"""First journal impulse invariants. Run from backend/: python tests/test_journal_opening.py"""
from __future__ import annotations

import os
import sys
import tempfile
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT))

os.environ["KANSHO_DB_PATH"] = str(Path(tempfile.gettempdir()) / "kansho-opening-test.sqlite")
os.environ["KANSHO_MEDIA_ROOT"] = str(Path(tempfile.gettempdir()) / "kansho-opening-media")
os.environ["KANSHO_FAKE_PROVIDER"] = "1"
os.environ["KANSHO_FAKE_DETECT"] = "1"
Path(os.environ["KANSHO_DB_PATH"]).unlink(missing_ok=True)
Path(os.environ["KANSHO_MEDIA_ROOT"]).mkdir(parents=True, exist_ok=True)

from fastapi.testclient import TestClient
from main import app
from journal_opening import (
    NEUTRAL_OPENING,
    attested_plans_from_user_texts,
    collect_opening_context,
    is_attested_plan,
)
from journal_reconstruct import assign_source_ids
from retrieval import pair_user_priority_messages


def expect(ok: bool, message: str) -> None:
    if not ok:
        raise SystemExit(f"FAIL: {message}")
    print(f"OK  {message}")


def header(token: str) -> dict:
    return {"X-Auth-Token": token}


def open_space_day(client, headers, title, date):
    space = client.post("/api/journal/spaces", headers=headers, json={"title": title})
    day = client.post(
        f"/api/journal/spaces/{space.json()['id']}/days",
        headers=headers,
        json={"calendar_date": date},
    )
    return space.json(), day.json()


def start_conv(client, headers, day_id):
    return client.post(f"/api/journal/days/{day_id}/conversations", headers=headers, json={"title": "Gespräch"})


def main() -> None:
    expect(is_attested_plan("Morgen wollen wir nach Cres fahren."), "future intent is a plan")
    expect(is_attested_plan("Wir haben vor, später an den Hafen zu gehen."), "vorhaben is a plan")
    expect(not is_attested_plan("Heute war der Hafen ruhig. Kirschen am Stand."), "past report is not a plan")
    expect(not is_attested_plan("Wir standen vor dem Hafen und aßen Kirschen."), "vor without haben is not a plan")
    expect(not is_attested_plan("Hafen Kirschen Wind"), "word overlap is not a plan")
    plans = attested_plans_from_user_texts(
        ["Heute war der Hafen ruhig.", "Morgen wollen wir nach Cres fahren.", "Hafen Kirschen"]
    )
    expect(len(plans) == 1 and "Cres" in plans[0], "only attested plan sentences are kept")
    expect(
        not any(is_attested_plan(text) for text in ["Was davon möchtest du festhalten?", "Die Fahrt nach Cres war schön."]),
        "assistant-like completion is not treated as a user plan by the helper",
    )

    with TestClient(app) as client:
        setup = client.post("/api/auth/setup", json={"email": "lars@example.test", "name": "Lars", "password": "test-pass"})
        headers = header(setup.json()["token"])
        other = client.post(
            "/api/users",
            headers=headers,
            json={"email": "ute@example.test", "name": "Ute", "password": "user-pass", "role": "user"},
        )
        expect(other.status_code == 200, "second profile")
        other_headers = header(
            client.post("/api/auth/login", json={"email": "ute@example.test", "password": "user-pass"}).json()["token"]
        )

        empty_space, empty_day = open_space_day(client, headers, "Leer", "2026-08-21")
        empty = start_conv(client, headers, empty_day["day"]["id"])
        expect(empty.status_code == 200, f"empty opening {empty.text}")
        expect(empty.json().get("opening", {}).get("kind") == "local_neutral", "no context uses local neutral")
        expect(empty.json()["opening"]["assistant"]["body"] == NEUTRAL_OPENING, "neutral impulse stored")
        expect(empty.json()["opening"]["calls"] == 0, "neutral opening does not call a model")
        empty_msgs = empty.json().get("messages") or []
        expect(len(empty_msgs) == 1 and empty_msgs[0]["role"] == "assistant", "neutral opening is assistant-first")

