zeus
105 lines
3.6 KiB
Swift
105 lines
3.6 KiB
Swift
import GRDB
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/// The Player struct.
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///
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/// Identifiable conformance supports type-safe GRDB primary key methods.
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/// Hashable conformance supports table view updates
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struct Player: Identifiable, Hashable {
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/// The player id.
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///
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/// Int64 is the recommended type for auto-incremented database ids.
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/// Use nil for players that are not inserted yet in the database.
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var id: Int64?
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var name: String
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var score: Int
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}
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extension Player {
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private static let names = [
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"Arthur", "Anita", "Barbara", "Bernard", "Craig", "Chiara", "David",
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"Dean", "Éric", "Elena", "Fatima", "Frederik", "Gilbert", "Georgette",
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"Henriette", "Hassan", "Ignacio", "Irene", "Julie", "Jack", "Karl",
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"Kristel", "Louis", "Liz", "Masashi", "Mary", "Noam", "Nicole",
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"Ophelie", "Oleg", "Pascal", "Patricia", "Quentin", "Quinn", "Raoul",
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"Rachel", "Stephan", "Susie", "Tristan", "Tatiana", "Ursule", "Urbain",
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"Victor", "Violette", "Wilfried", "Wilhelmina", "Yvon", "Yann",
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"Zazie", "Zoé"]
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/// Creates a new player with empty name and zero score
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static func new() -> Player {
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Player(id: nil, name: "", score: 0)
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}
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/// Creates a new player with random name and random score
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static func makeRandom() -> Player {
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Player(id: nil, name: randomName(), score: randomScore())
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}
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/// Returns a random name
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static func randomName() -> String {
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names.randomElement()!
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}
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/// Returns a random score
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static func randomScore() -> Int {
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10 * Int.random(in: 0...100)
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}
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}
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// MARK: - Persistence
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/// Make Player a Codable Record.
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///
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/// See <https://github.com/groue/GRDB.swift/blob/master/README.md#records>
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extension Player: Codable, FetchableRecord, MutablePersistableRecord {
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// Define database columns from CodingKeys
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fileprivate enum Columns {
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static let name = Column(CodingKeys.name)
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static let score = Column(CodingKeys.score)
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}
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/// Updates a player id after it has been inserted in the database.
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mutating func didInsert(_ inserted: InsertionSuccess) {
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id = inserted.rowID
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}
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}
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// MARK: - Player Database Requests
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/// Define some player requests used by the application.
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///
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/// See <https://swiftpackageindex.com/groue/grdb.swift/documentation/grdb/recordrecommendedpractices>
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extension DerivableRequest<Player> {
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/// A request of players ordered by name.
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///
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/// For example:
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///
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/// let players: [Player] = try dbWriter.read { db in
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/// try Player.all().orderedByName().fetchAll(db)
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/// }
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func orderedByName() -> Self {
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// Sort by name in a localized case insensitive fashion
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// See https://github.com/groue/GRDB.swift/blob/master/README.md#string-comparison
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order(Player.Columns.name.collating(.localizedCaseInsensitiveCompare))
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}
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/// A request of players ordered by score.
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///
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/// For example:
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///
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/// let players: [Player] = try dbWriter.read { db in
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/// try Player.all().orderedByScore().fetchAll(db)
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/// }
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/// let bestPlayer: Player? = try dbWriter.read { db in
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/// try Player.all().orderedByScore().fetchOne(db)
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/// }
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func orderedByScore() -> Self {
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// Sort by descending score, and then by name, in a
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// localized case insensitive fashion
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// See https://github.com/groue/GRDB.swift/blob/master/README.md#string-comparison
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order(
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Player.Columns.score.desc,
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Player.Columns.name.collating(.localizedCaseInsensitiveCompare))
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}
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}
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