brackt/app/routes/leagues/$leagueId.draft.$seasonId.tsx

import { useLoaderData, Link, useRevalidator } from "react-router";
import { eq, and, asc, desc, inArray } from "drizzle-orm";
import { database } from "~/database/context";
import * as schema from "~/database/schema";
import { useDraftSocket } from "~/hooks/useDraftSocket";
import { useEffect, useState, useMemo, useRef } from "react";
import { Card } from "~/components/ui/card";
import { Badge } from "~/components/ui/badge";
import { Button } from "~/components/ui/button";
import { Tabs, TabsContent, TabsList, TabsTrigger } from "~/components/ui/tabs";
import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle } from "~/components/ui/dialog";
import { getAuth } from "@clerk/react-router/server";
import { getTeamQueue } from "~/models/draft-queue";
import { DraftSidebar } from "~/components/DraftSidebar";
import { TeamsDraftedGrid } from "~/components/draft/TeamsDraftedGrid";
import { QueueSection } from "~/components/draft/QueueSection";
import { AvailableParticipantsSection } from "~/components/draft/AvailableParticipantsSection";
import { SidebarRecentPicks } from "~/components/draft/SidebarRecentPicks";
import { DraftGridSection } from "~/components/draft/DraftGridSection";
import { ConnectionOverlay } from "~/components/draft/ConnectionOverlay";
import { calculateDraftEligibility } from "~/lib/draft-eligibility";
import { getTeamForPick } from "~/lib/draft-order";
import { useDraftNotifications } from "~/hooks/useDraftNotifications";
import { NotificationSettings } from "~/components/NotificationSettings";
import { toast } from "sonner";

export async function loader(args: any) {
  const { params } = args;
  const { seasonId, leagueId } = params;
  const auth = await getAuth(args);
  const userId = (auth as any).userId as string | null;

  if (!seasonId) {
    throw new Response("Season ID is required", { status: 400 });
  }

  if (!userId) {
    throw new Response("You must be logged in to view the draft room", {
      status: 401,
    });
  }

  const db = database();

  // Get season details
  const season = await db.query.seasons.findFirst({
    where: eq(schema.seasons.id, seasonId),
    with: {
      league: true,
      teams: true,
    },
  });

  if (!season) {
    throw new Response("Season not found", { status: 404 });
  }

  // Verify user access: must be team owner or commissioner
  const userTeam = season.teams.find((team: any) => team.ownerId === userId);
  const isCommissioner = await db.query.commissioners.findFirst({
    where: and(
      eq(schema.commissioners.leagueId, leagueId),
      eq(schema.commissioners.userId, userId)
    ),
  });

  if (!userTeam && !isCommissioner) {
    throw new Response("You do not have access to this draft room", {
      status: 403,
    });
  }

  // Get draft slots (draft order) - using select instead of query builder
  const draftSlots = await db
    .select({
      id: schema.draftSlots.id,
      draftOrder: schema.draftSlots.draftOrder,
      team: schema.teams,
    })
    .from(schema.draftSlots)
    .innerJoin(schema.teams, eq(schema.draftSlots.teamId, schema.teams.id))
    .where(eq(schema.draftSlots.seasonId, seasonId))
    .orderBy(asc(schema.draftSlots.draftOrder));

  // Get all draft picks - using select instead of query builder
  const draftPicks = await db
    .select({
      id: schema.draftPicks.id,
      pickNumber: schema.draftPicks.pickNumber,
      round: schema.draftPicks.round,
      pickInRound: schema.draftPicks.pickInRound,
      timeUsed: schema.draftPicks.timeUsed,
      team: schema.teams,
      participant: schema.participants,
      sport: schema.sports,
    })
    .from(schema.draftPicks)
    .innerJoin(schema.teams, eq(schema.draftPicks.teamId, schema.teams.id))
    .innerJoin(
      schema.participants,
      eq(schema.draftPicks.participantId, schema.participants.id)
    )
    .innerJoin(
      schema.sportsSeasons,
      eq(schema.participants.sportsSeasonId, schema.sportsSeasons.id)
    )
    .innerJoin(
      schema.sports,
      eq(schema.sportsSeasons.sportId, schema.sports.id)
    )
    .where(eq(schema.draftPicks.seasonId, seasonId))
    .orderBy(asc(schema.draftPicks.pickNumber));

  // Get sports seasons for this season
  const seasonSports = await db.query.seasonSports.findMany({
    where: eq(schema.seasonSports.seasonId, seasonId),
  });

  const sportsSeasonIds = seasonSports.map((ss) => ss.sportsSeasonId);

  // Get ALL participants (both drafted and undrafted) - sorted by EV desc, then name
  // Filtering will be done on the client side based on the "Show Drafted" toggle
  const availableParticipants = sportsSeasonIds.length > 0
    ? await db
        .select({
          id: schema.participants.id,
          name: schema.participants.name,
          sport: schema.sports,
        })
        .from(schema.participants)
        .innerJoin(
          schema.sportsSeasons,
          eq(schema.participants.sportsSeasonId, schema.sportsSeasons.id)
        )
        .innerJoin(
          schema.sports,
          eq(schema.sportsSeasons.sportId, schema.sports.id)
        )
        .where(
          sportsSeasonIds.length === 1
            ? eq(schema.participants.sportsSeasonId, sportsSeasonIds[0])
            : inArray(schema.participants.sportsSeasonId, sportsSeasonIds)
        )
        .orderBy(
          desc(schema.participants.expectedValue),
          asc(schema.participants.name)
        )
    : [];

  // Load user's team queue if they have a team
  const userQueue = userTeam ? await getTeamQueue(userTeam.id) : [];

  // Load draft timers for all teams
  const timers = await db.query.draftTimers.findMany({
    where: eq(schema.draftTimers.seasonId, seasonId),
  });

