"""
Tests for core/processor.py - archive extraction and line-by-line search.

No Telegram deps, no async. Tests create real archive fixtures in tmp_path
so process_file's cleanup guarantee can be verified against actual disk state.
"""

import zipfile
import pytest
from pathlib import Path

from core.processor import compile_patterns, search_file, process_file


@pytest.fixture
def patterns():
    return compile_patterns([r"testcorp\.com"])


# ─── compile_patterns ─────────────────────────────────────────────────────────

class TestCompilePatterns:
    def test_returns_case_insensitive_patterns(self):
        pats = compile_patterns([r"hello"])
        assert pats[0].search("HELLO") is not None
        assert pats[0].search("Hello") is not None

    def test_multiple_patterns(self):
        pats = compile_patterns([r"alpha", r"beta"])
        assert len(pats) == 2
        assert pats[0].search("alpha_line")
        assert pats[1].search("beta_line")

    def test_empty_list(self):
        assert compile_patterns([]) == []


# ─── search_file ──────────────────────────────────────────────────────────────

class TestSearchFile:
    def test_returns_matching_lines(self, tmp_path, patterns):
        f = tmp_path / "combo.txt"
        f.write_text("testcorp.com|user|pass\nothersite.com|user|pass\n")
        assert search_file(f, patterns) == ["testcorp.com|user|pass"]

    def test_returns_empty_when_no_match(self, tmp_path, patterns):
        f = tmp_path / "combo.txt"
        f.write_text("nomatch.com|user|pass\nanother.net|x|y\n")
        assert search_file(f, patterns) == []

    def test_strips_whitespace_from_returned_lines(self, tmp_path, patterns):
        f = tmp_path / "combo.txt"
        f.write_text("  testcorp.com|user|pass  \n")
        hits = search_file(f, patterns)
        assert hits[0] == "testcorp.com|user|pass"

    def test_skips_blank_lines(self, tmp_path, patterns):
        f = tmp_path / "combo.txt"
        f.write_text("\n\ntestcorp.com|user|pass\n\n")
        assert search_file(f, patterns) == ["testcorp.com|user|pass"]

    def test_handles_encoding_errors_gracefully(self, tmp_path, patterns):
        """Combo files are often messy - invalid bytes must not crash the search."""
        f = tmp_path / "combo.txt"
        f.write_bytes(
            b"testcorp.com|user1|pass\n"
            b"\xff\xfe invalid bytes here\n"
            b"testcorp.com|user2|pass\n"
        )
        hits = search_file(f, patterns)
        assert len(hits) == 2

    def test_multiple_matching_lines_all_returned(self, tmp_path, patterns):
        f = tmp_path / "combo.txt"
        f.write_text(
            "testcorp.com|alice|pass1\n"
            "nomatch.com|bob|pass2\n"
            "testcorp.com|carol|pass3\n"
        )
        hits = search_file(f, patterns)
        assert len(hits) == 2


# ─── process_file - plain .txt ────────────────────────────────────────────────

class TestProcessFilePlainText:
    def test_returns_hits(self, tmp_path, patterns):
        f = tmp_path / "combo.txt"
        f.write_text("testcorp.com|user|pass\nnomatch.com|x|y\n")
        hits = process_file(f, patterns)
        assert hits == ["testcorp.com|user|pass"]

    def test_deletes_file_after_processing(self, tmp_path, patterns):
        f = tmp_path / "combo.txt"
        f.write_text("testcorp.com|user|pass\n")
        process_file(f, patterns)
        assert not f.exists()

    def test_deletes_file_even_with_no_hits(self, tmp_path, patterns):
        f = tmp_path / "combo.txt"
        f.write_text("nomatch.com|x|y\n")
        hits = process_file(f, patterns)
        assert hits == []
        assert not f.exists()


