"""Tests for fable_*_project tools."""
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

from scribe.mcp.tools.projects import (
    list_projects, get_project, create_project,
    update_project, enter_project,
)
from tests.helpers import FakeMCP, fake_project


pytestmark = pytest.mark.usefixtures("_bind_user")


@pytest.fixture(autouse=True)
def _no_systems():
    """enter_project now surfaces the project's Systems as the tagging
    vocabulary (#2546). These are tool-layer unit tests with no database, so
    the lookup is stubbed to the common case — a project with none. The
    populated shape is asserted in its own test below.
    """
    with patch("scribe.mcp.tools.projects.systems_svc.list_systems",
               AsyncMock(return_value=[])):
        yield


@pytest.fixture(autouse=True)
def _no_coverage():
    """enter_project also reads the pattern-coverage cache (#2692) — same
    deal: no database here, stub the common case (nothing computed). The
    populated line is asserted in tests/test_pattern_coverage.py.
    """
    with patch("scribe.mcp.tools.projects.coverage_svc.cached_coverage",
               AsyncMock(return_value=None)):
        yield


@pytest.fixture(autouse=True)
def _no_background_seed():
    """enter_project now fire-and-forgets a coverage self-seed (#2802). These
    are no-database unit tests, so the spawn is stubbed out; the firing shape
    has its own test below."""
    with patch("scribe.mcp.tools.projects.spawn") as mock:
        yield mock


@pytest.fixture(autouse=True)
def _no_bootstrap():
    """With _no_systems stubbing an empty vocabulary, every test here reaches
    the zero-Systems branch, whose bootstrap ask (#2683) counts the project's
    records — a database read. Stub the common case (young project, no ask);
    the firing shape has its own test below.
    """
    with patch("scribe.mcp.tools.projects.systems_tools.bootstrap_systems_ask",
               AsyncMock(return_value=None)) as mock:
        yield mock


@pytest.mark.asyncio
async def test_list_projects_wraps_in_dict():
    rows = [fake_project(id=1), fake_project(id=2)]
    with patch(
        "scribe.mcp.tools.projects.projects_svc.list_projects",
        AsyncMock(return_value=rows),
    ):
        out = await list_projects()
    assert len(out["projects"]) == 2


@pytest.mark.asyncio
async def test_get_project_enriches_with_milestone_summary():
    p = fake_project(id=5, title="found")
    milestone_summary = [{"id": 10, "title": "MS", "task_count": 3}]
    applicable_payload = {
        "rules": [], "truncated": False, "subscribed_rulebooks": [],
    }
    with patch(
        "scribe.mcp.tools.projects.projects_svc.get_project",
        AsyncMock(return_value=p),
    ), patch(
        "scribe.mcp.tools.projects.milestones_svc.get_project_milestone_summary",
        AsyncMock(return_value=milestone_summary),
    ), patch(
        "scribe.mcp.tools.projects.rulebooks_svc.get_applicable_rules",
        AsyncMock(return_value=applicable_payload),
    ):
        out = await get_project(project_id=5)
    assert out["id"] == 5
    assert out["milestone_summary"] == milestone_summary


@pytest.mark.asyncio
async def test_get_project_includes_applicable_rules_and_subscribed_rulebooks():
    """The augmented get_project response includes applicable_rules and
    subscribed_rulebooks pulled from services/rulebooks.get_applicable_rules.
    """
    p = fake_project(id=3, title="Fabled Assistant")
    milestone_summary = []
    applicable_payload = {
        "rules": [
            {"id": 1, "title": "dev is home",
             "statement": "Work directly on dev",
             "topic_title": "git-workflow",
             "rulebook_title": "FabledSword family"},
        ],
        "truncated": False,
        "subscribed_rulebooks": [{"id": 1, "title": "FabledSword family"}],
    }
    with patch(
        "scribe.mcp.tools.projects.projects_svc.get_project",
        AsyncMock(return_value=p),
    ), patch(
        "scribe.mcp.tools.projects.milestones_svc.get_project_milestone_summary",
        AsyncMock(return_value=milestone_summary),
    ), patch(
        "scribe.mcp.tools.projects.rulebooks_svc.get_applicable_rules",
        AsyncMock(return_value=applicable_payload),
    ):
        out = await get_project(project_id=3)
    assert out["applicable_rules"][0]["title"] == "dev is home"
    assert out["subscribed_rulebooks"] == [{"id": 1, "title": "FabledSword family"}]
    assert out["applicable_rules_truncated"] is False