  // Load autodraft settings for all teams
  const autodraftSettings = await db.query.autodraftSettings.findMany({
    where: eq(schema.autodraftSettings.seasonId, seasonId),
  });

  // Derive user's autodraft settings from the already-loaded list
  const userAutodraftSettings = userTeam
    ? (autodraftSettings.find((s) => s.teamId === userTeam.id) ?? null)
    : null;

  return {
    season,
    draftSlots,
    draftPicks,
    availableParticipants,
    userTeam,
    userQueue,
    timers,
    autodraftSettings,
    userAutodraftSettings,
    isCommissioner: !!isCommissioner,
    currentUserId: userId,
    numFlexPicks: Math.max(0, season.draftRounds - seasonSports.length),
  };
}

export default function DraftRoom() {
  const {
    season,
    draftSlots,
    draftPicks,
    availableParticipants,
    userTeam,
    userQueue,
    timers,
    autodraftSettings,
    userAutodraftSettings,
    isCommissioner,
    currentUserId,
    numFlexPicks,
  } = useLoaderData<typeof loader>();
  const { revalidate } = useRevalidator();
  const { isConnected, connectionError, isReconnecting, on, off } = useDraftSocket(season.id, userTeam?.id);
  const {
    permissionState: notificationsPermission,
    enabled: notificationsEnabled,
    setEnabled: setNotificationsEnabled,
    mode: notificationsMode,
    setMode: setNotificationsMode,
    sendNotification,
  } = useDraftNotifications(season.id, currentUserId);

  // Use refs so the socket effect doesn't re-register all handlers when the user
  // changes notification settings (which would change the sendNotification reference).
  const sendNotificationRef = useRef(sendNotification);
  useEffect(() => {
    sendNotificationRef.current = sendNotification;
  }, [sendNotification]);
  const notificationsModeRef = useRef(notificationsMode);
  useEffect(() => {
    notificationsModeRef.current = notificationsMode;
  }, [notificationsMode]);
  const [picks, setPicks] = useState(draftPicks);
  const [currentPick, setCurrentPick] = useState(season.currentPickNumber || 1);
  const [searchQuery, setSearchQuery] = useState("");
  const [hideDrafted, setHideDrafted] = useState(true);
  const [hideIneligible, setHideIneligible] = useState(true);
  const [sportFilter, setSportFilter] = useState<string>("all");
  const [queue, setQueue] = useState(userQueue);
  const [isPaused, setIsPaused] = useState(season.draftPaused || false);
  const [isDraftComplete, setIsDraftComplete] = useState(
    season.status === "active" || season.status === "completed"
  );

  // Sidebar and tabs state
  const [sidebarCollapsed, setSidebarCollapsed] = useState(() => {
    if (typeof window === "undefined") return false;
    const stored = localStorage.getItem("draftSidebarCollapsed");
    return stored ? JSON.parse(stored) : false;
  });
  const [activeTab, setActiveTab] = useState<"participants" | "board" | "teams">("participants");

  // Track autodraft status for all teams
  const [autodraftStatus, setAutodraftStatus] = useState<Record<string, boolean>>(() => {
    const status: Record<string, boolean> = {};
    autodraftSettings.forEach((setting: any) => {
      status[setting.teamId] = setting.isEnabled;
    });
    return status;
  });

  // Track connected teams
  const [connectedTeams, setConnectedTeams] = useState<Set<string>>(new Set());

  // Track user's autodraft settings
  const [userAutodraft, setUserAutodraft] = useState({
    isEnabled: userAutodraftSettings?.isEnabled || false,
    mode: (userAutodraftSettings?.mode || "next_pick") as "next_pick" | "while_on",
  });

  const [teamTimers, setTeamTimers] = useState<Record<string, number>>(() => {
    // Initialize with timers from loader data, or use initial time if draft hasn't started
    const timersMap: Record<string, number> = {};
    const initialTime = season.draftInitialTime || 120;
    
    if (timers.length > 0) {
      // Draft has started, use actual timers
      timers.forEach((timer: any) => {
        timersMap[timer.teamId] = timer.timeRemaining;
      });
    } else {
      // Draft hasn't started, show initial time for all teams
      draftSlots.forEach((slot) => {
        timersMap[slot.team.id] = initialTime;
      });
    }
    
    return timersMap;
  });
  const [forcePickDialogOpen, setForcePickDialogOpen] = useState(false);
  const [selectedPickSlot, setSelectedPickSlot] = useState<{
    pickNumber: number;
    teamId: string;
  } | null>(null);
  const [dialogSearchQuery, setDialogSearchQuery] = useState("");
  const [dialogSportFilter, setDialogSportFilter] = useState<string>("all");

  // Replace pick dialog state
  const [replacePickDialogOpen, setReplacePickDialogOpen] = useState(false);
  const [replacePickSlot, setReplacePickSlot] = useState<{
    pickNumber: number;
    teamId: string;
    oldParticipantId: string;
  } | null>(null);

  // Rollback confirm dialog state
  const [rollbackConfirmOpen, setRollbackConfirmOpen] = useState(false);
  const [rollbackPickNumber, setRollbackPickNumber] = useState<number | null>(null);
  const [isRollingBack, setIsRollingBack] = useState(false);

  // Shared transforms for eligibility calculations
  const transformedPicks = useMemo(
    () =>
      picks.map((p: any) => ({
        teamId: p.team.id,
        participant: {
          id: p.participant.id,
          sport: { id: p.sport.id, name: p.sport.name },
        },
      })),
    [picks]
  );

  const transformedParticipants = useMemo(
    () =>
      availableParticipants.map((p: any) => ({
        id: p.id,
        sport: { id: p.sport.id, name: p.sport.name },
      })),
    [availableParticipants]
  );

  const seasonSportsData = useMemo(() => {
    const sportsMap = new Map<string, { id: string; name: string }>();
    availableParticipants.forEach((p) => {
      if (!sportsMap.has(p.sport.id)) {
        sportsMap.set(p.sport.id, { id: p.sport.id, name: p.sport.name });
      }
    });
    return Array.from(sportsMap.values()).sort((a, b) =>
      a.name.localeCompare(b.name)
    );
  }, [availableParticipants]);

