import get from "lodash.get";
export const findLastEducation = (
  searchTerm: string,
  userEducation: any[],
  keys?: string
) => {
  if (!Array.isArray(userEducation) || userEducation.length === 0) {
    return null; // Jika array kosong, kembalikan null
  }
  const educationMapping: Record<string, string[]> = {
    SD: ["8 - Elementary School", "SD"],
    "SD 小学": ["8 - Elementary School", "SD"],
    SLTP: ["10 - Junior High School", "SMP"],
    "SLTP 中学": ["10 - Junior High School", "SMP"],
    SLTA: ["9 - Senior High School", "SMA"],
    "SLTA 高学": ["9 - Senior High School", "SMA"],
    "D 1": ["4 - Diploma 1", "D1"],
    "D 2": ["5 - Diploma 2", "D2"],
    "D 3": ["6 - Diploma 3", "D3"],
    "D 1/2/3": [
      "4 - Diploma 1",
      "5 - Diploma 2",
      "6 - Diploma 3",
      "D1",
      "D2",
      "D3",
    ],
    S1: ["3 - Bachelor", "7 - Diploma 4", "S1", "D4"],
    S2: ["2 - Master Degree", "S2"],
    "S2 研究": ["2 - Master Degree", "S2"],
    S3: ["1 - Doctoral / Professor", "S3"],
  };

  const mappedValue = educationMapping[searchTerm];
  if (!mappedValue) return null;

  let filteredEducations;

  if (Array.isArray(mappedValue)) {
    // Jika "D 1/2/3" atau "S1" (D4)
    filteredEducations = userEducation.filter((edu) =>
      mappedValue.includes(edu.education_level)
    );
    if (filteredEducations.length === 0) return null;

    // Pilih jenjang tertinggi, jika sama maka pilih graduate_year terbaru
    const result = filteredEducations.reduce((highest, current) => {
      const highestIndex = mappedValue.indexOf(highest.education_level);
      const currentIndex = mappedValue.indexOf(current.education_level);

      if (currentIndex > highestIndex) {
        return current;
      }
      if (currentIndex === highestIndex) {
        return current.graduate_year > highest.graduate_year
          ? current
          : highest;
      }
      return highest;
    });

    return keys ? get(result, keys) : result;
  } else {
    // Jika hanya satu jenjang (misalnya SD, SLTP, SLTA, S2, S3)
    filteredEducations = userEducation.filter(
      (edu) => edu.education_level === mappedValue
    );
    if (filteredEducations.length === 0) return null;

    // Pilih graduate_year terbaru
    const result = filteredEducations.reduce((latest, current) =>
      current.graduate_year > latest.graduate_year ? current : latest
    );

    return keys ? get(result, keys) : result;
  }
};