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type {\n ControllerGetStateAction,\n ControllerStateChangeEvent,\n StateMetadata,\n} from '@metamask/base-controller';\nimport { toChecksumHexAddress } from '@metamask/controller-utils';\nimport type { Messenger } from '@metamask/messenger';\nimport type {\n NetworkControllerGetStateAction,\n NetworkControllerStateChangeEvent,\n} from '@metamask/network-controller';\nimport type { NetworkEnablementControllerGetStateAction } from '@metamask/network-enablement-controller';\nimport { StaticIntervalPollingController } from '@metamask/polling-controller';\nimport type { Hex } from '@metamask/utils';\nimport { isEqual } from 'lodash';\n\nimport { reduceInBatchesSerially, TOKEN_PRICES_BATCH_SIZE } from './assetsUtil';\nimport type { AbstractTokenPricesService } from './token-prices-service/abstract-token-prices-service';\nimport { getNativeTokenAddress } from './token-prices-service/codefi-v2';\nimport { TokenRwaData } from './token-service';\nimport type {\n TokensControllerGetStateAction,\n TokensControllerStateChangeEvent,\n TokensControllerState,\n} from './TokensController';\n\n/**\n * @type Token\n *\n * Token representation\n *\n * @property address - Hex address of the token contract\n * @property decimals - Number of decimals the token uses\n * @property symbol - Symbol of the token\n * @property aggregators - An array containing the token's aggregators\n * @property image - Image of the token, url or bit32 image\n * @property hasBalanceError - 'true' if there is an error while updating the token balance\n * @property isERC721 - 'true' if the token is a ERC721 token\n * @property name - Name of the token\n */\nexport type Token = {\n address: string;\n decimals: number;\n symbol: string;\n aggregators?: string[];\n image?: string;\n hasBalanceError?: boolean;\n isERC721?: boolean;\n name?: string;\n rwaData?: TokenRwaData;\n};\n\nconst DEFAULT_INTERVAL = 180000;\n\nexport type ContractExchangeRates = {\n [address: string]: number | undefined;\n};\n\nexport type MarketDataDetails = {\n tokenAddress: `0x${string}`;\n currency: string;\n allTimeHigh: number;\n allTimeLow: number;\n circulatingSupply: number;\n dilutedMarketCap: number;\n high1d: number;\n low1d: number;\n marketCap: number;\n marketCapPercentChange1d: number;\n price: number;\n priceChange1d: number;\n pricePercentChange1d: number;\n pricePercentChange1h: number;\n pricePercentChange1y: number;\n pricePercentChange7d: number;\n pricePercentChange14d: number;\n pricePercentChange30d: number;\n pricePercentChange200d: number;\n totalVolume: number;\n};\n\n/**\n * Represents a mapping of token contract addresses to their market data.\n */\nexport type ContractMarketData = Record;\n\ntype ChainIdAndNativeCurrency = {\n chainId: Hex;\n nativeCurrency: string;\n};\n\n/**\n * The external actions available to the {@link TokenRatesController}.\n */\nexport type AllowedActions =\n | TokensControllerGetStateAction\n | NetworkControllerGetStateAction\n | NetworkEnablementControllerGetStateAction;\n\n/**\n * The external events available to the {@link TokenRatesController}.\n */\nexport type AllowedEvents =\n | TokensControllerStateChangeEvent\n | NetworkControllerStateChangeEvent;\n\n/**\n * The name of the {@link TokenRatesController}.\n */\nexport const controllerName = 'TokenRatesController';\n\n/**\n * @type TokenRatesState\n *\n * Token rates controller state\n *\n * @property marketData - Market data for tokens, keyed by chain ID and then token contract address.\n */\nexport type TokenRatesControllerState = {\n marketData: Record>;\n};\n\n/**\n * The action that can be performed to get the state of the {@link TokenRatesController}.\n */\nexport type TokenRatesControllerGetStateAction = ControllerGetStateAction<\n typeof controllerName,\n TokenRatesControllerState\n>;\n\n/**\n * The actions that can be performed using the {@link TokenRatesController}.\n */\nexport type TokenRatesControllerActions = TokenRatesControllerGetStateAction;\n\n/**\n * The event that {@link TokenRatesController} can emit.