import json
import logging

from flask import request, jsonify

from routes import app

logger = logging.getLogger(__name__)


@app.route('/efficient-hunter-kazuma', methods=['POST'])
def efficient_hunter_kazuma():
    data = request.get_json()
    logging.info("Data received for evaluation: {}".format(data))
    results = []

    for test_case in data:
        monsters = test_case.get("monsters", [])
        n = len(monsters)
        dp_no_circle = [0] * (n + 2)  # State when Kazuma has no circle prepared
        dp_have_circle = [0] * (n + 2)  # State when Kazuma has a circle prepared

        # Iterate from the end to the beginning
        for t in range(n - 1, -1, -1):
            # State when Kazuma has no circle prepared
            # Option 1: Skip and move to the next time frame without a circle
            option1 = dp_no_circle[t + 1]
            # Option 2: Prepare a circle now, pay the protection cost, and move to the next time frame with a circle
            option2 = -monsters[t] + dp_have_circle[t + 1]
            dp_no_circle[t] = max(option1, option2)

            # State when Kazuma has a circle prepared
            # Option 1: Attack now, earn gold from monsters at time t, and move to the next time frame after recovery without a circle
            if t + 2 < len(dp_no_circle):
                option1 = monsters[t] + dp_no_circle[t + 2]
            else:
                option1 = monsters[t]
            # Option 2: Wait (move to rear), stay in the same state with a circle prepared
            option2 = dp_have_circle[t + 1]
            dp_have_circle[t] = max(option1, option2)

            logging.debug(
                f"Time {t}: dp_no_circle[{t}] = {dp_no_circle[t]}, dp_have_circle[{t}] = {dp_have_circle[t]}"
            )

        max_efficiency = dp_no_circle[0]
        results.append({"efficiency": max_efficiency})
        logging.info("Computed efficiency: {}".format(max_efficiency))

    return jsonify(results)