import re
from datetime import datetime, timedelta, timezone

from fastapi.testclient import TestClient
from sqlalchemy import select

from central.app.blocked_products import upsert_blocker
from central.app.events import record_event
from central.app.main import create_app
from central.app.models import Agent, AgentEvent, AgentSnapshot, Installation, Job, Tenant
from central.tests.test_control_plane import seed, setup_db


def _panel_client():
    session_factory = setup_db()
    agent_id, _ = seed(session_factory)
    now = datetime(2026, 9, 22, 19, 11, tzinfo=timezone.utc)
    with session_factory() as session:
        installation = session.scalar(select(Installation).where(Installation.agent_id == agent_id))
        agent = session.get(Agent, agent_id)
        agent.agent_version = "0.9.0"
        snapshot = session.scalar(select(AgentSnapshot).where(AgentSnapshot.installation_id == installation.id))
        snapshot.total_products = 50
        snapshot.fiscally_complete = 49
        snapshot.coverage_percent = 98
        job = Job(
            agent_id=agent_id,
            kind="REPROCESS_PRODUCTS",
            status="RUNNING",
            created_at=now - timedelta(minutes=3),
            started_at=now - timedelta(minutes=2),
            payload={"codigos": ["P-001"]},
        )
        session.add(job)
        session.flush()
        blocker = upsert_blocker(
            session,
            installation.tenant_id,
            {
                "company": "Acme",
                "product_code": "P-001",
                "description": "Produto de teste",
                "blocker_type": "BLOCKED_MISSING_EVIDENCE",
                "field": "CFOP",
                "reason_code": "MISSING_CONTEXT",
                "input_fingerprint": "page-test",
                "evidence_summary": {"source": "snapshot"},
            },
            installation_id=installation.id,
        )
        record_event(
            session,
            tenant_id=installation.tenant_id,
            installation_id=installation.id,
            agent_id=agent_id,
            severity="WARNING",
            event_type="PRODUCT_BLOCKED",
            message="Contexto fiscal ausente",
            job_id=job.id,
            product_code="P-001",
            blocker_id=blocker.id,
            occurred_at=now,
        )
        session.commit()

    client = TestClient(create_app(database_probe=lambda: True, session_factory=session_factory, bootstrap_token=None))
    client._session_factory = session_factory
    login = client.post("/login", data={"username": "operator", "password": "a-secure-password"}, follow_redirects=False)
    assert login.status_code == 303
    return client, agent_id, blocker.id


def test_dashboard_renders_operational_queue_labels_and_human_dates():
    client, _, _ = _panel_client()

    response = client.get("/")

    assert response.status_code == 200
    for label in ("Agents total", "Online", "Degraded", "Offline", "Failed", "Unknown"):
        assert label in response.text
    assert "Produtos bloqueados" in response.text
    assert "Blockers abertos" in response.text
    assert "ATENÇÃO NECESSÁRIA" in response.text
    assert "Ver todos" in response.text
    assert "Jobs com falha" in response.text
    assert "Agents desatualizados" in response.text
    assert not re.search(r"\d{4}-\d{2}-\d{2}T\d{2}:\d{2}", response.text)


def test_dashboard_lists_bounded_failed_job_rows_with_identity_error_age_and_empty_state():
    client, agent_id, _ = _panel_client()
    factory = client._session_factory
    with factory() as session:
        for index in range(12):
            session.add(Job(agent_id=agent_id, kind="REPROCESS_PRODUCTS", status="FAILED", error=f"erro curto {index}", created_at=datetime(2026, 9, 22, 18, 0, tzinfo=timezone.utc)))
        session.commit()
    response = client.get("/")
    assert response.status_code == 200
    assert "Acme" in response.text and "Acme ERP" in response.text and "srv-01" in response.text
    assert "erro curto" in response.text and "Job ID" in response.text and "Criado" in response.text
    assert 'href="/jobs?job_id=' in response.text
    assert response.text.count("erro curto") == 10
    with factory() as session:
        session.query(Job).filter(Job.status == "FAILED").delete()
        session.commit()
    assert "Nenhum job com falha." in client.get("/").text


