Implement Draft Invoice State

[0xDeon]

Description 📝

Introduce a Draft status for invoices. Draft invoices are stored but are not visible to public queries or payable by customers until they are "finalized" by the merchant.

Proposed Steps 📝

• Update Types: Add Draft to InvoiceStatus.
• Implement functions: finalize_invoice(env, merchant, id).

Acceptance Criteria ✅

• Draft invoices do not appear in standard get_invoices lists.
• Draft invoices cannot be paid.

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[edehvictor]

@edehvictor has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Can I fix this real quick

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[DioChuks]

@DioChuks has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I would introduce a Draft status for invoices. Draft invoices are stored but are not visible to public queries or payable by customers until they are "finalized" by the merchant. I'm also good contributor with quality code & assurance.

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[Lakes41]

@Lakes41 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hello maintainer,

I am interested in implementing the "Draft" status for invoices to provide merchants with more control over their billing workflow. I will update the InvoiceStatus enum to include the Draft state and develop the finalize_invoice function to allow merchants to transition invoices to an active, payable status. My approach involves modifying the existing query logic to ensure draft invoices are filtered out of public views and adding a strict validation layer to prevent any payment attempts on invoices that have not yet been finalized.

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[Anuoluwapo25]

@Anuoluwapo25 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hi maintainer, I'd like to take on this issue as i'll fully implement what is requested as i'm a fullstack web3 developer with experiences.

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Congratulations, @Anuoluwapo25! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @Anuoluwapo25: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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[martinvibes]

@martinvibes has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

I’d like to work on this issue because it aligns with my experience building and contributing to web and blockchain projects. I’m comfortable working across frontend and smart contract codebases and delivering clean, well-structured solutions. I’ve reviewed the issue and repository and can implement a reliable fix while following the project’s standards. I communicate progress clearly and iterate quickly based on feedback. I’d be happy to take this on and would appreciate being assigned.

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[davedumto]

@davedumto has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

Hi, my name is David, and I am a fullstack and smart contract developer skilled in React, Next.js, JavaScript, TypeScript, Tailwind CSS, and Soroban. For this task, I will:

1. Update InvoiceStatus enum to include a Draft variant in the contract types, ensuring type safety and proper serialization/deserialization across all invoice operations.
2. Implement finalize_invoice(env, merchant, id) function with merchant authentication, invoice ownership validation, and state transition logic from Draft to active status with appropriate event emission.
3. Modify get_invoices query functions to filter out Draft status invoices from public listings, ensuring draft invoices remain merchant-only visible until finalized.
4. Add payment validation logic to reject payment attempts on Draft invoices, write comprehensive tests covering draft creation, finalization workflows, query filtering, and payment rejection scenarios.
   ETA: 10 hours

ℹ️ Repo Maintainers: To accept this application, review their application or assign @davedumto to this issue.

[drips-wave]

Congratulations, @davedumto! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on March 30, 2026.

🧑‍💻 @davedumto: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