  // Calculate draft eligibility for current user's team
  const eligibility = useMemo(() => {
    if (!userTeam) return null;
    const userTeamPicks = transformedPicks.filter(
      (p: any) => p.teamId === userTeam.id
    );
    return calculateDraftEligibility(
      userTeam.id,
      userTeamPicks,
      transformedPicks,
      transformedParticipants,
      seasonSportsData,
      season.draftRounds,
      season.teams
    );
  }, [userTeam, transformedPicks, transformedParticipants, seasonSportsData, season]);

  // Calculate eligibility for force manual pick dialog (selected team)
  const forcePickEligibility = useMemo(() => {
    if (!selectedPickSlot) return null;
    const selectedTeamPicks = transformedPicks.filter(
      (p: any) => p.teamId === selectedPickSlot.teamId
    );
    return calculateDraftEligibility(
      selectedPickSlot.teamId,
      selectedTeamPicks,
      transformedPicks,
      transformedParticipants,
      seasonSportsData,
      season.draftRounds,
      season.teams
    );
  }, [selectedPickSlot, transformedPicks, transformedParticipants, seasonSportsData, season]);

  // Calculate eligibility for replace pick dialog — exclude the old pick so its slot is free
  const replacePickEligibility = useMemo(() => {
    if (!replacePickSlot) return null;
    const allPicksExcluding = transformedPicks.filter(
      (p: any) => p.participant.id !== replacePickSlot.oldParticipantId
    );
    const selectedTeamPicks = allPicksExcluding.filter(
      (p: any) => p.teamId === replacePickSlot.teamId
    );
    return calculateDraftEligibility(
      replacePickSlot.teamId,
      selectedTeamPicks,
      allPicksExcluding,
      transformedParticipants,
      seasonSportsData,
      season.draftRounds,
      season.teams
    );
  }, [replacePickSlot, transformedPicks, transformedParticipants, seasonSportsData, season]);

  // Listen for new picks from other users
  useEffect(() => {
    const handlePickMade = (data: any) => {
      setPicks((prev: any) => [...prev, data.pick]);
      setCurrentPick(data.nextPickNumber);

      // No meaningful "next turn" notification once the draft is over
      if (data.isDraftComplete) return;

      const notifTitle = `${season.league.name} Draft`;
      const nextSlot = getTeamForPick(data.nextPickNumber, draftSlots);
      const isNowMyTurn = !!(
        userTeam && nextSlot && nextSlot.team.id === userTeam.id
      );

      if (isNowMyTurn) {
        sendNotificationRef.current(notifTitle, `It's your turn to pick!`);
      } else if (
        notificationsModeRef.current === "all_picks" &&
        data.pick?.team?.id !== userTeam?.id
      ) {
        // Only notify about other teams' picks, not the user's own
        const pickerName = data.pick?.team?.name || "A team";
        const participantName = data.pick?.participant?.name || "a participant";
        sendNotificationRef.current(
          notifTitle,
          `${pickerName} picked ${participantName}`
        );
      }
    };

    const handleTimerUpdate = (data: any) => {
      // Update the specific team's timer
      setTeamTimers((prev) => ({
        ...prev,
        [data.teamId]: data.timeRemaining,
      }));
    };

    const handleDraftPaused = () => {
      setIsPaused(true);
    };

    const handleDraftResumed = () => {
      setIsPaused(false);
    };

    const handleDraftCompleted = () => {
      setIsDraftComplete(true);
    };

    const handleAutodraftUpdated = (data: { teamId: string; isEnabled: boolean; mode: "next_pick" | "while_on" }) => {
      setAutodraftStatus((prev) => ({
        ...prev,
        [data.teamId]: data.isEnabled,
      }));

      // Update user's local state if it's their team
      if (userTeam && data.teamId === userTeam.id) {
        setUserAutodraft({
          isEnabled: data.isEnabled,
          mode: data.mode,
        });
      }
    };

    const handleTeamConnected = (data: { teamId: string }) => {
      setConnectedTeams((prev) => new Set(prev).add(data.teamId));
    };

    const handleTeamDisconnected = (data: { teamId: string }) => {
      setConnectedTeams((prev) => {
        const newSet = new Set(prev);
        newSet.delete(data.teamId);
        return newSet;
      });
    };

    const handleConnectedTeamsList = (data: { teamIds: string[] }) => {
      setConnectedTeams(new Set(data.teamIds));
    };

    const handleParticipantRemovedFromQueues = (data: { participantId: string }) => {
      setQueue((prev: any) =>
        prev.filter((item: any) => item.participantId !== data.participantId)
      );
    };

    const handlePickReplaced = (data: any) => {
      setPicks((prev: any) =>
        prev.map((p: any) => (p.pickNumber === data.pickNumber ? data.pick : p))
      );
    };

    const handleDraftRolledBack = (data: any) => {
      setPicks((prev: any) =>
        prev.filter((p: any) => p.pickNumber < data.pickNumber)
      );
      setCurrentPick(data.pickNumber);
      setIsDraftComplete(false);
      setIsPaused(false);
    };

