import json
from datetime import UTC, datetime
from pathlib import Path

import pytest

from ai_platform.lead_scoring.application.repository import AIProfileRecord
from ai_platform.lead_scoring.application.scoring_execution import ScoringExecutionUseCases
from ai_platform.lead_scoring.application.scoring_execution_repository import (
    Evidence,
    Scoring,
    ScoringExecutionRun,
    ScoringResult,
)

FIXTURE = Path(__file__).parent / "fixtures" / "mock_omni_run.json"


class RunRepository:
    def __init__(self, run: ScoringExecutionRun, profile: AIProfileRecord):
        self.run = run
        self.profile = profile
        self.result: ScoringResult | None = None

    async def find_run(self, run_id: str):
        return self.run

    async def find_profile(self, version: str):
        assert version == self.run.profile_version
        return self.profile

    async def mark_running(self, run_id: str):
        pass

    async def complete(self, run_id: str, result: ScoringResult, completed_at: datetime):
        self.result = result

    async def fail(self, run_id: str, completed_at: datetime, error_code: str):
        pytest.fail(f"execution failed: {error_code}")

    async def mark_interrupted(self, completed_at: datetime):
        pytest.fail("unexpected recovery")


class StubProvider:
    def __init__(self):
        self.models: list[str] = []
        self.keys: list[str] = []
        self.user_prompts: list[str] = []
        self.system_prompts: list[str] = []
        self.snapshots: list[dict] = []

    async def extract_evidence(self, *, model, snapshot, vkey, timeout):
        self.models.append(model)
        self.keys.append(vkey)
        self.snapshots.append(snapshot)
        return [Evidence("interest", "Asked about enrollment", "mock-message-001")]

    async def score(self, *, model, system_prompt, user_prompt, vkey, timeout):
        self.models.append(model)
        self.keys.append(vkey)
        self.user_prompts.append(user_prompt)
        self.system_prompts.append(system_prompt)
        return Scoring(80, 0.8, "Evidence supports intent")


@pytest.mark.asyncio
async def test_execution_uses_frozen_profile_provider_and_never_forwards_vkey_to_openai():
    payload = json.loads(FIXTURE.read_text())
    payload["ai_profile"] = "medium"
    payload["scoring_config"].update(rule_weight=0.5, ai_weight=0.5)
    run = ScoringExecutionRun("run-1", "pending", payload, "old-profile")
    profile = AIProfileRecord(
        "old-profile",
        "gemini-3.5-flash-lite",
        "prompt",
        30,
        {},
        False,
        "openai_compatible",
        "http://127.0.0.1:8318",
    )
    repository = RunRepository(run, profile)
    old_provider = StubProvider()
    active_aihub_provider = StubProvider()

    async def no_op():
        pass

    selected_urls: list[str] = []

    def provider_for_url(url: str) -> StubProvider:
        selected_urls.append(url)
        return old_provider

    cases = ScoringExecutionUseCases(
        repository,
        {"aihub": active_aihub_provider},
        no_op,
        no_op,
        lambda: datetime(2026, 9, 28, tzinfo=UTC),
        provider_for_url,
    )
    await cases.execute(run.id, "caller-vkey-should-not-reach-openai")
    assert repository.result is not None and repository.result.result_mode == "hybrid"
    assert selected_urls == ["http://127.0.0.1:8318"]
    assert old_provider.models == ["gemini-3.5-flash-lite"] * 2
    assert old_provider.keys == ["", ""]
    assert active_aihub_provider.models == []


@pytest.mark.parametrize("provider_name", ["aihub", "openai_compatible"])
@pytest.mark.parametrize("description", [None, "", "   ", "Khách chủ động hỏi điều kiện đăng ký"])
async def test_execution_uses_descriptions_only_as_supplemental_scoring_context(
    provider_name, description
):
    payload = json.loads(FIXTURE.read_text())
    payload["ai_profile"] = "medium"
    payload["scoring_config"].update(rule_weight=0.5, ai_weight=0.5)
    payload["scoring_config"]["rules"][0].update(id="private-rule-id", description=description)
    run = ScoringExecutionRun("run-1", "pending", payload, "profile-v1")
    profile = AIProfileRecord("profile-v1", "model", "prompt", 30, {}, True, provider_name)
    repository = RunRepository(run, profile)
    provider = StubProvider()

    async def no_op():
        pass

    cases = ScoringExecutionUseCases(
        repository,
        {provider_name: provider},
        no_op,
        no_op,
        lambda: datetime(2026, 9, 28, tzinfo=UTC),
    )
    await cases.execute(run.id, "caller-vkey")

    assert repository.result is not None and repository.result.result_mode == "hybrid"
    assert provider.snapshots == [payload["snapshot"]]
    assert len(provider.user_prompts) == 1
    prompt = provider.user_prompts[0]
    if description and description.strip():
        assert json.loads(prompt.split("\nRULE_DESCRIPTIONS:\n", 1)[1]) == [description]
        assert description not in provider.system_prompts[0]
    else:
        assert "RULE_DESCRIPTIONS:" not in prompt
    for excluded in ('"points"', '"rule_weight"', '"ai_weight"', "private-rule-id", "caller-vkey"):
        assert excluded not in prompt


@pytest.mark.parametrize("vkey", ["private-vkey", 'private"vkey', "private\\vkey"])
@pytest.mark.parametrize("location", ["description", "snapshot"])
async def test_vkey_in_prompt_data_falls_back_before_calling_ai(vkey, location):
    payload = json.loads(FIXTURE.read_text())
    payload["ai_profile"] = "medium"
    payload["scoring_config"].update(rule_weight=0.5, ai_weight=0.5)
    if location == "description":
        payload["scoring_config"]["rules"][0]["description"] = vkey
    else:
        payload["snapshot"]["lead_profile"]["name"] = vkey
    run = ScoringExecutionRun("run-1", "pending", payload, "profile-v1")
    profile = AIProfileRecord("profile-v1", "model", "prompt", 30, {}, True)
    repository = RunRepository(run, profile)
    provider = StubProvider()

    async def no_op():
        pass

    cases = ScoringExecutionUseCases(
        repository, {"aihub": provider}, no_op, no_op, lambda: datetime(2026, 9, 28, tzinfo=UTC)
    )
    await cases.execute(run.id, vkey)

    assert repository.result is not None
    assert repository.result.error_code == "vkey_prompt_conflict"
    assert repository.result.result_mode == "rules_only_fallback"
    assert provider.models == []