        plan_space, plan_day = open_space_day(client, headers, "Urlaub", "2026-08-01")
        plan_conv = start_conv(client, headers, plan_day["day"]["id"])
        client.post(
            f"/api/journal/conversations/{plan_conv.json()['id']}/turn",
            headers=headers,
            json={"body": "Morgen wollen wir nach Cres fahren. Die Fähre ist schon bedacht."},
        )
        later = client.post(
            f"/api/journal/spaces/{plan_space['id']}/days",
            headers=headers,
            json={"calendar_date": "2026-08-02"},
        )
        planned = start_conv(client, headers, later.json()["day"]["id"])
        facts = collect_opening_context(setup.json()["profile_id"], planned.json()["id"])
        expect(facts["has_relevant_context"], "attested plan counts as relevant context")
        expect(any("Cres" in item and is_attested_plan(item) for item in facts["attested_plans"]), "plan comes from user wording")
        expect(all(item in facts["user_texts"] for item in facts["attested_plans"]), "plans are a subset of user texts")
        expect(planned.json().get("opening", {}).get("kind") == "model", "attested plan uses the dialogue path")
        intern = (planned.json().get("opening") or {}).get("trace") or {}
        intern_text = intern.get("intern") or ""
        expect("Belegte Vorhaben" in intern_text, "opening policy reaches the prompt")
        expect("kein bewiesenes wiederkehrendes Muster" in intern_text or "kein bewiesenes" in intern_text, "pattern rule is in the opening hint")

        thread_space, thread_day = open_space_day(client, headers, "Tagfaden", "2026-08-10")
        first = start_conv(client, headers, thread_day["day"]["id"])
        client.post(
            f"/api/journal/conversations/{first.json()['id']}/turn",
            headers=headers,
            json={"body": "Morgens am Markt, danach noch offen, wie der Nachmittag wird."},
        )
        second = start_conv(client, headers, thread_day["day"]["id"])
        thread_facts = collect_opening_context(setup.json()["profile_id"], second.json()["id"])
        expect(thread_facts["open_day_points"], "same-day user text is an open point")
        expect(
            any("Markt" in item or "Nachmittag" in item for item in thread_facts["open_day_points"]),
            "open point is the day's user wording",
        )
        expect(second.json().get("opening", {}).get("kind") == "model", "open day thread uses the dialogue path")

        overlap_space, overlap_day = open_space_day(client, headers, "Overlap", "2026-08-03")
        overlap_conv = start_conv(client, headers, overlap_day["day"]["id"])
        client.post(
            f"/api/journal/conversations/{overlap_conv.json()['id']}/turn",
            headers=headers,
            json={"body": "Heute war der Hafen ruhig. Kirschen am Stand, Wind von See."},
        )
        client.post(
            "/api/journal/entries",
            headers=headers,
            json={
                "journal_day_id": overlap_day["day"]["id"],
                "title": "Hafen",
                "body": "Heute war der Hafen ruhig. Kirschen am Stand.",
                "origin": "user_edit",
            },
        )
        later_overlap = client.post(
            f"/api/journal/spaces/{overlap_space['id']}/days",
            headers=headers,
            json={"calendar_date": "2026-08-04"},
        )
        overlap_open = start_conv(client, headers, later_overlap.json()["day"]["id"])
        overlap_facts = collect_opening_context(setup.json()["profile_id"], overlap_open.json()["id"])
        expect(not overlap_facts["attested_plans"], "random overlap is not an attested plan")
        expect(not overlap_facts["has_relevant_context"], "recency without plan or open day is not relevant opening context")
        expect(overlap_open.json().get("opening", {}).get("kind") == "local_neutral", "overlap falls back to neutral")
        expect("Muster" not in (overlap_open.json().get("opening") or {}).get("assistant", {}).get("body", ""), "neutral impulse does not claim a pattern")

        asst_space, asst_day = open_space_day(client, headers, "Assistent", "2026-08-05")
        asst_conv = start_conv(client, headers, asst_day["day"]["id"])
        from dialogue_store import append_message

        append_message(
            setup.json()["profile_id"],
            asst_conv.json()["id"],
            "Morgen wollen wir nach Cres fahren.",
            role="assistant",
        )
        next_asst = client.post(
            f"/api/journal/spaces/{asst_space['id']}/days",
            headers=headers,
            json={"calendar_date": "2026-08-06"},
        )
        asst_open = start_conv(client, headers, next_asst.json()["day"]["id"])
        asst_facts = collect_opening_context(setup.json()["profile_id"], asst_open.json()["id"])
        expect(not asst_facts["attested_plans"], "assistant wording is not a user plan")
        expect("Cres" not in " ".join(asst_facts["attested_plans"]), "assistant plan sentence stays out of attested plans")
        expect(asst_facts["assistant_is_not_user_fact"], "adapter marks assistant as non-fact")