    on("pick-made", handlePickMade);
    on("timer-update", handleTimerUpdate);
    on("draft-paused", handleDraftPaused);
    on("draft-resumed", handleDraftResumed);
    on("draft-completed", handleDraftCompleted);
    on("autodraft-updated", handleAutodraftUpdated);
    on("team-connected", handleTeamConnected);
    on("team-disconnected", handleTeamDisconnected);
    on("connected-teams-list", handleConnectedTeamsList);
    on("participant-removed-from-queues", handleParticipantRemovedFromQueues);
    on("pick-replaced", handlePickReplaced);
    on("draft-rolled-back", handleDraftRolledBack);

    return () => {
      off("pick-made", handlePickMade);
      off("timer-update", handleTimerUpdate);
      off("draft-paused", handleDraftPaused);
      off("draft-resumed", handleDraftResumed);
      off("draft-completed", handleDraftCompleted);
      off("autodraft-updated", handleAutodraftUpdated);
      off("team-connected", handleTeamConnected);
      off("team-disconnected", handleTeamDisconnected);
      off("connected-teams-list", handleConnectedTeamsList);
      off("participant-removed-from-queues", handleParticipantRemovedFromQueues);
      off("pick-replaced", handlePickReplaced);
      off("draft-rolled-back", handleDraftRolledBack);
    };
  }, [on, off, currentPick, userTeam, draftSlots, season.league.name]);

  // Persist sidebar collapsed state
  useEffect(() => {
    if (typeof window !== "undefined") {
      localStorage.setItem("draftSidebarCollapsed", JSON.stringify(sidebarCollapsed));
    }
  }, [sidebarCollapsed]);

  // Queue handlers
  const handleAddToQueue = async (participantId: string) => {
    if (!userTeam) return;

    // Check if participant is already in queue (client-side)
    const alreadyInQueue = queue.some((item: any) => item.participantId === participantId);
    if (alreadyInQueue) {
      toast.error("This participant is already in your queue");
      return;
    }

    // Optimistic update - create a temporary queue item
    const tempQueueItem = {
      id: `temp-${Date.now()}`, // Temporary ID
      participantId,
      queuePosition: queue.length + 1,
    };

    // Immediately update the UI
    setQueue((prev: any) => [...prev, tempQueueItem]);

    const formData = new FormData();
    formData.append("seasonId", season.id);
    formData.append("teamId", userTeam.id);
    formData.append("participantId", participantId);

    try {
      const response = await fetch("/api/queue/add", {
        method: "POST",
        body: formData,
      });

      if (response.ok) {
        const data = await response.json();
        // Replace temp item with real item from server
        setQueue((prev: any) =>
          prev.map((item: any) =>
            item.id === tempQueueItem.id ? data.queueItem : item
          )
        );
      } else {
        // Revert the optimistic update on error
        setQueue((prev: any) =>
          prev.filter((item: any) => item.id !== tempQueueItem.id)
        );

        const error = await response.json();
        toast.error(error.error || "Failed to add to queue");
      }
    } catch (error) {
      // Revert the optimistic update on network error
      setQueue((prev: any) =>
        prev.filter((item: any) => item.id !== tempQueueItem.id)
      );
      toast.error("Network error - failed to add to queue");
    }
  };

  const handleRemoveFromQueue = async (queueId: string) => {
    if (!userTeam) return;

    const formData = new FormData();
    formData.append("queueId", queueId);
    formData.append("teamId", userTeam.id);

    try {
      const response = await fetch("/api/queue/remove", {
        method: "POST",
        body: formData,
      });

      if (response.ok) {
        const data = await response.json();
        setQueue(data.queue);
      } else {
        const error = await response.json();
        toast.error(error.error || "Failed to remove from queue");
      }
    } catch {
      toast.error("Network error - failed to remove from queue");
    }
  };

  const handleReorderQueue = async (participantIds: string[]) => {
    if (!userTeam) return;

    const formData = new FormData();
    formData.append("teamId", userTeam.id);
    formData.append("seasonId", season.id);
    formData.append("participantIds", JSON.stringify(participantIds));

    try {
      const response = await fetch("/api/queue/reorder", {
        method: "POST",
        body: formData,
      });

      if (response.ok) {
        const data = await response.json();
        setQueue(data.queue);
      } else {
        const error = await response.json();
        toast.error(error.error || "Failed to reorder queue");
      }
    } catch {
      toast.error("Network error - failed to reorder queue");
    }
  };

  const handleStartDraft = async () => {
    const formData = new FormData();
    formData.append("seasonId", season.id);

    const response = await fetch("/api/draft/start", {
      method: "POST",
      body: formData,
    });

    if (response.ok) {
      revalidate();
    } else {
      const error = await response.json();
      toast.error(error.error || "Failed to start draft");
    }
  };

  const handlePauseDraft = async () => {
    const formData = new FormData();
    formData.append("seasonId", season.id);

    try {
      const response = await fetch("/api/draft/pause", {
        method: "POST",
        body: formData,
      });

      if (response.ok) {
        setIsPaused(true);
      } else {
        const error = await response.json();
        toast.error(error.error || "Failed to pause draft");
      }
    } catch {
      toast.error("Network error - failed to pause draft");
    }
  };

  const handleResumeDraft = async () => {
    const formData = new FormData();
    formData.append("seasonId", season.id);

    try {
      const response = await fetch("/api/draft/resume", {
        method: "POST",
        body: formData,
      });

      if (response.ok) {
        setIsPaused(false);
      } else {
        const error = await response.json();
        toast.error(error.error || "Failed to resume draft");
      }
    } catch {
      toast.error("Network error - failed to resume draft");
    }
  };

  const handleMakePick = async (participantId: string) => {
    const formData = new FormData();
    formData.append("seasonId", season.id);
    formData.append("participantId", participantId);

    const response = await fetch("/api/draft/make-pick", {
      method: "POST",
      body: formData,
    });

    if (!response.ok) {
      const error = await response.json();
      toast.error(error.error || "Failed to make pick");
    }
  };

