import { data, type ActionFunctionArgs } from "react-router";
import { getAuth } from "@clerk/react-router/server";
import {
  addToQueue,
  removeFromQueue,
  reorderQueueWithSeason,
  findTeamById,
  getTeamQueue,
} from "~/models";

export async function action(args: ActionFunctionArgs) {
  const { userId } = await getAuth(args);
  if (!userId) {
    return data({ error: "Unauthorized" }, { status: 401 });
  }

  const { request } = args;

  const formData = await request.formData();
  const actionType = formData.get("action");
  const teamId = formData.get("teamId");

  if (!teamId || typeof teamId !== "string") {
    return data({ error: "Team ID is required" }, { status: 400 });
  }

  // Verify user owns this team
  const team = await findTeamById(teamId);
  if (!team || team.ownerId !== userId) {
    return data({ error: "You do not own this team" }, { status: 403 });
  }

  try {
    switch (actionType) {
      case "add-to-queue": {
        const participantId = formData.get("participantId");
        const seasonId = formData.get("seasonId");

        if (!participantId || typeof participantId !== "string") {
          return data({ error: "Participant ID is required" }, { status: 400 });
        }
        if (!seasonId || typeof seasonId !== "string") {
          return data({ error: "Season ID is required" }, { status: 400 });
        }

        // Get current queue to determine position
        const currentQueue = await getTeamQueue(teamId);
        const queuePosition = currentQueue.length + 1;

        await addToQueue({
          seasonId,
          teamId,
          participantId,
          queuePosition,
        });

        return data({ success: true });
      }

      case "remove-from-queue": {
        const queueItemId = formData.get("queueItemId");

        if (!queueItemId || typeof queueItemId !== "string") {
          return data({ error: "Queue item ID is required" }, { status: 400 });
        }

        await removeFromQueue(queueItemId);
        return data({ success: true });
      }

      case "reorder-queue": {
        const participantIds = formData.get("participantIds");
        const seasonId = formData.get("seasonId");

        if (!participantIds || typeof participantIds !== "string") {
          return data({ error: "Participant IDs are required" }, { status: 400 });
        }
        if (!seasonId || typeof seasonId !== "string") {
          return data({ error: "Season ID is required" }, { status: 400 });
        }

        const idsArray = JSON.parse(participantIds);
        await reorderQueueWithSeason(seasonId, teamId, idsArray);

        return data({ success: true });
      }

      default:
        return data({ error: "Invalid action" }, { status: 400 });
    }
  } catch (error) {
    console.error("Draft action error:", error);
    return data({ error: "Failed to perform action" }, { status: 500 });
  }
}