\n */\nexport type TokenRatesControllerStateChangeEvent = ControllerStateChangeEvent<\n typeof controllerName,\n TokenRatesControllerState\n>;\n\n/**\n * The events that {@link TokenRatesController} can emit.\n */\nexport type TokenRatesControllerEvents = TokenRatesControllerStateChangeEvent;\n\n/**\n * The messenger of the {@link TokenRatesController} for communication.\n */\nexport type TokenRatesControllerMessenger = Messenger<\n typeof controllerName,\n TokenRatesControllerActions | AllowedActions,\n TokenRatesControllerEvents | AllowedEvents\n>;\n\nconst tokenRatesControllerMetadata: StateMetadata = {\n marketData: {\n includeInStateLogs: false,\n persist: true,\n includeInDebugSnapshot: false,\n usedInUi: true,\n },\n};\n\n/**\n * Get the default {@link TokenRatesController} state.\n *\n * @returns The default {@link TokenRatesController} state.\n */\nexport const getDefaultTokenRatesControllerState =\n (): TokenRatesControllerState => {\n return {\n marketData: {},\n };\n };\n\n/** The input to start polling for the {@link TokenRatesController} */\nexport type TokenRatesPollingInput = {\n chainIds: Hex[];\n};\n\n/**\n * Controller that passively polls on a set interval for token-to-fiat exchange rates\n * for tokens stored in the TokensController\n */\nexport class TokenRatesController extends StaticIntervalPollingController()<\n typeof controllerName,\n TokenRatesControllerState,\n TokenRatesControllerMessenger\n> {\n readonly #tokenPricesService: AbstractTokenPricesService;\n\n #disabled: boolean;\n\n #allTokens: TokensControllerState['allTokens'];\n\n #allDetectedTokens: TokensControllerState['allDetectedTokens'];\n\n /**\n * Creates a TokenRatesController instance.\n *\n * @param options - The controller options.\n * @param options.interval - The polling interval in ms\n * @param options.disabled - Boolean to track if network requests are blocked\n * @param options.tokenPricesService - An object in charge of retrieving token price\n * @param options.messenger - The messenger instance for communication\n * @param options.state - Initial state to set on this controller\n */\n constructor({\n interval = DEFAULT_INTERVAL,\n disabled = false,\n tokenPricesService,\n messenger,\n state,\n }: {\n interval?: number;\n disabled?: boolean;\n tokenPricesService: AbstractTokenPricesService;\n messenger: TokenRatesControllerMessenger;\n state?: Partial;\n }) {\n super({\n name: controllerName,\n messenger,\n state: { ...getDefaultTokenRatesControllerState(), ...state },\n metadata: tokenRatesControllerMetadata,\n });\n\n this.setIntervalLength(interval);\n this.#tokenPricesService = tokenPricesService;\n this.#disabled = disabled;\n\n const { allTokens, allDetectedTokens } = this.#getTokensControllerState();\n this.#allTokens = allTokens;\n this.#allDetectedTokens = allDetectedTokens;\n\n // Set native asset identifiers from NetworkEnablementController for CAIP-19 native token lookups\n this.#initNativeAssetIdentifiers();\n\n this.#subscribeToTokensStateChange();\n\n this.#subscribeToNetworkStateChange();\n }\n\n #subscribeToTokensStateChange() {\n this.messenger.subscribe(\n 'TokensController:stateChange',\n // TODO: Either fix this lint violation or explain why it's necessary to ignore.\n // eslint-disable-next-line @typescript-eslint/no-misused-promises\n async ({ allTokens, allDetectedTokens }) => {\n if (this.#disabled) {\n return;\n }\n\n const { networkConfigurationsByChainId } = this.messenger.call(\n 'NetworkController:getState',\n );\n\n const chainIds = [\n ...new Set([\n ...Object.keys(allTokens),\n ...Object.keys(allDetectedTokens),\n ]),\n ] as Hex[];\n\n const chainIdsToUpdate = chainIds.filter(\n (chainId) =>\n !isEqual(this.#allTokens[chainId], allTokens[chainId]) ||\n !isEqual(\n this.#allDetectedTokens[chainId],\n allDetectedTokens[chainId],\n ),\n );\n\n this.#allTokens = allTokens;\n this.