feat(wallet): pay external shielded addresses from the Platform balance - #1057
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QuantumExplorer merged 2 commits intoAug 25, 2026
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Entering a shielded address on the Platform balance-row Send sheet used to dead-end in 'This address can't be paid from your Platform balance': the SDK's only Platform-credits shield op had no recipient parameter. The SDK now exposes shieldedShieldToRecipient (platform PR: Type 15 shield with the note assigned to a third-party Orchard address), so the Send flow gains the missing route. - SendViewModel: .platformToShielded route; shielded destinations accept .platform as a source. Affordability is governed solely by the SDK shield-capacity preflight (same authority as the internal transfer's PlatformShieldAmountPolicy): nil capacity fails closed and stays quiet while resolving, a FAILED preflight is named inline, Max fills the preflight's executable ceiling floored to whole duffs, and a Platform balance publication re-runs the preflight. - SendConfirmSheet: From reads Platform balance, the fee row shows the flat 2-action shield fee, the checklist gains the proving step, and confirm dispatches performShield(recipientRaw43:). - ShieldedTransferCoordinator.performShield takes an optional external recipient and routes it to shieldedShieldToRecipient; the confirm-time capacity revalidation is unchanged (recipient does not affect input selection). - The three platform-shield preflight message strings move from private to internal on InternalTransferViewModel for reuse (no copies). Requires the platform-side shieldedShieldToRecipient SDK addition; verified with a clean dashpay build against it plus an on-sim smoke of the pinned-Platform send flow (route accepted end-to-end, preflight fail-closed messaging on a zero balance). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: defaults Review profile: CHILL Plan: Pro Plus Run ID: 📒 Files selected for processing (1)
Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe payment flow adds a Platform-to-Shielded route. ChangesPlatform to Shielded Transfer
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: ⚪ Minimal · up to This change enables Platform-balance payments to external shielded addresses; no actionable merge-blocking risk remains, and it is merge-ready after normal checks and review. Suggested reviewers: Sequence Diagram(s)sequenceDiagram
participant SendViewModel
participant PlatformAddressSyncCoordinator
participant SendConfirmSheet
participant ShieldedTransferCoordinator
SendViewModel->>PlatformAddressSyncCoordinator: preflightShield()
PlatformAddressSyncCoordinator-->>SendViewModel: PlatformShieldCapacity
SendViewModel->>SendConfirmSheet: enable Platform-to-Shielded send
SendConfirmSheet->>ShieldedTransferCoordinator: performShield(amountCredits, recipientRaw43)
ShieldedTransferCoordinator->>ShieldedTransferCoordinator: shieldedShieldToRecipient
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Actionable comments posted: 2
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Inline comments:
In `@DashWallet/Sources/UI/Payments/Pay/SendScreen.swift`:
- Around line 942-946: Move the route-based shielded fee estimation currently
performed by networkFeeCredits in SendConfirmSheet into SendViewModel or a
dedicated service, including the platformToShielded estimate and the other route
calculations. Have SendConfirmSheet receive the computed fee result and only
present it, without calling PlatformWalletManager.estimateShieldedFee or
performing fee calculations inside the SwiftUI View.
In `@DashWallet/Sources/UI/Payments/Pay/SendViewModel.swift`:
- Around line 366-390: Update refreshShieldPreflight and
restartShieldPreflightOnBalanceChange to clear platformShieldCapacity and
shieldPreflightFailed before launching each preflight. In the nil-capacity Max
path, trigger a new preflight instead of only showing loading, and update the
Max-state UI around canContinue to show the failure state when that retry fails
rather than leaving the amount blocked indefinitely.
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Fix all unresolved CodeRabbit comments on this PR:
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📒 Files selected for processing (4)
DashWallet/Sources/UI/Payments/InternalTransfer/InternalTransferViewModel.swiftDashWallet/Sources/UI/Payments/InternalTransfer/ShieldedTransferCoordinator.swiftDashWallet/Sources/UI/Payments/Pay/SendScreen.swiftDashWallet/Sources/UI/Payments/Pay/SendViewModel.swift
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QuantumExplorer
changed the title
…from Max Review follow-ups on the Platform → Shielded preflight state machine: - refreshShieldPreflight clears the cached capacity and failure flag before launching, so canContinue/validation fail closed on the fresh ceiling instead of accepting a stale one mid-refresh (matching the internal-transfer sibling's contract); completion resolves a parked Max preflight notice instead of leaving "checking…" up forever. - The Max path names a FAILED preflight (previously it showed the loading message) and kicks a retry — before, nothing retried until a route or balance change. - The platform-balance sink only restarts the preflight when the balance actually changed; the publisher re-emits every sync pass and each restart now clears capacity. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
QuantumExplorer
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claude/platform-shielded-payment-error-215565
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August 25, 2026 09:42
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Issue being fixed or feature implemented
Entering a shielded address on the Platform balance-row Send sheet dead-ended in "This address can't be paid from your Platform balance". The pinned-source mismatch guard was correct at the time — the SDK's only Platform-credits shield operation (
shieldedShield) had no recipient parameter, so Platform credits could only shield into the wallet's own pool.What was done?
dashpay/platform#4472 adds
shieldedShieldToRecipient(the Type 15 shield with the note assigned to a third-party Orchard address — no consensus change, the transition already carried an arbitrary recipient inside the opaque Orchard action). This PR wires the missing route into the Send flow:.platformToShieldedroute; shielded destinations accept.platformas a source (validSources). Affordability is governed solely by the SDK shield-capacity preflight — the samePlatformShieldAmountPolicyauthority the internal transfer uses:nilcapacity fails closed (quiet while resolving, a failed preflight is named inline), Max fills the preflight's executable ceiling floored to whole duffs, and a Platform balance publication re-runs the preflight.performShield(amountCredits:recipientRaw43:)— nil keeps the internal shield-to-self exactly; an external recipient routes toshieldedShieldToRecipient. The confirm-time capacity revalidation is unchanged (the recipient does not affect input selection).privatetointernalonInternalTransferViewModelfor reuse (no copies).Depends on dashpay/platform#4472 — build against a swift-sdk checkout containing it (rebuild
DashSDKFFI.xcframework).How Has This Been Tested?
dashpayscheme build (arm64 sim) against the platform branch.🤖 Generated with Claude Code
Screenshots
A shielded address on the Platform balance-row Send sheet: previously an instant "This address can't be paid from your Platform balance" dead end; now the route advances, and affordability is governed by the live SDK shield preflight (shown failing closed on a zero-balance wallet).
Summary by CodeRabbit