Initial commit

mlbTVOS/ViewModels/LeagueCenterViewModel.swift

@@ -0,0 +1,132 @@
+import Foundation
+import Observation
+
+@Observable
+@MainActor
+final class LeagueCenterViewModel {
+    var scheduleGames: [StatsGame] = []
+    var standings: [StandingsDivisionRecord] = []
+    var teams: [LeagueTeamSummary] = []
+
+    var selectedTeam: TeamProfile?
+    var roster: [RosterPlayerSummary] = []
+    var selectedPlayer: PlayerProfile?
+
+    var isLoadingOverview = false
+    var isLoadingTeam = false
+    var isLoadingPlayer = false
+
+    var overviewErrorMessage: String?
+    var teamErrorMessage: String?
+    var playerErrorMessage: String?
+
+    private let statsAPI = MLBStatsAPI()
+    private(set) var scheduleDate = Date()
+
+    private var seasonString: String {
+        String(Calendar.current.component(.year, from: scheduleDate))
+    }
+
+    private var scheduleDateString: String {
+        Self.scheduleFormatter.string(from: scheduleDate)
+    }
+
+    var displayDateString: String {
+        Self.displayFormatter.string(from: scheduleDate)
+    }
+
+    func loadInitial() async {
+        isLoadingOverview = true
+        overviewErrorMessage = nil
+
+        async let scheduleTask = statsAPI.fetchSchedule(date: scheduleDateString)
+        async let standingsTask = statsAPI.fetchStandingsRecords(season: seasonString)
+        async let teamsTask = statsAPI.fetchLeagueTeams(season: seasonString)
+
+        do {
+            scheduleGames = try await scheduleTask
+            standings = try await standingsTask
+            teams = try await teamsTask
+
+            if selectedTeam == nil, let firstTeam = teams.first {
+                await selectTeam(firstTeam.id)
+            }
+        } catch {
+            overviewErrorMessage = "Failed to load league information."
+        }
+
+        isLoadingOverview = false
+    }
+
+    func goToPreviousDay() async {
+        scheduleDate = Calendar.current.date(byAdding: .day, value: -1, to: scheduleDate) ?? scheduleDate
+        await loadSchedule()
+    }
+
+    func goToNextDay() async {
+        scheduleDate = Calendar.current.date(byAdding: .day, value: 1, to: scheduleDate) ?? scheduleDate
+        await loadSchedule()
+    }
+
+    func goToToday() async {
+        scheduleDate = Date()
+        await loadSchedule()
+    }
+
+    func loadSchedule() async {
+        do {
+            scheduleGames = try await statsAPI.fetchSchedule(date: scheduleDateString)
+        } catch {
+            overviewErrorMessage = "Failed to load schedule."
+        }
+    }
+
+    func selectTeam(_ teamID: Int) async {
+        isLoadingTeam = true
+        teamErrorMessage = nil
+        selectedPlayer = nil
+        playerErrorMessage = nil
+
+        do {
+            async let profileTask = statsAPI.fetchTeamProfile(teamID: teamID, season: seasonString)
+            async let rosterTask = statsAPI.fetchTeamRoster(teamID: teamID, season: seasonString)
+
+            selectedTeam = try await profileTask
+            roster = try await rosterTask
+
+            if let firstPlayer = roster.first {
+                await selectPlayer(firstPlayer.id)
+            }
+        } catch {
+            teamErrorMessage = "Failed to load team details."
+            roster = []
+        }
+
+        isLoadingTeam = false
+    }
+
+    func selectPlayer(_ playerID: Int) async {
+        isLoadingPlayer = true
+        playerErrorMessage = nil
+
+        do {
+            selectedPlayer = try await statsAPI.fetchPlayerProfile(personID: playerID, season: seasonString)
+        } catch {
+            playerErrorMessage = "Failed to load player details."
+        }
+
+        isLoadingPlayer = false
+    }
+
+    private static let scheduleFormatter: DateFormatter = {
+        let formatter = DateFormatter()
+        formatter.dateFormat = "yyyy-MM-dd"
+        return formatter
+    }()
+
+    private static let displayFormatter: DateFormatter = {
+        let formatter = DateFormatter()
+        formatter.dateFormat = "EEEE, MMM d"
+        return formatter
+    }()
+}