import { describe, it, expect } from "vitest";
import { normalizeTeamName, findMatchingTeamName } from "../normalize-team-name";

describe("normalizeTeamName", () => {
  it("lowercases and trims", () => {
    expect(normalizeTeamName("  Boston Celtics  ")).toBe("boston celtics");
  });

  it("collapses multiple spaces", () => {
    expect(normalizeTeamName("Los  Angeles  Lakers")).toBe("los angeles lakers");
  });

  it("is idempotent", () => {
    const name = "oklahoma city thunder";
    expect(normalizeTeamName(name)).toBe(name);
  });
});

describe("findMatchingTeamName", () => {
  const participants = [
    "Boston Celtics",
    "Los Angeles Lakers",
    "Oklahoma City Thunder",
    "Golden State Warriors",
    "Toronto Raptors",
  ];

  it("returns exact case-insensitive match", () => {
    expect(findMatchingTeamName("Boston Celtics", participants)).toBe("Boston Celtics");
    expect(findMatchingTeamName("boston celtics", participants)).toBe("Boston Celtics");
    expect(findMatchingTeamName("TORONTO RAPTORS", participants)).toBe("Toronto Raptors");
  });

  it("matches partial city+team via substring (e.g. API returns city only)", () => {
    // "Golden State" is a substring of "Golden State Warriors"
    expect(findMatchingTeamName("Golden State", participants)).toBe("Golden State Warriors");
    // "Oklahoma City" is a substring of "Oklahoma City Thunder"
    expect(findMatchingTeamName("Oklahoma City", participants)).toBe("Oklahoma City Thunder");
  });

  it("returns null for unmatched name", () => {
    expect(findMatchingTeamName("Phoenix Suns", participants)).toBeNull();
  });

  it("returns null for empty participants list", () => {
    expect(findMatchingTeamName("Boston Celtics", [])).toBeNull();
  });
});