#allDetectedTokens = allDetectedTokens;\n\n const chainIdAndNativeCurrency = chainIdsToUpdate.reduce<\n { chainId: Hex; nativeCurrency: string }[]\n >((acc, chainId) => {\n const networkConfiguration = networkConfigurationsByChainId[chainId];\n if (!networkConfiguration) {\n console.error(\n `TokenRatesController: No network configuration found for chainId ${chainId}`,\n );\n return acc;\n }\n acc.push({\n chainId,\n nativeCurrency: networkConfiguration.nativeCurrency,\n });\n return acc;\n }, []);\n\n await this.updateExchangeRates(chainIdAndNativeCurrency);\n },\n ({ allTokens, allDetectedTokens }) => {\n return { allTokens, allDetectedTokens };\n },\n );\n }\n\n #subscribeToNetworkStateChange() {\n this.messenger.subscribe(\n 'NetworkController:stateChange',\n (_state, patches) => {\n // Remove state for deleted networks\n for (const patch of patches) {\n if (\n patch.op === 'remove' &&\n patch.path[0] === 'networkConfigurationsByChainId'\n ) {\n const removedChainId = patch.path[1] as Hex;\n this.update((state) => {\n delete state.marketData[removedChainId];\n });\n }\n }\n },\n );\n }\n\n /**\n * Initialize the native asset identifiers from NetworkEnablementController.\n * This provides CAIP-19 native asset IDs for the token prices service.\n */\n #initNativeAssetIdentifiers(): void {\n if (this.#tokenPricesService.setNativeAssetIdentifiers) {\n const { nativeAssetIdentifiers } = this.messenger.call(\n 'NetworkEnablementController:getState',\n );\n this.#tokenPricesService.setNativeAssetIdentifiers(\n nativeAssetIdentifiers,\n );\n }\n }\n\n /**\n * Get the tokens for the given chain.\n *\n * @param chainId - The chain ID.\n * @returns The list of tokens addresses for the current chain\n */\n #getTokenAddresses(chainId: Hex): Hex[] {\n const getTokens = (allTokens: Record) =>\n Object.values(allTokens ?? {}).flatMap((tokens) =>\n tokens.map(({ address }) => toChecksumHexAddress(address) as Hex),\n );\n\n const tokenAddresses = getTokens(this.#allTokens[chainId]);\n const detectedTokenAddresses = getTokens(this.#allDetectedTokens[chainId]);\n\n return [\n ...new Set([\n ...tokenAddresses,\n ...detectedTokenAddresses,\n getNativeTokenAddress(chainId),\n ]),\n ].sort();\n }\n\n /**\n * Allows controller to make active and passive polling requests\n */\n enable(): void {\n this.#disabled = false;\n }\n\n /**\n * Blocks controller from making network calls\n */\n disable(): void {\n this.#disabled = true;\n }\n\n #getTokensControllerState(): {\n allTokens: TokensControllerState['allTokens'];\n allDetectedTokens: TokensControllerState['allDetectedTokens'];\n } {\n const { allTokens, allDetectedTokens } = this.messenger.call(\n 'TokensController:getState',\n );\n\n return {\n allTokens,\n allDetectedTokens,\n };\n }\n\n /**\n * Updates exchange rates for all tokens.\n *\n * @param chainIdAndNativeCurrency - The chain ID and native currency.\n */\n async updateExchangeRates(\n chainIdAndNativeCurrency: ChainIdAndNativeCurrency[],\n ): Promise {\n if (this.#disabled) {\n return;\n }\n\n const marketData: Record> = {};\n const assetsByNativeCurrency: Record<\n string,\n {\n chainId: Hex;\n tokenAddress: Hex;\n }[]\n > = {};\n const unsupportedAssetsByNativeCurrency: Record<\n string,\n {\n chainId: Hex;\n tokenAddress: Hex;\n }[]\n > = {};\n for (const { chainId, nativeCurrency } of chainIdAndNativeCurrency) {\n if (this.#tokenPricesService.validateChainIdSupported(chainId)) {\n for (const tokenAddress of this.#getTokenAddresses(chainId)) {\n if (\n this.#tokenPricesService.validateCurrencySupported(nativeCurrency)\n ) {\n (assetsByNativeCurrency[nativeCurrency] ??= []).push({\n chainId,\n tokenAddress,\n });\n } else {\n (unsupportedAssetsByNativeCurrency[nativeCurrency] ??= []).push({\n chainId,\n tokenAddress,\n });\n }\n }\n }\n }\n\n const promises = [\n ...Object.entries(assetsByNativeCurrency).map(\n ([nativeCurrency, assets]) =>\n this.#fetchAndMapExchangeRatesForSupportedNativeCurrency(\n assets,\n nativeCurrency,\n marketData,\n ),\n ),\n ...Object.entries(unsupportedAssetsByNativeCurrency).map(\n ([nativeCurrency, assets]) =>\n this.