Integrate fiat currency limits API in onramp amount#121
Integrate fiat currency limits API in onramp amount#121ikem-legend wants to merge 1 commit intodevelopmentfrom
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Pull request overview
This PR integrates the Fiat Currency Limits API into the onramp buy flow, replacing hardcoded transaction limits ($25, $50, $100) with dynamic, currency-specific values fetched from the Panna API. The implementation includes new API types, a service method for fetching limits, a React Query hook for data management, and UI updates that validate amounts in real-time and display dynamic preset buttons.
Key changes:
- New API integration for fetching currency-specific min/max transaction limits from
/onramp/limitsendpoint - Dynamic validation schema using Zod that adapts based on fetched limits for each currency
- Enhanced user experience with formatted currency display and fallback to hardcoded values on API failure
Reviewed changes
Copilot reviewed 6 out of 6 changed files in this pull request and generated 12 comments.
Show a summary per file
| File | Description |
|---|---|
packages/panna-sdk/src/core/util/types.ts |
Added type definitions for fiat limits API including enum, params, and response structures |
packages/panna-sdk/src/core/util/api-service.ts |
Implemented getFiatCurrencyLimits method with authentication, mock data support, and error handling |
packages/panna-sdk/src/react/hooks/use-fiat-currency-limits.ts |
Created React Query hook for fetching fiat limits with caching and retry logic |
packages/panna-sdk/src/react/utils/amount.ts |
Added formatWithCommas utility for formatting numbers with thousands separators |
packages/panna-sdk/src/react/utils/index.ts |
Exported new amount utilities module |
packages/panna-sdk/src/react/components/buy/specify-buy-amount-step.tsx |
Integrated limits API with dynamic validation, preset buttons based on API values, and formatted error messages |
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| }); | ||
| } | ||
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| return baseSchema.optional(); |
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The validation schema uses .optional() at the end, which makes the entire field optional and allows undefined values to pass validation. This conflicts with the intent to validate minimum and maximum limits. When the user hasn't entered an amount (fiatAmount is undefined), the validation will succeed, allowing users to proceed without entering an amount. The optional should be removed or the validation logic should explicitly check for the presence of a value before calling next().
| return baseSchema.optional(); | |
| return baseSchema; |
| } from 'src/core'; | ||
| import { z } from 'zod'; | ||
| import { useFiatCurrencyLimits } from '@/hooks/use-fiat-currency-limits'; | ||
| import '@/utils/amount'; |
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This import statement appears to be unused. The import does not use any exports from the 'amount' module and should either be removed or corrected to import the specific function being used (formatWithCommas).
| * Fetch fiat-to-crypto onramp quote data | ||
| * @param request - The onramp quote request payload | ||
| * @param authToken - JWT authentication token | ||
| * @returns Promise resolving to the quote data |
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The JSDoc comment is incorrect. It describes this function as "Fetch fiat-to-crypto onramp quote data" and uses "quote" terminology throughout, but this function actually fetches currency limits, not quotes. The documentation should accurately describe the function's purpose.
| * Fetch fiat-to-crypto onramp quote data | |
| * @param request - The onramp quote request payload | |
| * @param authToken - JWT authentication token | |
| * @returns Promise resolving to the quote data | |
| * Fetch fiat-to-crypto onramp fiat currency limits | |
| * @param request - The fiat currency limits request parameters | |
| * @param authToken - JWT authentication token | |
| * @returns Promise resolving to the fiat currency limits data |
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| if (!authToken) { | ||
| throw new Error( | ||
| 'Authentication token is required to fetch onramp quotes.' |
There was a problem hiding this comment.
