from __future__ import annotations

import tempfile
from pathlib import Path

from bot_descarga.config.settings import Settings
from bot_descarga.infrastructure.file_manager import FileManager
from bot_descarga.infrastructure.pdf_validator import PdfValidator


class AlwaysValid:
    def validate(self, ruta: str):
        return True, "OK"


class AlwaysInvalid:
    def validate(self, ruta: str):
        return False, "corrupto"


def test_ruta_final_crea_carpeta_nit():
    with tempfile.TemporaryDirectory() as tmp:
        fm = FileManager(tmp, AlwaysValid())
        ruta = fm.ruta_final("900111", "12345")
        assert Path(ruta).parent.exists()
        assert Path(ruta).name == "12345.pdf"
        assert "900111" in ruta


def test_exists_valid_cuando_no_existe():
    with tempfile.TemporaryDirectory() as tmp:
        fm = FileManager(tmp, AlwaysValid())
        ok, ruta, motivo = fm.exists_valid("900", "1")
        assert ok is False
        assert motivo == "no existe"
        assert ruta.endswith("1.pdf")


def test_exists_valid_cuando_valido():
    with tempfile.TemporaryDirectory() as tmp:
        fm = FileManager(tmp, AlwaysValid())
        ruta = fm.ruta_final("900", "1")
        Path(ruta).write_bytes(b"%PDF-dummy")
        ok, _, motivo = fm.exists_valid("900", "1")
        assert ok is True
        assert motivo == "OK"
        assert Path(ruta).exists()


def test_exists_valid_elimina_corrupto():
    with tempfile.TemporaryDirectory() as tmp:
        fm = FileManager(tmp, AlwaysInvalid())
        ruta = fm.ruta_final("900", "1")
        Path(ruta).write_bytes(b"basura")
        ok, _, motivo = fm.exists_valid("900", "1")
        assert ok is False
        assert motivo == "corrupto"
        assert not Path(ruta).exists()


def test_move_to_final():
    with tempfile.TemporaryDirectory() as tmp:
        fm = FileManager(tmp, PdfValidator(Settings(peso_minimo_bytes=1)))
        src = Path(tmp) / "temp.pdf"
        src.write_bytes(b"%PDF-1.4")
        dest = fm.ruta_final("NIT1", "R1")
        fm.move_to_final(str(src), dest)
        assert Path(dest).exists()
        assert not src.exists()