Add Export and Download Functionality for Group Expense Reports (CSV/JSON)

[Cjay-Cyber-2]

Description — what to implement and the why/impact.

Users and small communities often need to audit, archive, or import their shared expense data into accounting tools. This issue adds CSV and JSON export functionality for group dashboards, allowing users to download structured transaction histories with a single click.

Context & Requirements — background, constraints, design references, edge cases; grounded in the actual repo (real files, stack, conventions).

Implement an export utility that formats group expenses and settlements into clean CSV strings and JSON blobs, triggering browser downloads securely. Place the export action inside the group settings or dashboard header component using neobrutalist button styling.

Acceptance Criteria — a checklist ("- [ ] ...") of specific, testable conditions that define "done".

• Create export utility functions in src/lib/ for CSV and JSON formats.
• Add an export dropdown or button component in group views (src/components/groups/).
• Ensure special characters and currency values are correctly escaped in CSV outputs.
• Pass npm run typecheck and npm test.

Implementation Guidance — likely files/modules to touch (use real paths from the repo context) and a suggested approach, without over-prescribing.

• Reference src/lib/types.ts for group and expense data structures.
• Add unit tests for CSV serialization and escaping rules.

Testing & Validation — how the contributor should prove it works (tests to add/run, manual checks, screenshots for UI).

• Unit test the CSV generator with sample expense items.
• Verify browser file download triggering in supported environments.

Submission Guidelines — must open a PR that includes "Closes #"; assignment is required before starting; follow the repo's existing style and conventions.

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Wave complexity: Medium

[Ranjeet2063]

Hello @maintainers,

I would like to resolve this issue. Here is my proposed execution plan for Add Export and Download Functionality for Group Expense Reports (CSV/JSON):

• Implementation: Deliver a clean, modular solution for Add Export and Download Functionality for Group Expense Reports (CSV/JSON) adhering strictly to mergepay/mergepay-web's architecture.
• Testing & Verification: Cover implementation with automated unit tests for edge cases and core workflows.
• Delivery: Ready to ship a thoroughly tested PR within 12–24 hours with passing CI.

Let me know if this approach looks good and please assign!

[guptakumarranjeet150]

Hi everyone,

I would like to resolve this issue. Here is my proposed execution plan:

• Implementation: Deliver a clean, modular solution for Add Export and Download Functionality for Group Expense Reports (CSV/JSON) strictly following mergepay/mergepay-web conventions.
• Testing & Verification: Cover changes with automated tests ensuring CI passes smoothly.
• Delivery: Ready to ship a thoroughly tested PR within 12–24 hours with passing CI.

Looking forward to contributing—please feel free to assign!

[shobhamerabacha-star]

Hello @maintainers,

I can tackle Add Export and Download Functionality for Group Expense Reports (CSV/JSON). Proposed implementation roadmap:

• Analysis: Inspect current behavior and edge cases in mergepay/mergepay-web
• Implementation: Deliver a clean, modular solution for Add Export and Download Functionality for Group Expense Reports (CSV/JSON) strictly following mergepay/mergepay-web conventions.
• Testing: Cover changes with automated tests ensuring CI passes smoothly.
• PR: Atomic commit with clean git hygiene and passing CI

Excited to work on this—please assign to me and I'll submit a clean PR shortly!