#fetchAndMapExchangeRatesForUnsupportedNativeCurrency(\n assets,\n nativeCurrency,\n marketData,\n ),\n ),\n ];\n\n await Promise.allSettled(promises);\n\n const chainIds = new Set(\n Object.values(chainIdAndNativeCurrency).map((chain) => chain.chainId),\n );\n\n for (const chainId of chainIds) {\n if (!marketData[chainId]) {\n marketData[chainId] = {};\n }\n }\n\n if (Object.keys(marketData).length > 0) {\n this.update((state) => {\n state.marketData = {\n ...state.marketData,\n ...marketData,\n };\n });\n }\n }\n\n async #fetchAndMapExchangeRatesForSupportedNativeCurrency(\n assets: {\n chainId: Hex;\n tokenAddress: Hex;\n }[],\n currency: string,\n marketData: Record> = {},\n ) {\n return await reduceInBatchesSerially<\n { chainId: Hex; tokenAddress: Hex },\n Record>\n >({\n values: assets,\n batchSize: TOKEN_PRICES_BATCH_SIZE,\n eachBatch: async (partialMarketData, assetsBatch) => {\n const batchMarketData = await this.#tokenPricesService.fetchTokenPrices(\n {\n assets: assetsBatch,\n currency,\n },\n );\n\n for (const tokenPrice of batchMarketData) {\n (partialMarketData[tokenPrice.chainId] ??= {})[\n tokenPrice.tokenAddress\n ] = tokenPrice;\n }\n\n return partialMarketData;\n },\n initialResult: marketData,\n });\n }\n\n async #fetchAndMapExchangeRatesForUnsupportedNativeCurrency(\n assets: {\n chainId: Hex;\n tokenAddress: Hex;\n }[],\n currency: string,\n marketData: Record>,\n ) {\n // Step -1: Then fetch all tracked tokens priced in USD\n const marketDataInUSD =\n await this.#fetchAndMapExchangeRatesForSupportedNativeCurrency(\n assets,\n 'usd', // Fallback currency when the native currency is not supported\n );\n\n // Formula: price_in_native = token_usd / native_usd\n const convertUSDToNative = (\n valueInUSD: number,\n nativeTokenPriceInUSD: number,\n ) => valueInUSD / nativeTokenPriceInUSD;\n\n // Step -2: Convert USD prices to native currency\n for (const [chainId, marketDataByTokenAddress] of Object.entries(\n marketDataInUSD,\n ) as [Hex, Record][]) {\n const nativeTokenPriceInUSD =\n marketDataByTokenAddress[getNativeTokenAddress(chainId)]?.price;\n\n // Return here if it's null, undefined or 0\n if (!nativeTokenPriceInUSD) {\n continue;\n }\n\n for (const [tokenAddress, tokenData] of Object.entries(\n marketDataByTokenAddress,\n ) as [Hex, MarketDataDetails][]) {\n (marketData[chainId] ??= {})[tokenAddress] = {\n ...tokenData,\n currency,\n price: convertUSDToNative(tokenData.price, nativeTokenPriceInUSD),\n marketCap: convertUSDToNative(\n tokenData.marketCap,\n nativeTokenPriceInUSD,\n ),\n allTimeHigh: convertUSDToNative(\n tokenData.allTimeHigh,\n nativeTokenPriceInUSD,\n ),\n allTimeLow: convertUSDToNative(\n tokenData.allTimeLow,\n nativeTokenPriceInUSD,\n ),\n totalVolume: convertUSDToNative(\n tokenData.totalVolume,\n nativeTokenPriceInUSD,\n ),\n high1d: convertUSDToNative(tokenData.high1d, nativeTokenPriceInUSD),\n low1d: convertUSDToNative(tokenData.low1d, nativeTokenPriceInUSD),\n dilutedMarketCap: convertUSDToNative(\n tokenData.dilutedMarketCap,\n nativeTokenPriceInUSD,\n ),\n };\n }\n }\n }\n\n /**\n * Updates token rates for the given networkClientId\n *\n * @param input - The input for the poll.\n * @param input.chainIds - The chain ids to poll token rates on.\n */\n async _executePoll({ chainIds }: TokenRatesPollingInput): Promise {\n const { networkConfigurationsByChainId } = this.messenger.call(\n 'NetworkController:getState',\n );\n\n const chainIdAndNativeCurrency = chainIds.reduce<\n { chainId: Hex; nativeCurrency: string }[]\n >((acc, chainId) => {\n const networkConfiguration = networkConfigurationsByChainId[chainId];\n if (!networkConfiguration) {\n console.error(\n `TokenRatesController: No network configuration found for chainId ${chainId}`,\n );\n return acc;\n }\n acc.push({\n chainId,\n nativeCurrency: networkConfiguration.nativeCurrency,\n });\n return acc;\n }, []);\n\n await this.updateExchangeRates(chainIdAndNativeCurrency);\n }\n\n /**\n * Reset the controller state to the default state.\n */\n resetState() {\n this.update(() => {\n return getDefaultTokenRatesControllerState();\n });\n }\n}\n\nexport default TokenRatesController;\n"]}