import hashlib
import subprocess
import threading
import unicodedata

import pytest
from pydantic import ValidationError

from tht.evidence import (
    CuratedEvidence,
    EvidenceManifest,
    EvidencePreparationError,
    EvidenceRestructurer,
    RestructureCandidate,
    dump_curated_markdown,
    dump_manifest,
    load_curated_tree,
    load_manifest,
    migrate_workspace_evidence,
    prepare_workspace_evidence,
    validate_workspace_evidence,
)


def _evidence(source_text: str, *, review_items=()):
    normalized_source = unicodedata.normalize(
        "NFC", source_text.replace("\r\n", "\n").replace("\r", "\n"),
    )
    if not normalized_source.endswith("\n"):
        normalized_source += "\n"
    return CuratedEvidence.model_validate({
        "schema_version": 1,
        "id": "evidence:fascia-pediatrica",
        "title": "Fascia pediatrica",
        "kind": "domain",
        "purposes": ["disambiguation"],
        "applies_to": {"concepts": ["fascia pediatrica"]},
        "language": "it",
        "provenance": {
            "source_file": "source/domain/patient.md",
            "source_sha256": "sha256:" + hashlib.sha256(normalized_source.encode()).hexdigest(),
            "supporting_excerpts": ["I pazienti sotto i 18 anni sono pediatrici."],
        },
        "review_items": list(review_items),
        "payload": {"rule": "La fascia pediatrica comprende i minori."},
    })


def _write_workspace(root, evidence, source_text):
    evidence_root = root / "evidence"
    source_path = evidence_root / "source" / "domain" / "patient.md"
    curated_path = evidence_root / "curated" / "domain" / "fascia-pediatrica.md"
    source_path.parent.mkdir(parents=True)
    curated_path.parent.mkdir(parents=True)
    source_path.write_text(source_text, encoding="utf-8")
    curated_path.write_text(dump_curated_markdown(evidence), encoding="utf-8")
    (evidence_root / "manifest.yaml").write_text(dump_manifest(EvidenceManifest.model_validate({
        "schema_version": 1,
        "pipeline_version": "evidence-authoring-v1",
        "sources": {
            evidence.provenance.source_file: {
                "sha256": evidence.provenance.source_sha256,
                "units": [evidence.id],
            },
        },
        "orphans": [],
    })), encoding="utf-8")


def test_workspace_validation_allows_a_coherent_curated_unit(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)

    report = validate_workspace_evidence(tmp_path)

    assert report.publishable is True
    assert report.findings == ()


def test_workspace_validation_keeps_review_items_visible_and_blocks_publication(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text, review_items=[{
        "code": "ambiguous_source_statement",
        "message": "Il sorgente non chiarisce la data di riferimento.",
        "field": "payload.rule",
    }]), source_text)

    report = validate_workspace_evidence(tmp_path)

    assert report.publishable is False
    assert [finding.code for finding in report.findings] == ["unresolved_review_item"]


def test_manifest_round_trip_is_versioned_and_deterministic(tmp_path):
    manifest = EvidenceManifest.model_validate({
        "schema_version": 1,
        "pipeline_version": "evidence-authoring-v1",
        "sources": {
            "source/domain/patient.md": {
                "sha256": "sha256:" + "a" * 64,
                "units": ["evidence:fascia-pediatrica"],
            },
        },
        "orphans": [],
    })
    path = tmp_path / "evidence" / "manifest.yaml"
    path.parent.mkdir(parents=True)
    path.write_text(dump_manifest(manifest), encoding="utf-8")

    loaded = load_manifest(path)

    assert loaded == manifest
    assert path.read_text(encoding="utf-8") == dump_manifest(manifest)


def test_manifest_rejects_unknown_fields_and_incompatible_pipeline_version():
    with pytest.raises(ValidationError):
        EvidenceManifest.model_validate({
            "schema_version": 1,
            "pipeline_version": "evidence-authoring-v2",
            "sources": {},
            "orphans": [],
            "approved": True,
        })


def test_workspace_validation_requires_a_manifest(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    (tmp_path / "evidence" / "manifest.yaml").unlink()

    report = validate_workspace_evidence(tmp_path)

    assert report.publishable is False
    assert [finding.code for finding in report.findings] == ["manifest_missing"]


def test_workspace_validation_reports_a_non_utf8_manifest_without_raising(tmp_path):
    evidence_root = tmp_path / "evidence"
    evidence_root.mkdir()
    (evidence_root / "manifest.yaml").write_bytes(b"\xff")

