"""V2 API routes - Enhanced implementation with structured results."""
from __future__ import annotations

import time
from flask import Blueprint, jsonify, request
from concurrent.futures import ThreadPoolExecutor

from lawrisk.services.lawrisk_v2_service import search_v2, list_regions
from lawrisk.services.licensing_repo import list_permits_for_region
from lawrisk.services.lawrisk_service import suggest_questions_embed

v2_bp = Blueprint('lawrisk_v2', __name__, url_prefix='/fs-ai-asistant/api/workflow/lawrisk')


@v2_bp.route('/v2', methods=['POST', 'GET'])
def lawrisk_search_v2():
    """V2 search endpoint with structured results."""
    query, debug_flag, top_k_int, _mode, region_filter = _extract_params()

    if not query or not isinstance(query, str):
        return jsonify({"error": "query is required"}), 400

    try:
        t0 = time.time()
        with ThreadPoolExecutor(max_workers=2) as ex:
            fut_subject = ex.submit(search_v2, query, debug_flag, region_filter)
            fut_questions = ex.submit(suggest_questions_embed, query, max(1, top_k_int))

            result_v2 = fut_subject.result()
            rec_questions = fut_questions.result() or []

        risk_subject = result_v2.get("risk_subject", []) if isinstance(result_v2, dict) else []
        found = bool(risk_subject)
        exec_time = int((time.time() - t0) * 1000)

        data = {
            "llmRespond": "" if found else "抱歉，无法检索到相关答案",
            "lawRisk": "",
            "questionExtend": rec_questions,
            "conversationId": "",
            "messageId": "",
            "roundNumber": 0,
            "conversationInfo": {},
            "knowledgeSources": [],
            "totalKnowledgeSources": 0,
            "executionTime": exec_time,
            "workflowStatus": "ok" if found else "no_match",
            "executionSteps": [],
            "costStatistics": {},
            "workflowTrackingId": "",
            "risk_subject": risk_subject,
            "debug": result_v2.get("debug", {}) if (debug_flag and isinstance(result_v2, dict)) else {},
        }
        resp = {"success": True, "message": "OK", "data": data}
        return jsonify(resp)
    except Exception as e:
        print(f"lawrisk_search_v2 error: {e}")
        return jsonify({"success": False, "message": str(e), "data": {}}), 500


@v2_bp.get('/v2/regions')
def lawrisk_regions():
    """Get list of available regions."""
    try:
        regions = list_regions()
        return jsonify({"success": True, "data": {"regions": regions}})
    except Exception as exc:
        print(f"lawrisk_regions error: {exc}")
        return jsonify({"success": False, "message": str(exc)}), 500


@v2_bp.route('/getPermits', methods=['GET', 'POST'])
def lawrisk_get_permits():
    """Get permits for a specific region."""
    if request.method == "GET":
        region_value = request.args.get("region") or request.args.get("region_id")
    else:
        if request.is_json:
            payload = request.get_json(silent=True) or {}
        else:
            payload = request.form.to_dict(flat=True) if request.form else {}
        region_value = payload.get("region") or payload.get("region_id")

    if not region_value or (isinstance(region_value, str) and not region_value.strip()):
        return jsonify({"success": False, "message": "region is required", "data": {}}), 400

    region_token = region_value.strip() if isinstance(region_value, str) else str(region_value)

    try:
        permits = list_permits_for_region(region_token)
        return jsonify({"success": True, "data": {"region": region_token, "permits": permits}})
    except Exception as exc:
        print(f"lawrisk_get_permits error: {exc}")
        return jsonify({"success": False, "message": str(exc)}), 500


def _extract_params():
    """Extract parameters from request."""
    if request.method == "GET":
        query = request.args.get("query") or request.args.get("q") or request.args.get("text")
        debug_flag = request.args.get("debug") in {"1", "true", "yes", "on"}
        top_k = request.args.get("top")
        try:
            top_k_int = int(top_k) if top_k else 5
        except Exception:
            top_k_int = 5
        mode_value = (request.args.get("mode") or "llm").lower()
        region_value = request.args.get("region") or request.args.get("region_id")
        region_list = request.args.getlist("region")
        if region_list and (not region_value or len(region_list) > 1):
            region_value = region_list
    else:
        if request.is_json:
            payload = request.get_json(silent=True) or {}
        else:
            payload = request.form.to_dict(flat=True) if request.form else {}

        query = payload.get("query") or payload.get("q") or payload.get("text")
        debug_flag = str(payload.get("debug", "")).strip().lower() in {"1", "true", "yes", "on"}
        try:
            top_k_int = int(payload.get("top", 5))
        except Exception:
            top_k_int = 5
        mode_value = str(payload.get("mode", "llm")).lower()
        region_value = payload.get("region") or payload.get("region_id")

    return query, debug_flag, top_k_int, mode_value, region_value