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#54 Public account type
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /** | ||
| A value that identifies an account in any given blockchain. | ||
| This structure parses account IDs according to [CAIP-10]. | ||
| Account IDs are prefixed with a [CAIP-2] blockchain ID, delimited by a `':'` character, followed by the account address. | ||
| Specifying a blockchain account by using a chain-agnostic identifier is useful to allow interoperability between multiple | ||
| chains when using both wallets and decentralized applications. | ||
| [CAIP-2]:https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-2.md | ||
| [CAIP-10]:https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-10.md | ||
| */ | ||
| public struct Account: Equatable, Hashable { | ||
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| /// A blockchain namespace. Usually describes an ecosystem or standard. | ||
| public let namespace: String | ||
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| /// A reference string that identifies a blockchain within a given namespace. | ||
| public let reference: String | ||
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| /// The account's address specific to the blockchain. | ||
| public let address: String | ||
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| /// The CAIP-2 blockchain identifier of the account. | ||
| public var blockchainIdentifier: String { | ||
| "\(namespace):\(reference)" | ||
| } | ||
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| /// The CAIP-10 account identifier absolute string. | ||
| public var absoluteString: String { | ||
| "\(namespace):\(reference):\(address)" | ||
| } | ||
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| /// Returns whether the account conforms to CAIP-10. | ||
| public var isCAIP10Conformant: Bool { | ||
| String.conformsToCAIP10(absoluteString) | ||
| } | ||
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| /** | ||
| Creates an account instance from the provided string. | ||
| This initializer returns nil if the string doesn't represent a valid account id in conformance with | ||
| [CAIP-10](https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-10.md). | ||
| */ | ||
| public init?(_ string: String) { | ||
| guard String.conformsToCAIP10(string) else { return nil } | ||
| let splits = string.split(separator: ":") | ||
| self.init(namespace: String(splits[0]), reference: String(splits[1]), address: String(splits[2])) | ||
| } | ||
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| /** | ||
| Creates an account instance from a chain ID and an address. | ||
| This initializer returns nil if the `chainIdentifier` parameter doesn't represent a valid chain id in conformance with | ||
| [CAIP-2](https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-2.md) or if the `address` format is invalid. | ||
| */ | ||
| public init?(chainIdentifier: String, address: String) { | ||
| self.init("\(chainIdentifier):\(address)") | ||
| } | ||
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| /** | ||
| Creates an account instance directly from the base components. | ||
| This initializer bypass any checks to CAIP conformance, make sure to pass valid values as parameters. | ||
| */ | ||
| public init(namespace: String, reference: String, address: String) { | ||
| self.namespace = namespace | ||
| self.reference = reference | ||
| self.address = address | ||
| } | ||
| } | ||
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| extension Account: LosslessStringConvertible { | ||
| public var description: String { | ||
| return absoluteString | ||
| } | ||
| } | ||
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| extension Account: Codable { | ||
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| public init(from decoder: Decoder) throws { | ||
| let container = try decoder.singleValueContainer() | ||
| let absoluteString = try container.decode(String.self) | ||
| guard let account = Account(absoluteString) else { | ||
| throw DecodingError.dataCorruptedError(in: container, debugDescription: "Malformed CAIP-10 account identifier.") | ||
| } | ||
| self = account | ||
| } | ||
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| public func encode(to encoder: Encoder) throws { | ||
| var container = encoder.singleValueContainer() | ||
| try container.encode(absoluteString) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| import XCTest | ||
| @testable import WalletConnect | ||
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| final class AccountTests: XCTestCase { | ||
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| func testInitFromString() { | ||
| // Valid accounts | ||
| XCTAssertNotNil(Account("std:0:0")) | ||
| XCTAssertNotNil(Account("chainstd:8c3444cf8970a9e41a706fab93e7a6c4:6d9b0b4b9994e8a6afbd3dc3ed983cd51c755afb27cd1dc7825ef59c134a39f7")) | ||
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| // Invalid accounts | ||
| XCTAssertNil(Account("std:0:$")) | ||
| XCTAssertNil(Account("std:$:0")) | ||
| XCTAssertNil(Account("st:0:0")) | ||
| } | ||
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| func testInitFromChainAndAddress() { | ||
| // Valid accounts | ||
| XCTAssertNotNil(Account(chainIdentifier: "std:0", address: "0")) | ||
| XCTAssertNotNil(Account(chainIdentifier: "chainstd:8c3444cf8970a9e41a706fab93e7a6c4", address: "6d9b0b4b9994e8a6afbd3dc3ed983cd51c755afb27cd1dc7825ef59c134a39f7")) | ||
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| // Invalid accounts | ||
| XCTAssertNil(Account(chainIdentifier: "std:0", address: "")) | ||
| XCTAssertNil(Account(chainIdentifier: "std", address: "0")) | ||
| } | ||
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| func testInitCAIP10Conformance() { | ||
| XCTAssertTrue(Account(namespace: "std", reference: "0", address: "0").isCAIP10Conformant) | ||
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| XCTAssertFalse(Account(namespace: "st", reference: "0", address: "0").isCAIP10Conformant) | ||
| XCTAssertFalse(Account(namespace: "std", reference: "", address: "0").isCAIP10Conformant) | ||
| XCTAssertFalse(Account(namespace: "std", reference: "0", address: "").isCAIP10Conformant) | ||
| } | ||
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| func testBlockchainIdentifier() { | ||
| let account = Account("eip155:1:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb")! | ||
| XCTAssertEqual(account.blockchainIdentifier, "eip155:1") | ||
| } | ||
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| func testAbsoluteString() { | ||
| let accountString = "eip155:1:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb" | ||
| let account = Account(accountString)! | ||
| XCTAssertEqual(account.absoluteString, accountString) | ||
| } | ||
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| func testCodable() throws { | ||
| let account = Account("eip155:1:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb")! | ||
| let encoded = try JSONEncoder().encode(account) | ||
| let decoded = try JSONDecoder().decode(Account.self, from: encoded) | ||
| XCTAssertEqual(account, decoded) | ||
| } | ||
| } |