from typing import Any, Dict


def parse_bibtex_entry_to_mendeley(entry: Dict[str, str]) -> Dict[str, Any]:
    """
    Helper function untuk mengubah satu entry bibtexparser menjadi format JSON Mendeley.
    """

    authors_list = []
    if "author" in entry:
        authors = entry["author"].split(" and ")
        for name_str in authors:
            if "," in name_str:
                # Format: "Last, First"
                parts = name_str.split(",", 1)
                last_name = parts[0].strip()
                first_name = parts[1].strip()
            else:
                # Format: "First Last"
                parts = name_str.split()
                last_name = parts[-1]
                first_name = " ".join(parts[:-1])
            authors_list.append({"first_name": first_name, "last_name": last_name})

    # 2. Mapping Tipe Dokumen
    # Ini bisa diperluas sesuai kebutuhan
    type_map = {
        "article": "journal",
        "book": "book",
        "incollection": "book_section",
        "inbook": "book_section",
        "inproceedings": "conference_proceedings",
        "conference": "conference_proceedings",
        "phdthesis": "thesis",
        "mastersthesis": "thesis",
    }
    mendeley_type = type_map.get(entry.get("ENTRYTYPE", "generic").lower(), "generic")

    # 3. Identifiers
    identifiers = {}
    if entry.get("doi"):
        identifiers["doi"] = entry["doi"]
    if entry.get("issn"):
        identifiers["issn"] = entry["issn"]
    if entry.get("isbn"):
        identifiers["isbn"] = entry["isbn"]
        
    # 4. Merakit Payload Dokumen
    doc = {
        "type": mendeley_type,
        "title": entry.get("title"),
        "authors": authors_list if authors_list else None, # Kirim list jika ada
        "year": entry.get("year"),
        "source": entry.get("journal") or entry.get("booktitle"), # 'source' di Mendeley
        "volume": entry.get("volume"),
        "issue": entry.get("issue"),
        "pages": entry.get("pages"),
        "identifiers": identifiers if identifiers else None, # Kirim dict jika ada
    }

    # 5. Membersihkan field yang nilainya None agar tidak dikirim
    return {k: v for k, v in doc.items() if v is not None}