scaffold basic structure

1 files changed, 65 insertions, 0 deletions

diff --git a/Sources/phbar/Models/Block.swift b/Sources/phbar/Models/Block.swift
new file mode 100644
index 0000000..7eca7c9
--- /dev/null
+++ b/Sources/phbar/Models/Block.swift
@@ -0,0 +1,65 @@
+import Foundation
+
+@MainActor
+final class Block: ObservableObject, Identifiable {
+	let id = UUID()
+
+	let name: String
+	let placement: Config.Block.Placement
+	let command: String
+	let interval: Double?
+
+	@Published var cells: [String] = []
+
+	private var tick: Task<Void, Never>?
+
+	init(name: String, placement: Config.Block.Placement, command: String, interval: Double? = nil) {
+		self.name = name
+		self.placement = placement
+		self.command = command
+		self.interval = interval
+	}
+
+	/// Initial paint + interval timer.
+	func start() {
+		runScript()
+		startTick()
+	}
+
+	/// Re-run the command and update the cells on the main actor.
+	func runScript() {
+		let command = self.command
+		Task.detached(priority: .utility) { [weak self] in
+			let cells = Runner.run(command)
+			await self?.apply(cells)
+		}
+	}
+
+	/// Stop the interval timer.
+	func stop() {
+		tick?.cancel()
+	}
+
+	@MainActor
+	private func apply(_ cells: [String]) {
+		self.cells = cells
+	}
+
+	private func startTick() {
+		guard let interval, interval > 0 else { return }
+		tick = Task { [weak self] in
+			while !Task.isCancelled {
+				try? await Task.sleep(for: .seconds(interval))
+				if Task.isCancelled { break }
+				self?.runScript()
+			}
+		}
+	}
+}
+
+extension Config.Block {
+	@MainActor
+	var resolved: phbar.Block {
+		.init(name: name, placement: placement, command: command, interval: interval)
+	}
+}