  const handleForceAutopick = async (pickNumber: number, teamId: string) => {
    const formData = new FormData();
    formData.append("seasonId", season.id);
    formData.append("teamId", teamId);
    formData.append("pickNumber", pickNumber.toString());

    const response = await fetch("/api/draft/force-autopick", {
      method: "POST",
      body: formData,
    });

    if (!response.ok) {
      const error = await response.json();
      toast.error(error.error || "Failed to force autopick");
    }
  };

  const handleForceManualPick = async (participantId: string) => {
    if (!selectedPickSlot) return;

    const formData = new FormData();
    formData.append("seasonId", season.id);
    formData.append("teamId", selectedPickSlot.teamId);
    formData.append("participantId", participantId);
    formData.append("pickNumber", selectedPickSlot.pickNumber.toString());

    const response = await fetch("/api/draft/force-manual-pick", {
      method: "POST",
      body: formData,
    });

    if (response.ok) {
      setForcePickDialogOpen(false);
      setSelectedPickSlot(null);
    } else {
      const error = await response.json();
      toast.error(error.error || "Failed to force manual pick");
    }
  };

  const handleReplacePickOpen = (pickNumber: number, teamId: string) => {
    const pick = picks.find((p: any) => p.pickNumber === pickNumber);
    if (!pick) {
      toast.error("Pick not found — try refreshing the page");
      return;
    }
    setReplacePickSlot({ pickNumber, teamId, oldParticipantId: pick.participant.id });
    setDialogSearchQuery("");
    setDialogSportFilter("all");
    setReplacePickDialogOpen(true);
  };

  const handleReplacePick = async (participantId: string) => {
    if (!replacePickSlot) return;

    const formData = new FormData();
    formData.append("seasonId", season.id);
    formData.append("teamId", replacePickSlot.teamId);
    formData.append("participantId", participantId);
    formData.append("pickNumber", replacePickSlot.pickNumber.toString());

    const response = await fetch("/api/draft/replace-pick", {
      method: "POST",
      body: formData,
    });

    if (response.ok) {
      setReplacePickDialogOpen(false);
      setReplacePickSlot(null);
    } else {
      const error = await response.json();
      toast.error(error.error || "Failed to replace pick");
    }
  };

  const handleRollbackToPick = (pickNumber: number) => {
    setRollbackPickNumber(pickNumber);
    setRollbackConfirmOpen(true);
  };

  const handleConfirmRollback = async () => {
    if (!rollbackPickNumber || isRollingBack) return;

    setIsRollingBack(true);
    const formData = new FormData();
    formData.append("seasonId", season.id);
    formData.append("pickNumber", rollbackPickNumber.toString());

    const response = await fetch("/api/draft/rollback", {
      method: "POST",
      body: formData,
    });

    setIsRollingBack(false);
    if (response.ok) {
      setRollbackConfirmOpen(false);
      setRollbackPickNumber(null);
    } else {
      const error = await response.json();
      toast.error(error.error || "Failed to roll back draft");
    }
  };

  // Calculate current round
  const currentRound = draftSlots.length > 0 ? Math.ceil(currentPick / draftSlots.length) : 1;

  // Determine whose turn it is
  const currentDraftSlot = getTeamForPick(currentPick, draftSlots);
  const isMyTurn = !!(
    userTeam && currentDraftSlot && currentDraftSlot.team.id === userTeam.id
  );
  const canPick = isMyTurn && season.status === "draft" && !isPaused; // Only team owner on their turn when draft is active

  // Generate snake draft grid structure
  const draftGrid = useMemo(() => {
    const teamCount = draftSlots.length;
    const rounds = season.draftRounds;
    const grid: Array<
      Array<{
        pickNumber: number;
        round: number;
        pickInRound: number;
        teamId: string;
        pick?: any;
      }>
    > = [];

    for (let round = 1; round <= rounds; round++) {
      const roundPicks = [];
      const isOddRound = round % 2 === 1;

      for (let i = 0; i < teamCount; i++) {
        const pickInRound = i + 1;
        const teamIndex = isOddRound ? i : teamCount - 1 - i;
        const pickNumber = (round - 1) * teamCount + pickInRound;
        const teamId = draftSlots[teamIndex]?.team.id;

        const pick = picks.find((p: any) => p.pickNumber === pickNumber);

        roundPicks.push({ pickNumber, round, pickInRound, teamId, pick });
      }
      grid.push(roundPicks);
    }

    return grid;
  }, [picks, draftSlots, season.draftRounds]);

  // Get drafted participant IDs for filtering
  const draftedParticipantIds = useMemo(
    () => new Set(picks.map((p: any) => p.participant.id)),
    [picks]
  );

  // Get unique sports for filter dropdown
  const uniqueSports = useMemo(
    () =>
      Array.from(
        new Set(availableParticipants.map((p: any) => p.sport.name))
      ).sort(),
    [availableParticipants]
  );

  // Participants filtered for the force pick dialog (always excludes drafted, uses dialog-local filters)
  const dialogFilteredParticipants = useMemo(
    () =>
      availableParticipants.filter((p: any) => {
        if (draftedParticipantIds.has(p.id)) return false;
        if (
          dialogSearchQuery &&
          !p.name.toLowerCase().includes(dialogSearchQuery.toLowerCase())
        )
          return false;
        if (dialogSportFilter !== "all" && p.sport.name !== dialogSportFilter)
          return false;
        return true;
      }),
    [availableParticipants, draftedParticipantIds, dialogSearchQuery, dialogSportFilter]
  );