    report = validate_workspace_evidence(tmp_path)

    assert report.publishable is False
    assert [finding.code for finding in report.findings] == ["manifest_invalid"]


def test_workspace_validation_reports_invalid_curated_documents_without_raising(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    (tmp_path / "evidence" / "curated" / "domain" / "fascia-pediatrica.md").write_text(
        "not canonical frontmatter", encoding="utf-8",
    )

    report = validate_workspace_evidence(tmp_path)

    assert report.publishable is False
    assert [finding.code for finding in report.findings] == ["curated_invalid"]


def test_workspace_validation_preserves_manifest_orphans_but_blocks_publication(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    manifest_path = tmp_path / "evidence" / "manifest.yaml"
    manifest = load_manifest(manifest_path).model_copy(update={"orphans": ("evidence:retired",)})
    manifest_path.write_text(dump_manifest(manifest), encoding="utf-8")

    report = validate_workspace_evidence(tmp_path)

    assert report.publishable is False
    assert [finding.code for finding in report.findings] == ["orphaned_unit"]


def test_workspace_validation_requires_manifest_and_provenance_to_agree(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    evidence = _evidence(source_text)
    _write_workspace(tmp_path, evidence, source_text)
    manifest_path = tmp_path / "evidence" / "manifest.yaml"
    manifest = EvidenceManifest.model_validate({
        "schema_version": 1,
        "pipeline_version": "evidence-authoring-v1",
        "sources": {
            evidence.provenance.source_file: {
                "sha256": "sha256:" + "b" * 64,
                "units": ["evidence:another-unit"],
            },
        },
        "orphans": [],
    })
    manifest_path.write_text(dump_manifest(manifest), encoding="utf-8")

    report = validate_workspace_evidence(tmp_path)

    assert report.publishable is False
    assert {finding.code for finding in report.findings} == {
        "manifest_source_hash_mismatch",
        "manifest_unit_missing",
        "source_hash_mismatch",
        "manifest_unit_without_curated",
    }


def test_workspace_validation_checks_unreferenced_manifest_sources_and_units(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    manifest_path = tmp_path / "evidence" / "manifest.yaml"
    manifest = EvidenceManifest.model_validate({
        "schema_version": 1,
        "pipeline_version": "evidence-authoring-v1",
        "sources": {
            "source/domain/missing.md": {
                "sha256": "sha256:" + "a" * 64,
                "units": ["evidence:removed"],
            },
        },
        "orphans": [],
    })
    manifest_path.write_text(dump_manifest(manifest), encoding="utf-8")

    report = validate_workspace_evidence(tmp_path)

    assert report.publishable is False
    assert {finding.code for finding in report.findings} == {
        "manifest_source_missing",
        "source_missing",
        "manifest_unit_without_curated",
    }


def test_manifest_rejects_unsafe_source_paths_and_legacy_unit_identifiers():
    with pytest.raises(ValidationError):
        EvidenceManifest.model_validate({
            "schema_version": 1,
            "pipeline_version": "evidence-authoring-v1",
            "sources": {"../patient.pdf": {"sha256": "sha256:" + "a" * 64, "units": ["domain:patient"]}},
            "orphans": [],
        })


def test_manifest_rejects_a_unit_declared_by_two_sources():
    with pytest.raises(ValidationError, match="only one source"):
        EvidenceManifest.model_validate({
            "schema_version": 1,
            "pipeline_version": "evidence-authoring-v1",
            "sources": {
                "source/domain/one.md": {
                    "sha256": "sha256:" + "a" * 64,
                    "units": ["evidence:shared"],
                },
                "source/domain/two.md": {
                    "sha256": "sha256:" + "b" * 64,
                    "units": ["evidence:shared"],
                },
            },
            "orphans": [],
        })


def test_workspace_validation_rejects_duplicate_curated_ids_and_changed_sources(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    evidence = _evidence(source_text)
    _write_workspace(tmp_path, evidence, source_text)
    duplicate_path = tmp_path / "evidence" / "curated" / "domain" / "duplicate.md"
    duplicate_path.write_text(dump_curated_markdown(evidence), encoding="utf-8")
    (tmp_path / "evidence" / "source" / "domain" / "patient.md").write_text(
        "Il testo sorgente è cambiato.", encoding="utf-8",
    )

    report = validate_workspace_evidence(tmp_path)

