🐞 2026-11-13 | From Bug Report to GitHub Issue 📸
🧑💻 Author’s Note
👋 Hello! Issue #38 asks whether someone could report a bug from inside Domination, add a few notes, and have the app create a GitHub issue with diagnostics and perhaps a screenshot. It would be acceptable to sign in to GitHub, but it would be even better if people without GitHub accounts could send a report too.
✅ Yes, with a choice about what “automatic” means. The app already builds a useful diagnostic report; it currently asks the player to copy it and paste it into a GitHub issue. A GitHub-hosted issue form can make that handoff friendlier and let the player attach a screenshot, but the player still signs in and presses Submit on GitHub. Truly automatic issue creation—including for people without GitHub accounts—needs a trusted server and an app identity that can write to this repository. Screenshots are a separate problem: GitHub’s current REST API has issue artifacts for text, but its documented artifact request is not a binary screenshot upload.
🔎 What Domination Already Knows
The app already has a Settings → Debug view with Copy bug report, Clear log, and a read-only report. It includes the app version, browser user agent, generation time, page facts, a sync journal, and captured console entries (report model, debug view). The JavaScript logger keeps bounded console and sync buffers in local storage and captures uncaught errors and unhandled rejections (logger).
The report is designed to provide context for a bug report. It includes the current page location, browser and app details, and recent application logs. The GitHub issue is the destination for that diagnostic context, alongside the reporter’s description.
Domination is a static PWA deployed to GitHub Pages for previews and GitLab Pages for production. The existing Cloudflare Worker is a room mailbox, not an issue-submission service. GitHub credentials for app-authored issue creation must be held server-side, so that approach adds a backend component.
🧭 Four Ways to File the Report
📝 1. GitHub-hosted issue form: the smallest step
GitHub issue forms let the repository define structured prompts for a title, description, reproduction steps, expected behavior, and optional diagnostic text. Their upload field can accept a screenshot up to 10 MB. The form schema is in public preview and may change.
The app could keep its current copy button, add a human-notes box, and open a bug form where the reporter adds the report and an image if wanted. This keeps submission in GitHub’s own interface, avoids a GitHub token in the app, and uses GitHub’s supported upload flow. The reporter needs a GitHub account; the issue is filed through GitHub rather than directly by the app.
🔑 2. User-authorized app: create an issue as the reporter
GitHub’s create-issue REST endpoint accepts a title and body, so the app could send the notes and diagnostic text after the reporter authorizes it. Creating issues requires write permission; it is not an unauthenticated public-data request. GitHub recommends GitHub Apps over OAuth Apps where possible, in part because an App can use fine-grained permissions and short-lived tokens.
The reporter would still need a GitHub account. A GitHub App can request a user access token for acting on a user’s behalf, but the web authorization flow needs a secure code exchange (user authorization). The app’s client secret or private key must not be put in public JavaScript or browser storage. A small backend would handle that exchange, keep credentials server-side, and limit the requested permission to what issue creation needs. The resulting issue can be attributed to the reporter, but this adds OAuth lifecycle, cancellation, revocation, and token-handling work.
🤖 3. App-authorized backend: accept reports without GitHub accounts
A backend could authenticate as a GitHub App installation and create issues through the same endpoint. GitHub’s installation access tokens can be restricted to selected repositories and permissions, and expire after one hour. The installation would be limited to this repository and the minimum write permission needed.
This removes the reporter’s GitHub-account requirement, but the issue is created by the app—not by an anonymous person’s GitHub identity. It also makes the backend a public write endpoint. The service would need request validation, payload limits, and rate limiting to protect availability and stay within GitHub’s API limits (REST API rate limits). Cloudflare requires server-side validation of Turnstile tokens if Turnstile is used.
The mailbox Worker is a potential place to host a separate endpoint, not an existing ready-made issue service. It currently accepts room mailbox traffic; adding a GitHub App private key and public issue-writing behavior to that service would need to be an intentional, separately secured design.
💬 4. giscus: GitHub-backed conversation, not issue creation
giscus is a useful project to study because it stores website comments in GitHub Discussions rather than a separate database. It maps a page to a Discussion and lets visitors comment after authorizing the giscus app through GitHub. That makes it a reasonable pattern for community feedback or discussion.
It does not create GitHub issues, and commenters must authorize with GitHub. It therefore does not meet the “automatically file a bug” or no-GitHub-account requirement. Discussions could be an alternative intake destination if the product wanted a public conversation before maintainers turn reports into issues, but that is a different workflow.
📸 What About the Screenshot?
- 🧑💻 Let GitHub handle the upload. An issue form’s upload control is the most direct documented route and stores the file with the issue.
- 🪟 Ask the browser to capture a screen.
getDisplayMedia()requires a secure context, a user gesture, and a fresh browser permission prompt; browser support is not universal (MDN). It lets the user choose a display surface. A frame from the resulting stream could be included in the report. - 🧩 Render the app’s DOM as an image. A library such as html2canvas reconstructs an image from the page’s DOM; it is not a true browser screenshot and does not support every CSS feature. Cross-origin images can taint the canvas and prevent reading or exporting the result (html2canvas limitations). This could be tested on Domination’s SVG/CSS interface.
- 🧱 Use GitHub Issue Artifacts. GitHub’s Issue Artifacts are in public preview. The Issue Artifacts REST API can attach an artifact to an existing issue, with a string
bodyand types such asgenericandembedded_html; it requires permission to update the issue. That could be useful for adding formatted diagnostics after creating the issue. The REST documentation does not define a binary-file upload field or a body-size limit, so it should not be treated as a supported screenshot-byte upload path. GitHub CLI has a separategh issue artifact create --attachoption for image/video files, but that CLI workflow is not a browser REST API.
🧭 Recommendation
🌱 Start with a simple issue-form handoff: extend the existing Debug view with a title and human-notes field, and provide the diagnostic report for the GitHub issue form. Keep copying diagnostics as an alternative, and let the reporter attach a screenshot in GitHub’s form. This reuses the app’s diagnostic capture and requires no GitHub credentials or new backend.
🚀 If having to sign in to GitHub is a barrier, prototype a separate Cloudflare Worker endpoint backed by a narrowly scoped GitHub App. Make reporter-authorized issues and app-authored reports distinct options. First test the supported issue-creation flow and diagnostic text artifacts; treat screenshot-byte upload as unresolved until a documented, supported upload path is selected.
✍️ Signed
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📅 November 13, 2026
🏠 For bagrounds.org