import { describe, expect, it } from "vitest";
import { loadConfig, ConfigError } from "../src/config.ts";

const baseEnv = {
  STATION: "minecraft",
  RTMP_URL: "rtmp://example/live/key",
  LIQUIDSOAP_PCM: "tcp://liquidsoap:9100",
  NOW_PLAYING_DIR: "/now-playing",
  LIBRARY_DIR: "/library",
  STYLE: "denpa",
  TZ: "Asia/Tokyo",
  VIDEO_BITRATE: "4500k",
  AUDIO_BITRATE: "160k",
  FRAMERATE: "30",
  RESOLUTION: "1920x1080",
  STATION_TUNE_IN_URL: "denpa.femboy.page",
  HEALTH_PORT: "12010",
  LOG_LEVEL: "info",
};

describe("loadConfig", () => {
  it("parses required fields", () => {
    const cfg = loadConfig(baseEnv);
    expect(cfg.station).toBe("minecraft");
    expect(cfg.rtmpUrl).toBe("rtmp://example/live/key");
    expect(cfg.style).toBe("denpa");
    expect(cfg.framerate).toBe(30);
  });

  it("rejects invalid style", () => {
    expect(() => loadConfig({ ...baseEnv, STYLE: "weird" })).toThrow(ConfigError);
  });

  it("rejects malformed rtmp url", () => {
    expect(() => loadConfig({ ...baseEnv, RTMP_URL: "not-a-url" })).toThrow(ConfigError);
  });

  it("rejects missing required field", () => {
    const { STATION: _omit, ...rest } = baseEnv;
    expect(() => loadConfig(rest)).toThrow(ConfigError);
  });

  it("parses pcm tcp url", () => {
    const cfg = loadConfig(baseEnv);
    expect(cfg.pcmHost).toBe("liquidsoap");
    expect(cfg.pcmPort).toBe(9100);
  });
});