  // Participants for the replace pick dialog — excludes drafted except the old pick (which is freed)
  const replaceDialogFilteredParticipants = useMemo(() => {
    if (!replacePickSlot) return [];
    return availableParticipants.filter((p: any) => {
      // Exclude drafted players, but allow the old participant through since they'll be freed
      if (p.id !== replacePickSlot.oldParticipantId && draftedParticipantIds.has(p.id))
        return false;
      if (
        dialogSearchQuery &&
        !p.name.toLowerCase().includes(dialogSearchQuery.toLowerCase())
      )
        return false;
      if (dialogSportFilter !== "all" && p.sport.name !== dialogSportFilter)
        return false;
      return true;
    });
  }, [availableParticipants, replacePickSlot, draftedParticipantIds, dialogSearchQuery, dialogSportFilter]);

  // Filter participants based on search, sport, drafted status, and eligibility
  const filteredParticipants = useMemo(
    () =>
      availableParticipants.filter((participant: any) => {
        // Drafted filter - hide drafted participants by default
        if (hideDrafted && draftedParticipantIds.has(participant.id)) {
          return false;
        }
        // Eligibility filter - hide ineligible participants by default (if user has a team)
        if (hideIneligible && eligibility) {
          const isEligible = eligibility.eligibleSportIds.has(participant.sport.id);
          if (!isEligible) {
            return false;
          }
        }
        // Search filter
        if (
          searchQuery &&
          !participant.name.toLowerCase().includes(searchQuery.toLowerCase())
        ) {
          return false;
        }
        // Sport filter
        if (sportFilter !== "all" && participant.sport.name !== sportFilter) {
          return false;
        }
        return true;
      }),
    [availableParticipants, hideDrafted, hideIneligible, eligibility, draftedParticipantIds, searchQuery, sportFilter]
  );

  return (
    <div className="h-screen bg-background flex flex-col overflow-hidden">
      {/* Draft Completion Banner */}
      {isDraftComplete && (
        <div className="bg-emerald-500/20 border-b border-emerald-500/30 text-emerald-400 px-4 py-3 text-center font-semibold flex-shrink-0">
          🎉 Draft Complete! The season is now active.
          {season.league.isPublicDraftBoard && (
            <>
              {" "}
              <a
                href={`/leagues/${season.leagueId}/draft-board/${season.id}`}
                className="underline hover:text-emerald-300"
              >
                View Draft Board
              </a>
            </>
          )}
        </div>
      )}

      {/* Standalone Header - No Main Nav */}
      <div className="border-b bg-card flex-shrink-0">
        <div className="w-full px-4 py-4">
          <div className="flex items-center justify-between">
            <div className="flex items-center gap-3">
              {/* Mobile menu button - only show if user has team and sidebar is collapsed */}
              {userTeam && sidebarCollapsed && (
                <Button
                  variant="ghost"
                  size="icon"
                  onClick={() => setSidebarCollapsed(false)}
                  className="lg:hidden"
                  aria-label="Open sidebar"
                >
                  <svg
                    xmlns="http://www.w3.org/2000/svg"
                    width="24"
                    height="24"
                    viewBox="0 0 24 24"
                    fill="none"
                    stroke="currentColor"
                    strokeWidth="2"
                    strokeLinecap="round"
                    strokeLinejoin="round"
                  >
                    <line x1="3" y1="12" x2="21" y2="12"></line>
                    <line x1="3" y1="6" x2="21" y2="6"></line>
                    <line x1="3" y1="18" x2="21" y2="18"></line>
                  </svg>
                </Button>
              )}
              <div>
                <h1 className="text-3xl font-bold">
                  {season.league.name} - {season.year} Draft
                </h1>
                <div className="flex gap-4 text-sm text-muted-foreground mt-1">
                  <span>Round: {currentRound}</span>
                  <span>Pick: {currentPick}</span>
                  <span className="capitalize">
                    {season.status.replace("_", " ")}
                  </span>
                </div>
              </div>
            </div>
            <div className="flex items-center gap-3">
              {/* Commissioner Controls */}
              {isCommissioner && season.status === "pre_draft" && (
                <Button onClick={handleStartDraft}>Start Draft</Button>
              )}
              
              {isCommissioner && season.status === "draft" && !isDraftComplete && (
                <>
                  {isPaused ? (
                    <Button onClick={handleResumeDraft} variant="default">
                      Resume Draft
                    </Button>
                  ) : (
                    <Button onClick={handlePauseDraft} variant="outline">
                      Pause Draft
                    </Button>
                  )}
                </>
              )}

              <div className="flex items-center gap-2">
                <div
                  className={`w-3 h-3 rounded-full ${
                    isConnected ? "bg-emerald-500" : "bg-coral-accent"
                  }`}
                />
                <span className="text-sm font-medium">
                  {isConnected ? "Connected" : "Disconnected"}
                </span>
              </div>
              <Button variant="outline" asChild>
                <Link to={`/leagues/${season.leagueId}`}>Exit Draft Room</Link>
              </Button>
            </div>
          </div>
        </div>
      </div>

      {/* Main Content - Flex Row: Sidebar + Tabs */}
      <div className="flex-1 flex overflow-hidden">
        {/* Sidebar */}
        {userTeam && (
          <DraftSidebar
            collapsed={sidebarCollapsed}
            onCollapsedChange={setSidebarCollapsed}
            queueSection={
              <QueueSection
                queue={queue}
                availableParticipants={availableParticipants}
                eligibility={eligibility}
                seasonId={season.id}
                teamId={userTeam.id}
                isMyTurn={isMyTurn}
                userAutodraft={userAutodraft}
                onRemoveFromQueue={handleRemoveFromQueue}
                onAutodraftUpdate={(isEnabled, mode) => {
                  setUserAutodraft({ isEnabled, mode });
                }}
                onReorder={handleReorderQueue}
              />
            }
            recentPicksSection={
              <SidebarRecentPicks picks={picks} />
            }
            settingsSection={
              <NotificationSettings
                enabled={notificationsEnabled}
                onEnabledChange={setNotificationsEnabled}
                mode={notificationsMode}
                onModeChange={setNotificationsMode}
                permissionState={notificationsPermission}
              />
            }
          />
        )}

