/**
   * Get a colored, pretty-printed representation of a field
   */
  private prettyFieldString(field: API.Field): string {
    let result = "";

    const parsedName = util.parseFieldName(field.name);

    result +=
      "[" +
      clc.cyan(parsedName.collectionGroupId) +
      "." +
      clc.yellow(parsedName.fieldPath) +
      "] --";

    const fieldIndexes = field.indexConfig.indexes || [];
    if (fieldIndexes.length > 0) {
      fieldIndexes.forEach((index) => {
        const firstField = index.fields[0];
        const mode = firstField.order || firstField.arrayConfig;
        result += ` (${mode})`;
      });
    } else {
      result += " (no indexes)";
    }

    return result;
  }

  /**
   * Get a colored, pretty-printed representation of an index.
   */
  private prettyIndexString(index: API.Index): string {
    let result = "";

    if (index.state) {
      const stateMsg = `[${index.state}] `;

      if (index.state === API.State.READY) {
        result += clc.green(stateMsg);
      } else if (index.state === API.State.CREATING) {
        result += clc.yellow(stateMsg);
      } else {
        result += clc.red(stateMsg);
      }
    }

    const nameInfo = util.parseIndexName(index.name);

    result += clc.cyan(`(${nameInfo.collectionGroupId})`);
    result += " -- ";

    index.fields.forEach((field) => {
      if (field.fieldPath === "__name__") {
        return;
      }

      // Normal field indexes have an "order" while array indexes have an "arrayConfig",
      // we want to display whichever one is present.
      const orderOrArrayConfig = field.order ? field.order : field.arrayConfig;
      result += `(${field.fieldPath},${orderOrArrayConfig}) `;
    });

    return result;
  }

export function assertHasOneOf(obj: any, props: string[]): void {
  const objString = clc.cyan(JSON.stringify(obj));
  let count = 0;
  props.forEach((prop) => {
    if (obj[prop]) {
      count++;
    }
  });

  if (count !== 1) {
    throw new FirebaseError(`Must contain exactly one of "${props.join(",")}": ${objString}`);
  }
}

export function assertHas(obj: any, prop: string): void {
  const objString = clc.cyan(JSON.stringify(obj));
  if (!obj[prop]) {
    throw new FirebaseError(`Must contain "${prop}": ${objString}`);
  }
}

export function assertEnum(obj: any, prop: string, valid: any[]): void {
  const objString = clc.cyan(JSON.stringify(obj));
  if (valid.indexOf(obj[prop]) < 0) {
    throw new FirebaseError(`Field "${prop}" must be one of  ${valid.join(", ")}: ${objString}`);
  }
}

    public static showField(game: goita.Game, turn: number) {
        const player = game.board.players[turn];
        if (player.no % 2 === 0) {
            console.write("your team:" + clc.green(game.scores[0]) + " opponent:" + clc.green(game.scores[1]) + "\n");
        } else {
            console.write("opponent:" + clc.green(game.scores[0]) + " your team:" + clc.green(game.scores[1]) + "\n");
        }
        console.write("round: " + game.roundCount + "\n");
        console.write("------------------------\n");

        const history = new Array<string>();
        history.push("p1 ", "p2 ", "p3 ", "p4 ");
        for (let i = 0; i < game.board.history.dealer; i++) {
            history[i] += "|     ";
        }
        for (let i = 0; i < game.board.history.moveStack.length; i++) {
            const m = game.board.history.moveStack[i];
            const p = goita.Util.shiftTurn(i % 4, game.board.history.dealer);
            let hs = "";
            if (m.pass) {
                hs = clc.blackBright("なし");
            } else if (m.faceDown) {
                hs = goita.Koma.hidden.Text + m.attack.Text;
                hs = clc.cyanBright(hs);
            } else {
                hs = m.block.Text + m.attack.Text;
                hs = clc.cyanBright(hs);
            }
            history[p] += "| " + hs;
        }
        for (const h of history) {
            console.write(h);
            console.write("\n");
        }
        console.write("------------------------\n");
        const pLabel = new Array<string>();
        const bLine = new Array<goita.Koma[]>();
        const aLine = new Array<goita.Koma[]>();
        const empty = "＿";

        for (const p of game.board.players) {
            const l = "p" + (p.no + 1) + ":";
            pLabel.push(l);
            const b = p.field.filter((k, i) => i % 2 === 0);
            bLine.push(b);
            const a = p.field.filter((k, i) => i % 2 !== 0);
            aLine.push(a);
        }

        const pNo = goita.Util.shiftTurn(player.no, 2);
        console.write("    ");
        console.write(pLabel[pNo]);
        for (const a of aLine[pNo].reverse()) {
            console.write(clc.cyan(a === goita.Koma.empty ? empty : a.Text));
        }
        console.write("\n");
        console.write("       ");
        for (const b of bLine[pNo].reverse()) {
            console.write(clc.cyan(b === goita.Koma.empty ? empty : b.Text));
        }
        console.write("\n");

        const lOpNo = goita.Util.shiftTurn(player.no, -1);
        const rOpNo = goita.Util.shiftTurn(player.no, 1);

        console.write(pLabel[lOpNo]);
        console.write("             ");
        console.write(pLabel[rOpNo]);
        console.write("\n");
        const laLine = aLine[lOpNo].map((k) => k === goita.Koma.empty ? empty : k.Text);
        const lbLine = bLine[lOpNo].map((k) => k === goita.Koma.empty ? empty : k.Text);
        const raLine = aLine[rOpNo].map((k) => k === goita.Koma.empty ? empty : k.Text);
        const rbLine = bLine[rOpNo].map((k) => k === goita.Koma.empty ? empty : k.Text);

        for (let i = 0; i < 4; i++) {
            let s = "";
            s += laLine[i];
            s += lbLine[i];
            s += "            ";
            s += rbLine[3 - i];
            s += raLine[3 - i];
            console.write(clc.cyan(s));
            console.write("\n");
        }

        console.write("    ");
        console.write(pLabel[player.no]);
        for (const b of bLine[player.no]) {
            console.write(clc.cyan(b === goita.Koma.empty ? empty : b.Text));
        }
        console.write("\n");
        console.write("       ");
        for (const a of aLine[player.no]) {
            console.write(clc.cyan(a === goita.Koma.empty ? empty : a.Text));
        }
        console.write("\n");

        console.write("------------------------\n");
    }