https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=43516
Bug ID: 43516
Summary: Harden the frontend HttpClient and add a shared API
error formatter
Initiative type: ---
Sponsorship ---
status:
Product: Koha
Version: Main
Hardware: All
OS: All
Status: NEW
Severity: enhancement
Priority: P5 - low
Component: Architecture, internals, and plumbing
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Blocks: 41129
Target Milestone: ---
This patch hardens the shared frontend HttpClient (both the plain
fetch/http-client.js used by most Vue API clients, and the Vue-composable
variant in vue/fetch/http-client.js) against malformed and unreachable API
responses, and adds a generic, translated API error formatter.
Specifically:
- Guard against malformed JSON in responses (a truncated body, a proxy error
page, a session-expired redirect) instead of letting the parse error surface as
the failure.
- Preserve the HTTP status and Koha error_code on thrown errors so callers can
branch on them.
- Add a per-request config object (config.signal to cancel the underlying fetch
via AbortController, config.suppressDefaultErrorDialog for callers that present
their own error UI).
- Add fetch/api-error.js: a small, translated formatApiError() helper that
turns a thrown API error into a user-facing message (401, 403,
network-unreachable, and generic fallback cases).
This is generic frontend infrastructure with no feature-specific behaviour;
it's split out from bug 41129 (booking workflows) because several later patches
depend on it and it benefits from independent review.
Test plan:
1. Run: yarn cypress run --component --browser electron --spec
't/cypress/component/HttpClient_spec.ts,t/cypress/component/VueHttpClient_spec.ts,t/cypress/component/fetch/api-error_spec.ts'
2. Verify all specs pass.
Referenced Bugs:
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=41129
[Bug 41129] Migrate place_booking.js to a Vue island.
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