"""Tests for the artifacts package."""

from __future__ import annotations

from artifacts import hash_bytes, next_version, render_cover_letter, render_cv_pdf


SAMPLE_PROFILE = {
    "full_name": "Joakim Morling",
    "headline": "Full-stack Engineer & Architect",
    "email": "jcamorling@gmail.com",
    "phone": "+46 76 006 7335",
    "location": "Malmo, Sweden",
    "summary": (
        "Full-stack engineer with a passion for building robust systems. "
        "Experienced in government platforms and embedded ML. "
        "Swedish characters: å ä ö Å Ä Ö are important."
    ),
}

SAMPLE_SECTIONS = [
    {
        "kind": "experience",
        "title": "Co-founder & Partner",
        "org": "Pro Firmitas ApS",
        "location": "Copenhagen, DK",
        "start_date": "2026-02",
        "end_date": None,
        "bullets": [
            "Co-founded a consulting company building AI-enhanced software",
            "Responsible for technical architecture and client delivery",
        ],
    },
    {
        "kind": "education",
        "title": "M.Sc. Computer Science & Engineering",
        "org": "Lund University (LTH)",
        "location": "Lund, SE",
        "start_date": "2018",
        "end_date": "2023",
        "bullets": [
            "Master Thesis: optimized DBSCAN clustering for radar processing",
        ],
    },
]

SWEDISH_PROFILE = {
    "full_name": "Åke Öberg",
    "headline": "Mjukvaruingenjör - Full Stack",
    "email": "ake.oberg@example.se",
    "phone": "+46 70 123 4567",
    "location": "Malmö, Sverige",
    "summary": "Erfaren utvecklare med fokus på å ä ö Å Ä Ö i alla texter.",
}

SWEDISH_SECTIONS = [
    {
        "kind": "experience",
        "title": "Senior Utvecklare",
        "org": "Företag AB",
        "location": "Göteborg",
        "start_date": "2020",
        "end_date": None,
        "bullets": [
            "Byggde system med ångervektor och översättningsmotor",
            "Ansvarig för säkerhetsgranskning av ärendehantering",
        ],
    },
]


class TestRenderCvPdf:
    def test_returns_valid_pdf_bytes(self) -> None:
        result = render_cv_pdf(SAMPLE_PROFILE, SAMPLE_SECTIONS)
        assert isinstance(result, (bytes, bytearray))
        assert bytes(result).startswith(b"%PDF")

    def test_swedish_characters_render(self) -> None:
        """Swedish characters must not raise an encoding error."""
        result = render_cv_pdf(SWEDISH_PROFILE, SWEDISH_SECTIONS)
        assert bytes(result).startswith(b"%PDF")

    def test_content_hash_stable(self) -> None:
        """Same input should produce the same content hash."""
        result_a = render_cv_pdf(SAMPLE_PROFILE, SAMPLE_SECTIONS)
        result_b = render_cv_pdf(SAMPLE_PROFILE, SAMPLE_SECTIONS)
        assert hash_bytes(bytes(result_a)) == hash_bytes(bytes(result_b))

    def test_different_input_different_hash(self) -> None:
        result_a = render_cv_pdf(SAMPLE_PROFILE, SAMPLE_SECTIONS)
        result_b = render_cv_pdf(SWEDISH_PROFILE, SWEDISH_SECTIONS)
        assert hash_bytes(bytes(result_a)) != hash_bytes(bytes(result_b))

    def test_empty_sections(self) -> None:
        result = render_cv_pdf(SAMPLE_PROFILE, [])
        assert bytes(result).startswith(b"%PDF")

    def test_minimal_profile(self) -> None:
        result = render_cv_pdf({"full_name": "Test Person"}, [])
        assert bytes(result).startswith(b"%PDF")


class TestRenderCoverLetter:
    def test_returns_valid_pdf_bytes(self) -> None:
        result = render_cover_letter("Dear Hiring Manager,\n\nI am applying...", SAMPLE_PROFILE)
        assert bytes(result).startswith(b"%PDF")

    def test_swedish_text(self) -> None:
        text = "Hej! Jag söker jobbet. Mvh Åke Öberg."
        result = render_cover_letter(text, SWEDISH_PROFILE)
        assert bytes(result).startswith(b"%PDF")

    def test_content_hash_stable(self) -> None:
        text = "Cover letter body text."
        result_a = render_cover_letter(text, SAMPLE_PROFILE)
        result_b = render_cover_letter(text, SAMPLE_PROFILE)
        assert hash_bytes(bytes(result_a)) == hash_bytes(bytes(result_b))


class TestHashBytes:
    def test_known_value(self) -> None:
        assert hash_bytes(b"hello") == (
            "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824"
        )

    def test_empty_bytes(self) -> None:
        assert hash_bytes(b"") == (
            "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
        )

    def test_different_input_different_hash(self) -> None:
        assert hash_bytes(b"a") != hash_bytes(b"b")


class TestNextVersion:
    def test_empty_list(self) -> None:
        assert next_version([]) == 1

    def test_sequential(self) -> None:
        assert next_version([1, 2, 3]) == 4

    def test_gaps(self) -> None:
        assert next_version([1, 3]) == 4

    def test_single(self) -> None:
        assert next_version([5]) == 6