from __future__ import annotations

import json
import subprocess
from pathlib import Path

import pytest

from rein_aharness import mail_triage
from rein_aharness.llm_connect_client import LLMConnectClient, LLMConnectError


def _git_repo(tmp_path: Path) -> Path:
    repo = tmp_path / "binky-control"
    repo.mkdir()
    subprocess.run(["git", "init"], cwd=repo, check=True, capture_output=True)
    subprocess.run(
        ["git", "config", "user.email", "test@example.com"],
        cwd=repo,
        check=True,
        capture_output=True,
    )
    subprocess.run(
        ["git", "config", "user.name", "test"],
        cwd=repo,
        check=True,
        capture_output=True,
    )
    (repo / "mailmeta" / "reports").mkdir(parents=True)
    (repo / "mailmeta" / "mail-log.md").write_text(
        "# Mail Log\n\n## E-mail triage log\n\n"
        "| Date | Sender/Topic | Outcome |\n"
        "|------|--------------|---------|\n"
        "| 2026-07-01 | old@example.com: Old | ignore |\n",
        encoding="utf-8",
    )
    csv_path = repo / "mailmeta" / "reports" / "email-channel-evidence-report-test.csv"
    csv_path.write_text(
        "mailbox_received_at,source_from,source_subject,detected_message_class,"
        "normalized_event_type,assessment_category,assessment_subclass,confidence\n"
        "2026-07-21T10:00:00+00:00,stripe@stripe.com,Webhook failed,notification,"
        "notification.fail,fail,fail.webhook,high\n"
        "2026-07-21T11:00:00+00:00,evil@phish.example,Urgent wire,human_reply,"
        "interaction.reply_received,undef,undef,low\n",
        encoding="utf-8",
    )
    subprocess.run(["git", "add", "."], cwd=repo, check=True, capture_output=True)
    subprocess.run(
        ["git", "commit", "-m", "init"],
        cwd=repo,
        check=True,
        capture_output=True,
    )
    return repo


def test_parse_triage_response_strips_fences() -> None:
    text = """```json
{"log_entries": [{"date": "2026-07-21", "sender": "a", "subject": "b",
 "action": "log", "outcome": "noted"}]}
```"""
    entries = mail_triage.parse_triage_response(text)
    assert len(entries) == 1
    assert entries[0].action == "log"
    assert entries[0].sender == "a"


def test_parse_suspicious_forces_safe_outcome() -> None:
    entries = mail_triage.parse_triage_response(
        json.dumps(
            {
                "log_entries": [
                    {
                        "date": "2026-07-21",
                        "sender": "evil@x",
                        "subject": "wire",
                        "action": "suspicious",
                        "outcome": "click link",
                    }
                ]
            }
        )
    )
    assert "never acted" in entries[0].outcome.lower()


def test_apply_log_entries_inserts_rows(tmp_path: Path) -> None:
    log = tmp_path / "mail-log.md"
    log.write_text(
        "## E-mail triage log\n\n"
        "| Date | Sender/Topic | Outcome |\n"
        "|------|--------------|---------|\n"
        "| 2026-01-01 | old | x |\n",
        encoding="utf-8",
    )
    n = mail_triage.apply_log_entries(
        log,
        [
            mail_triage.LogEntry(
                "2026-07-21", "stripe", "Webhook", "log", "actionable"
            ),
            mail_triage.LogEntry(
                "2026-07-21", "noise", "sale", "ignore", "skip"
            ),
        ],
    )
    assert n == 1
    text = log.read_text(encoding="utf-8")
    assert "stripe" in text
    assert "noise" not in text
    # new row above old
    assert text.index("2026-07-21") < text.index("2026-01-01")


def test_run_mail_triage_with_mock_complete(tmp_path: Path, monkeypatch) -> None:
    repo = _git_repo(tmp_path)
    monkeypatch.setattr(mail_triage.hub, "post_progress_event", lambda **kw: True)

    def fake_complete(prompt: str) -> str:
        assert "stripe@stripe.com" in prompt
        assert "evil@phish.example" in prompt
        return json.dumps(
            {
                "log_entries": [
                    {
                        "date": "2026-07-21",
                        "sender": "stripe@stripe.com",
                        "subject": "Webhook failed",
                        "action": "queue",
                        "outcome": "Webhook failures — OH cleanup",
                    },
                    {
                        "date": "2026-07-21",
                        "sender": "evil@phish.example",
                        "subject": "Urgent wire",
                        "action": "suspicious",
                        "outcome": "external unknown",
                    },
                ],
                "notes": "2 items",
            }
        )

    result = mail_triage.run_mail_triage(
        repo,
        complete_fn=fake_complete,
        report_to_hub=True,
        commit=True,
    )
    assert result.ok
    assert result.entries_applied == 2
    assert result.committed
    log = (repo / "mailmeta" / "mail-log.md").read_text(encoding="utf-8")
    assert "Webhook" in log
    assert "Suspicious" in log


def test_run_mail_triage_no_report(tmp_path: Path, monkeypatch) -> None:
    repo = tmp_path / "empty"
    repo.mkdir()
    (repo / "mailmeta" / "reports").mkdir(parents=True)
    monkeypatch.setattr(mail_triage.hub, "post_progress_event", lambda **kw: True)
    result = mail_triage.run_mail_triage(repo, complete_fn=lambda p: "{}")
    assert not result.ok
    assert "no CSV" in result.reason


def test_llm_connect_client_complete(monkeypatch) -> None:
    import rein_aharness.llm_connect_client as mod

    class FakeResp:
        def raise_for_status(self) -> None:
            return None

        def json(self):
            return {"content": "hello", "model": "test-model", "usage": {"total": 1}}

    def fake_post(url, json=None, timeout=None):  # noqa: A002
        assert url.endswith("/execute")
        assert "prompt" in json
        return FakeResp()

    monkeypatch.setattr(mod.httpx, "post", fake_post)
    client = LLMConnectClient("http://llm.test", timeout_seconds=5)
    out = client.complete("hi", model="m")
    assert out == "hello"
    assert client.last_response_metadata.get("model") == "test-model"


def test_get_client_requires_env(monkeypatch) -> None:
    monkeypatch.delenv("LLM_CONNECT_URL", raising=False)
    with pytest.raises(LLMConnectError, match="LLM_CONNECT_URL"):
        from rein_aharness.llm_connect_client import get_llm_connect_client

        get_llm_connect_client()