import Foundation
import Testing

@testable import NorgKit

struct TaskStatusTests {

  @Test func parsesEveryMarker() {
    #expect(TaskStatus(marker: " ") == .undone)
    #expect(TaskStatus(marker: "x") == .done)
    #expect(TaskStatus(marker: "?") == .needsInput)
    #expect(TaskStatus(marker: "!") == .urgent)
    #expect(TaskStatus(marker: "+") == .recurring)
    #expect(TaskStatus(marker: "-") == .pending)
    #expect(TaskStatus(marker: "=") == .onHold)
    #expect(TaskStatus(marker: "_") == .cancelled)
  }

  @Test func rejectsUnknownMarker() {
    #expect(TaskStatus(marker: "z") == nil)
  }

  @Test func parsesEveryMarkerByte() {
    #expect(TaskStatus(markerByte: UInt8(ascii: " ")) == .undone)
    #expect(TaskStatus(markerByte: UInt8(ascii: "x")) == .done)
    #expect(TaskStatus(markerByte: UInt8(ascii: "?")) == .needsInput)
    #expect(TaskStatus(markerByte: UInt8(ascii: "!")) == .urgent)
    #expect(TaskStatus(markerByte: UInt8(ascii: "+")) == .recurring)
    #expect(TaskStatus(markerByte: UInt8(ascii: "-")) == .pending)
    #expect(TaskStatus(markerByte: UInt8(ascii: "=")) == .onHold)
    #expect(TaskStatus(markerByte: UInt8(ascii: "_")) == .cancelled)
  }

  @Test func rejectsUnknownMarkerByte() {
    #expect(TaskStatus(markerByte: UInt8(ascii: "z")) == nil)
  }

  @Test func idEqualsRawValue() {
    for status in TaskStatus.allCases {
      #expect(status.id == status.rawValue)
    }
  }

  @Test func rawValuesMatchMarkers() {
    #expect(TaskStatus.undone.rawValue == " ")
    #expect(TaskStatus.done.rawValue == "x")
    #expect(TaskStatus.allCases.count == 8)
  }

  @Test func roundTripsThroughJSON() throws {
    let data = try JSONEncoder().encode(TaskStatus.urgent)
    #expect(try JSONDecoder().decode(TaskStatus.self, from: data) == .urgent)
  }
}