alexandrev-tibco
eee0910680
Funde 1.5.1 en 1.6.0. Parte 1 dedup (prevención): StableID (UUIDv5 namespace+nombre), Account.defaultAccountStableID, Category.stableID(for:) + asignación en createDefaultCategories. Pendiente: asignar en repos + limpieza de duplicados existentes. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01L2p3gUZRNWW388rWFRjiU7
33 lines
1.6 KiB
Swift
33 lines
1.6 KiB
Swift
import Foundation
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import CryptoKit
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/// Deterministic UUIDs (RFC 4122 v5) for records that every device/install must
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/// create identically — the default Account and the default Categories.
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///
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/// Why: `awakeFromInsert()` assigns a random UUID, so each device seeded its own
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/// "Default" account + default categories with *different* UUIDs before the first
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/// CloudKit import. CloudKit keys on the UUID (record name), so those identical-in-
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/// meaning records piled up as distinct records (8 accounts, 23 categories in the
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/// wild). Giving the defaults a STABLE UUID derived from a fixed namespace + name
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/// means every device produces the SAME record name → CloudKit natively merges
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/// them into one. No dedup, no deletes, no cascade — the root-cause fix.
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enum StableID {
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/// Fixed app namespace (generated once, constant forever — never change it).
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static let namespace = UUID(uuidString: "F3A1C2D4-5E6F-4A7B-8C9D-0E1F2A3B4C5D")!
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/// RFC 4122 v5 UUID: SHA-1(namespace bytes ‖ name) with version/variant bits set.
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static func v5(_ name: String) -> UUID {
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var hasher = Insecure.SHA1()
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withUnsafeBytes(of: namespace.uuid) { hasher.update(bufferPointer: $0) }
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hasher.update(data: Data(name.utf8))
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let digest = Array(hasher.finalize()) // 20 bytes; take first 16
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var b = Array(digest.prefix(16))
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b[6] = (b[6] & 0x0F) | 0x50 // version 5
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b[8] = (b[8] & 0x3F) | 0x80 // RFC 4122 variant
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return UUID(uuid: (b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
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b[8], b[9], b[10], b[11], b[12], b[13], b[14], b[15]))
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}
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}
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