import { describe, it, expect } from "vitest";
import { render, screen } from "@testing-library/react";
import { RegularSeasonStandings } from "../RegularSeasonStandings";

function makeRow(overrides: Partial<{
  id: string;
  participantId: string;
  wins: number;
  losses: number;
  otLosses: number | null;
  gamesPlayed: number;
  winPct: string | null;
  gamesBack: string | null;
  conference: string | null;
  division: string | null;
  conferenceRank: number | null;
  divisionRank: number | null;
  leagueRank: number | null;
  streak: string | null;
  lastTen: string | null;
  homeRecord: string | null;
  awayRecord: string | null;
  syncedAt: string | null;
  participant: { id: string; name: string; shortName?: string | null };
}> = {}) {
  return {
    id: overrides.id ?? "row-1",
    participantId: overrides.participantId ?? "p-1",
    wins: overrides.wins ?? 40,
    losses: overrides.losses ?? 28,
    otLosses: overrides.otLosses ?? null,
    gamesPlayed: overrides.gamesPlayed ?? 68,
    winPct: overrides.winPct ?? "0.5882",
    gamesBack: overrides.gamesBack ?? null,
    conference: overrides.conference ?? null,
    division: overrides.division ?? null,
    conferenceRank: overrides.conferenceRank ?? null,
    divisionRank: overrides.divisionRank ?? null,
    leagueRank: overrides.leagueRank ?? 1,
    streak: overrides.streak ?? null,
    lastTen: overrides.lastTen ?? null,
    homeRecord: overrides.homeRecord ?? null,
    awayRecord: overrides.awayRecord ?? null,
    syncedAt: overrides.syncedAt ?? null,
    participant: overrides.participant ?? { id: "p-1", name: "Boston Celtics" },
  };
}

const NO_OWNERSHIPS = {};
const NO_USER_IDS: string[] = [];

describe("RegularSeasonStandings", () => {
  it("renders nothing when standings array is empty", () => {
    const { container } = render(
      <RegularSeasonStandings
        standings={[]}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
      />
    );
    expect(container.firstChild).toBeNull();
  });

  it("renders team names", () => {
    render(
      <RegularSeasonStandings
        standings={[
          makeRow({ participant: { id: "p-1", name: "Boston Celtics" } }),
          makeRow({ id: "row-2", participantId: "p-2", participant: { id: "p-2", name: "Toronto Raptors" } }),
        ]}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
      />
    );
    expect(screen.getByText("Boston Celtics")).toBeInTheDocument();
    expect(screen.getByText("Toronto Raptors")).toBeInTheDocument();
  });

  it("shows OTL column when showOtLosses=true", () => {
    render(
      <RegularSeasonStandings
        standings={[makeRow({ otLosses: 5 })]}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
        showOtLosses={true}
      />
    );
    expect(screen.getByText("OTL")).toBeInTheDocument();
  });

  it("hides OTL column when showOtLosses=false (default)", () => {
    render(
      <RegularSeasonStandings
        standings={[makeRow()]}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
      />
    );
    expect(screen.queryByText("OTL")).not.toBeInTheDocument();
  });

  it("renders conference headings and inline division labels when present", () => {
    render(
      <RegularSeasonStandings
        standings={[
          makeRow({ conference: "Eastern", division: "Atlantic", conferenceRank: 1, participant: { id: "p-1", name: "Boston Celtics" } }),
          makeRow({ id: "row-2", participantId: "p-2", conference: "Western", division: "Pacific", conferenceRank: 1, participant: { id: "p-2", name: "LA Lakers" } }),
        ]}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
      />
    );
    // Conference group headings are rendered as <h3>
    expect(screen.getByText(/Eastern Conference/i)).toBeInTheDocument();
    expect(screen.getByText(/Western Conference/i)).toBeInTheDocument();
    // Division is now shown as an inline label per row (not a section header)
    expect(screen.getAllByText(/Atlantic/i).length).toBeGreaterThan(0);
    expect(screen.getAllByText(/Pacific/i).length).toBeGreaterThan(0);
  });

  it("shows ownership badge for drafted teams", () => {
    render(
      <RegularSeasonStandings
        standings={[makeRow({ participantId: "p-1" })]}
        teamOwnerships={{
          "p-1": { teamName: "Team Alpha", ownerName: "Alice", teamId: "t-1" },
        }}
        userParticipantIds={NO_USER_IDS}
      />
    );
    expect(screen.getByText("Alice")).toBeInTheDocument();
  });

  it("does not show badge for undrafted teams", () => {
    render(
      <RegularSeasonStandings
        standings={[makeRow({ participantId: "p-1" })]}
        teamOwnerships={{}}
        userParticipantIds={NO_USER_IDS}
      />
    );
    // No owner badge should be present
    expect(screen.queryByText(/Alice/i)).not.toBeInTheDocument();
  });

  it("applies different styling for user's own team", () => {
    const { container } = render(
      <RegularSeasonStandings
        standings={[makeRow({ participantId: "p-1" })]}
        teamOwnerships={{}}
        userParticipantIds={["p-1"]}
      />
    );
    // The user's row should have a primary styling class
    const userRow = container.querySelector("tr.bg-primary\\/5");
    expect(userRow).not.toBeNull();
  });

  it("renders streak with correct color class for wins", () => {
    render(
      <RegularSeasonStandings
        standings={[makeRow({ streak: "W5" })]}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
      />
    );
    const streakEl = screen.getByText("W5");
    expect(streakEl.className).toContain("emerald");
  });

  it("renders streak with destructive class for losses", () => {
    render(
      <RegularSeasonStandings
        standings={[makeRow({ streak: "L3" })]}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
      />
    );
    const streakEl = screen.getByText("L3");
    expect(streakEl.className).toContain("destructive");
  });
});

