/**
 * Protocol comparative analysis — the "מה קרה בדיון" panel (#226).
 *
 * `analyze_protocol` compares the ערר hearing protocol against the written
 * pleadings and records, per argument, whether it was strengthened, newly
 * raised, or dropped at the hearing — plus the sharpened legal question and a
 * verbatim evidence quote. This module exposes the read + trigger endpoints.
 */

import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
import { apiRequest } from "./client";
import type { LegalArgumentParty } from "./legal-arguments";

export type ProtocolChangeType = "strengthened" | "newly_raised" | "dropped";

/** Empty string = an unassigned party_role on a verdict row. */
export type ProtocolPartyRole = LegalArgumentParty | "";

export type ProtocolAnalysisRow = {
  id: string;
  case_id: string;
  document_id: string;
  party_role: ProtocolPartyRole;
  change_type: ProtocolChangeType;
  /** The pleaded argument this verdict matched (strengthened/dropped); null for newly_raised. */
  argument_id: string | null;
  argument_title: string;
  summary: string;
  sharpened_question: string;
  evidence_quote: string;
  page_number: number | null;
  created_at?: string;
};

export type ProtocolHeader = {
  hearing_date: string | null;
  protocol_title: string;
  protocol_document_id: string;
  panel_members: string[];
  appellants_present: string[];
  respondents_present: string[];
};

export type ProtocolAnalysisResponse = {
  case_number: string;
  total: number;
  header: ProtocolHeader;
  by_change: Partial<Record<ProtocolChangeType, number>>;
  by_party: Partial<Record<ProtocolPartyRole, ProtocolAnalysisRow[]>>;
  analysis: ProtocolAnalysisRow[];
};

export const protocolAnalysisKeys = {
  all: ["protocol-analysis"] as const,
  byCase: (caseNumber: string) =>
    [...protocolAnalysisKeys.all, caseNumber] as const,
};

export function useProtocolAnalysis(caseNumber: string | undefined) {
  return useQuery({
    queryKey: protocolAnalysisKeys.byCase(caseNumber ?? ""),
    queryFn: ({ signal }) =>
      apiRequest<ProtocolAnalysisResponse>(
        `/api/cases/${caseNumber}/protocol-analysis`,
        { signal },
      ),
    enabled: Boolean(caseNumber),
    staleTime: 10_000,
  });
}

/**
 * The analysis runs on the legal-analyst agent (host-side, where the `claude`
 * CLI lives) — NOT inline in the FastAPI container. The endpoint delegates via
 * a Paperclip wakeup (`queued`), or reports `skipped` when no analyst route is
 * available (the chair can then run the MCP tool manually).
 */
export type AnalyzeProtocolResult =
  | {
      status: "queued";
      sub_issue_id: string;
      analyst_id: string;
      main_issue_id: string;
    }
  | {
      status: "skipped";
      reason: "no_api_key" | "no_analyst" | "no_issue" | string;
      company_id?: string;
    };

export function useAnalyzeProtocol(caseNumber: string | undefined) {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: (documentId?: string) =>
      apiRequest<AnalyzeProtocolResult>(
        `/api/cases/${caseNumber}/analyze-protocol${
          documentId ? `?document_id=${encodeURIComponent(documentId)}` : ""
        }`,
        { method: "POST" },
      ),
    onSuccess: () => {
      if (caseNumber) {
        qc.invalidateQueries({
          queryKey: protocolAnalysisKeys.byCase(caseNumber),
        });
      }
    },
  });
}

export const CHANGE_LABELS_HE: Record<ProtocolChangeType, string> = {
  strengthened: "התחזק בדיון",
  newly_raised: "נטען לראשונה",
  dropped: "נזנח בדיון",
};

export const PROTOCOL_PARTY_LABELS_HE: Record<ProtocolPartyRole, string> = {
  appellant: "עוררים",
  respondent: "משיבים",
  committee: "ועדה מקומית",
  permit_applicant: "מבקשי היתר",
  unknown: "צד לא מזוהה",
  "": "צד לא מסווג",
};

/** Display order for the per-party sections. */
export const PROTOCOL_PARTY_ORDER: ProtocolPartyRole[] = [
  "appellant",
  "committee",
  "respondent",
  "permit_applicant",
  "unknown",
  "",
];