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get rid of AppDatabase in favour of free functions
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| import Foundation | ||
| import GRDB | ||
| import os | ||
|
|
||
| func createAppDatabase() -> some DatabaseWriter { | ||
| do { | ||
| // Apply recommendations from | ||
| // <https://swiftpackageindex.com/groue/grdb.swift/documentation/grdb/databaseconnections> | ||
| // | ||
| // Create the "Application Support/Database" directory if needed | ||
| let fileManager = FileManager.default | ||
| let appSupportURL = try fileManager.url( | ||
| for: .applicationSupportDirectory, in: .userDomainMask, | ||
| appropriateFor: nil, create: true) | ||
| let directoryURL = appSupportURL.appendingPathComponent("Database", isDirectory: true) | ||
|
|
||
| // Support for tests: delete the database if requested | ||
| if CommandLine.arguments.contains("-reset") { | ||
| try? fileManager.removeItem(at: directoryURL) | ||
| } | ||
|
|
||
| // Create the database folder if needed | ||
| try fileManager.createDirectory(at: directoryURL, withIntermediateDirectories: true) | ||
|
|
||
| // Open or create the database | ||
| let databaseURL = directoryURL.appendingPathComponent("db.sqlite") | ||
| NSLog("Database stored at \(databaseURL.path)") | ||
| let dbPool = try DatabasePool( | ||
| path: databaseURL.path, | ||
| // Use default AppDatabase configuration | ||
| configuration: createDatabaseConfiguration() | ||
| ) | ||
|
|
||
| // Create the AppDatabase | ||
| try setupDatabase(dbPool) | ||
|
|
||
| return dbPool | ||
| } catch { | ||
| // Replace this implementation with code to handle the error appropriately. | ||
| // fatalError() causes the application to generate a crash log and terminate. | ||
| // | ||
| // Typical reasons for an error here include: | ||
| // * The parent directory cannot be created, or disallows writing. | ||
| // * The database is not accessible, due to permissions or data protection when the device is locked. | ||
| // * The device is out of space. | ||
| // * The database could not be migrated to its latest schema version. | ||
| // Check the error message to determine what the actual problem was. | ||
| fatalError("Unresolved error \(error)") | ||
| } | ||
| } | ||
|
|
||
| fileprivate func setupDatabase(_ writer: any DatabaseWriter) throws { | ||
| var migrator = DatabaseMigrator() | ||
|
|
||
| #if DEBUG | ||
| // Speed up development by nuking the database when migrations change | ||
| // See <https://swiftpackageindex.com/groue/grdb.swift/documentation/grdb/migrations> | ||
| migrator.eraseDatabaseOnSchemaChange = true | ||
| #endif | ||
|
|
||
| migrator.registerMigration("createFood") { db in | ||
| // Create a table | ||
| // See <https://swiftpackageindex.com/groue/grdb.swift/documentation/grdb/databaseschema> | ||
| try db.create(table: "food") { t in | ||
| t.autoIncrementedPrimaryKey("id") | ||
| t.column("name", .text).notNull().unique(onConflict: .replace) | ||
| t.column("energy", .double) | ||
| t.column("fatTotal", .double) | ||
| t.column("fatSaturated", .double) | ||
| t.column("protein", .double) | ||
| t.column("sodium", .double) | ||
| t.column("potassium", .double) | ||
| t.column("cholesterol", .double) | ||
| t.column("carbohydrates", .double) | ||
| t.column("fiber", .double) | ||
| t.column("sugar", .double) | ||
| } | ||
| } | ||
|
|
||
| // Migrations for future application versions will be inserted here: | ||
| // migrator.registerMigration(...) { db in | ||
| // ... | ||
| // } | ||
|
|
||
| try migrator.migrate(writer) | ||
| } | ||
|
|
||
| fileprivate func createDatabaseConfiguration(_ base: Configuration = Configuration()) -> Configuration { | ||
| var config = base | ||
|
|
||
| // An opportunity to add required custom SQL functions or | ||
| // collations, if needed: | ||
| // config.prepareDatabase { db in | ||
| // db.add(function: ...) | ||
| // } | ||
|
|
||
| // Log SQL statements if the `SQL_TRACE` environment variable is set. | ||
| // See <https://swiftpackageindex.com/groue/grdb.swift/documentation/grdb/database/trace(options:_:)> | ||
| if ProcessInfo.processInfo.environment["SQL_TRACE"] != nil { | ||
| let sqlLogger = Logger(subsystem: Bundle.main.bundleIdentifier!, category: "GRDB") | ||
| config.prepareDatabase { db in | ||
| db.trace { | ||
| sqlLogger.log(level: .debug, "\($0)") | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #if DEBUG | ||
| // Protect sensitive information by enabling verbose debugging in | ||
| // DEBUG builds only. | ||
| // See <https://swiftpackageindex.com/groue/grdb.swift/documentation/grdb/configuration/publicstatementarguments> | ||
| config.publicStatementArguments = true | ||
| #endif | ||
|
|
||
| return config | ||
| } |
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