import pytest

from review_agent.models import (
    Conversation,
    ExportedSummaryFile,
    FileSummaryBatch,
    FileSummaryItem,
    Message,
    RegulatoryIssue,
    RegulatoryReviewBatch,
    WorkflowEvent,
    WorkflowNodeRun,
)
from review_agent.regulatory_review.workflow import (
    NODE_DEFINITIONS,
    create_regulatory_review_batch,
    find_latest_successful_summary_batch,
    start_regulatory_review_workflow,
)
from review_agent.services import stream_message
from review_agent.skill_router import SkillRoute, route_message_intent


pytestmark = pytest.mark.django_db


def test_rule_router_starts_regulatory_review_for_nmpa_keywords(monkeypatch, django_user_model):
    user = django_user_model.objects.create_user(username="owner", password="pass")
    conversation = Conversation.objects.create(user=user, title="会话")
    monkeypatch.setattr(
        "review_agent.skill_router._route_with_llm",
        lambda conversation, content, attachments: (_ for _ in ()).throw(ValueError("fallback")),
    )

    route = route_message_intent(conversation, "请做NMPA核查和风险预警")

    assert route.action == "regulatory_review"
    assert route.workflow_type == "regulatory_review"
    assert route.starts_regulatory_review


def test_find_latest_successful_summary_batch_ignores_failed_batches(django_user_model):
    user = django_user_model.objects.create_user(username="owner", password="pass")
    conversation = Conversation.objects.create(user=user, title="会话")
    success = FileSummaryBatch.objects.create(
        conversation=conversation,
        user=user,
        batch_no="FS-OK",
        status=FileSummaryBatch.Status.SUCCESS,
    )
    FileSummaryBatch.objects.create(
        conversation=conversation,
        user=user,
        batch_no="FS-FAILED",
        status=FileSummaryBatch.Status.FAILED,
    )

    assert find_latest_successful_summary_batch(conversation) == success


def test_create_regulatory_review_batch_initializes_nodes(django_user_model):
    user = django_user_model.objects.create_user(username="owner", password="pass")
    conversation = Conversation.objects.create(user=user, title="会话")
    message = Message.objects.create(conversation=conversation, role=Message.Role.USER, content="法规核查")
    summary = FileSummaryBatch.objects.create(
        conversation=conversation,
        user=user,
        batch_no="FS-OK",
        status=FileSummaryBatch.Status.SUCCESS,
    )

    batch = create_regulatory_review_batch(
        conversation=conversation,
        user=user,
        trigger_message=message,
        source_summary_batch=summary,
    )

    assert batch.status == RegulatoryReviewBatch.Status.PENDING
    assert WorkflowNodeRun.objects.filter(
        workflow_type="regulatory_review",
        workflow_batch_id=batch.pk,
    ).count() == len(NODE_DEFINITIONS)
    assert WorkflowEvent.objects.filter(
        workflow_type="regulatory_review",
        workflow_batch_id=batch.pk,
        event_type="workflow_created",
    ).exists()


def test_start_regulatory_review_workflow_runs_synchronously(django_user_model):
    user = django_user_model.objects.create_user(username="owner", password="pass")
    conversation = Conversation.objects.create(user=user, title="会话")
    summary = FileSummaryBatch.objects.create(
        conversation=conversation,
        user=user,
        batch_no="FS-OK",
        status=FileSummaryBatch.Status.SUCCESS,
    )
    batch = create_regulatory_review_batch(
        conversation=conversation,
        user=user,
        source_summary_batch=summary,
    )
    batch.condition_json = {"confirmed": True, "confirmed_conditions": {"product_category": "体外诊断试剂"}}
    batch.save(update_fields=["condition_json"])

    start_regulatory_review_workflow(batch, async_run=False)

    batch.refresh_from_db()
    assert batch.status == RegulatoryReviewBatch.Status.SUCCESS
    assert WorkflowEvent.objects.filter(
        workflow_type="regulatory_review",
        workflow_batch_id=batch.pk,
        event_type="workflow_completed",
    ).exists()


def test_stream_message_prompts_for_summary_when_missing(monkeypatch, django_user_model):
    user = django_user_model.objects.create_user(username="owner", password="pass")
    conversation = Conversation.objects.create(user=user, title="会话")
    monkeypatch.setattr(
        "review_agent.services.route_message_intent",
        lambda conversation, content: SkillRoute(
            action="regulatory_review",
            workflow_type="regulatory_review",
            confidence=0.9,
        ),
    )

    frames = list(stream_message(conversation, "请做法规核查"))

    joined = "".join(frames)
    assert "请先执行自动汇总" in joined
    assert not RegulatoryReviewBatch.objects.exists()


def test_stream_message_starts_regulatory_workflow(monkeypatch, settings, django_user_model):
    settings.REGULATORY_REVIEW_ASYNC = False
    user = django_user_model.objects.create_user(username="owner", password="pass")
    conversation = Conversation.objects.create(user=user, title="会话")
    FileSummaryBatch.objects.create(
        conversation=conversation,
        user=user,
        batch_no="FS-OK",
        status=FileSummaryBatch.Status.SUCCESS,
    )
    monkeypatch.setattr(
        "review_agent.services.route_message_intent",
        lambda conversation, content: SkillRoute(
            action="regulatory_review",
            workflow_type="regulatory_review",
            confidence=0.9,
        ),
    )

    frames = list(stream_message(conversation, "请做法规核查"))

    joined = "".join(frames)
    assert "workflow_started" in joined
    assert "\"workflow_type\": \"regulatory_review\"" in joined
    assert RegulatoryReviewBatch.objects.filter(conversation=conversation).exists()


def test_workflow_generates_issues_exports_and_assistant_summary(settings, tmp_path, django_user_model):
    settings.MEDIA_ROOT = tmp_path
    settings.REGULATORY_REVIEW_ASYNC = False
    settings.REGULATORY_RAG_CHROMA_PATH = tmp_path / "missing-rag"
    user = django_user_model.objects.create_user(username="owner", password="pass")
    conversation = Conversation.objects.create(user=user, title="会话")
    summary = FileSummaryBatch.objects.create(
        conversation=conversation,
        user=user,
        batch_no="FS-OK",
        status=FileSummaryBatch.Status.SUCCESS,
    )
    ifu_path = tmp_path / "ifu.txt"
    ifu_path.write_text("产品名称：甲胎蛋白检测试剂盒\n样本要求：血清\n有效期：12个月", encoding="utf-8")
    FileSummaryItem.objects.create(
        batch=summary,
        file_index=1,
        file_name="说明书.txt",
        file_type="txt",
        relative_path="说明书.txt",
        storage_path=str(ifu_path),
    )
    batch = create_regulatory_review_batch(
        conversation=conversation,
        user=user,
        source_summary_batch=summary,
    )
    batch.condition_json = {"confirmed": True, "confirmed_conditions": {"product_category": "体外诊断试剂"}}
    batch.save(update_fields=["condition_json"])

    start_regulatory_review_workflow(batch, async_run=False)

    batch.refresh_from_db()
    assert batch.status == RegulatoryReviewBatch.Status.SUCCESS
    assert RegulatoryIssue.objects.filter(batch=batch, severity="blocking").exists()
    assert ExportedSummaryFile.objects.filter(
        workflow_type="regulatory_review",
        workflow_batch_id=batch.pk,
    ).count() == 3
    assert conversation.messages.filter(role=Message.Role.ASSISTANT, content__contains="已完成 NMPA").exists()