passepartout-apple/Passepartout/Sources/Model/ConnectionService+Migration...

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//
// ConnectionService+Migration.swift
// Passepartout
//
// Created by Davide De Rosa on 10/25/18.
// Copyright (c) 2018 Davide De Rosa. All rights reserved.
//
// https://github.com/keeshux
//
// This file is part of Passepartout.
//
// Passepartout is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Passepartout is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Passepartout. If not, see <http://www.gnu.org/licenses/>.
//
import Foundation
import SwiftyBeaver
private let log = SwiftyBeaver.self
extension ConnectionService {
static func migrateJSON(from: URL, to: URL) {
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do {
let newData = try migrateJSON(at: from)
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// log.verbose(String(data: newData, encoding: .utf8)!)
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try newData.write(to: to)
} catch let e {
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log.error("Could not migrate service: \(e)")
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}
}
static func migrateJSON(at url: URL) throws -> Data {
let data = try Data(contentsOf: url)
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guard var json = try JSONSerialization.jsonObject(with: data, options: []) as? [String: Any] else {
throw ApplicationError.migration
}
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// put migration logic here
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let _ = json["build"] as? Int ?? 0
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return try JSONSerialization.data(withJSONObject: json, options: [])
}
}