export function printArray<T>(
  header: string,
  list: T[],
  formatter?: (element: T) => string,
): string {
  function getDefaultFormatter() {
    let count = 0;
    return (t: T): string => `[${count++}] => ${t}`;
  }

  formatter = formatter || getDefaultFormatter();
  let text = "";
  if (header) {
    text = header + "\n\n\n";
  }
  for (let t of list) {
    text += formatter(t) + "\n";
  }
  return text;
}

export function printJson(data: any) {
  return JSON.stringify(data, null, "  ");
}

const EMPTY_ENTRY = {};
export const EMPTY = [EMPTY_ENTRY];

export function printCombinations<T1, T2, T3, T4, T5, T6, T7, T8, T9>(
  func: (
    t1: T1,
    t2: T2,
    t3: T3,
    t4: T4,
    t5: T5,
    t6: T6,
    t7: T7,
    t8: T8,
    t9: T9,
  ) => any,
  params1: T1[],
  params2: T2[],
  params3: T3[],
  params4: T4[],
  params5: T5[],
  params6: T6[],
  params7: T7[],
  params8: T8[],
  params9: T9[],
): string {
  let text = "";
  for (let p1 of params1) {
    for (let p2 of params2) {
      for (let p3 of params3) {
        for (let p4 of params4) {
          for (let p5 of params5) {
            for (let p6 of params6) {
              for (let p7 of params7) {
                for (let p8 of params8) {
                  for (let p9 of params9) {
                    let output;
                    try {
                      output = func(p1, p2, p3, p4, p5, p6, p7, p8, p9);
                    } catch (e) {
                      output = `${e}`;
                    }
                    const parameters = [
                      p1,
                      p2,
                      p3,
                      p4,
                      p5,
                      p6,
                      p7,
                      p8,
                      p9,
                    ].filter((p) => p !== EMPTY_ENTRY);

                    text += `[${parameters}] => ${output}\n`;
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  return text;
}