"""F1 generation consent + dossier gate (pure unit tests on shipped functions)."""
from __future__ import annotations

import os
from types import SimpleNamespace

import pytest

from core.projects.generation_consent import (
    ERROR_CODE,
    GROUNDING_BLOCKED,
    GROUNDING_REGULATION,
    GROUNDING_STRUCTURE,
    STRUCTURE_EXPORT_REASON,
    STRUCTURE_ONLY_PROMPT,
    apply_structure_consent,
    build_generation_gate,
    clear_structure_consent,
    consent_required,
    project_generation_meta,
    resolve_grounding_mode,
    sync_grounding_after_dossier_update,
)


@pytest.fixture(autouse=True)
def _flags_on(monkeypatch):
    monkeypatch.setenv("REQUIRE_DOSSIER_OR_CONSENT", "true")
    monkeypatch.setenv("ALLOW_STRUCTURE_WITHOUT_REGULATION", "true")


def test_consent_without_ack_rejected():
    ext, err = apply_structure_consent({}, ack=False, mode="structure_without_regulation", clerk_user_id="u1")
    assert err
    assert "ack" in err.lower() or "potwierdzenie" in err.lower()
    assert "generation_consent" not in ext


def test_blind_without_consent_blocked():
    ext = {"program_dossier": {"readiness": {"level": "blind"}}}
    gate = build_generation_gate(ext)
    assert gate["allowed"] is False
    assert gate["grounding_mode"] == GROUNDING_BLOCKED
    assert gate["code"] == ERROR_CODE
    assert gate["consent_required"] is True
    assert consent_required(ext) is True


def test_blind_with_valid_consent_structure_only():
    ext = {"program_dossier": {"readiness": {"level": "blind"}}}
    ext2, err = apply_structure_consent(
        ext, ack=True, mode="structure_without_regulation", clerk_user_id="user_abc", grant_id="g1"
    )
    assert err is None
    assert ext2["generation_consent"]["mode"] == "structure_without_regulation"
    assert ext2["generation_consent"]["granted_by"] == "user_abc"
    assert ext2["generation_consent"]["granted_at"]
    gate = build_generation_gate(ext2)
    assert gate["allowed"] is True
    assert gate["grounding_mode"] == GROUNDING_STRUCTURE
    assert gate["structure_prompt"]
    assert "NIE cytuj regulaminu" in gate["structure_prompt"]
    assert gate["human_review_required"] is True
    assert STRUCTURE_EXPORT_REASON in (gate["export_reason"] or "")


def test_after_non_blind_consent_cleared_to_regulation():
    ext = {
        "program_dossier": {"readiness": {"level": "blind"}},
        "generation_consent": {
            "mode": "structure_without_regulation",
            "granted_at": "2026-01-01T00:00:00+00:00",
            "granted_by": "u",
        },
        "grounding_mode": "structure_only",
    }
    # Simulate dossier became ready
    ext["program_dossier"] = {
        "readiness": {"level": "ready"},
        "regulation_documents": [
            {"url": "https://x.pl/reg.pdf", "role": "regulamin", "score": 40},
            {"url": "https://x.pl/rwp.pdf", "role": "rwp", "score": 38},
        ],
    }
    ext["precise_regulation_url"] = "https://x.pl/reg.pdf"
    synced = sync_grounding_after_dossier_update(ext)
    assert "generation_consent" not in synced
    assert resolve_grounding_mode(synced) == GROUNDING_REGULATION
    assert synced["grounding_mode"] == GROUNDING_REGULATION


def test_ready_does_not_need_consent():
    ext = {
        "program_dossier": {"readiness": {"level": "ready"}},
        "precise_regulation_url": "https://x.pl/a.pdf",
        "regulation_documents": [
            {"url": "https://x.pl/a.pdf", "role": "regulamin", "score": 40},
            {"url": "https://x.pl/b.pdf", "role": "rwp", "score": 30},
        ],
    }
    assert resolve_grounding_mode(ext) == GROUNDING_REGULATION
    assert consent_required(ext) is False
    _, err = apply_structure_consent(ext, ack=True, mode="structure_without_regulation", clerk_user_id="u")
    assert err  # not needed


def test_flag_off_allows_generation():
    os.environ["REQUIRE_DOSSIER_OR_CONSENT"] = "false"
    ext = {"program_dossier": {"readiness": {"level": "blind"}}}
    assert resolve_grounding_mode(ext) == GROUNDING_REGULATION
    assert build_generation_gate(ext)["allowed"] is True
    os.environ["REQUIRE_DOSSIER_OR_CONSENT"] = "true"


def test_clear_consent_returns_blocked_when_blind():
    ext = {
        "program_dossier": {"readiness": {"level": "blind"}},
        "generation_consent": {
            "mode": "structure_without_regulation",
            "granted_at": "2026-01-01T00:00:00+00:00",
            "granted_by": "u",
        },
    }
    cleared = clear_structure_consent(ext)
    assert "generation_consent" not in cleared
    assert resolve_grounding_mode(cleared) == GROUNDING_BLOCKED


def test_project_generation_meta_fields():
    ext = {"program_dossier": {"readiness": {"level": "blind"}}}
    meta = project_generation_meta(ext)
    assert meta["consent_required"] is True
    assert meta["generation_allowed"] is False
    assert meta["dossier_readiness"] == "blind"


