using System;
using System.Collections.Generic;
using GeometryTD.DataTable;
using GeometryTD.Definition;
using GeometryTD.UI;
using UnityEngine;
using UnityGameFramework.Runtime;

namespace GeometryTD.CustomComponent
{
    public sealed class CombatSettlementService
    {
        private const int RewardSelectDisplayCount = 3;
        private readonly CombatSettlementCalculator _calculator = new();
        private readonly CombatSettlementCommitter _committer = new();

        public CombatSettlementContext BuildSettlementContext(
            bool didCombatWin,
            DRLevel currentLevel,
            int defeatedEnemyCount,
            CombatRunResourceStore resourceStore)
        {
            return _calculator.BuildSettlementContext(
                didCombatWin,
                currentLevel,
                defeatedEnemyCount,
                resourceStore);
        }

        public void CommitSettlementInventory(CombatSettlementContext settlementContext)
        {
            _committer.CommitSettlementInventory(settlementContext);
        }

        public bool TryPrepareRewardSelection(
            CombatSettlementContext settlementContext,
            int displayPhaseIndex,
            LevelThemeType themeType,
            int runSeed,
            int sequenceIndex,
            ref int nextRewardOrdinal,
            RewardSelectFormUseCase rewardSelectFormUseCase,
            Action<RewardSelectItemRawData> onRewardSelected,
            Action onGiveUp)
        {
            if (settlementContext == null || rewardSelectFormUseCase == null)
            {
                return false;
            }

            IReadOnlyList<TowerCompItemData> candidateItems = GameEntry.InventoryGeneration.BuildRewardCandidates(
                displayPhaseIndex,
                themeType,
                RewardSelectDisplayCount,
                runSeed,
                sequenceIndex,
                ref nextRewardOrdinal);
            if (candidateItems == null || candidateItems.Count <= 0)
            {
                settlementContext.Flags.ShouldOpenRewardSelection = false;
                return false;
            }

            rewardSelectFormUseCase.SetCallbacks(onRewardSelected, onGiveUp);
            rewardSelectFormUseCase.ConfigureRewardCandidates(
                candidateItems,
                displayCount: RewardSelectDisplayCount,
                refreshCost: 0,
                allowRotateOnce: false,
                allowGiveUp: false,
                tipText: "基地满血奖励：请选择 1 个组件");

            RewardSelectFormRawData rawData = rewardSelectFormUseCase.CreateInitialModel();
            if (rawData == null || rawData.RewardItems == null || rawData.RewardItems.Length <= 0)
            {
                settlementContext.Flags.ShouldOpenRewardSelection = false;
                return false;
            }

            settlementContext.Flags.DidEnterRewardSelection = true;
            GameEntry.UIRouter.OpenUI(UIFormType.RewardSelectForm, rawData);
            return true;
        }

        public void ApplySelectedReward(CombatSettlementContext settlementContext, RewardSelectItemRawData selectedReward)
        {
            _committer.ApplySelectedReward(settlementContext, selectedReward);
        }

        public void OpenCombatFinishForm(
            CombatSettlementContext settlementContext,
            CombatFinishFormUseCase combatFinishFormUseCase)
        {
            if (settlementContext == null || combatFinishFormUseCase == null)
            {
                return;
            }

            combatFinishFormUseCase.SetSummary(settlementContext);
            GameEntry.UIRouter.OpenUI(UIFormType.CombatFinishForm);
        }

    }
}