    assert report.publishable is False
    assert {finding.code for finding in report.findings} == {
        "duplicate_evidence_id",
        "source_hash_mismatch",
        "supporting_excerpt_missing",
    }


def test_workspace_validation_reports_unreadable_or_oversized_sources(tmp_path, monkeypatch):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    source_path = tmp_path / "evidence" / "source" / "domain" / "patient.md"
    source_path.write_bytes(b"\xff")

    unreadable = validate_workspace_evidence(tmp_path)

    assert [finding.code for finding in unreadable.findings] == ["source_unreadable"]

    source_path.write_text(source_text, encoding="utf-8")
    monkeypatch.setattr("tht.evidence.authoring.MAX_AUTHORING_FILE_BYTES", 1)

    oversized = validate_workspace_evidence(tmp_path)

    assert [finding.code for finding in oversized.findings] == ["source_oversized"]


def test_workspace_validation_rejects_a_source_symlink(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    source_path = tmp_path / "evidence" / "source" / "domain" / "patient.md"
    outside = tmp_path / "outside.md"
    outside.write_text(source_text, encoding="utf-8")
    source_path.unlink()
    source_path.symlink_to(outside)

    report = validate_workspace_evidence(tmp_path)

    assert [finding.code for finding in report.findings] == ["source_unsafe"]


class _Restructurer(EvidenceRestructurer):
    def __init__(self, candidates):
        self.candidates = candidates
        self.requests = []

    def restructure(self, request):
        self.requests.append(request)
        return tuple(self.candidates)


def _candidate(*, title="Fascia pediatrica", existing_id=None, kind="domain", payload=None):
    return RestructureCandidate.model_validate({
        "schema_version": 1,
        "existing_id": existing_id,
        "title": title,
        "kind": kind,
        "purposes": ["disambiguation"],
        "applies_to": {"concepts": ["fascia pediatrica"]},
        "language": "it",
        "supporting_excerpts": ["I pazienti sotto i 18 anni sono pediatrici."],
        "review_items": [],
        "payload": payload or {"rule": "La fascia pediatrica comprende i minori."},
    })


def test_prepare_changed_source_uses_one_model_call_and_applies_a_valid_batch(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    source_path = tmp_path / "evidence" / "source" / "domain" / "patient.md"
    source_path.write_text(source_text + " La regola è revisionata.\n", encoding="utf-8")
    restructurer = _Restructurer([_candidate(existing_id="evidence:fascia-pediatrica")])

    report = prepare_workspace_evidence(tmp_path, restructurer=restructurer, git_status=lambda _: ())

    assert report.model_calls == 1
    assert report.changed == ("source/domain/patient.md",)
    assert report.created == ()
    assert len(restructurer.requests) == 1
    assert restructurer.requests[0].previous_units[0].id == "evidence:fascia-pediatrica"
    curated_path = tmp_path / "evidence" / "curated" / "domain" / "fascia-pediatrica.md"
    curated = load_curated_tree(tmp_path / "evidence" / "curated")[0]
    assert curated.schema_version == 3
    assert "# Fascia pediatrica\n" in curated_path.read_text(encoding="utf-8")
    assert validate_workspace_evidence(tmp_path).publishable is True


def test_migrate_workspace_evidence_rewrites_v1_units_as_v3_without_a_model_call(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)

    report = migrate_workspace_evidence(tmp_path, git_status=lambda _: ())

    curated_path = tmp_path / "evidence" / "curated" / "domain" / "fascia-pediatrica.md"
    migrated = load_curated_tree(tmp_path / "evidence" / "curated")[0]
    assert report.migrated == ("evidence:fascia-pediatrica",)
    assert report.unchanged == ()
    assert migrated.schema_version == 3
    assert migrated.payload.rule == "La fascia pediatrica comprende i minori."
    assert "## Regola\n\nLa fascia pediatrica comprende i minori." in curated_path.read_text(
        encoding="utf-8",
    )
    assert report.findings == ()


def test_migrate_workspace_evidence_rewrites_v2_units_as_table_free_v3(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    evidence = _evidence(source_text).model_copy(update={"schema_version": 2})
    _write_workspace(tmp_path, evidence, source_text)

    first = migrate_workspace_evidence(tmp_path, git_status=lambda _: ())
    second = migrate_workspace_evidence(tmp_path, git_status=lambda _: ())

