"""Several projects on the new loop (M1.4, D8): intake from each project's
repository, each item working in its own project's workspace and publishing
to its own repository, issue numbers told apart, label defaults, and parking
across projects. Real git on the throwaway build host; fake Gitea per repo."""

import io
from pathlib import Path
from typing import Any

import pytest
from test_loop_milestones import DON, Forge, ScriptedModel, call, git, make_world

from nisse_core.conversation.transport import InMemoryTransport
from nisse_core.execution.ssh import SSHHost
from nisse_core.loop.driver import Driver
from nisse_core.oplog import OpLog
from nisse_core.state.cancel import Cancel
from nisse_core.state.worker import InlineWorker
from nisse_dev.loop.agent import LoopAgent, Project
from nisse_dev.loop.items import ANSWER, GO_AHEAD, MERGE, item_for_issue, loop_of
from nisse_dev.tools import Workspace

REPOS = {"alpha": "don/alpha", "beta": "don/beta"}


class Router:
    """One Gitea for the agent, routing each call to its repository's fake."""

    def __init__(self, forges: dict[str, Forge]) -> None:
        self.forges = forges

    def __getattr__(self, name: str) -> Any:
        def call(repo: str, *args: Any, **kwargs: Any) -> Any:
            return getattr(self.forges[repo], name)(repo, *args, **kwargs)

        return call


@pytest.fixture
def worlds(ssh_host: SSHHost, tmp_path: Path) -> dict[str, dict[str, Any]]:
    alpha = make_world(ssh_host, tmp_path / "alpha", repo_name=REPOS["alpha"])
    beta = make_world(
        ssh_host, tmp_path / "beta", store=alpha["store"], repo_name=REPOS["beta"]
    )
    return {"alpha": alpha, "beta": beta}


def agent_for(
    worlds: dict[str, dict[str, Any]],
    model: ScriptedModel,
    labels: dict[str, tuple[str, ...]] | None = None,
) -> tuple[LoopAgent, InMemoryTransport]:
    transport = InMemoryTransport()
    cancel = Cancel()
    router = Router({REPOS[n]: w["forge"] for n, w in worlds.items()})
    projects = [
        Project(
            name=n,
            repo=REPOS[n],
            workspace=Workspace(w["host"], w["repo"].root, timeout_s=30),
            milestones=w["milestones"],
            labels=(labels or {}).get(n, ()),
        )
        for n, w in worlds.items()
    ]
    for w in worlds.values():
        w["milestones"]._gitea = router  # publishing goes through the router too
    agent = LoopAgent(
        worlds["alpha"]["store"],
        transport,
        router,  # type: ignore[arg-type]
        projects=projects,
        account="nisse-dev",
        operators={DON},
        gitea_operators={"don"},
        driver=Driver(model, "m", cancel=cancel),  # type: ignore[arg-type]
        worker=InlineWorker(),
        cancel=cancel,
        oplog=OpLog("nisse-dev", io.StringIO()),
    )
    transport.on_message(agent.on_message)
    return agent, transport


def item(worlds: dict[str, Any], project: str) -> Any:
    found = item_for_issue(worlds["alpha"]["store"], 14, project)
    assert found is not None
    return found


def say(transport: InMemoryTransport, worlds: Any, project: str, text: str) -> None:
    transport.receive(DON, text, thread=loop_of(item(worlds, project)).thread)


def restate(name: str) -> list[Any]:
    return [call("restate", text=f"{name}: add count_words")]


def work(path: str) -> list[Any]:
    return [
        call("start_milestone", name=path),
        call("write_file", path=path, content=f"# {path}\n"),
        call("finish_milestone", summary=path, final="yes"),
    ]


def test_both_projects_issues_are_taken_and_told_apart(worlds: Any) -> None:
    # Both forges have an issue #14.
    agent, transport = agent_for(worlds, ScriptedModel(restate("a"), restate("b")))
    agent.intake()
    a, b = item(worlds, "alpha"), item(worlds, "beta")
    assert (a.scope, b.scope) == ("alpha", "beta")
    said = [m.text for m in transport.outbound]
    assert any(t.startswith("Queued don/alpha#14") for t in said)
    assert any(t.startswith("Queued don/beta#14") for t in said)
    status = agent.status()
    assert "alpha#14 Add count_words" in status and "beta#14 Add count_words" in status


def test_each_item_works_and_publishes_in_its_own_project(worlds: Any) -> None:
    model = ScriptedModel(restate("a"), restate("b"), work("a.py"), work("b.py"))
    agent, transport = agent_for(worlds, model)
    agent.intake()
    say(transport, worlds, "alpha", "go")
    say(transport, worlds, "beta", "go")
    fa, fb = worlds["alpha"]["forge"], worlds["beta"]["forge"]
    [pa], [pb] = fa.prs, fb.prs
    assert fa.files(pa) == ["a.py"] and fb.files(pb) == ["b.py"]
    assert fa.prs[pa]["head"].startswith(item(worlds, "alpha").id)
    assert fb.prs[pb]["head"].startswith(item(worlds, "beta").id)
    # Each workspace has only its own project's work.
    assert not (worlds["alpha"]["repo"].root / "b.py").exists()
    assert loop_of(item(worlds, "beta")).wait == MERGE


def test_a_bare_number_in_two_projects_is_asked_about(worlds: Any) -> None:
    model = ScriptedModel(restate("a"), restate("b"), work("b.py"))
    agent, transport = agent_for(worlds, model)
    agent.intake()
    transport.receive(DON, "go #14")
    asked = transport.outbound[-1].text
    assert "open in more than one project" in asked
    assert "go alpha#14" in asked and "go beta#14" in asked
    assert not loop_of(item(worlds, "alpha")).started
    transport.receive(DON, "go beta#14")
    assert loop_of(item(worlds, "beta")).started
    assert not loop_of(item(worlds, "alpha")).started


def test_do_next_names_a_project(worlds: Any) -> None:
    agent, transport = agent_for(worlds, ScriptedModel(restate("a"), restate("b")))
    agent.intake()
    transport.receive(DON, "do #14 next")
    assert "do alpha#14 next or do beta#14 next" in transport.outbound[-1].text
    transport.receive(DON, "do beta#14 next")
    assert "beta#14 goes first" in transport.outbound[-1].text


def test_a_projects_label_defaults_steer_its_items(worlds: Any) -> None:
    model = ScriptedModel(
        [call("ask_human", question="what's it for?")],  # alpha: discuss first
        restate("b"),
    )
    agent, _ = agent_for(worlds, model, labels={"alpha": ("discuss",)})
    agent.intake()
    assert loop_of(item(worlds, "alpha")).labels == ("discuss",)
    assert loop_of(item(worlds, "alpha")).wait == ANSWER
    assert loop_of(item(worlds, "beta")).wait == GO_AHEAD


def test_switching_projects_parks_the_other_projects_work(worlds: Any) -> None:
    model = ScriptedModel(
        restate("a"),
        restate("b"),
        [  # alpha: half done, then a question
            call("start_milestone", name="a"),
            call("write_file", path="half.py", content="H = 1\n"),
            call("ask_human", question="one more thing?"),
        ],
        work("b.py"),  # beta runs meanwhile
    )
    agent, transport = agent_for(worlds, model)
    agent.intake()
    say(transport, worlds, "alpha", "go")
    say(transport, worlds, "beta", "go")
    bare = ["--git-dir", str(worlds["alpha"]["bare"])]
    parked = f"refs/heads/{item(worlds, 'alpha').id}-parked"
    assert git(*bare, "show", f"{parked}^3:half.py") == "H = 1"