def test_export_gate_structure_only_human_review():
    from core.projects.export_gate import evaluate_export_gate_with_guidance

    project = SimpleNamespace(
        external_context={
            "program_dossier": {"readiness": {"level": "blind"}},
            "generation_consent": {
                "mode": "structure_without_regulation",
                "granted_at": "2026-01-01T00:00:00+00:00",
                "granted_by": "u",
            },
            "grounding_mode": "structure_only",
        },
        final_document_audit_result={
            "status": "completed",
            "export_status": "ok",
            "is_approved": True,
            "human_review_required": True,
        },
    )
    gate = evaluate_export_gate_with_guidance(project)
    assert gate.get("structure_only") is True
    assert gate.get("human_review_required") is True
    assert any("strukturalny" in (g.get("reason") or "").lower() or "regulaminu" in (g.get("reason") or "").lower() for g in gate.get("guidance") or [])


def test_structure_prompt_constant():
    assert "DO WERYFIKACJI" in STRUCTURE_ONLY_PROMPT or "WERYFIKACJI" in STRUCTURE_ONLY_PROMPT
    assert "NIE cytuj" in STRUCTURE_ONLY_PROMPT or "nie cytuj" in STRUCTURE_ONLY_PROMPT.lower()


def test_dossier_stats_on_empty_db(monkeypatch):
    """Stats aggregation pure path with mock session."""
    from core.grants import dossier_ops

    class FakeQuery:
        def filter(self, *a, **k):
            return self

        def limit(self, n):
            return self

        def all(self):
            return []

    class FakeDB:
        def query(self, *a, **k):
            return FakeQuery()

    dist = dossier_ops.compute_readiness_distribution(FakeDB(), limit=10)
    assert dist["total"] == 0
    assert "pct_blind" in dist
    assert "flags" in dist


def test_soft_check_allows_structure_only_full_autopilot():
    """F1: structure_only consent must not be blocked by regulation soft-check."""
    from endpoints.generator import _soft_check_regulation_for_full_autopilot

    project = SimpleNamespace(
        external_context={
            "program_dossier": {"readiness": {"level": "blind"}},
            "generation_consent": {
                "mode": "structure_without_regulation",
                "granted_at": "2026-01-01T00:00:00+00:00",
                "granted_by": "u",
            },
            "grounding_mode": "structure_only",
            "regulation_pending": True,
            "regulation_source": "none",
        }
    )
    assert _soft_check_regulation_for_full_autopilot(project) is None


def test_f3_structure_only_skips_regulation_section_seed(monkeypatch):
    """F3: required_sections from advisor_brief only seed under regulation mode."""
    from endpoints import generator as gen_mod

    calls = {"reg": 0, "tmpl": 0}

    class FakeSection:
        def __init__(self, st="desc", content=""):
            self.section_type = st
            self.content = content
            self.order = 0

    class FakeQ:
        def __init__(self, rows):
            self._rows = rows

        def filter(self, *a, **k):
            return self

        def order_by(self, *a, **k):
            return self

        def all(self):
            return self._rows

    class FakeDB:
        def query(self, model):
            name = getattr(model, "__name__", str(model))
            if "Template" in name:
                return FakeQ([])
            return FakeQ([])  # no existing sections

        def commit(self):
            pass

    def fake_seed_reg(db, pid, required, program_type):
        calls["reg"] += 1
        return [FakeSection("from_reg")], {"from_reg": "From regulation"}

    def fake_seed_tmpl(db, pid, program_type):
        calls["tmpl"] += 1
        return [FakeSection("from_tmpl", "x" * 20)]

    monkeypatch.setattr(
        "core.projects.section_seeder.seed_sections_from_regulation",
        fake_seed_reg,
        raising=False,
    )
    # patch where used inside function
    import core.projects.section_seeder as seeder

    monkeypatch.setattr(seeder, "seed_sections_from_regulation", fake_seed_reg)
    monkeypatch.setattr(seeder, "seed_sections_from_templates", fake_seed_tmpl)

    project = SimpleNamespace(
        program_type="SMART",
        external_context={
            "program_dossier": {"readiness": {"level": "blind"}},
            "generation_consent": {
                "mode": "structure_without_regulation",
                "granted_at": "2026-01-01T00:00:00+00:00",
                "granted_by": "u",
            },
            "grounding_mode": "structure_only",
            "required_sections": ["Sekcja z advisor_brief", "Inna"],
        },
    )
    plan, _ = gen_mod._ensure_sections_plan_from_project(FakeDB(), project, "p1")
    assert calls["reg"] == 0, "structure_only must not seed from regulation required_sections"
    assert calls["tmpl"] == 1
    assert plan  # templates used

    # regulation mode uses required_sections
    calls["reg"] = calls["tmpl"] = 0
    project_reg = SimpleNamespace(
        program_type="SMART",
        external_context={
            "program_dossier": {
                "readiness": {"level": "ready"},
                "regulation_documents": [
                    {"url": "https://x.pl/a.pdf", "role": "regulamin", "score": 40},
                    {"url": "https://x.pl/b.pdf", "role": "rwp", "score": 30},
                ],
            },
            "precise_regulation_url": "https://x.pl/a.pdf",
            "required_sections": ["Sekcja A", "Sekcja B"],
        },
    )
    gen_mod._ensure_sections_plan_from_project(FakeDB(), project_reg, "p2")
    assert calls["reg"] == 1
    assert calls["tmpl"] == 0