"""Tests for the audit-walk ZIP-builder."""

import io
import json
import zipfile
from unittest.mock import patch, MagicMock

from compliance.services.audit_walk_zip_builder import (
    _readme,
    build_audit_walk_zip,
)


_FAKE_WALK = {
    "walk_id": "abc123def456",
    "url": "https://example.com/",
    "started_at": "2026-06-07T10:00:00+00:00",
    "completed_at": "2026-06-07T10:00:30+00:00",
    "video": {
        "filename": "video.webm",
        "size_bytes": 12345,
        "sha256": "a" * 64,
        "dsms": {"cid": "QmFakeCidVideo"},
    },
    "walk_json_dsms": {"cid": "QmFakeCidMeta"},
    "actions": [
        {"action": "navigate", "url": "https://example.com/dse"},
        {"action": "navigate", "url": "https://example.com/imprint"},
        {"action": "expand_accordions", "expanded": 3},
    ],
}


class TestReadme:
    def test_contains_walk_id_and_url(self):
        r = _readme(_FAKE_WALK)
        assert "abc123def456" in r
        assert "https://example.com/" in r

    def test_contains_dsms_cids(self):
        r = _readme(_FAKE_WALK)
        assert "QmFakeCidVideo" in r
        assert "QmFakeCidMeta" in r

    def test_counts_navigates_and_accordions(self):
        r = _readme(_FAKE_WALK)
        assert "2 Compliance-Seiten" in r
        assert "3 Akkordeon" in r


class TestBuildZip:
    def test_empty_walk_returns_empty(self):
        assert build_audit_walk_zip({}) == b""

    def test_zip_contains_three_entries(self):
        # Mock the video fetch to return tiny content
        with patch(
            "compliance.services.audit_walk_zip_builder.httpx.Client"
        ) as mock_client:
            instance = mock_client.return_value.__enter__.return_value
            instance.get.return_value = MagicMock(
                status_code=200, content=b"fakevideo",
            )
            zip_bytes = build_audit_walk_zip(_FAKE_WALK)
        assert zip_bytes
        with zipfile.ZipFile(io.BytesIO(zip_bytes)) as z:
            names = set(z.namelist())
            assert {"video.webm", "walk.json", "README.txt"}.issubset(names)
            walk_content = json.loads(z.read("walk.json"))
            assert walk_content["walk_id"] == "abc123def456"
            assert z.read("video.webm") == b"fakevideo"

    def test_video_fetch_failure_still_produces_zip(self):
        # consent-tester down → no video, but ZIP still contains
        # walk.json + README so the recipient has the metadata.
        with patch(
            "compliance.services.audit_walk_zip_builder.httpx.Client"
        ) as mock_client:
            instance = mock_client.return_value.__enter__.return_value
            instance.get.side_effect = Exception("network down")
            zip_bytes = build_audit_walk_zip(_FAKE_WALK)
        assert zip_bytes
        with zipfile.ZipFile(io.BytesIO(zip_bytes)) as z:
            names = z.namelist()
            assert "video.webm" not in names
            assert "walk.json" in names
            assert "README.txt" in names