import type { Route } from "./+types/admin.sports-seasons.$id.expected-values";
import { findSportsSeasonById } from "~/models/sports-season";
import { findParticipantsBySportsSeasonId } from "~/models/participant";
import {
  upsertParticipantEV,
  getAllParticipantEVsForSeason
} from "~/models/participant-expected-value";
import type { ProbabilitySource } from "~/models/participant-expected-value";

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 participants = await findParticipantsBySportsSeasonId(params.id);
  const existingEVs = await getAllParticipantEVsForSeason(params.id);

  // Create a map of participant ID to EV data
  const evMap = new Map(existingEVs.map(ev => [ev.participantId, ev]));

  return {
    sportsSeason: sportsSeason as typeof sportsSeason & { sport: { id: string; name: string; type: string; slug: string } },
    participants,
    existingEVs: evMap,
  };
}

export async function action({ request, params }: Route.ActionArgs) {
  const formData = await request.formData();
  const participantId = formData.get("participantId");
  const source = (formData.get("source") || "manual") as ProbabilitySource;

  if (typeof participantId !== "string") {
    return { error: "Participant ID is required" };
  }

  // Get probability values (entered as percentages, convert to decimals)
  const probFirst = parseFloat(formData.get("probFirst") as string || "0") / 100;
  const probSecond = parseFloat(formData.get("probSecond") as string || "0") / 100;
  const probThird = parseFloat(formData.get("probThird") as string || "0") / 100;
  const probFourth = parseFloat(formData.get("probFourth") as string || "0") / 100;
  const probFifth = parseFloat(formData.get("probFifth") as string || "0") / 100;
  const probSixth = parseFloat(formData.get("probSixth") as string || "0") / 100;
  const probSeventh = parseFloat(formData.get("probSeventh") as string || "0") / 100;
  const probEighth = parseFloat(formData.get("probEighth") as string || "0") / 100;

  // Use default scoring rules
  // Note: Actual league seasons may have different scoring rules
  // EVs will be recalculated when used in a specific league
  const scoringRules = {
    pointsFor1st: 100,
    pointsFor2nd: 70,
    pointsFor3rd: 50,
    pointsFor4th: 40,
    pointsFor5th: 25,
    pointsFor6th: 25,
    pointsFor7th: 15,
    pointsFor8th: 15,
  };

  try {
    const result = await upsertParticipantEV({
      participantId,
      sportsSeasonId: params.id,
      probabilities: {
        probFirst,
        probSecond,
        probThird,
        probFourth,
        probFifth,
        probSixth,
        probSeventh,
        probEighth,
      },
      scoringRules,
      source,
    });

    return {
      success: true,
      participantId,
      expectedValue: parseFloat(result.expectedValue),
    };
  } catch (error) {
    console.error("Error saving probabilities:", error);
    return {
      error: error instanceof Error ? error.message : "Failed to save probabilities"
    };
  }
}