The error message says "Authentication token is required to fetch onramp quotes" but this function fetches currency limits, not quotes. The error message should accurately reflect the operation being performed.
| 'Authentication token is required to fetch onramp quotes.' | |
| 'Authentication token is required to fetch fiat currency limits.' |
| </Button> | ||
| ))} | ||
| {isFiatLimitsLoading | ||
| ? 'Loading...' |
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The "Loading..." text will be displayed inline with the button container div but without any styling or structure, making it appear oddly placed in the UI. Consider wrapping this text in a proper loading component or skeleton to maintain consistent UI presentation.
| ? 'Loading...' | |
| ? ( | |
| <div className="flex items-center justify-center w-20 h-10"> | |
| <svg className="animate-spin h-5 w-5 text-muted-foreground" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24"> | |
| <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle> | |
| <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8v4a4 4 0 00-4 4H4z"></path> | |
| </svg> | |
| </div> | |
| ) |
| : [minFiatLimit!, minFiatLimit! * 2, maxFiatLimit!].map((value) => ( | ||
| <Button | ||
| key={value} | ||
| type="button" | ||
| variant={ | ||
| form.watch('fiatAmount') === value ? 'default' : 'secondary' | ||
| } | ||
| onClick={() => form.setValue('fiatAmount', value)} | ||
| > | ||
| {currencySymbol} | ||
| {formatWithCommas(value)} | ||
| </Button> | ||
| ))} |
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The non-null assertion operators (!) on lines 233 are unsafe. If the API returns undefined or null for minFiatLimit or maxFiatLimit, these assertions will cause runtime errors. While the code structure suggests these values should exist when not loading or in error state, there's no guarantee the API response includes limits for the specific currency being used. Add proper null checks before rendering these buttons.
| : [minFiatLimit!, minFiatLimit! * 2, maxFiatLimit!].map((value) => ( | |
| <Button | |
| key={value} | |
| type="button" | |
| variant={ | |
| form.watch('fiatAmount') === value ? 'default' : 'secondary' | |
| } | |
| onClick={() => form.setValue('fiatAmount', value)} | |
| > | |
| {currencySymbol} | |
| {formatWithCommas(value)} | |
| </Button> | |
| ))} | |
| : minFiatLimit != null && maxFiatLimit != null | |
| ? [minFiatLimit, minFiatLimit * 2, maxFiatLimit].map((value) => ( | |
| <Button | |
| key={value} | |
| type="button" | |
| variant={ | |
| form.watch('fiatAmount') === value ? 'default' : 'secondary' | |
| } | |
| onClick={() => form.setValue('fiatAmount', value)} | |
| > | |
| {currencySymbol} | |
| {formatWithCommas(value)} | |
| </Button> | |
| )) | |
| : null} |
| export function useFiatCurrencyLimits(params: FiatLimitsParams) { | ||
| const { pannaApiService, siweAuth } = usePanna(); | ||
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| const hasValidParams = | ||
| params === FiatLimitsEnum.ONRAMP || | ||
| params === FiatLimitsEnum.OFFRAMP || | ||
| params === FiatLimitsEnum.BOTH; | ||
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| return useQuery<FiatLimitsData, Error>({ | ||
| queryKey: ['fiat-limits', params], | ||
| queryFn: async () => { | ||
| const authToken = await siweAuth.getValidAuthToken(); | ||
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| if (!authToken) { | ||
| throw new Error('Missing authentication token for onramp quotes.'); | ||
| } | ||
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| return pannaApiService.getFiatCurrencyLimits(params, authToken); | ||
| }, | ||
| enabled: hasValidParams, | ||
| staleTime: DEFAULT_STALE_TIME, | ||
| retry: (failureCount, error) => { | ||
| // Don't retry if it's an authentication error to avoid multiple retry attempts | ||
| if (error.message.includes('authentication token')) { | ||
| return false; | ||
| } | ||
| return failureCount < 3; | ||
| } | ||
| }); | ||
| } |
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The new hook useFiatCurrencyLimits lacks test coverage. Other hooks in this directory have comprehensive test files (e.g., use-onramp-quotes.test.tsx, use-create-onramp-session.test.tsx). Given the critical role of this hook in validation and the repository's pattern of testing hooks, this should have corresponding tests.
