package com.solution.rule.utils;

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.solution.rule.domain.ultimately.dto.FireRuleInputRedSubComponentsDTO;
import com.solution.rule.domain.ultimately.vo.FireRuleLauncherConfigurationVO;
import com.solution.rule.domain.ultimately.vo.FireRuleMissionListItemVO;
import com.solution.rule.domain.ultimately.vo.FireRuleMountedWeaponRefVO;
import com.solution.rule.domain.ultimately.vo.FireRuleRedSubComponentsVO;
import com.solution.rule.domain.ultimately.vo.FireRuleRedWeaponEquipmentVO;
import com.solution.rule.domain.ultimately.vo.FireRuleRedWeaponSlotVO;
import com.solution.rule.domain.ultimately.vo.FireRuleSceneTaskNodeVO;
import com.solution.rule.domain.ultimately.vo.FireRuleSceneTaskPayloadVO;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;

/**
 * 将入参中的红方装备 {@code SubComponents}（DTO）转为输出 VO，保持与原始 JSON 结构一致。
 */
public final class FireRuleRedWeaponOutputFillHelper {

    private static final ObjectMapper MAPPER = new ObjectMapper()
            .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

    private FireRuleRedWeaponOutputFillHelper() {
    }

    /**
     * DTO 与 VO 字段/JsonProperty 对齐，通过 Jackson 树转换实现原样输出。
     */
    public static FireRuleRedSubComponentsVO toOutputSubComponents(FireRuleInputRedSubComponentsDTO src) {
        if (src == null) {
            return null;
        }
        return MAPPER.convertValue(src, FireRuleRedSubComponentsVO.class);
    }

    /**
     * 将输出 redWeapons 单项映射为 Tasks 节点（一个装备 -> 一个任务节点）。
     *
     * <p>字段映射约定：</p>
     * <ul>
     *   <li>drawName = Name + \"打击任务\"</li>
     *   <li>side = OwnerForceSide（按你的要求直接复制）</li>
     *   <li>id 优先 EquipmentID，其次 PlatID，最后用 index 兜底</li>
     *   <li>task.payload.weaponId = EquipmentID</li>
     *   <li>task.payload.sideId = OwnerForceSide</li>
     *   <li>missionList：尽量从 SubComponents.weapon[*] 中提取 mountedWeapon/name/number/launcherType</li>
     * </ul>
     */
    public static FireRuleSceneTaskNodeVO toTaskNode(FireRuleRedWeaponEquipmentVO redWeapon, int index) {
        FireRuleSceneTaskNodeVO node = new FireRuleSceneTaskNodeVO();
        if (redWeapon == null) {
            node.setId("redWeaponTask_" + index);
            node.setDrawName("打击任务");
            return node;
        }

        String name = nz(redWeapon.getName());
        node.setName(name);
        node.setDrawName(name + "打击任务");
        node.setId(buildNodeId(redWeapon, index));
        node.setSide(redWeapon.getOwnerForceSide());
        // 按你的要求写死 Tasks 节点的展示字段
        node.setColor("rgb(220, 39, 39)");
        node.setDataType("taskPlane");
        node.setGroupType("tasks");
        node.setShow(true);
        node.setIsSelected(false);
        node.setSort((long) index);

        FireRuleSceneTaskPayloadVO payload = new FireRuleSceneTaskPayloadVO();
        payload.setName(name);
        payload.setWeaponId(redWeapon.getEquipmentId());
        payload.setSideId(redWeapon.getOwnerForceSide());
        payload.setMissionList(buildMissionList(redWeapon));
        node.setTask(payload);
        return node;
    }

    /**
     * 批量转换：redWeapons 有几个就生成几个 Tasks。
     */
    public static List<FireRuleSceneTaskNodeVO> toTaskNodes(List<FireRuleRedWeaponEquipmentVO> redWeapons) {
        if (redWeapons == null || redWeapons.isEmpty()) {
            return Collections.emptyList();
        }
        List<FireRuleSceneTaskNodeVO> list = new ArrayList<>(redWeapons.size());
        for (int i = 0; i < redWeapons.size(); i++) {
            list.add(toTaskNode(redWeapons.get(i), i));
        }
        return list;
    }

    private static List<FireRuleMissionListItemVO> buildMissionList(FireRuleRedWeaponEquipmentVO redWeapon) {
        if (redWeapon == null || redWeapon.getSubComponents() == null || redWeapon.getSubComponents().getWeapon() == null) {
            return null;
        }
        List<FireRuleMissionListItemVO> result = new ArrayList<>();
        for (FireRuleRedWeaponSlotVO slot : redWeapon.getSubComponents().getWeapon()) {
            if (slot == null) {
                continue;
            }
            FireRuleLauncherConfigurationVO cfg = slot.getConfiguration();
            FireRuleMountedWeaponRefVO mounted = cfg != null ? cfg.getMountedWeapon() : null;

            FireRuleMissionListItemVO item = new FireRuleMissionListItemVO();
            // label：优先挂载武器名，其次 deviceName
            String label = mounted != null ? mounted.getName() : null;
            if (isBlank(label)) {
                label = slot.getDeviceName();
            }
            item.setLabel(label);
            item.setNumber(cfg != null ? cfg.getNumber() : null);
            item.setValue(mounted != null ? mounted.getName() : null);
            item.setLauncherType(extractLauncherType(slot.getTwiceModified()));
            result.add(item);
        }
        return result.isEmpty() ? null : result;
    }

    private static String extractLauncherType(Map<String, Object> twiceModified) {
        if (twiceModified == null || twiceModified.isEmpty()) {
            return null;
        }
        Object v = twiceModified.get("launcherType");
        return v == null ? null : String.valueOf(v);
    }

    private static String buildNodeId(FireRuleRedWeaponEquipmentVO redWeapon, int index) {
        String id = nz(redWeapon.getEquipmentId());
        if (!id.isEmpty()) {
            return id;
        }
        id = nz(redWeapon.getPlatId());
        if (!id.isEmpty()) {
            return id;
        }
        return "redWeaponTask_" + index;
    }

    private static String nz(String s) {
        return s == null ? "" : s;
    }

    private static boolean isBlank(String s) {
        return s == null || s.trim().isEmpty();
    }
}