        {/* Main Tabbed Content */}
        <div className="flex-1 overflow-hidden">
          <Tabs
            value={activeTab}
            onValueChange={(value) =>
              setActiveTab(value as "participants" | "board" | "teams")
            }
            className="h-full flex flex-col"
          >
            <TabsList className="mx-4 mt-4">
              <TabsTrigger value="participants">Available Participants</TabsTrigger>
              <TabsTrigger value="board">Draft Board</TabsTrigger>
              <TabsTrigger value="teams">Teams Drafted</TabsTrigger>
            </TabsList>

            <TabsContent value="participants" className="flex-1 overflow-hidden m-0">
              <div className="h-full">
                <AvailableParticipantsSection
                  participants={filteredParticipants}
                  searchQuery={searchQuery}
                  sportFilter={sportFilter}
                  hideDrafted={hideDrafted}
                  hideIneligible={hideIneligible}
                  uniqueSports={uniqueSports}
                  draftedParticipantIds={draftedParticipantIds}
                  queue={queue}
                  eligibility={eligibility}
                  canPick={canPick}
                  hasTeam={!!userTeam}
                  onSearchChange={setSearchQuery}
                  onSportFilterChange={setSportFilter}
                  onHideDraftedChange={setHideDrafted}
                  onHideIneligibleChange={setHideIneligible}
                  onMakePick={handleMakePick}
                  onAddToQueue={handleAddToQueue}
                  onRemoveFromQueue={handleRemoveFromQueue}
                />
              </div>
            </TabsContent>

            <TabsContent value="board" className="flex-1 overflow-hidden m-0">
              <DraftGridSection
                draftSlots={draftSlots}
                draftGrid={draftGrid}
                currentPick={currentPick}
                teamTimers={teamTimers}
                autodraftStatus={autodraftStatus}
                connectedTeams={connectedTeams}
                isCommissioner={isCommissioner}
                onForceAutopick={handleForceAutopick}
                onForceManualPickOpen={(pickNumber, teamId) => {
                  setSelectedPickSlot({ pickNumber, teamId });
                  setDialogSearchQuery("");
                  setDialogSportFilter("all");
                  setForcePickDialogOpen(true);
                }}
                onReplacePick={isCommissioner ? handleReplacePickOpen : undefined}
                onRollbackToPick={isCommissioner && !isDraftComplete ? handleRollbackToPick : undefined}
              />
            </TabsContent>

            <TabsContent value="teams" className="flex-1 overflow-hidden m-0">
              <div className="h-full">
                <TeamsDraftedGrid
                  draftSlots={draftSlots}
                  picks={picks}
                  sports={seasonSportsData}
                  season={{ numFlexPicks }}
                />
              </div>
            </TabsContent>
          </Tabs>
        </div>
      </div>

      {/* Force Manual Pick Dialog */}
      <Dialog
        open={forcePickDialogOpen && !!selectedPickSlot}
        onOpenChange={(open) => {
          setForcePickDialogOpen(open);
          if (!open) setSelectedPickSlot(null);
        }}
      >
        <DialogContent className="max-w-2xl max-h-[80vh] flex flex-col gap-0 p-0">
          <DialogHeader className="p-6 pb-4">
            <DialogTitle>Force Manual Pick</DialogTitle>
            <DialogDescription>
              Select a participant to draft for Pick #{selectedPickSlot?.pickNumber}
            </DialogDescription>
          </DialogHeader>

          <div className="px-6 pb-4">
            {/* Search and Filter */}
            <div className="flex gap-2 mb-4">
              <input
                type="text"
                placeholder="Search participants..."
                className="flex-1 px-3 py-2 border rounded-md bg-background"
                value={dialogSearchQuery}
                onChange={(e) => setDialogSearchQuery(e.target.value)}
              />
              <select
                className="px-3 py-2 border rounded-md bg-background"
                value={dialogSportFilter}
                onChange={(e) => setDialogSportFilter(e.target.value)}
              >
                <option value="all">All Sports</option>
                {uniqueSports.map((sport) => (
                  <option key={sport} value={sport}>
                    {sport}
                  </option>
                ))}
              </select>
            </div>

            {/* Participant List */}
            <div className="max-h-96 overflow-y-auto border rounded-lg">
              <table className="w-full text-sm">
                <thead className="bg-muted sticky top-0">
                  <tr>
                    <th className="text-left p-3 font-semibold">Participant</th>
                    <th className="text-left p-3 font-semibold">Sport</th>
                    <th className="text-right p-3 font-semibold">Action</th>
                  </tr>
                </thead>
                <tbody>
                  {dialogFilteredParticipants.map((participant: any) => {
                    const isEligible = forcePickEligibility
                      ? forcePickEligibility.eligibleSportIds.has(participant.sport.id)
                      : true;
                    const ineligibleReason = forcePickEligibility?.ineligibleReasons[participant.sport.id];

                    return (
                      <tr
                        key={participant.id}
                        className={`border-t ${
                          isEligible ? "hover:bg-muted/50" : "bg-destructive/10 opacity-60"
                        }`}
                        title={!isEligible ? ineligibleReason : undefined}
                      >
                        <td className="p-3">
                          <div className="flex items-center gap-2">
                            <span className={`font-medium ${!isEligible ? "text-muted-foreground" : ""}`}>
                              {participant.name}
                            </span>
                            {!isEligible && (
                              <Badge
                                variant="destructive"
                                className="text-xs"
                                title={ineligibleReason}
                              >
                                Ineligible
                              </Badge>
                            )}
                          </div>
                        </td>
                        <td className="p-3 text-muted-foreground">
                          {participant.sport.name}
                        </td>
                        <td className="p-3 text-right">
                          <Button
                            size="sm"
                            onClick={() => handleForceManualPick(participant.id)}
                            disabled={!isEligible}
                            title={!isEligible ? ineligibleReason : undefined}
                          >
                            Draft
                          </Button>
                        </td>
                      </tr>
                    );
                  })}
                </tbody>
              </table>
            </div>
          </div>