    curated_path = tmp_path / "evidence" / "curated" / "domain" / "fascia-pediatrica.md"
    text = curated_path.read_text(encoding="utf-8")
    migrated = load_curated_tree(tmp_path / "evidence" / "curated")[0]
    assert first.migrated == ("evidence:fascia-pediatrica",)
    assert first.unchanged == ()
    assert second.migrated == ()
    assert second.unchanged == ("evidence:fascia-pediatrica",)
    assert migrated.schema_version == 3
    assert text.startswith("<!-- tht:metadata:")
    assert not any(line.startswith("|") for line in text.splitlines())


def test_migrate_workspace_evidence_rejects_dirty_curated_files_in_a_nested_workspace(tmp_path):
    subprocess.run(["git", "init", "--quiet", str(tmp_path)], check=True)
    workspace_root = tmp_path / "psd-clinical"
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(workspace_root, _evidence(source_text), source_text)

    with pytest.raises(EvidencePreparationError, match="authoring_worktree_dirty"):
        migrate_workspace_evidence(workspace_root)


def test_prepare_can_issue_independent_source_calls_concurrently(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    source_root = tmp_path / "evidence" / "source" / "domain"
    changed_text = source_text + "\nRegola revisionata.\n"
    (source_root / "patient.md").write_text(changed_text, encoding="utf-8")
    (source_root / "second.md").write_text(changed_text, encoding="utf-8")
    barrier = threading.Barrier(2)

    class ConcurrentRestructurer:
        def __init__(self):
            self.requests = []

        def restructure(self, request):
            self.requests.append(request)
            barrier.wait(timeout=2)
            return (_candidate(title=f"Unit {request.source_file}"),)

    restructurer = ConcurrentRestructurer()

    report = prepare_workspace_evidence(
        tmp_path,
        restructurer=restructurer,
        git_status=lambda _: (),
        max_workers=2,
    )

    assert report.model_calls == 2
    assert sorted(request.source_file for request in restructurer.requests) == [
        "source/domain/patient.md",
        "source/domain/second.md",
    ]


def test_prepare_unchanged_source_skips_model_and_does_not_write(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    curated_path = tmp_path / "evidence" / "curated" / "domain" / "fascia-pediatrica.md"
    original = curated_path.read_text(encoding="utf-8")
    restructurer = _Restructurer([])

    report = prepare_workspace_evidence(tmp_path, restructurer=restructurer, git_status=lambda _: ())

    assert report.model_calls == 0
    assert report.unchanged == ("source/domain/patient.md",)
    assert curated_path.read_text(encoding="utf-8") == original
    assert restructurer.requests == []


def test_prepare_rejects_dirty_curated_state_before_model_call(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    restructurer = _Restructurer([])

    with pytest.raises(EvidencePreparationError, match="authoring_worktree_dirty"):
        prepare_workspace_evidence(
            tmp_path,
            restructurer=restructurer,
            git_status=lambda _: (" M evidence/curated/domain/patient.md",),
        )

    assert restructurer.requests == []


def test_prepare_refuses_an_incompatible_pipeline_version_without_writing(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    manifest_path = tmp_path / "evidence" / "manifest.yaml"
    curated_path = tmp_path / "evidence" / "curated" / "domain" / "fascia-pediatrica.md"
    manifest_path.write_text(
        manifest_path.read_text(encoding="utf-8").replace("evidence-authoring-v1", "evidence-authoring-v2"),
        encoding="utf-8",
    )
    original_manifest = manifest_path.read_text(encoding="utf-8")
    original_curated = curated_path.read_text(encoding="utf-8")

    with pytest.raises(EvidencePreparationError, match="pipeline_upgrade_required"):
        prepare_workspace_evidence(tmp_path, restructurer=_Restructurer([]), git_status=lambda _: ())

    assert manifest_path.read_text(encoding="utf-8") == original_manifest
    assert curated_path.read_text(encoding="utf-8") == original_curated


def test_prepare_preserves_an_id_when_reclassified_and_allocates_a_new_id_for_a_split(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    source_path = tmp_path / "evidence" / "source" / "domain" / "patient.md"
    source_path.write_text(source_text + " I pazienti sopra i 18 anni sono adulti.\n", encoding="utf-8")
    restructurer = _Restructurer([
        _candidate(
            existing_id="evidence:fascia-pediatrica",
            kind="glossary",
            payload={"definition": "Paziente con meno di 18 anni."},
        ),
        _candidate(title="Fascia adulta"),
    ])

    report = prepare_workspace_evidence(tmp_path, restructurer=restructurer, git_status=lambda _: ())