@pytest.mark.asyncio
async def test_get_project_raises_when_not_found():
    with patch(
        "scribe.mcp.tools.projects.projects_svc.get_project",
        AsyncMock(return_value=None),
    ):
        with pytest.raises(ValueError, match="project 999 not found"):
            await get_project(project_id=999)


@pytest.mark.asyncio
async def test_create_project_passes_color_empty_as_none():
    p = fake_project()
    mock = AsyncMock(return_value=p)
    with patch("scribe.mcp.tools.projects.projects_svc.create_project", mock):
        await create_project(title="P", color="")
    assert mock.call_args.kwargs["color"] is None


@pytest.mark.asyncio
async def test_update_project_only_sends_non_default_fields():
    p = fake_project()
    mock = AsyncMock(return_value=p)
    with patch("scribe.mcp.tools.projects.projects_svc.update_project", mock):
        await update_project(project_id=1, status="archived")
    args, kwargs = mock.call_args
    assert args == (7, 1)
    assert kwargs == {"status": "archived"}


@pytest.mark.asyncio
async def test_update_project_raises_when_not_found():
    with patch(
        "scribe.mcp.tools.projects.projects_svc.update_project",
        AsyncMock(return_value=None),
    ):
        with pytest.raises(ValueError, match="project 999 not found"):
            await update_project(project_id=999, title="x")


@pytest.mark.asyncio
async def test_enter_project_composes_full_context():
    """enter_project pulls project + rules + milestone summary + open tasks +
    recent notes in one composed call."""
    p = fake_project(id=5, title="P")
    applicable_payload = {
        "rules": [{"id": 1, "title": "r1", "statement": "s",
                   "topic_title": "t", "rulebook_title": "rb"}],
        "project_rules": [{"id": 99, "title": "pr1", "statement": "ps"}],
        "truncated": False,
        "subscribed_rulebooks": [{"id": 2, "title": "rb"}],
    }
    milestone_summary = [{"id": 10, "title": "MS", "task_count": 3}]

    task1 = MagicMock()
    task1.id = 100; task1.title = "T1"; task1.status = "in_progress"
    task1.priority = "high"; task1.task_kind = "work"; task1.milestone_id = 10
    note1 = MagicMock()
    note1.id = 200; note1.title = "N1"
    note1.updated_at = None  # avoids datetime mocking

    with patch(
        "scribe.mcp.tools.projects.projects_svc.get_project",
        AsyncMock(return_value=p),
    ), patch(
        "scribe.mcp.tools.projects.rulebooks_svc.get_applicable_rules",
        AsyncMock(return_value=applicable_payload),
    ), patch(
        "scribe.mcp.tools.projects.milestones_svc.get_project_milestone_summary",
        AsyncMock(return_value=milestone_summary),
    ), patch(
        "scribe.mcp.tools.projects.notes_svc.list_notes",
        AsyncMock(side_effect=[([task1], 1), ([note1], 1)]),
    ):
        out = await enter_project(project_id=5)

    assert out["project"]["id"] == 5
    assert out["milestone_summary"] == milestone_summary
    assert out["applicable_rules"][0]["title"] == "r1"
    assert out["project_rules"][0]["id"] == 99
    assert out["subscribed_rulebooks"] == [{"id": 2, "title": "rb"}]
    assert out["open_tasks"][0]["id"] == 100
    assert out["open_tasks"][0]["status"] == "in_progress"
    assert out["recent_notes"][0]["id"] == 200
    # No design system on this project -> the key is present and null, not
    # absent. A caller that has to distinguish "no key" from "no system" will
    # eventually get it wrong.
    assert out["design_system"] is None
    # No Systems -> present-and-empty, NOT absent: this key is the tagging
    # vocabulary, and "this project has no named areas yet" is information the
    # create-the-System instruction acts on.
    assert out["systems"] == []
    # Young project, no bootstrap ask -> the key is ABSENT, not null: it exists
    # to be acted on, and a key that usually says null gets skipped (#2483).
    assert "systems_bootstrap" not in out