          <DialogFooter className="px-6 pb-6">
            <Button variant="outline" onClick={() => setForcePickDialogOpen(false)}>
              Cancel
            </Button>
          </DialogFooter>
        </DialogContent>
      </Dialog>

      {/* Replace Pick Dialog */}
      <Dialog
        open={replacePickDialogOpen && !!replacePickSlot}
        onOpenChange={(open) => {
          setReplacePickDialogOpen(open);
          if (!open) setReplacePickSlot(null);
        }}
      >
        <DialogContent className="max-w-2xl max-h-[80vh] flex flex-col gap-0 p-0">
          <DialogHeader className="p-6 pb-4">
            <DialogTitle>Replace Pick</DialogTitle>
            <DialogDescription>
              Select a participant to replace the current pick at slot #{replacePickSlot?.pickNumber}
            </DialogDescription>
          </DialogHeader>

          <div className="px-6 pb-4">
            <div className="flex gap-2 mb-4">
              <input
                type="text"
                placeholder="Search participants..."
                className="flex-1 px-3 py-2 border rounded-md bg-background"
                value={dialogSearchQuery}
                onChange={(e) => setDialogSearchQuery(e.target.value)}
              />
              <select
                className="px-3 py-2 border rounded-md bg-background"
                value={dialogSportFilter}
                onChange={(e) => setDialogSportFilter(e.target.value)}
              >
                <option value="all">All Sports</option>
                {uniqueSports.map((sport) => (
                  <option key={sport} value={sport}>
                    {sport}
                  </option>
                ))}
              </select>
            </div>

            <div className="max-h-96 overflow-y-auto border rounded-lg">
              <table className="w-full text-sm">
                <thead className="bg-muted sticky top-0">
                  <tr>
                    <th className="text-left p-3 font-semibold">Participant</th>
                    <th className="text-left p-3 font-semibold">Sport</th>
                    <th className="text-right p-3 font-semibold">Action</th>
                  </tr>
                </thead>
                <tbody>
                  {replaceDialogFilteredParticipants.map((participant: any) => {
                    const isCurrentPick = participant.id === replacePickSlot?.oldParticipantId;
                    const isEligible = replacePickEligibility
                      ? replacePickEligibility.eligibleSportIds.has(participant.sport.id)
                      : true;
                    const ineligibleReason = replacePickEligibility?.ineligibleReasons[participant.sport.id];

                    return (
                      <tr
                        key={participant.id}
                        className={`border-t ${
                          isEligible ? "hover:bg-muted/50" : "bg-destructive/10 opacity-60"
                        }`}
                        title={!isEligible ? ineligibleReason : undefined}
                      >
                        <td className="p-3">
                          <div className="flex items-center gap-2">
                            <span className={`font-medium ${!isEligible ? "text-muted-foreground" : ""}`}>
                              {participant.name}
                            </span>
                            {isCurrentPick && (
                              <Badge variant="outline" className="text-xs">
                                Current
                              </Badge>
                            )}
                            {!isEligible && (
                              <Badge
                                variant="destructive"
                                className="text-xs"
                                title={ineligibleReason}
                              >
                                Ineligible
                              </Badge>
                            )}
                          </div>
                        </td>
                        <td className="p-3 text-muted-foreground">
                          {participant.sport.name}
                        </td>
                        <td className="p-3 text-right">
                          <Button
                            size="sm"
                            onClick={() => handleReplacePick(participant.id)}
                            disabled={!isEligible}
                            title={!isEligible ? ineligibleReason : undefined}
                          >
                            {isCurrentPick ? "Keep" : "Draft"}
                          </Button>
                        </td>
                      </tr>
                    );
                  })}
                </tbody>
              </table>
            </div>
          </div>

          <DialogFooter className="px-6 pb-6">
            <Button variant="outline" onClick={() => setReplacePickDialogOpen(false)}>
              Cancel
            </Button>
          </DialogFooter>
        </DialogContent>
      </Dialog>

      {/* Rollback Confirmation Dialog */}
      <Dialog
        open={rollbackConfirmOpen}
        onOpenChange={(open) => {
          setRollbackConfirmOpen(open);
          if (!open) setRollbackPickNumber(null);
        }}
      >
        <DialogContent>
          <DialogHeader>
            <DialogTitle>Roll Back Draft</DialogTitle>
            <DialogDescription>
              {rollbackPickNumber !== null && (() => {
                const count = picks.filter((p: any) => p.pickNumber >= rollbackPickNumber).length;
                return `This will erase ${count} pick${count === 1 ? "" : "s"} (pick #${rollbackPickNumber} through the most recent) and return the draft to pick #${rollbackPickNumber}. This cannot be undone.`;
              })()}
            </DialogDescription>
          </DialogHeader>
          <DialogFooter>
            <Button variant="outline" onClick={() => setRollbackConfirmOpen(false)}>
              Cancel
            </Button>
            <Button variant="destructive" onClick={handleConfirmRollback} disabled={isRollingBack}>
              {isRollingBack ? "Rolling Back..." : "Roll Back"}
            </Button>
          </DialogFooter>
        </DialogContent>
      </Dialog>

      {/* Connection Overlay - blocks interaction until socket connects */}
      <ConnectionOverlay
        isConnected={isConnected}
        isReconnecting={isReconnecting}
        connectionError={connectionError}
      />
    </div>
  );
}