//
//  ItineraryEdgeCaseTests.swift
//  SportsTimeTests
//
//  Tests for edge cases in itinerary display and manipulation.
//

import XCTest
@testable import SportsTime

private typealias H = ItineraryTestHelpers

final class ItineraryEdgeCaseTests: XCTestCase {

    private let testDate = H.testDate

    // MARK: - Empty/Minimal Day Tests

    func test_emptyDay_onlyShowsHeader() {
        // Given: A day with no games and no items
        let dayData = ItineraryDayData(id: 1, dayNumber: 1, date: testDate, games: [], items: [], travelBefore: nil)

        let controller = ItineraryTableViewController(style: .plain)
        controller.reloadData(days: [dayData], travelValidRanges: [:])

        let rowCount = controller.tableView(controller.tableView, numberOfRowsInSection: 0)
        XCTAssertEqual(rowCount, 1, "Empty day should only have header row")
    }

    func test_restDay_withTravelBefore_onlyShowsHeader() {
        // Given: A rest day with travelBefore set (legacy field)
        // Semantic model: travelBefore is IGNORED - travel must be in items to appear
        let travel = H.makeTravelSegment(from: "Chicago", to: "Detroit")
        let dayData = ItineraryDayData(id: 1, dayNumber: 1, date: testDate, games: [], items: [], travelBefore: travel)

        let controller = ItineraryTableViewController(style: .plain)
        controller.reloadData(days: [dayData], travelValidRanges: [:])

        let rowCount = controller.tableView(controller.tableView, numberOfRowsInSection: 0)
        XCTAssertEqual(rowCount, 1, "travelBefore is ignored - only header should appear")
    }

    func test_singleGameDay_showsHeaderAndGame() {
        // Given: A day with one game
        let games = [H.makeRichGame(city: "Detroit", hour: 19)]
        let dayData = ItineraryDayData(id: 1, dayNumber: 1, date: testDate, games: games, items: [], travelBefore: nil)

        let controller = ItineraryTableViewController(style: .plain)
        controller.reloadData(days: [dayData], travelValidRanges: [:])

        let rowCount = controller.tableView(controller.tableView, numberOfRowsInSection: 0)
        XCTAssertEqual(rowCount, 2, "Day with one game should have 2 rows: header + games")
    }

    // MARK: - Multi-Day Trip Tests

    func test_multiDayTrip_allDaysRepresented() {
        // Given: A 5-day trip
        let days = H.makeDays(count: 5)

        let controller = ItineraryTableViewController(style: .plain)
        controller.reloadData(days: days, travelValidRanges: [:])

        let rowCount = controller.tableView(controller.tableView, numberOfRowsInSection: 0)
        XCTAssertEqual(rowCount, 5, "5-day trip with empty days should have 5 header rows")
    }
}