@pytest.mark.asyncio
async def test_enter_project_surfaces_the_systems_vocabulary():
    """The tagging instruction is only executable if the vocabulary is in
    front of the agent when it writes. It never was, and tagging stopped three
    days after the feature landed — one System, nothing tagged since July 28
    (#2546's audit). Trimmed to id/name/first-line: it rides on every session
    start, and the full charter is get_system's job."""
    p = fake_project(id=5)
    sys1 = MagicMock()
    sys1.id = 3
    sys1.name = "retrieval"
    sys1.description = "Embeddings, ranking, auto-inject.\nLong detail below."

    with patch(
        "scribe.mcp.tools.projects.projects_svc.get_project",
        AsyncMock(return_value=p),
    ), patch(
        "scribe.mcp.tools.projects.rulebooks_svc.get_applicable_rules",
        AsyncMock(return_value={"rules": [], "truncated": False,
                                "subscribed_rulebooks": []}),
    ), patch(
        "scribe.mcp.tools.projects.milestones_svc.get_project_milestone_summary",
        AsyncMock(return_value=[]),
    ), patch(
        "scribe.mcp.tools.projects.notes_svc.list_notes",
        AsyncMock(side_effect=[([], 0), ([], 0)]),
    ), patch(
        "scribe.mcp.tools.projects.systems_svc.list_systems",
        AsyncMock(return_value=[sys1]),
    ):
        out = await enter_project(project_id=5)

    assert out["systems"] == [
        {"id": 3, "name": "retrieval",
         "description": "Embeddings, ranking, auto-inject."}
    ]


def _enter_project_stubs(p):
    """The four patches every enter_project test repeats, as one context list."""
    return [
        patch("scribe.mcp.tools.projects.projects_svc.get_project",
              AsyncMock(return_value=p)),
        patch("scribe.mcp.tools.projects.rulebooks_svc.get_applicable_rules",
              AsyncMock(return_value={"rules": [], "truncated": False,
                                      "subscribed_rulebooks": []})),
        patch("scribe.mcp.tools.projects.milestones_svc.get_project_milestone_summary",
              AsyncMock(return_value=[])),
        patch("scribe.mcp.tools.projects.notes_svc.list_notes",
              AsyncMock(side_effect=[([], 0), ([], 0)])),
    ]


@pytest.mark.asyncio
async def test_enter_project_carries_the_bootstrap_ask_when_it_fires():
    """The arrival-moment half of #2683: a mature zero-Systems project greets
    the session with the concrete bootstrap ask, before it is deep in a task —
    the moment minting a starter vocabulary is cheapest."""
    import contextlib

    ask = "This project has 282 records and NO Systems modelled — ..."
    with contextlib.ExitStack() as stack:
        for cm in _enter_project_stubs(fake_project(id=5)):
            stack.enter_context(cm)
        stack.enter_context(patch(
            "scribe.mcp.tools.projects.systems_tools.bootstrap_systems_ask",
            AsyncMock(return_value=ask),
        ))
        out = await enter_project(project_id=5)
    assert out["systems_bootstrap"] == ask


@pytest.mark.asyncio
async def test_enter_project_never_asks_bootstrap_once_a_vocabulary_exists(
    _no_bootstrap,
):
    """The ask is self-retiring: the first System ends it — enter_project must
    not even evaluate it once the vocabulary is non-empty."""
    import contextlib

    sys1 = MagicMock()
    sys1.id = 3; sys1.name = "retrieval"; sys1.description = ""
    with contextlib.ExitStack() as stack:
        for cm in _enter_project_stubs(fake_project(id=5)):
            stack.enter_context(cm)
        stack.enter_context(patch(
            "scribe.mcp.tools.projects.systems_svc.list_systems",
            AsyncMock(return_value=[sys1]),
        ))
        out = await enter_project(project_id=5)
    assert "systems_bootstrap" not in out
    _no_bootstrap.assert_not_awaited()


