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duplicate IDs and repository create #82

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merged 1 commit into from
May 10, 2024
Merged

duplicate IDs and repository create #82

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12 changes: 12 additions & 0 deletions Sources/AutomergeRepo/Errors.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -93,4 +93,16 @@ public enum Errors: Sendable {
self.msg = msg
}
}

/// The ID of the document already exists within the repository
public struct DuplicateID: Sendable, LocalizedError {
public var id: DocumentId
public var errorDescription: String? {
"The ID of the document \(id) already exists within the repository."
}

public init(id: DocumentId) {
self.id = id
}
}
}
9 changes: 9 additions & 0 deletions Sources/AutomergeRepo/Repo.swift
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Expand Up @@ -469,6 +469,9 @@ public final class Repo {
/// - Returns: The Automerge document.
/// - Parameter id: The Id of the Automerge document.
public func create(id: DocumentId) async throws -> DocHandle {
if let existing = handles[id] {
throw Errors.DuplicateID(id: id)
}
let handle = InternalDocHandle(id: id, isNew: true, initialValue: Document())
handles[handle.id] = handle
docHandlePublisher.send(handle.snapshot())
Expand All @@ -480,6 +483,9 @@ public final class Repo {
/// - Parameter doc: The Automerge document to use for the new, shared document
/// - Returns: The Automerge document.
public func create(doc: Document, id: DocumentId? = nil) async throws -> DocHandle {
if let providedId = id, let existing = handles[providedId] {
throw Errors.DuplicateID(id: providedId)
}
let creationId = id ?? DocumentId()
let handle = InternalDocHandle(id: creationId, isNew: true, initialValue: doc)
handles[handle.id] = handle
Expand All @@ -492,6 +498,9 @@ public final class Repo {
/// - Parameter data: The data to load as an Automerge document for the new, shared document.
/// - Returns: The Automerge document.
public func create(data: Data, id: DocumentId? = nil) async throws -> DocHandle {
if let providedId = id, let existing = handles[providedId] {
throw Errors.DuplicateID(id: providedId)
}
let creationId = id ?? DocumentId()
let handle = try InternalDocHandle(id: creationId, isNew: true, initialValue: Document(data))
handles[handle.id] = handle
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