from pathlib import Path
from types import SimpleNamespace

from agentci.domain.models import (
    AgentResult,
    Job,
    JobKind,
    ReviewFinding,
    ReviewReport,
    ReviewSeverity,
    Workflow,
    WorkflowKind,
)
from agentci.workflows.code_review import CodeReviewLoop


def serious_report() -> ReviewReport:
    return ReviewReport(
        summary="Needs work",
        findings=[
            ReviewFinding(
                severity=ReviewSeverity.MAJOR,
                title="Missing check",
                detail="A check is absent.",
                recommendation="Add it.",
            )
        ],
    )


class FakeOpenCode:
    def __init__(self, reports: list[ReviewReport]) -> None:
        self.reports = iter(reports)
        self.reviews = 0
        self.revisions = 0

    async def create_session(self, *_args):
        return "reviewer"

    async def resume(self, **kwargs):
        if kwargs["result_type"] is ReviewReport:
            self.reviews += 1
            return next(self.reports)
        self.revisions += 1
        return AgentResult(summary_markdown=f"revision {self.revisions}", tests=[])


class FakeStorage:
    async def update_job(self, *_args, **_kwargs):
        return None

    async def update_workflow(self, *_args, **_kwargs):
        return None


class FakePrompts:
    def render(self, name, **_kwargs):
        return name


def objects(rounds: int, reports: list[ReviewReport]):
    opencode = FakeOpenCode(reports)
    settings = SimpleNamespace(
        implement_review_rounds=rounds,
        implement_model="model",
        implement_variant="high",
    )
    deps = SimpleNamespace(
        settings=settings,
        opencode=opencode,
        storage=FakeStorage(),
        prompts=FakePrompts(),
        development=SimpleNamespace(description="python"),
    )
    workflow = Workflow(
        id="flow",
        kind=WorkflowKind.IMPLEMENT,
        repo_owner="org",
        repo_name="repo",
        issue_number=1,
        workspace_path=Path("."),
        base_sha="abc",
        primary_session_id="primary",
    )
    job = Job(
        id="job",
        kind=JobKind.IMPLEMENT,
        target_key="target",
        repo_owner="org",
        repo_name="repo",
        issue_number=1,
        pr_number=None,
        requester="alice",
        message="",
        comment_id=1,
    )
    return CodeReviewLoop(deps), opencode, workflow, job  # type: ignore[arg-type]


async def test_stops_after_clean_second_review() -> None:
    clean = ReviewReport(summary="Ready", findings=[])
    loop, opencode, workflow, job = objects(4, [serious_report(), clean])
    _, report = await loop.run(
        job,
        workflow,
        "issue context",
        "canonical plan",
        AgentResult(summary_markdown="initial", tests=[]),
    )
    assert not report.has_serious_findings
    assert opencode.reviews == 2
    assert opencode.revisions == 1


async def test_does_not_make_unreviewed_final_revision() -> None:
    loop, opencode, workflow, job = objects(
        3, [serious_report(), serious_report(), serious_report()]
    )
    _, report = await loop.run(
        job,
        workflow,
        "issue context",
        "canonical plan",
        AgentResult(summary_markdown="initial", tests=[]),
    )
    assert report.has_serious_findings
    assert opencode.reviews == 3
    assert opencode.revisions == 2