@pytest.mark.asyncio
async def test_enter_project_fires_the_coverage_seed_on_the_owner(
    _no_background_seed,
):
    """The arrival self-seed (#2802): entering spawns refresh_if_stale on the
    project OWNER's id with the cache read the enter already did — fire and
    forget, so a missing ledger seeds itself without the UI button, and the
    enter stays fast."""
    import contextlib

    project = fake_project(id=5)
    project.user_id = 42  # explicit: the OWNER, not the caller (ctx uid=7)
    with contextlib.ExitStack() as stack:
        for cm in _enter_project_stubs(project):
            stack.enter_context(cm)
        seed = stack.enter_context(patch(
            "scribe.mcp.tools.projects.coverage_svc.refresh_if_stale",
            MagicMock(return_value=object()),
        ))
        await enter_project(project_id=5)
    seed.assert_called_once_with(42, 5, cached=None)
    _no_background_seed.assert_called_once()
    assert _no_background_seed.call_args.kwargs["site"] == "enter_project.coverage_seed"


@pytest.mark.asyncio
async def test_enter_project_hands_back_the_design_system_when_the_project_has_one():
    """The handshake is where an agent learns what binds it, and a design
    system binds the same way a rule does. Before this it was reachable only by
    an agent that already knew to call resolve_design_system — so the standards
    were present in the store and absent from the work."""
    p = fake_project(id=5, design_system_id=9)
    design = {"id": 9, "title": "App kit", "guidance": [{"title": "House"}],
              "token_count": 95, "token_groups": ["surface"],
              "inherits_from": ["House"], "description": ""}

    with patch(
        "scribe.mcp.tools.projects.projects_svc.get_project",
        AsyncMock(return_value=p),
    ), patch(
        "scribe.mcp.tools.projects.rulebooks_svc.get_applicable_rules",
        AsyncMock(return_value={"rules": [], "truncated": False,
                                "subscribed_rulebooks": []}),
    ), patch(
        "scribe.mcp.tools.projects.milestones_svc.get_project_milestone_summary",
        AsyncMock(return_value=[]),
    ), patch(
        "scribe.mcp.tools.projects.notes_svc.list_notes",
        AsyncMock(side_effect=[([], 0), ([], 0)]),
    ), patch(
        "scribe.mcp.tools.projects.design_systems_svc.design_context",
        AsyncMock(return_value=design),
    ) as ctx:
        out = await enter_project(project_id=5)

    assert out["design_system"]["token_count"] == 95
    assert out["design_system"]["inherits_from"] == ["House"]
    assert ctx.await_args.args == (7, 9)   # caller's id, the project's system


@pytest.mark.asyncio
async def test_enter_project_raises_when_project_not_found():
    with patch(
        "scribe.mcp.tools.projects.projects_svc.get_project",
        AsyncMock(return_value=None),
    ):
        with pytest.raises(ValueError, match="project 999 not found"):
            await enter_project(project_id=999)


def test_enter_project_registered_in_register():
    """register(mcp) registers enter_project alongside the existing tools."""
    from scribe.mcp.tools.projects import register
    mcp = FakeMCP()

    register(mcp)
    assert "enter_project" in mcp.names


# --- milestone 297: the inception doors ---------------------------------------


@pytest.mark.asyncio
async def test_create_project_without_inception_args_stays_undecided():
    p = fake_project(id=5, title="P", inception=None)
    with patch("scribe.mcp.tools.projects.projects_svc.create_project", AsyncMock(return_value=p)), \
         patch("scribe.mcp.tools.projects.inception_svc.decide", AsyncMock()) as decide:
        out = await create_project(title="P")
    decide.assert_not_awaited()
    assert "inception_hint" in out and "inception_effects" not in out


