import { describe, expect, it } from "vitest";
import { resolveAddressCoverageEvidence } from "../src/services/addressCoverageEvidencePolicy";

describe("address coverage evidence policy", () => {
  it("marks matched inventory balance replies as full confirmed-balance evidence", () => {
    const contract = resolveAddressCoverageEvidence({
      intent: "inventory_on_hand_as_of_date",
      selectedRecipe: "address_inventory_on_hand_as_of_date_v1",
      filters: {
        as_of_date: "2021-03-31",
        period_from: "2021-03-01",
        period_to: "2021-03-31"
      },
      responseType: "FACTUAL_SUMMARY",
      rowsMatched: 3
    });

    expect(contract.requested_result_mode).toBe("confirmed_balance");
    expect(contract.result_mode).toBe("confirmed_balance");
    expect(contract.coverage_status).toBe("full");
    expect(contract.evidence_strength).toBe("strong");
    expect(contract.balance_confirmed).toBe(true);
    expect(contract.evidence_basis).toBe("matched_rows");
    expect(contract.as_of_date_basis).toBe("explicit_as_of_date");
  });

  it("keeps relative current snapshot basis even when it materializes to today's ISO date", () => {
    const todayIso = new Date().toISOString().slice(0, 10);
    const contract = resolveAddressCoverageEvidence({
      intent: "inventory_on_hand_as_of_date",
      selectedRecipe: "address_inventory_on_hand_as_of_date_v1",
      filters: {
        as_of_date: todayIso
      },
      semanticFrame: {
        scope_kind: "implicit_self_scope",
        anchor_kind: "self_scope",
        anchor_value: null,
        date_scope_kind: "implicit_current",
        date_basis_hint: "implicit_current_snapshot",
        self_scope_detected: true,
        selected_object_scope_detected: false
      },
      responseType: "FACTUAL_LIST",
      rowsMatched: 1
    });

    expect(contract.as_of_date_basis).toBe("implicit_current_snapshot");
    expect(contract.reason_codes).toContain("as_of_date_basis_implicit_current_snapshot");
  });

  it("treats factual exact negatives as full confirmed-balance evidence instead of partial noise", () => {
    const contract = resolveAddressCoverageEvidence({
      intent: "payables_confirmed_as_of_date",
      selectedRecipe: "address_payables_confirmed_as_of_date_v1",
      filters: {
        as_of_date: "2020-03-31",
        period_from: "2020-03-01",
        period_to: "2020-03-31"
      },
      responseType: "FACTUAL_SUMMARY",
      rowsMatched: 0
    });

    expect(contract.result_mode).toBe("confirmed_balance");
    expect(contract.coverage_status).toBe("full");
    expect(contract.balance_confirmed).toBe(true);
    expect(contract.evidence_basis).toBe("exact_negative");
    expect(contract.reason_codes).toContain("evidence_basis_exact_negative");
  });

  it("keeps heuristic candidate answers partial even when rows exist", () => {
    const contract = resolveAddressCoverageEvidence({
      intent: "open_items_by_counterparty_or_contract",
      selectedRecipe: "address_open_items_by_party_or_contract_v1",
      filters: {
        account: "60",
        period_from: "2022-08-01",
        period_to: "2022-08-31"
      },
      responseType: "FACTUAL_LIST",
      rowsMatched: 4
    });

    expect(contract.requested_result_mode).toBe("confirmed_balance");
    expect(contract.result_mode).toBe("confirmed_balance");
    expect(contract.coverage_status).toBe("partial");
    expect(contract.evidence_strength).toBe("medium");
    expect(contract.balance_confirmed).toBe(false);
  });

  it("marks limited replies as blocked or partial according to the effective result mode", () => {
    const confirmed = resolveAddressCoverageEvidence({
      intent: "inventory_on_hand_as_of_date",
      selectedRecipe: "address_inventory_on_hand_as_of_date_v1",
      filters: {
        as_of_date: "2021-03-31"
      },
      responseType: "LIMITED_WITH_REASON",
      rowsMatched: 0
    });
    const heuristic = resolveAddressCoverageEvidence({
      intent: "list_open_contracts",
      selectedRecipe: "address_list_open_contracts_v1",
      filters: {},
      responseType: "LIMITED_WITH_REASON",
      rowsMatched: 0
    });

    expect(confirmed.coverage_status).toBe("blocked");
    expect(confirmed.evidence_basis).toBe("limited_response");
    expect(heuristic.coverage_status).toBe("partial");
    expect(heuristic.result_mode).toBe("heuristic_candidates");
  });
});