write-app-change-log
Generates and updates the latest app changelog based on git history since the last version tag.
What this skill does
# Write App Change Log
This skill automates the process of creating a concise and meaningful changelog for the app.
## Workflow
1. **Fetch Latest Tags**:
* Ensure all tags are fetched from the remote repository.
* Example: `git fetch --tags origin`
2. **Identify the Base Tag**:
* Find the latest git tag that matches the pattern `v*`.
* Example: `git tag -l "v*" --sort=-v:refname | head -n 1`
3. **Collect Commits**:
* Get all commits from the identified tag to the current `HEAD`.
* For each commit, collect the title and the full description.
* Example: `git log <base-tag>..HEAD --pretty=format:"%s%n%b%n---"`
4. **Filter App-Related Commits**:
* Analyze the commit messages and files changed.
* **Exclude** commits that primarily affect:
* Repository infrastructure (e.g., `.github/`, `scripts/`, `fastlane/` except changelogs).
* CI/CD pipelines (e.g., workflow YAML files, Dockerfiles).
* Build tools configuration (unless it directly impacts app behavior).
* Internal documentation or maintenance (e.g., `README.md`, `AGENTS.md`, `task.md`, `implementation_plan.md`).
* **Include** commits that modify:
* App source code (`app/`, `database/`, `network/`).
* Resources (`strings.xml`, UI layouts).
* User-facing features or bug fixes.
5. **Identify Meaningful Changes**:
* From the filtered list, select the **2-5 most significant** changes.
* Focus on what is most impactful for the end-user (new features, major bug fixes, performance improvements).
6. **Match Style and Tone**:
* Read the existing changelogs in `fastlane/metadata/android/en-US/changelogs/`.
* Identify the highest numbered file (e.g., `9.txt`).
* Analyze the language, tone, and formatting of recent entries.
* Maintain the same concise and professional style.
* Usually, the format is: `Welcome to Janus <version-name> (<version-code>)` followed by bullet points if multiple changes are listed, or a single descriptive sentence.
7. **Update the Latest Changelog**:
* Take the identified meaningful changes.
* Draft the new content matching the established style.
* **Update** the highest numbered file in `fastlane/metadata/android/en-US/changelogs/` with the new content.
## Guidelines
- Be concise.
- Focus on user value.
- Avoid technical jargon unless necessary.
- Ensure the version name and code in the changelog match the current project state (can be found in `app/build.gradle.kts` or similar).
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