def test_blocker_summary_uses_complete_filtered_relation_and_tenant_product_identity():
    client, agent_id, _ = _panel_client()
    factory = client._session_factory
    with factory() as session:
        original = session.scalar(select(Installation).where(Installation.agent_id == agent_id))
        other_tenant = Tenant(name="Outra empresa")
        session.add(other_tenant); session.flush()
        other_agent = Agent(tenant_id=other_tenant.id, name="agent-2", token_hash="y" * 64)
        session.add(other_agent); session.flush()
        other_installation = Installation(agent_id=other_agent.id, tenant_id=other_tenant.id, installation_id="22222222-2222-4222-8222-222222222222", display_name="Outra ERP", hostname="srv-02")
        session.add(other_installation); session.flush()
        for index in range(55):
            upsert_blocker(session, original.tenant_id, {"company": "Acme", "product_code": f"P-{index:03}", "blocker_type": "BLOCKED_MISSING_EVIDENCE", "field": "CFOP", "reason_code": "MISSING", "input_fingerprint": f"many-{index}"}, installation_id=original.id)
        upsert_blocker(session, other_tenant.id, {"company": "Outra", "product_code": "P-000", "blocker_type": "BLOCKED_MISSING_EVIDENCE", "field": "NCM", "reason_code": "MISSING", "input_fingerprint": "other-tenant"}, installation_id=other_installation.id)
        resolved = upsert_blocker(session, original.tenant_id, {"company": "Acme", "product_code": "P-RES", "blocker_type": "BLOCKED_MISSING_EVIDENCE", "field": "ST", "reason_code": "MISSING", "input_fingerprint": "resolved"}, installation_id=original.id)
        resolved.resolved_at = datetime.now(timezone.utc)
        session.commit()
    open_page = client.get("/blockers?status=OPEN&field=CFOP")
    assert open_page.status_code == 200
    assert '<span>Blockers abertos</span><strong>56</strong>' in open_page.text
    assert '<span>Produtos afetados</span><strong>55</strong>' in open_page.text
    assert '<span>Clientes afetados</span><strong>1</strong>' in open_page.text
    resolved_page = client.get("/blockers?status=RESOLVED")
    assert '<span>Blockers abertos</span><strong>0</strong>' in resolved_page.text
    assert '<span>Produtos afetados</span><strong>1</strong>' in resolved_page.text
    all_page = client.get("/blockers?status=ALL")
    assert '<span>Blockers abertos</span><strong>57</strong>' in all_page.text
    assert '<span>Produtos afetados</span><strong>57</strong>' in all_page.text
    assert "Produtos afetados" in open_page.text and "Clientes afetados" in open_page.text


def test_agents_render_separate_health_and_fiscal_status_with_server_sort():
    client, _, _ = _panel_client()

    response = client.get("/agents?sort=worst_coverage&health=ONLINE&search=Acme")

    assert response.status_code == 200
    for label in ("Cliente", "Nome de exibição", "Hostname", "Saúde técnica", "Status fiscal", "Cobertura fiscal", "Versão"):
        assert label in response.text
    assert "Acme ERP" in response.text
    assert "srv-01" in response.text
    assert "98,0%" in response.text
    assert 'name="health"' in response.text
    assert 'value="Acme"' in response.text
    assert 'value="worst_coverage"' in response.text


def test_jobs_render_client_identity_duration_and_preserve_filters():
    client, _, _ = _panel_client()

    response = client.get("/jobs?status=RUNNING&search=Acme")

    assert response.status_code == 200
    for label in ("Cliente", "Nome de exibição", "Hostname", "Job ID", "Tipo", "Status", "Criado", "Finalizado", "Duração", "Erro"):
        assert label in response.text
    assert "Acme" in response.text
    assert "srv-01" in response.text
    assert "em andamento" in response.text
    assert 'value="Acme"' in response.text
    assert '<option value="RUNNING" selected>' in response.text
    assert "Agent 1" not in response.text


def test_blockers_render_visible_filters_summary_priority_and_detail_link():
    client, _, blocker_id = _panel_client()

    response = client.get("/blockers?client=Acme&installation=srv-01&field=CFOP&blocker_type=BLOCKED_MISSING_EVIDENCE&status=OPEN&age=0h&search=P-001")

    assert response.status_code == 200
    for label in ("Cliente", "Instalação / Agent / Servidor", "Campo", "Tipo de blocker", "Status", "Idade", "Produto ou busca", "Blockers abertos", "Produtos afetados", "Clientes afetados", "CFOP", "ST", "ICMS", "CSOSN", "NCM", "OTHER", "Prioridade"):
        assert label in response.text
    assert f"/blockers/{blocker_id}" in response.text
    assert "CRITICAL" in response.text or "HIGH" in response.text
    assert 'value="Acme"' in response.text
    assert 'value="BLOCKED_MISSING_EVIDENCE"' in response.text
    assert "window.confirm" not in response.text


def test_agent_and_blocker_details_keep_safe_forms_and_human_event_rows():
    client, agent_id, blocker_id = _panel_client()
    with client._session_factory() as session:
        installation = session.scalar(select(Installation).where(Installation.agent_id == agent_id))
        upsert_blocker(session, installation.tenant_id, {"company": "Acme", "product_code": "LEGACY", "blocker_type": "BLOCKED_MISSING_EVIDENCE", "field": "ST", "reason_code": "LEGACY", "input_fingerprint": "tenant-only"})
        session.commit()

    agent_response = client.get(f"/agents/{agent_id}?tab=events&severity=WARNING&event_type=PRODUCT_BLOCKED&page=2")
    blocker_response = client.get(f"/blockers/{blocker_id}")

