zeus
78 lines
3.4 KiB
Swift
78 lines
3.4 KiB
Swift
import Foundation
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import GRDB
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extension AppDatabase {
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/// The database for the application
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static let shared = makeShared()
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private static func makeShared() -> AppDatabase {
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do {
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// Apply recommendations from
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// <https://swiftpackageindex.com/groue/grdb.swift/documentation/grdb/databaseconnections>
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//
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// Create the "Application Support/Database" directory if needed
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let fileManager = FileManager.default
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let appSupportURL = try fileManager.url(
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for: .applicationSupportDirectory, in: .userDomainMask,
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appropriateFor: nil, create: true)
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let directoryURL = appSupportURL.appendingPathComponent("Database", isDirectory: true)
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// Support for tests: delete the database if requested
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if CommandLine.arguments.contains("-reset") {
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try? fileManager.removeItem(at: directoryURL)
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}
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// Create the database folder if needed
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try fileManager.createDirectory(at: directoryURL, withIntermediateDirectories: true)
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// Open or create the database
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let databaseURL = directoryURL.appendingPathComponent("db.sqlite")
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NSLog("Database stored at \(databaseURL.path)")
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let dbPool = try DatabasePool(
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path: databaseURL.path,
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// Use default AppDatabase configuration
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configuration: AppDatabase.makeConfiguration())
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// Create the AppDatabase
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let appDatabase = try AppDatabase(dbPool)
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// Prepare the database with test fixtures if requested
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if CommandLine.arguments.contains("-fixedTestData") {
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try appDatabase.createPlayersForUITests()
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} else {
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// Otherwise, populate the database if it is empty, for better
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// demo purpose.
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try appDatabase.createRandomPlayersIfEmpty()
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}
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return appDatabase
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} catch {
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// Replace this implementation with code to handle the error appropriately.
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// fatalError() causes the application to generate a crash log and terminate.
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//
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// Typical reasons for an error here include:
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// * The parent directory cannot be created, or disallows writing.
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// * The database is not accessible, due to permissions or data protection when the device is locked.
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// * The device is out of space.
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// * The database could not be migrated to its latest schema version.
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// Check the error message to determine what the actual problem was.
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fatalError("Unresolved error \(error)")
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}
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}
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/// Creates an empty database for SwiftUI previews
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static func empty() -> AppDatabase {
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// Connect to an in-memory database
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// See https://swiftpackageindex.com/groue/grdb.swift/documentation/grdb/databaseconnections
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let dbQueue = try! DatabaseQueue(configuration: AppDatabase.makeConfiguration())
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return try! AppDatabase(dbQueue)
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}
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/// Creates a database full of random players for SwiftUI previews
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static func random() -> AppDatabase {
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let appDatabase = empty()
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try! appDatabase.createRandomPlayersIfEmpty()
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return appDatabase
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}
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}
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