import XCTest
@testable import KisaniCal

/// Natural-language recurrence detection in the quick-add parser.
final class NLRecurrenceParseTests: XCTestCase {

    private func label(_ s: String) -> String? {
        NLTaskParser.parse(s).recurrenceLabel
    }

    func testDailyVariants() {
        XCTAssertEqual(label("remind me to pray everyday"), "Daily")   // the reported case
        XCTAssertEqual(label("remind me to pray every day"), "Daily")
        XCTAssertEqual(label("stretch daily"), "Daily")
        XCTAssertEqual(label("read each day"), "Daily")
    }

    func testWeekdayVsWeekly() {
        XCTAssertEqual(label("standup every weekday"), "Every Weekday")
        XCTAssertEqual(label("standup weekdays"), "Every Weekday")
        XCTAssertEqual(label("groceries every week"), "Weekly")
        XCTAssertEqual(label("groceries weekly"), "Weekly")
    }

    func testMonthlyYearly() {
        XCTAssertEqual(label("pay rent every month"), "Monthly")
        XCTAssertEqual(label("pay rent monthly"), "Monthly")
        XCTAssertEqual(label("renew every year"), "Yearly")
        XCTAssertEqual(label("renew annually"), "Yearly")
        XCTAssertEqual(label("file taxes yearly"), "Yearly")
    }

    func testBirthdayIsYearly() {
        let p = NLTaskParser.parse("Jay's birthday")
        XCTAssertTrue(p.isBirthday)
        XCTAssertTrue(p.isRecurring)
        XCTAssertEqual(p.recurrenceLabel, "Yearly")
    }

    func testNonRecurringStaysNil() {
        XCTAssertNil(label("buy milk"))
        XCTAssertNil(label("call mom tomorrow"))
    }

    /// Sub-day cadence isn't supported by the (day-granular) occurrence engine, so it
    /// must NOT be mislabeled as Daily/etc. — it stays a one-off.
    func testHourlyIsNotMisclassified() {
        XCTAssertNil(label("drink water every hour"))
        XCTAssertNil(label("check oven hourly"))
    }
}