    assert report.created == ("evidence:fascia-adulta",)
    documents = {document.id: document for document in load_curated_tree(tmp_path / "evidence" / "curated")}
    assert documents["evidence:fascia-pediatrica"].kind == "glossary"
    assert documents["evidence:fascia-adulta"].kind == "domain"


def test_prepare_retains_units_from_a_removed_source_as_blocking_orphans(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    (tmp_path / "evidence" / "source" / "domain" / "patient.md").unlink()
    restructurer = _Restructurer([])

    report = prepare_workspace_evidence(tmp_path, restructurer=restructurer, git_status=lambda _: ())

    assert report.model_calls == 0
    assert report.orphaned == ("evidence:fascia-pediatrica",)
    assert (tmp_path / "evidence" / "curated" / "domain" / "fascia-pediatrica.md").is_file()
    assert [finding.code for finding in report.findings] == ["orphaned_unit"]


def test_prepare_preserves_ids_without_orphans_for_a_unique_source_rename(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    source_root = tmp_path / "evidence" / "source" / "domain"
    (source_root / "patient.md").rename(source_root / "patient-age.md")
    restructurer = _Restructurer([])

    report = prepare_workspace_evidence(tmp_path, restructurer=restructurer, git_status=lambda _: ())

    assert report.model_calls == 0
    assert report.orphaned == ()
    assert report.unchanged == ("source/domain/patient-age.md",)
    assert validate_workspace_evidence(tmp_path).publishable is True


def test_prepare_rejects_an_unknown_existing_id_without_writing_the_batch(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    source_path = tmp_path / "evidence" / "source" / "domain" / "patient.md"
    source_path.write_text(source_text + " Revisione.\n", encoding="utf-8")
    original = (tmp_path / "evidence" / "manifest.yaml").read_text(encoding="utf-8")
    restructurer = _Restructurer([_candidate(existing_id="evidence:not-supplied")])

    with pytest.raises(EvidencePreparationError, match="unknown_existing_id"):
        prepare_workspace_evidence(tmp_path, restructurer=restructurer, git_status=lambda _: ())

    assert (tmp_path / "evidence" / "manifest.yaml").read_text(encoding="utf-8") == original


def test_prepare_marks_an_omitted_prior_unit_for_human_review(tmp_path):
    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    (tmp_path / "evidence" / "source" / "domain" / "patient.md").write_text(
        "La classificazione pediatrica non è documentata.\n", encoding="utf-8",
    )
    restructurer = _Restructurer([])

    report = prepare_workspace_evidence(tmp_path, restructurer=restructurer, git_status=lambda _: ())

    assert report.model_calls == 1
    assert [finding.code for finding in report.findings] == [
        "supporting_excerpt_missing", "unresolved_review_item",
    ]
    retained = load_curated_tree(tmp_path / "evidence" / "curated")[0]
    assert retained.schema_version == 3
    assert retained.review_items[0].code == "source_no_longer_supports_unit"


def test_resolve_retires_an_orphan_and_updates_curated_content_and_manifest_atomically(tmp_path):
    from tht.evidence import resolve_workspace_evidence

    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    source_path = tmp_path / "evidence" / "source" / "domain" / "patient.md"
    source_path.unlink()
    prepare_workspace_evidence(tmp_path, restructurer=_Restructurer([]), git_status=lambda _: ())

    report = resolve_workspace_evidence(
        tmp_path,
        "evidence:fascia-pediatrica",
        retire=True,
        git_status=lambda _: (),
    )

    assert report.action == "retired"
    assert report.evidence_id == "evidence:fascia-pediatrica"
    assert not (tmp_path / "evidence" / "curated" / "domain" / "fascia-pediatrica.md").exists()
    manifest = load_manifest(tmp_path / "evidence" / "manifest.yaml")
    assert manifest.orphans == ()
    assert manifest.sources == {}


def test_resolve_relinks_an_unit_and_updates_its_manifest_membership(tmp_path):
    from tht.evidence import resolve_workspace_evidence

