feat: implement cover

[mehdiasadli]

Description

Add the covers module for building image urls of authors and books

Closes #

Type of Change

• Bug fix
• New feature
• Enhancement (refactor, performance, DX improvement)
• Documentation
• Breaking change

What Changed

• src/schemas/cover-schema.ts – Added cover schema for cover key type, size and resource
• src/modules/cover.module.ts – Added cover module and url builder
• src/client.ts – Wired covers module to client
• __tests__ populated with newly added features

Summary by CodeRabbit

• New Features

  • Added cover module with fluent URL builder for generating author and book cover image URLs
  • Support for multiple identifier types: ISBN, OCLC, LCCN, OLID, and default ID
  • Configurable cover image sizes: small, medium, and large

• Tests

  • Added comprehensive test suite for cover module functionality

[coderabbitai]

Caution

Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

This PR introduces a new Cover module with a fluent URL builder API for constructing Open Library cover image URLs. The module supports different key types (isbn, oclc, lccn, olid, id), sizes (S, M, L), and resources (author, book). The feature is integrated into the main OpenLibrary client with corresponding type exports and comprehensive test coverage.

Changes

Cohort / File(s)	Summary
Cover Module Implementation src/modules/cover.module.ts, src/schemas/cover-schema.ts	Introduces CoverModule and UrlBuilder classes with fluent API for building Open Library cover image URLs. Defines Zod schemas for cover key types (isbn, oclc, lccn, olid, id), sizes (S, M, L), and resources (author, book).
API Integration src/client.ts, src/index.ts	Exposes new covers property on OpenLibrary class; updates public exports to include UrlBuilder and cover-related types while removing createOpenLibraryClient export.
Test Suite __tests__/modules/cover.module.test.ts	Comprehensive test coverage for CoverModule creation, author/book URL builders, key type changes, size variations, and UrlBuilder chaining behavior.
Release Configuration .changeset/loose-donuts-count.md	Declares minor version bump for @asmelabs/olib with description of new cover module feature.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐰 A cover so fine, for each book and each author,
Built fluent and smooth, just as builders ought-er,
With sizes and types in an elegant chain,
The URLs flow forth like fresh carrots and grain! 📚✨

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/covers

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