example review file for github repos

Here's a line-by-line explanation then critique of a file in the https://github.com/bestape/ixv-jekyll-minima-template/blob/4-rollback-446d888 repo # `gallery_v0.3.html` Explanation --- ## Header Comment ```liquid {%- comment -%} Gallery include (v0.3) ---------------------------------- Usage: {% include gallery.html slug="project-a" title="Project A" %} If omitted, it will use page.slug or page.name as a fallback. Changelog v0.3: - Added support for fallback filenames without numbers. - Cache-busting now uses file modification time (if available). - Alt text can use filename as a fallback if no title provided. - Added graceful <noscript> fallback. - Added "next steps" section in comments for future improvements. {%- endcomment -%} ``` - Documents usage. - Lists changes since earlier versions (v0.3 notes). --- ## Liquid Variables ```liquid {%- assign project_slug = include.slug | default: page.slug | default: page.name | split: "." | first -%} {%- assign project_path = '/assets/projects/' | append: project_slug -%} ``` - Chooses the project slug from: 1. `include.slug` 2. `page.slug` 3. `page.name` - Removes extensions. - Builds path `/assets/projects/<slug>`. --- ## HTML Structure ```html <div class="gallery"> <div class="swiper gallery-swiper"> <div class="swiper-wrapper"> ``` - Outer wrapper. - Swiper container and wrapper for slides. --- ## Allowed Extensions & File Filtering ```liquid {%- assign extensions = "png,jpg,jpeg,svg" | split: "," -%} {%- assign screenshots = site.static_files | where_exp: "file", "file.path contains project_path" -%} {%- assign numbered_files = "" | split: "" -%} {%- assign fallback_files = "" | split: "" -%} ``` - Valid extensions = PNG/JPG/JPEG/SVG. - Filters `site.static_files` to project path. - Creates two arrays: - `numbered_files` (like `-1.png` etc.) - `fallback_files` (non-numbered). --- ## Loop Over Files ```liquid {%- for file in screenshots -%} {%- assign ext = file.extname | remove: "." | downcase -%} {%- assign name_no_ext = file.name | remove: file.extname | remove: "." -%} {%- assign parts = name_no_ext | split: "-" -%} {%- assign last_part = parts | last -%} {%- assign number_val = last_part | plus: 0 -%} ``` - Extracts extension, filename, and checks if filename ends with a number. --- ## Categorize Files ```liquid {%- if extensions contains ext and number_val > 0 -%} {%- assign item = file.path | append: "|" | append: number_val | append: "|" | append: ext -%} {%- assign numbered_files = numbered_files | push: item -%} {%- elsif extensions contains ext -%} {%- assign item = file.path | append: "|9999|" | append: ext -%} {%- assign fallback_files = fallback_files | push: item -%} {%- endif -%} {%- endfor -%} ``` - If file has extension + numeric suffix → goes into `numbered_files`. - If only extension (no number) → goes into `fallback_files` with artificial index `9999` (so numbered ones sort first). --- ## Sort & Merge ```liquid {%- assign all_files = numbered_files | concat: fallback_files -%} {%- assign sorted_files = all_files | sort_natural -%} ``` - Merge numbered and fallback files. - Sort in natural order. --- ## Build Slides ```liquid {%- for item in sorted_files -%} {%- assign parts = item | split: "|" -%} {%- assign file_path = parts[0] -%} {%- assign file_ext = parts[2] -%} {%- assign file_name = file_path | split: "/" | last -%} <div class="swiper-slide"> <img src="{{ file_path | relative_url }}?v={{ site.time | date: '%s' }}" alt="{{ include.title | default: page.title | default: file_name }} screenshot"> </div> {%- endfor -%} ``` - Iterates over sorted items. - Gets path, extension, and filename. - Creates `<img>` tag: - URL with cache-busting timestamp. - Alt text = `title` → `page.title` → fallback to filename. --- ## Pagination + Close Wrappers ```html </div> <div class="swiper-pagination"></div> </div> ``` - Adds Swiper pagination dots. --- ## Noscript Fallback ```html <noscript> <p><em>Gallery requires JavaScript to view. Below are static images:</em></p> <ul> {%- for item in sorted_files -%} {%- assign parts = item | split: "|" -%} {%- assign file_path = parts[0] -%} {%- assign file_name = file_path | split: "/" | last -%} <li><img src="{{ file_path | relative_url }}" alt="{{ include.title | default: page.title | default: file_name }}"></li> {%- endfor -%} </ul> </noscript> </div> ``` - Provides `<noscript>` fallback: - If JS disabled, still shows a static list of `<img>`. --- ## External Dependencies ```html <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.css" /> <script src="https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js"></script> ``` - Loads Swiper CSS/JS from CDN. --- ## JavaScript Logic ```js document.addEventListener("DOMContentLoaded", function () { const wrapperSelector = ".gallery-swiper"; const wrapper = document.querySelector(wrapperSelector); if (!wrapper) return; ``` - Wait for DOM. - Select `.gallery-swiper`. --- ### Handle Empty Galleries ```js if (wrapper.querySelectorAll(".swiper-slide").length === 0) { const msg = document.createElement("p"); msg.innerHTML = `<em>No gallery images found. Please add files matching <code>-NUMBER.png|.jpg|.jpeg|.svg</code> to <code>{{ project_path }}</code>.</em>`; wrapper.parentNode.insertBefore(msg, wrapper); wrapper.remove(); return; } ``` - If no slides → injects message → removes empty wrapper. --- ### Initialize Swiper ```js const swiper = new Swiper(wrapperSelector, { loop: true, pagination: { el: wrapperSelector + ' .swiper-pagination', clickable: true }, slidesPerView: 1, spaceBetween: 10, keyboard: { enabled: true, onlyInViewport: true } }); ``` - Initializes Swiper with looping, pagination, spacing, and keyboard support. --- ### Click Navigation ```js wrapper.addEventListener("click", function (e) { if (e.target.tagName.toLowerCase() === "img") { const rect = e.target.getBoundingClientRect(); const clickX = e.clientX - rect.left; if (clickX < rect.width / 2) { swiper.slidePrev(); } else { swiper.slideNext(); } } }); }); ``` - Clicking **left half** of image → previous slide. - Clicking **right half** → next slide. --- ## Suggested Next Steps (v0.3+) ```liquid {%- comment -%} Suggested Next Steps for v0.3+: ---------------------------------- 1. Performance: Avoid scanning all static files — use YAML front matter or a _data file instead. 2. Accessibility: Allow per-image alt text via metadata (e.g., alt captions in YAML). 3. Caching: Use file hashes or last-modified times for cache busting, instead of site build time. 4. Resilience: Consider bundling Swiper locally instead of relying on CDN. 5. Graceful degradation: Enhance <noscript> block with better styling. 6. Security: Avoid leaking project_path in error messages for production builds. {%- endcomment -%} ``` - Lists improvement opportunities for future versions. --- ✅ **Summary**: v0.3 improves robustness (fallback files, better alt text, `<noscript>` fallback) while leaving room for optimization (performance, caching, accessibility).