@pytest.mark.asyncio
async def test_create_project_with_inception_args_decides_via_mcp():
    p = fake_project(id=5, title="P", inception=None)
    decided = {"inception": {"via": "mcp", "choices": {}}, "effects": {"systems_seeded": []}}
    with patch("scribe.mcp.tools.projects.projects_svc.create_project", AsyncMock(return_value=p)), \
         patch("scribe.mcp.tools.projects.inception_svc.decide", AsyncMock(return_value=decided)) as decide:
        out = await create_project(title="P", exclude_always_on_rulebooks=[1], design_system_id=-1, seed_systems=True)
    kw = decide.await_args.kwargs
    assert decide.await_args.args[1] == 5 and kw["via"] == "mcp"
    assert kw["choices"] == {"exclude_always_on_rulebooks": [1], "subscribe_rulebooks": [],
                             "design_system_id": None, "seed_systems": True}
    assert out["inception"]["via"] == "mcp" and "inception_effects" in out


@pytest.mark.asyncio
async def test_decide_project_inception_tool_records_an_inherit_all_decision_when_given_nothing():
    from scribe.mcp.tools.projects import decide_project_inception
    decided = {"inception": {"via": "mcp"}, "effects": {}}
    with patch("scribe.mcp.tools.projects.inception_svc.decide", AsyncMock(return_value=decided)) as decide:
        out = await decide_project_inception(project_id=5)
    assert decide.await_args.kwargs["choices"] == {}
    assert out["project_id"] == 5 and out["inception"]["via"] == "mcp"


@pytest.mark.asyncio
async def test_enter_project_carries_the_inception_ask_only_for_an_undecided_own_project():
    applicable = {"rules": [], "project_rules": [], "truncated": False,
                  "subscribed_rulebooks": [], "excluded_always_on": []}
    ask = {"defaults": {}, "ask": "decide", "call": "decide_project_inception(...)"}

    async def run(project):
        with patch("scribe.mcp.tools.projects.projects_svc.get_project", AsyncMock(return_value=project)), \
             patch("scribe.mcp.tools.projects.rulebooks_svc.get_applicable_rules", AsyncMock(return_value=applicable)), \
             patch("scribe.mcp.tools.projects.milestones_svc.get_project_milestone_summary", AsyncMock(return_value=[])), \
             patch("scribe.mcp.tools.projects.notes_svc.list_notes", AsyncMock(side_effect=[([], 0), ([], 0)])), \
             patch("scribe.mcp.tools.projects.systems_svc.list_systems", AsyncMock(return_value=[])), \
             patch("scribe.mcp.tools.projects.systems_tools.bootstrap_systems_ask", AsyncMock(return_value=None)), \
             patch("scribe.mcp.tools.projects.inception_svc.inception_ask", AsyncMock(return_value=ask)) as asked:
            return await enter_project(project_id=5), asked

    # Own + undecided → the ask rides along.
    out, asked = await run(fake_project(id=5, title="P", user_id=7, inception=None))
    assert out["inception"] == ask and asked.await_count == 1
    # Decided → absent, and the ask is not even built.
    out, asked = await run(fake_project(id=5, title="P", user_id=7, inception={"via": "legacy"}))
    assert "inception" not in out and asked.await_count == 0
    # Someone else's (shared) project, undecided → not this caller's to decide.
    out, asked = await run(fake_project(id=5, title="P", user_id=8, inception=None))
    assert "inception" not in out and asked.await_count == 0


def test_inception_routes_and_tool_are_registered():
    from scribe.app import create_app
    from scribe.mcp.server import build_mcp_server
    rules = {r.rule for r in create_app().url_map.iter_rules()}
    assert "/api/projects/<int:project_id>/inception" in rules
    assert "/api/projects/<int:project_id>/inception/defaults" in rules
    mcp = build_mcp_server()
    assert mcp._tool_manager.get_tool("decide_project_inception") is not None
    tool = mcp._tool_manager.get_tool("create_project")
    for name in ("exclude_always_on_rulebooks", "subscribe_rulebooks", "design_system_id", "seed_systems"):
        assert name in tool.parameters.get("properties", {}), name

