import type { Route } from "./+types/admin.sports-seasons.$id.events";
import { redirect } from "react-router";
import { findSportsSeasonById } from "~/models/sports-season";
import {
  getScoringEventsForSportsSeason,
  createScoringEvent,
  deleteScoringEvent,
  type CreateScoringEventData,
} from "~/models/scoring-event";
import { getQPStandings } from "~/models/qualifying-points";
import { finalizeQualifyingPoints } from "~/models/scoring-calculator";
import { getScoringRules } from "~/models/scoring-rules";

export async function loader({ params }: Route.LoaderArgs) {
  const sportsSeason = await findSportsSeasonById(params.id);

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

  const events = await getScoringEventsForSportsSeason(params.id);

  // For qualifying sports seasons, get QP standings
  let qpStandings = null;
  let scoringRules = null;
  if (sportsSeason.scoringPattern === "qualifying_points") {
    qpStandings = await getQPStandings(params.id);

    // Get scoring rules from a linked season (if any)
    // For now, we'll use default scoring for projection
    // Note: QP standings are global to the sports season, not league-specific
    // When showing to league members, we would filter by their league's scoring rules
  }

  return {
    sportsSeason: sportsSeason as typeof sportsSeason & {
      sport: { id: string; name: string; type: string; slug: string };
    },
    events,
    qpStandings,
    scoringRules,
  };
}

export async function action({ request, params }: Route.ActionArgs) {
  const formData = await request.formData();
  const intent = formData.get("intent");

  if (intent === "finalize-qp") {
    try {
      await finalizeQualifyingPoints(params.id);
      return { success: "Qualifying points finalized and fantasy placements assigned to top 8!" };
    } catch (error) {
      console.error("Error finalizing qualifying points:", error);
      return { error: error instanceof Error ? error.message : "Failed to finalize qualifying points" };
    }
  }

  if (intent === "delete-event") {
    const eventId = formData.get("eventId");

    if (typeof eventId !== "string" || !eventId) {
      return { error: "Event ID is required" };
    }

    try {
      await deleteScoringEvent(eventId);
      return { success: "Event deleted successfully" };
    } catch (error) {
      console.error("Error deleting event:", error);
      return { error: "Failed to delete event" };
    }
  }

  const name = formData.get("name");
  const eventType = formData.get("eventType");
  const eventDate = formData.get("eventDate");

  // Validation
  if (typeof name !== "string" || !name.trim()) {
    return { error: "Event name is required" };
  }

  if (
    eventType !== "playoff_game" &&
    eventType !== "major_tournament" &&
    eventType !== "final_standings"
  ) {
    return { error: "Invalid event type" };
  }

  // Get the sports season to check if this should be a qualifying event
  const sportsSeason = await findSportsSeasonById(params.id);
  if (!sportsSeason) {
    return { error: "Sports season not found" };
  }

  // Automatically mark major tournaments as qualifying events for qualifying_points sports seasons
  const isQualifyingEvent =
    sportsSeason.scoringPattern === "qualifying_points" &&
    eventType === "major_tournament";

  const eventData: CreateScoringEventData = {
    sportsSeasonId: params.id,
    name: name.trim(),
    eventType: eventType as "playoff_game" | "major_tournament" | "final_standings",
    eventDate: typeof eventDate === "string" && eventDate ? new Date(eventDate) : undefined,
    isQualifyingEvent,
  };

  try {
    const event = await createScoringEvent(eventData);
    return redirect(`/admin/sports-seasons/${params.id}/events/${event.id}`);
  } catch (error) {
    console.error("Error creating scoring event:", error);
    return { error: "Failed to create scoring event. Please try again." };
  }
}