import XCTest
@testable import KisaniCal

/// Adapter tests: exercise reduction (identity + volume), inclusive day-key
/// ranges, and app-data → DaySample mapping (rest/missing/scheduled handling).
final class AnalyticsAdapterTests: XCTestCase {

    private func cal() -> Calendar {
        var c = Calendar(identifier: .gregorian)
        c.timeZone = TimeZone(identifier: "UTC")!
        c.locale = Locale(identifier: "en_US_POSIX")
        return c
    }

    func testExerciseSampleReduction() {
        let es = WorkoutAnalyticsAdapter.exerciseSample(name: "  Bench  Press ",
                                                        completedSets: [(60, 10), (60, 8), (70, 6)])
        XCTAssertEqual(es.identity, "bench press")
        XCTAssertEqual(es.sets, 3)
        XCTAssertEqual(es.reps, 24)
        XCTAssertEqual(es.volume, 1500)   // 600 + 480 + 420
    }

    func testInclusiveDayKeys() {
        let c = cal()
        let start = Date(timeIntervalSince1970: 1_783_500_000) // 2026-07-08
        let keys = WorkoutAnalyticsAdapter.dayKeys(from: start, to: c.date(byAdding: .day, value: 6, to: start)!, calendar: c)
        XCTAssertEqual(keys.count, 7)
        XCTAssertEqual(keys, keys.sorted())
    }

    func testDaySampleMapping() {
        let c = cal()
        let start = Date(timeIntervalSince1970: 1_783_500_000)
        let keys = WorkoutAnalyticsAdapter.dayKeys(from: start, to: c.date(byAdding: .day, value: 6, to: start)!, calendar: c)
        let es = WorkoutAnalyticsAdapter.exerciseSample(name: "Squat", completedSets: [(100, 5), (100, 5)])
        let raw = RawWorkoutDay(dateKey: keys[0], didWorkout: true, sessions: 1, durationMinutes: 45, exercises: [es])
        let samples = WorkoutAnalyticsAdapter.daySamples(
            dayKeys: keys,
            workouts: [keys[0]: raw],
            scheduledKeys: [keys[0], keys[2]],
            health: [keys[0]: RawHealthDay(steps: 8000, activeCalories: 500, restingHeartRate: 55)])

        XCTAssertEqual(samples.count, 7)
        XCTAssertTrue(samples[0].didWorkout)
        XCTAssertEqual(samples[0].volume, 1000)
        XCTAssertTrue(samples[0].scheduled)
        XCTAssertEqual(samples[0].steps, 8000)
        XCTAssertFalse(samples[1].didWorkout)          // rest / missing
        XCTAssertEqual(samples[1].volume, 0)
        XCTAssertNil(samples[1].steps)                 // honest: no fabricated data
        XCTAssertTrue(samples[2].scheduled && !samples[2].didWorkout) // scheduled but missed
    }

    func testWeekAndMonthDayKeys() {
        let c = cal()
        let d = Date(timeIntervalSince1970: 1_783_500_000)
        XCTAssertEqual(WorkoutAnalyticsAdapter.weekDayKeys(containing: d, calendar: c).count, 7)
        XCTAssertEqual(WorkoutAnalyticsAdapter.monthDayKeys(containing: d, calendar: c).count, 31) // July
    }
}