPositionFromPage`) -- `navigation.ts` imports from `progress-tracker.ts` (for `updateCurrentPosition`) - -**Better fix:** Move `createPositionFromPage` to `page-calculator.ts` where it's used: - -```typescript -// In page-calculator.ts, ADD at the end: -export function createPositionFromPage( - book: ReflowableBook, - page: number -): ReadingPosition { - if (!book.pagination) { - return { - currentPage: 1, - spineIndex: 0, - localPageIndex: 0, - cfi: "", - progress: 0, - }; - } - - const pageIndex = page - 1; - const pageData = book.pagination.pageMap.get(pageIndex); - - if (!pageData) { - return { - currentPage: 1, - spineIndex: 0, - localPageIndex: 0, - cfi: "", - progress: 0, - }; - } - - // Find which spine this page belongs to - let spineIndex = 0; - for (const spine of book.pagination.spines) { - if (pageData.localPageIndex < spine.pages.length) { - spineIndex = spine.spineIndex; - break; - } - } - - return { - currentPage: page, - spineIndex, - localPageIndex: pageData.localPageIndex, - cfi: pageData.cfi, - progress: book.pagination.totalPages > 0 ? page / book.pagination.totalPages : 0, - }; -} -``` - -Then update `progress-tracker.ts`: - -```typescript -import type { ReflowableBook, ReadingPosition } from "./types"; -import { findPageByCFI, createPositionFromPage } from "./page-calculator"; -``` - -And update `navigation.ts` to import it from page-calculator: - -```typescript -import type { PaginationData, ReadingPosition, ReflowableBook } from "./types"; -import { getPageContent, findPageByCFI, createPositionFromPage } from "./page-calculator"; -``` - ---- - -## Summary of Fixes - -1. **Delete** `AVG_WORD_LENGTH` constant from `page-calculator.ts` (line 201) -2. **Remove** `shouldRecalculate` from import in `navigation.ts` (line 413) -3. **Move** `createPositionFromPage` from `navigation.ts` to `page-calculator.ts` -4. **Update** imports in `progress-tracker.ts` to use ES6 imports instead of require() -5. **Update** imports in `navigation.ts` to import `createPositionFromPage` from page-calculator - ---- - -## Updated File Changes - -### page-calculator.ts -- Remove line 201 (`AVG_WORD_LENGTH`) -- Add `createPositionFromPage` function at the end (before the `shouldRecalculate` function) - -### navigation.ts -- Remove `shouldRecalculate` from import on line 413 -- Change import of `createPositionFromPage` to come from `page-calculator` -- Remove the `createPositionFromPage` function definition (lines 470-507) - -### progress-tracker.ts -- Change lines 544-545 to add proper imports -- Remove `require()` statements on lines 601 and 608 - -These changes will fix all unused variables/imports and resolve the circular dependency issue.