from __future__ import annotations

from dataclasses import dataclass

from control_plane.agents.models import AgentVersion
from control_plane.projects.models import Task
from control_plane.verification.models import Review


@dataclass(frozen=True)
class ReviewDecision:
    status: str
    findings: list[dict[str, object]]
    summary: str


class Reviewer:
    def review(self, task: Task, reviewer: AgentVersion, diff: str, test_status: str) -> Review:
        findings: list[dict[str, object]] = []
        status = "PASS"
        if test_status != "PASS":
            status = "REWORK_REQUIRED"
            findings.append({"type": "tests_failed", "severity": "high", "message": "Deterministic tests failed"})
        if not diff.strip():
            status = "REJECTED"
            findings.append({"type": "empty_diff", "severity": "high", "message": "No implementation diff exists"})
        goal = task.goal.lower()
        expects_health_endpoint = "/health" in goal or "health endpoint" in goal or "health route" in goal
        if expects_health_endpoint and "/health" not in diff and "path('health'" not in diff and 'path("health"' not in diff:
            status = "REWORK_REQUIRED"
            findings.append({"type": "missing_health_route", "severity": "high", "message": "Diff does not add /health"})
        review = Review.objects.create(
            task=task,
            reviewer=reviewer,
            status=status,
            findings=findings,
            summary="Implementation quality accepted" if status == "PASS" else "Reviewer requested rework",
        )
        return review