    assert agent_response.status_code == 200
    for label in ("Cliente", "Nome de exibição", "Hostname", "Saúde técnica", "Status fiscal", "Último heartbeat", "Versão", "Empresa", "UF", "CRT", "Eventos recentes", "Severidade", "Tipo de evento"):
        assert label in agent_response.text
    assert "Contexto fiscal ausente" in agent_response.text
    assert f"/blockers?agent_id={agent_id}" in agent_response.text
    assert ">CFOP</span><b>1</b>" in agent_response.text
    assert ">ST</span><b>0</b>" in agent_response.text
    agent_blockers = client.get(f"/blockers?agent_id={agent_id}")
    assert "Produto de teste" in agent_blockers.text and "LEGACY" not in agent_blockers.text
    assert not re.search(r"\d{4}-\d{2}-\d{2}T\d{2}:\d{2}", agent_response.text)
    assert 'value="WARNING" selected' in agent_response.text
    assert 'value="PRODUCT_BLOCKED"' in agent_response.text

    assert blocker_response.status_code == 200
    for label in ("Detalhes do blocker", "Evidência", "Contexto atual", "Salvar contexto e reprocessar", "Chave de contexto", "Valor", "Escopo", "Nota"):
        assert label in blocker_response.text
    assert 'name="context"' not in blocker_response.text
    assert "data-confirm" not in blocker_response.text
    assert not re.search(r"\d{4}-\d{2}-\d{2}T\d{2}:\d{2}", blocker_response.text)


def test_agent_detail_resolves_agent_after_first_hundred_installations():
    client, _, _ = _panel_client()
    factory = client._session_factory
    with factory() as session:
        tenant = session.scalar(select(Tenant).where(Tenant.name == "Acme"))
        target_id = 0
        for index in range(105):
            agent = Agent(tenant_id=tenant.id, name=f"late-{index}", token_hash=f"{index:064d}")
            session.add(agent); session.flush()
            session.add(Installation(agent_id=agent.id, tenant_id=tenant.id, installation_id=f"{index + 10:08d}-1111-4111-8111-111111111111", display_name=f"Late ERP {index}", hostname=f"late-{index}"))
            target_id = agent.id
        session.commit()
    response = client.get(f"/agents/{target_id}")
    assert response.status_code == 200
    assert "Late ERP 104" in response.text


def test_agent_event_filters_lookahead_and_safe_event_reference_links_and_confirmation():
    client, agent_id, _ = _panel_client()
    factory = client._session_factory
    with factory() as session:
        installation = session.scalar(select(Installation).where(Installation.agent_id == agent_id))
        job = session.scalar(select(Job).where(Job.agent_id == agent_id))
        for index in range(27):
            session.add(AgentEvent(tenant_id=installation.tenant_id, installation_id=installation.id, agent_id=agent_id, severity="INFO", event_type="HEARTBEAT", message=f"evento {index}", structured_context={}, job_id=job.id, product_code="P-001", occurred_at=datetime(2026, 9, 21 + index % 2, tzinfo=timezone.utc)))
        session.add(AgentEvent(tenant_id=installation.tenant_id, installation_id=installation.id, agent_id=agent_id, severity="INFO", event_type="HEARTBEAT", message="evento anterior ao filtro", structured_context={}, occurred_at=datetime(2026, 9, 20, tzinfo=timezone.utc)))
        session.commit()
    first = client.get(f"/agents/{agent_id}?tab=events&since=2026-09-21&until=2026-09-22")
    assert first.status_code == 200
    assert 'name="since"' in first.text and 'name="until"' in first.text
    assert "evento anterior ao filtro" not in first.text
    assert "Próxima" in first.text and "since=2026-09-21" in first.text and "until=2026-09-22" in first.text
    last = client.get(f"/agents/{agent_id}?tab=events&event_page=2&since=2026-09-21&until=2026-09-22")
    assert "Anterior" in last.text and "Próxima" not in last.text
    assert "/jobs?job_id=" in first.text and "/blockers?agent_id=" in first.text
    csrf = client.cookies.get("gti_csrf")
    blocked = client.post(f"/agents/{agent_id}/reprocess", data={"csrf_token": csrf})
    assert blocked.status_code == 400 and "confirmar" in blocked.text.lower() and 'name="confirm"' in blocked.text
    confirmation = client.get(f"/agents/{agent_id}/reprocess-confirmation")
    assert confirmation.status_code == 200 and 'name="confirm"' in confirmation.text and 'required' in confirmation.text
    assert f'href="/agents/{agent_id}"' in confirmation.text
    assert client.post(f"/agents/{agent_id}/reprocess", data={"csrf_token": "wrong", "confirm": "yes"}).status_code == 403
    assert client.post(f"/agents/{agent_id}/reprocess", data={"csrf_token": csrf, "confirm": "yes"}, follow_redirects=False).status_code == 303