import Foundation
import Testing
import IndieSync
@testable import Workouts

/// Round-trips `SplitDocument` through `DocumentCoder` — the exact JSON codec
/// (ISO-8601 dates, sorted keys, pretty-printed) `DocumentFileStore` uses to
/// write and read every document in this app's iCloud container.
struct SplitDocumentCodableTests {
    /// A whole-second epoch so ISO-8601 round-trips (no fractional-second loss).
    private static let stableTimestamp = Date(timeIntervalSince1970: 1_700_000_000)

    @Test func encodeDecodeRoundTrip() throws {
        let exercise = ExerciseDocument(
            id: ULID.make(),
            name: "Bench Press",
            order: 0,
            sets: 4,
            reps: 10,
            weight: 135,
            loadType: 0,
            durationSeconds: 0,
            weightLastUpdated: Self.stableTimestamp,
            weightReminderWeeks: 4
        )
        let original = SplitDocument(
            schemaVersion: SplitDocument.currentSchemaVersion,
            id: ULID.make(),
            name: "Push Day",
            color: "blue",
            systemImage: "dumbbell.fill",
            order: 0,
            createdAt: Self.stableTimestamp,
            updatedAt: Self.stableTimestamp,
            exercises: [exercise],
            activityType: nil
        )

        let data = try DocumentCoder.encode(original)
        let decoded = try DocumentCoder.decode(SplitDocument.self, from: data)

        #expect(decoded == original)
        #expect(decoded.relativePath == "Splits/\(original.id).json")
    }
}