"""Runs multiple verifiers and merges results into one VerificationResult."""
from __future__ import annotations

from typing import List

from ..core.interfaces import Verifier
from ..core.types import Query, Retrieved, VerificationAlert, VerificationResult


class CompositeVerifier:
    name = "composite"

    def __init__(self, verifiers: List[Verifier]) -> None:
        self.verifiers = list(verifiers)

    def verify(
        self,
        query: Query,
        answer: str,
        context: List[Retrieved],
    ) -> VerificationResult:
        alerts: List[VerificationAlert] = []
        citation = 0.0
        faithful = 0.0
        struct_ok = True
        passes: List[bool] = []

        for v in self.verifiers:
            res = v.verify(query, answer, context)
            alerts.extend(res.alerts)
            citation = max(citation, res.citation_coverage)
            faithful = max(faithful, res.faithfulness)
            struct_ok = struct_ok and res.structure_match
            passes.append(res.passed)

        return VerificationResult(
            passed=all(passes),
            alerts=alerts,
            citation_coverage=citation,
            faithfulness=faithful,
            structure_match=struct_ok,
        )