app/phpmon/Common/Testables/TestableConfiguration.swift

//
//  TestableConfiguration.swift
//  PHP Monitor
//
//  Created by Nico Verbruggen on 16/10/2022.
//  Copyright © 2023 Nico Verbruggen. All rights reserved.
//

import Foundation

public struct TestableConfiguration: Codable {
    var architecture: String
    var filesystem: [String: FakeFile]
    var shellOutput: [String: BatchFakeShellOutput]
    var commandOutput: [String: String]
    var preferenceOverrides: [PreferenceName: Bool]

    func apply() {
        Log.separator()
        Log.info("USING TESTABLE CONFIGURATION...")
        Log.separator()
        Log.info("Applying fake shell...")
        ActiveShell.useTestable(shellOutput)
        Log.info("Applying fake filesystem...")
        ActiveFileSystem.useTestable(filesystem)
        Log.info("Applying fake commands...")
        ActiveCommand.useTestable(commandOutput)
        Log.info("Applying temporary preference overrides...")
        preferenceOverrides.forEach { (key: PreferenceName, value: Any?) in
            Preferences.shared.cachedPreferences[key] = value
        }

        if Valet.shared.installed {
            Log.info("Applying fake scanner...")
            ValetScanner.useFake()
            Log.info("Applying fake services manager...")
            ServicesManager.useFake()
            Log.info("Applying fake Valet domain interactor...")
            ValetInteractor.useFake()
        }
    }

    func toJson(pretty: Bool = false) -> String {
        let data = try! JSONEncoder().encode(self)

        if pretty {
            return data.prettyPrintedJSONString! as String
        }

        return String(data: data, encoding: .utf8)!
    }

    static func loadFrom(path: String) -> TestableConfiguration {
        let url = URL(fileURLWithPath: path.replacingTildeWithHomeDirectory)

        if !FileManager.default.fileExists(atPath: url.path) {
            /*
             You will need to run the `TestableConfigurationTest` test,
             which will generate two configuration files you can use.
             */
            fatalError("Error: the expected configuration file at \(url.path) is missing!")
        }

        /*
         If the decoder below fails to decode the configuration file,
         the configuration may have been updated.
         In that case, you will need to run the test (see above) again.
         */
        return try! JSONDecoder().decode(
            TestableConfiguration.self,
            from: try! String(contentsOf: url, encoding: .utf8).data(using: .utf8)!
        )
    }
}