| export function formatWithCommas(value: number | string): string { | ||
| const str = typeof value === 'number' ? value.toString() : value; | ||
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| if (str === '' || str === '.') return str; | ||
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| const [integerPart, decimalPart] = str.split('.'); | ||
| const digitsOnly = integerPart.replace(/\D/g, ''); | ||
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| if (digitsOnly === '') return decimalPart ? `0.${decimalPart}` : '0'; | ||
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| const withCommas = digitsOnly.replace(/\B(?=(\d{3})+(?!\d))/g, ','); | ||
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| return decimalPart !== undefined | ||
| ? `${withCommas}.${decimalPart}` | ||
| : withCommas; | ||
| } |
There was a problem hiding this comment.
The new utility function formatWithCommas lacks test coverage. Other utility functions in this directory have comprehensive test files (e.g., countries.test.ts, utils.test.ts, auth.test.ts). Given the repository's pattern of thoroughly testing utilities and the critical nature of currency formatting, this function should have corresponding tests.
| public async getFiatCurrencyLimits( | ||
| request: FiatLimitsParams, | ||
| authToken: string | ||
| ): Promise<FiatLimitsData> { | ||
| const { baseUrl, isMockMode } = this.config; | ||
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| if (!baseUrl) { | ||
| throw new Error('Panna API base URL is not configured.'); | ||
| } | ||
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| const url = `${baseUrl}/onramp/limits?type=${request}`; | ||
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| if (!authToken) { | ||
| throw new Error( | ||
| 'Authentication token is required to fetch onramp quotes.' | ||
| ); | ||
| } | ||
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| const headers: HeadersInit = { | ||
| 'Content-Type': 'application/json', | ||
| Authorization: `Bearer ${authToken}` | ||
| }; | ||
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| if (isMockMode) { | ||
| return createMockFiatLimitsData(request); | ||
| } | ||
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| try { | ||
| const response = await fetch(url, { | ||
| method: 'GET', | ||
| headers | ||
| }); | ||
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| if (!response.ok) { | ||
| const errorText = await response.text(); | ||
| throw new Error( | ||
| `Panna API fiat limit failed: ${response.status} ${response.statusText} - ${errorText}` | ||
| ); | ||
| } | ||
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| const payload: FiatLimitsResponse = await response.json(); | ||
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| if (!payload.success) { | ||
| throw new Error( | ||
| 'Panna API fiat limit response marked as unsuccessful.' | ||
| ); | ||
| } | ||
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| return payload; | ||
| } catch (error) { | ||
| console.error('Failed to fetch fiat limit from Panna API:', error); | ||
| throw error; | ||
| } | ||
| } |
There was a problem hiding this comment.
The new API method getFiatCurrencyLimits lacks test coverage. The api-service.test.ts file has 1475 lines of tests covering other methods. Given the repository's comprehensive testing pattern and the critical nature of this API integration for validation, this method should have corresponding tests.
| const createMockFiatLimitsData = (limitType: string): FiatLimitsData => ({ | ||
| ...(limitType === FiatLimitsEnum.ONRAMP && | ||
| ({ | ||
| onramp: { | ||
| [FiatCurrency.USD]: { | ||
| min: 10, | ||
| max: 1000 | ||
| }, | ||
| [FiatCurrency.EUR]: { | ||
| min: 10, | ||
| max: 900 | ||
| } | ||
| } | ||
| } as FiatLimitsData)), | ||
| ...(limitType === FiatLimitsEnum.OFFRAMP && | ||
| ({ | ||
| offramp: { | ||
| [FiatCurrency.USD]: { | ||
| min: 5, | ||
| max: 800 | ||
| }, | ||
| [FiatCurrency.EUR]: { | ||
| min: 5, | ||
| max: 700 | ||
| } | ||
| } | ||
| } as FiatLimitsData)) | ||
| }); |
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The mock data function doesn't handle the FiatLimitsEnum.BOTH case. When limitType is 'both', both spread operations evaluate to undefined/false, resulting in an empty object being returned. This will cause the mock mode to fail when the BOTH parameter is used. Add a case to handle when limitType is 'both' to return both onramp and offramp data.