// ─── mlb-divisions display mode ───────────────────────────────────────────────

function makeAlDivisionRows() {
  return [
    // AL East — division winner (divisionRank=1) + 2 WC candidates (divisionRank=2,3)
    makeRow({ id: "r1", participantId: "p1", conference: "AL", division: "AL East", divisionRank: 1, conferenceRank: 1, participant: { id: "p1", name: "Baltimore Orioles" } }),
    makeRow({ id: "r2", participantId: "p2", conference: "AL", division: "AL East", divisionRank: 2, conferenceRank: 4, participant: { id: "p2", name: "Boston Red Sox" } }),
    // AL Central — division winner
    makeRow({ id: "r3", participantId: "p3", conference: "AL", division: "AL Central", divisionRank: 1, conferenceRank: 2, participant: { id: "p3", name: "Cleveland Guardians" } }),
    makeRow({ id: "r4", participantId: "p4", conference: "AL", division: "AL Central", divisionRank: 2, conferenceRank: 5, participant: { id: "p4", name: "Minnesota Twins" } }),
    // AL West — division winner
    makeRow({ id: "r5", participantId: "p5", conference: "AL", division: "AL West", divisionRank: 1, conferenceRank: 3, participant: { id: "p5", name: "Houston Astros" } }),
    makeRow({ id: "r6", participantId: "p6", conference: "AL", division: "AL West", divisionRank: 2, conferenceRank: 6, participant: { id: "p6", name: "Seattle Mariners" } }),
    // NL East
    makeRow({ id: "r7", participantId: "p7", conference: "NL", division: "NL East", divisionRank: 1, conferenceRank: 1, participant: { id: "p7", name: "Philadelphia Phillies" } }),
    makeRow({ id: "r8", participantId: "p8", conference: "NL", division: "NL East", divisionRank: 2, conferenceRank: 4, participant: { id: "p8", name: "Atlanta Braves" } }),
    // NL Central
    makeRow({ id: "r9", participantId: "p9", conference: "NL", division: "NL Central", divisionRank: 1, conferenceRank: 2, participant: { id: "p9", name: "Milwaukee Brewers" } }),
    makeRow({ id: "r10", participantId: "p10", conference: "NL", division: "NL Central", divisionRank: 2, conferenceRank: 5, participant: { id: "p10", name: "Chicago Cubs" } }),
    // NL West
    makeRow({ id: "r11", participantId: "p11", conference: "NL", division: "NL West", divisionRank: 1, conferenceRank: 3, participant: { id: "p11", name: "Los Angeles Dodgers" } }),
    makeRow({ id: "r12", participantId: "p12", conference: "NL", division: "NL West", divisionRank: 2, conferenceRank: 6, participant: { id: "p12", name: "San Diego Padres" } }),
  ];
}

describe("RegularSeasonStandings mlb-divisions mode", () => {
  it("renders 'AL League' and 'NL League' headings (not Conference)", () => {
    render(
      <RegularSeasonStandings
        standings={makeAlDivisionRows()}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
        displayMode="mlb-divisions"
      />
    );
    expect(screen.getByText(/AL League/i)).toBeInTheDocument();
    expect(screen.getByText(/NL League/i)).toBeInTheDocument();
    expect(screen.queryByText(/AL Conference/i)).not.toBeInTheDocument();
    expect(screen.queryByText(/NL Conference/i)).not.toBeInTheDocument();
  });

  it("renders division section headings", () => {
    render(
      <RegularSeasonStandings
        standings={makeAlDivisionRows()}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
        displayMode="mlb-divisions"
      />
    );
    expect(screen.getByText("AL East Division")).toBeInTheDocument();
    expect(screen.getByText("AL Central Division")).toBeInTheDocument();
    expect(screen.getByText("AL West Division")).toBeInTheDocument();
  });

  it("renders Wild Card section heading", () => {
    render(
      <RegularSeasonStandings
        standings={makeAlDivisionRows()}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
        displayMode="mlb-divisions"
      />
    );
    expect(screen.getAllByText("Wild Card").length).toBeGreaterThan(0);
  });

  it("division section contains only the division winner (divisionRank=1)", () => {
    render(
      <RegularSeasonStandings
        standings={makeAlDivisionRows()}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
        displayMode="mlb-divisions"
      />
    );
    // Division winners should be rendered
    expect(screen.getByText("Baltimore Orioles")).toBeInTheDocument();
    expect(screen.getByText("Cleveland Guardians")).toBeInTheDocument();
    expect(screen.getByText("Houston Astros")).toBeInTheDocument();
    // Wild card teams (rank > 1) also rendered in Wild Card section
    expect(screen.getByText("Boston Red Sox")).toBeInTheDocument();
  });

  it("shows 'Playoff Line' after 3 teams in the Wild Card section", () => {
    // Add enough WC teams to trigger the playoff line (need >3 in the WC section)
    const standings = [
      ...makeAlDivisionRows(),
      makeRow({ id: "r13", participantId: "p13", conference: "AL", division: "AL East", divisionRank: 3, conferenceRank: 7, participant: { id: "p13", name: "Tampa Bay Rays" } }),
      makeRow({ id: "r14", participantId: "p14", conference: "AL", division: "AL Central", divisionRank: 3, conferenceRank: 8, participant: { id: "p14", name: "Detroit Tigers" } }),
    ];
    render(
      <RegularSeasonStandings
        standings={standings}
        teamOwnerships={NO_OWNERSHIPS}
        userParticipantIds={NO_USER_IDS}
        displayMode="mlb-divisions"
      />
    );
    expect(screen.getAllByText(/Playoff Line/i).length).toBeGreaterThan(0);
  });
});