    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    next_source = tmp_path / "evidence" / "source" / "domain" / "patient-age.md"
    next_source.write_text(source_text, encoding="utf-8")

    report = resolve_workspace_evidence(
        tmp_path,
        "evidence:fascia-pediatrica",
        source="source/domain/patient-age.md",
        git_status=lambda _: (),
    )

    assert report.action == "relinked"
    assert report.source_file == "source/domain/patient-age.md"
    document = load_curated_tree(tmp_path / "evidence" / "curated")[0]
    assert document.provenance.source_file == "source/domain/patient-age.md"
    manifest = load_manifest(tmp_path / "evidence" / "manifest.yaml")
    assert manifest.sources["source/domain/patient.md"].units == ()
    assert manifest.sources["source/domain/patient-age.md"].units == ("evidence:fascia-pediatrica",)
    assert validate_workspace_evidence(tmp_path).publishable is True


def test_resolve_relink_clears_an_unsupported_review_item_when_the_new_source_supports_it(tmp_path):
    from tht.evidence import resolve_workspace_evidence

    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    source_path = tmp_path / "evidence" / "source" / "domain" / "patient.md"
    source_path.write_text("La classificazione pediatrica non è documentata.\n", encoding="utf-8")
    prepare_workspace_evidence(tmp_path, restructurer=_Restructurer([]), git_status=lambda _: ())
    replacement_source = tmp_path / "evidence" / "source" / "domain" / "patient-revised.md"
    replacement_source.write_text(source_text, encoding="utf-8")

    report = resolve_workspace_evidence(
        tmp_path,
        "evidence:fascia-pediatrica",
        source="source/domain/patient-revised.md",
        git_status=lambda _: (),
    )

    assert report.findings == ()
    document = load_curated_tree(tmp_path / "evidence" / "curated")[0]
    assert all(item.code != "source_no_longer_supports_unit" for item in document.review_items)
    assert validate_workspace_evidence(tmp_path).publishable is True


def test_resolve_refuses_an_unsafe_relink_without_writing(tmp_path):
    from tht.evidence import EvidencePreparationError, resolve_workspace_evidence

    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    curated_path = tmp_path / "evidence" / "curated" / "domain" / "fascia-pediatrica.md"
    manifest_path = tmp_path / "evidence" / "manifest.yaml"
    original_curated = curated_path.read_text(encoding="utf-8")
    original_manifest = manifest_path.read_text(encoding="utf-8")

    with pytest.raises(EvidencePreparationError, match="source_invalid"):
        resolve_workspace_evidence(
            tmp_path,
            "evidence:fascia-pediatrica",
            source="../outside.md",
            git_status=lambda _: (),
        )

    assert curated_path.read_text(encoding="utf-8") == original_curated
    assert manifest_path.read_text(encoding="utf-8") == original_manifest


def test_resolve_refuses_a_relink_through_a_symlinked_source_directory(tmp_path):
    from tht.evidence import EvidencePreparationError, resolve_workspace_evidence

    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    curated_path = tmp_path / "evidence" / "curated" / "domain" / "fascia-pediatrica.md"
    manifest_path = tmp_path / "evidence" / "manifest.yaml"
    original_curated = curated_path.read_text(encoding="utf-8")
    original_manifest = manifest_path.read_text(encoding="utf-8")
    source_root = tmp_path / "evidence" / "source"
    outside_source = tmp_path / "outside-source"
    source_root.rename(outside_source)
    source_root.symlink_to(outside_source, target_is_directory=True)

    with pytest.raises(EvidencePreparationError, match="source_invalid"):
        resolve_workspace_evidence(
            tmp_path,
            "evidence:fascia-pediatrica",
            source="source/domain/patient.md",
            git_status=lambda _: (),
        )

    assert curated_path.read_text(encoding="utf-8") == original_curated
    assert manifest_path.read_text(encoding="utf-8") == original_manifest


def test_resolve_rejects_any_dirty_worktree_without_writing(tmp_path):
    from tht.evidence import EvidencePreparationError, resolve_workspace_evidence

    source_text = "I pazienti sotto i 18 anni sono pediatrici."
    _write_workspace(tmp_path, _evidence(source_text), source_text)
    curated_path = tmp_path / "evidence" / "curated" / "domain" / "fascia-pediatrica.md"
    manifest_path = tmp_path / "evidence" / "manifest.yaml"
    original_curated = curated_path.read_text(encoding="utf-8")
    original_manifest = manifest_path.read_text(encoding="utf-8")

    with pytest.raises(EvidencePreparationError, match="worktree_dirty"):
        resolve_workspace_evidence(
            tmp_path,
            "evidence:fascia-pediatrica",
            retire=True,
            git_status=lambda _: (" M README.md",),
        )

    assert curated_path.read_text(encoding="utf-8") == original_curated
    assert manifest_path.read_text(encoding="utf-8") == original_manifest