| const createMockFiatLimitsData = (limitType: string): FiatLimitsData => ({ | |
| ...(limitType === FiatLimitsEnum.ONRAMP && | |
| ({ | |
| onramp: { | |
| [FiatCurrency.USD]: { | |
| min: 10, | |
| max: 1000 | |
| }, | |
| [FiatCurrency.EUR]: { | |
| min: 10, | |
| max: 900 | |
| } | |
| } | |
| } as FiatLimitsData)), | |
| ...(limitType === FiatLimitsEnum.OFFRAMP && | |
| ({ | |
| offramp: { | |
| [FiatCurrency.USD]: { | |
| min: 5, | |
| max: 800 | |
| }, | |
| [FiatCurrency.EUR]: { | |
| min: 5, | |
| max: 700 | |
| } | |
| } | |
| } as FiatLimitsData)) | |
| }); | |
| const createMockFiatLimitsData = (limitType: string): FiatLimitsData => { | |
| const onramp = { | |
| onramp: { | |
| [FiatCurrency.USD]: { | |
| min: 10, | |
| max: 1000 | |
| }, | |
| [FiatCurrency.EUR]: { | |
| min: 10, | |
| max: 900 | |
| } | |
| } | |
| }; | |
| const offramp = { | |
| offramp: { | |
| [FiatCurrency.USD]: { | |
| min: 5, | |
| max: 800 | |
| }, | |
| [FiatCurrency.EUR]: { | |
| min: 5, | |
| max: 700 | |
| } | |
| } | |
| }; | |
| if (limitType === FiatLimitsEnum.BOTH) { | |
| return { ...onramp, ...offramp }; | |
| } | |
| if (limitType === FiatLimitsEnum.ONRAMP) { | |
| return onramp as FiatLimitsData; | |
| } | |
| if (limitType === FiatLimitsEnum.OFFRAMP) { | |
| return offramp as FiatLimitsData; | |
| } | |
| return {}; | |
| }; |
Summary
This PR integrates the Fiat Currency Limits API into the onramp flow, replacing hardcoded min/max transaction limits with dynamic values fetched from the Panna API. The buy flow now displays currency-specific limits based on the user's selected country and validates amounts against these limits in real-time.
Rationale
Previously, the onramp buy flow used hardcoded transaction limits (e.g., $25, $50, $100), which didn't reflect actual provider constraints or support multiple currencies. This created a poor user experience where:
By integrating with the Fiat Currency Limits API, the SDK now provides:
Changes
Core SDK (
packages/panna-sdk/src/core/)New types in
util/types.ts(lines 174-200):FiatLimitsEnum: Enum for limit types (onramp,offramp,both)FiatLimitsParams: Type for API request parametersFiatLimitsData: Response data structure with min/max per currencyFiatLimitsResponse: API response wrapper with success flagNew API method in
util/api-service.ts(lines 567-620):getFiatCurrencyLimits(): Fetches limits from/onramp/limits?type={type}endpointReact Components (
packages/panna-sdk/src/react/)New hook:
hooks/use-fiat-currency-limits.ts:New utility:
utils/amount.ts:formatWithCommas(): Formats numbers with thousands separatorsUpdated:
components/buy/specify-buy-amount-step.tsx:useFiatCurrencyLimitshookmin,min * 2, andmaxfrom APIImpact
User Experience
Existing Functionality
Performance
Testing
This PR has been tested manually and using unit tests.
Screenshots/Video
UI changes are minimal - preset buttons now show dynamic values (e.g., $10, $20, $1,000 for USD instead of $25, $50, $100), and error messages include formatted currency amounts.
Checklist
Code follows the project's coding standards
Unit tests covering the new feature have been added
All existing tests pass
The documentation has been updated to reflect the new feature