        pair_space, pair_day = open_space_day(client, headers, "Paarung", "2026-08-07")
        pair_conv = start_conv(client, headers, pair_day["day"]["id"])
        expect((pair_conv.json().get("messages") or [])[0]["role"] == "assistant", "assistant-first stored")
        user_turn = client.post(
            f"/api/journal/conversations/{pair_conv.json()['id']}/turn",
            headers=headers,
            json={"body": "Nach der Fähre kamen wir spät an. Anna kaufte Brot."},
        )
        expect(user_turn.status_code == 200, "user turn after opening")
        msgs = user_turn.json()["messages"]
        users = [item for item in msgs if item["role"] == "user"]
        expect(len(users) == 1, "exactly one user source after opening plus turn")
        paired = pair_user_priority_messages(msgs)
        paired_users = [item for item in paired if item["role"] == "user"]
        expect([item["body"] for item in paired_users] == [item["body"] for item in users], "pairing keeps every user source")
        labeled = assign_source_ids(paired)
        expect(
            [item["source_id"] for item in labeled if item["role"] == "user"] == ["u1"],
            "first user source is u1 even after an opening assistant",
        )
        draft = client.post(
            f"/api/journal/days/{pair_day['day']['id']}/generate",
            headers=headers,
            json={"conversation_ids": [pair_conv.json()["id"]]},
        )
        expect(draft.status_code == 200, f"generate after opening {draft.text}")
        reconstruct = None
        for stage in (draft.json().get("trace") or {}).get("stages") or []:
            if stage.get("purpose") == "journal_reconstruct":
                reconstruct = stage
        intern = (reconstruct or {}).get("intern") or ""
        expect("Anna kaufte Brot" in intern, "user source reaches reconstruction")
        expect("[u1]" in intern, "user source id assigned")
        narrate = None
        for stage in (draft.json().get("trace") or {}).get("stages") or []:
            if stage.get("purpose") == "journal_generate":
                narrate = stage
        narrate_intern = (narrate or {}).get("intern") or ""
        expect("verified_artifact" in narrate_intern or "sources" in narrate_intern, "stage 2 consumes verified artifact")
        expect("Nach der Fähre kamen wir spät an" in intern, "user wording not dropped after opening")
        expect(users[0]["body"].startswith("Nach der Fähre"), "user source is the user message, not the opening")

        stolen = client.post(
            f"/api/journal/days/{empty_day['day']['id']}/conversations",
            headers=other_headers,
            json={"title": "fremd"},
        )
        expect(stolen.status_code == 404, "foreign profile cannot open a conversation")
        stolen_turn = client.post(
            f"/api/journal/conversations/{empty.json()['id']}/turn",
            headers=other_headers,
            json={"body": "Hallo"},
        )
        expect(stolen_turn.status_code == 404, "foreign profile cannot turn into the opening conversation")
        user_login_space = client.post("/api/journal/spaces", headers=other_headers, json={"title": "Ute"})
        user_day = client.post(
            f"/api/journal/spaces/{user_login_space.json()['id']}/days",
            headers=other_headers,
            json={"calendar_date": "2026-08-21"},
        )
        user_open = start_conv(client, other_headers, user_day.json()["day"]["id"])
        expect(user_open.status_code == 200, "non-admin can start their own day")
        expect("trace" not in (user_open.json().get("opening") or {}), "non-admin opening has no trace")
        expect("opening_context" not in (user_open.json().get("opening") or {}), "non-admin opening has no opening_context")
        expect("trace" not in user_open.json(), "non-admin response has no top-level trace")

        start = client.get("/api/journal/continuity", headers=headers)
        expect(start.status_code == 200 and start.json().get("continuable"), "continuable day for the author")
        expect(start.json()["continuable"]["space_id"] == start.json()["continuable"]["space_id"], "continuity names a space")
        other_start = client.get("/api/journal/continuity", headers=other_headers)
        expect(other_start.json()["continuable"]["space_id"] == user_login_space.json()["id"], "continuity is profile-scoped")
        stolen_cont = client.get(f"/api/journal/spaces/{plan_space['id']}", headers=other_headers)
        expect(stolen_cont.status_code == 404, "continuity space stays isolated")


if __name__ == "__main__":
    main()