# ─── process_file - .zip extraction ──────────────────────────────────────────

class TestProcessFileZip:
    def _make_zip(self, tmp_path: Path, content: str, filename="content.txt") -> Path:
        txt = tmp_path / filename
        txt.write_text(content)
        zf = tmp_path / "combo.zip"
        with zipfile.ZipFile(zf, "w") as z:
            z.write(txt, filename)
        txt.unlink()
        return zf

    def test_extracts_and_returns_hits(self, tmp_path, patterns):
        zf = self._make_zip(tmp_path, "testcorp.com|user|pass\nnomatch.com|x|y\n")
        hits = process_file(zf, patterns)
        assert hits == ["testcorp.com|user|pass"]

    def test_deletes_zip_after_processing(self, tmp_path, patterns):
        zf = self._make_zip(tmp_path, "testcorp.com|user|pass\n")
        process_file(zf, patterns)
        assert not zf.exists()

    def test_deletes_extract_dir_after_processing(self, tmp_path, patterns):
        zf = self._make_zip(tmp_path, "testcorp.com|user|pass\n")
        extract_dir = tmp_path / "combo"  # sibling dir named after zip stem
        process_file(zf, patterns)
        assert not extract_dir.exists()

    def test_no_hits_still_cleans_up(self, tmp_path, patterns):
        zf = self._make_zip(tmp_path, "nomatch.com|x|y\n")
        extract_dir = tmp_path / "combo"
        process_file(zf, patterns)
        assert not zf.exists()
        assert not extract_dir.exists()

    def test_zip_with_multiple_txt_files(self, tmp_path, patterns):
        txt1 = tmp_path / "a.txt"
        txt1.write_text("testcorp.com|alice|pass\n")
        txt2 = tmp_path / "b.txt"
        txt2.write_text("testcorp.com|bob|pass\n")
        zf = tmp_path / "combo.zip"
        with zipfile.ZipFile(zf, "w") as z:
            z.write(txt1, "a.txt")
            z.write(txt2, "b.txt")
        txt1.unlink()
        txt2.unlink()

        hits = process_file(zf, patterns)
        assert len(hits) == 2


# ─── process_file - nested archives ──────────────────────────────────────────

class TestProcessFileNested:
    def test_nested_zip_is_recursed(self, tmp_path, patterns):
        inner_txt = tmp_path / "inner.txt"
        inner_txt.write_text("testcorp.com|user|pass\n")
        inner_zip = tmp_path / "inner.zip"
        with zipfile.ZipFile(inner_zip, "w") as z:
            z.write(inner_txt, "inner.txt")
        inner_txt.unlink()

        outer_zip = tmp_path / "outer.zip"
        with zipfile.ZipFile(outer_zip, "w") as z:
            z.write(inner_zip, "inner.zip")
        inner_zip.unlink()

        hits = process_file(outer_zip, patterns)
        assert hits == ["testcorp.com|user|pass"]
        assert not outer_zip.exists()
        assert not (tmp_path / "outer").exists()


# ─── process_file - password-protected .7z ───────────────────────────────────

class TestProcessFile7zPassword:
    def test_unlocks_with_correct_password(self, tmp_path, patterns, monkeypatch):
        try:
            import py7zr
        except ImportError:
            pytest.skip("py7zr not installed")

        import core.processor as proc_module

        # Isolate to a single known password so the test doesn't depend on config
        monkeypatch.setattr(proc_module, "ARCHIVE_PASSWORDS", [b"secretpwd"])

        txt = tmp_path / "content.txt"
        txt.write_text("testcorp.com|user|pass\n")
        szf = tmp_path / "combo.7z"
        with py7zr.SevenZipFile(szf, "w", password="secretpwd") as z:
            z.write(txt, "content.txt")
        txt.unlink()

        hits = process_file(szf, patterns)
        assert hits == ["testcorp.com|user|pass"]
        assert not szf.exists()

    def test_skips_when_no_password_matches(self, tmp_path, patterns, monkeypatch):
        try:
            import py7zr
        except ImportError:
            pytest.skip("py7zr not installed")

        import core.processor as proc_module
        monkeypatch.setattr(proc_module, "ARCHIVE_PASSWORDS", [b"wrongpwd"])

        txt = tmp_path / "content.txt"
        txt.write_text("testcorp.com|user|pass\n")
        szf = tmp_path / "combo.7z"
        with py7zr.SevenZipFile(szf, "w", password="correctpwd") as z:
            z.write(txt, "content.txt")
        txt.unlink()

        # No hits - archive could not be opened
        hits = process_file(szf, patterns)
        assert hits == []