package label_relationship

import (
	"context"
	"github.com/suyuan32/simple-admin-common/msg/errormsg"
	"wechat-api/ent"
	"wechat-api/ent/contact"
	"wechat-api/ent/custom_types"
	"wechat-api/ent/labelrelationship"
	"wechat-api/ent/messagerecords"
	"wechat-api/ent/soptask"
	"wechat-api/internal/svc"
	"wechat-api/internal/types"
	"wechat-api/internal/utils/dberrorhandler"

	"github.com/zeromicro/go-zero/core/logx"
)

type UpdateLabelRelationshipsLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewUpdateLabelRelationshipsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *UpdateLabelRelationshipsLogic {
	return &UpdateLabelRelationshipsLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx}
}

func (l *UpdateLabelRelationshipsLogic) UpdateLabelRelationships(req *types.LabelRelationshipsInfo) (resp *types.BaseMsgResp, err error) {
	// 获取联系人信息
	c, err := l.svcCtx.DB.Contact.Query().Where(contact.ID(*req.ContactId)).Only(l.ctx)
	// 获取联系人当前已关联的标签
	currentLabelRelationships, err := l.svcCtx.DB.LabelRelationship.Query().Where(labelrelationship.ContactID(*req.ContactId)).All(l.ctx)
	if err != nil {
		return nil, dberrorhandler.DefaultEntError(l.Logger, err, req)
	}

	// 提取当前标签ID
	var currentLabelIds []uint64
	for _, relationship := range currentLabelRelationships {
		currentLabelIds = append(currentLabelIds, relationship.LabelID)
	}

	// 对比新旧标签ID，找出需要新增和移除的标签
	addLabelIds, removeLabelIds := compareLabelIds(req.LabelIds, currentLabelIds)

	// 如果 req.UpdateType 为空，或 req.UpdateType 的值为 “all” 时
	if req.UpdateType == nil || *req.UpdateType == "all" {
		// 删除需要移除的标签关系
		for _, id := range removeLabelIds {
			_, err := l.svcCtx.DB.LabelRelationship.
				Delete().
				Where(
					labelrelationship.ContactID(*req.ContactId),
					labelrelationship.LabelID(id),
				).
				Exec(l.ctx)
			if err != nil {
				return nil, dberrorhandler.DefaultEntError(l.Logger, err, req)
			}
		}
	}

	// 创建需要新增的标签关系
	for _, id := range addLabelIds {
		_, _ = l.svcCtx.DB.LabelRelationship.Create().
			SetLabelID(id).
			SetContactID(*req.ContactId).
			Save(l.ctx)
		//if err != nil {
		//	return nil, dberrorhandler.DefaultEntError(l.Logger, err, req)
		//}
	}

	currentLabelIds = req.LabelIds

	// 获取所有 status 为 3 且 bot_wxid_list 包含 c.wx_wxid 的 sop_task
	sopTasks, err := l.svcCtx.DB.SopTask.Query().Where(soptask.Status(3)).All(l.ctx)
	if err != nil {
		return nil, dberrorhandler.DefaultEntError(l.Logger, err, req)
	}

	var filteredSopTasks []*ent.SopTask
	for _, task := range sopTasks {
		for _, botWxid := range task.BotWxidList {
			if botWxid == c.WxWxid {
				filteredSopTasks = append(filteredSopTasks, task)
				break
			}
		}
	}

	// 获取所有 filteredSopTasks 的 sop_stages
	var sopStages []*ent.SopStage
	for _, task := range filteredSopTasks {
		stages, err := task.QueryTaskStages().All(l.ctx)
		if err != nil {
			return nil, dberrorhandler.DefaultEntError(l.Logger, err, req)
		}
		sopStages = append(sopStages, stages...)
	}

	err = l.AddLabelRelationships(sopStages, *c, currentLabelIds)
	if err != nil {
		return nil, err
	}

	return &types.BaseMsgResp{
		Code: 0,
		Msg:  errormsg.Success,
	}, nil
}

func (l *UpdateLabelRelationshipsLogic) AddLabelRelationships(sopStages []*ent.SopStage, contact ent.Contact, currentLabelIds []uint64) (err error) {

	// 遍历 sop_stages，找出满足条件的 stage
	for _, stage := range sopStages {
		if stage.ConditionType == 1 && isLabelIdListMatchFilter(currentLabelIds, stage.ConditionOperator, stage.ConditionList) {
			// 判断是否有 contact_wxid、source_type、source_id、sub_source_id 相同的记录
			_, err = l.svcCtx.DB.MessageRecords.Query().
				Where(
					messagerecords.ContactWxid(contact.Wxid),
					messagerecords.SourceType(3),
					messagerecords.SourceID(stage.ID),
					messagerecords.SubSourceID(0),
				).
				Only(l.ctx)
			if err == nil {
				continue
			}
			// 判断ActionMessage是否为空
			sourceType := 3
			if stage.ActionMessage != nil {
				for _, message := range stage.ActionMessage {
					_, _ = l.svcCtx.DB.MessageRecords.Create().
						SetNotNilBotWxid(&contact.WxWxid).
						SetNotNilContactID(&contact.ID).
						SetNotNilContactType(&contact.Type).
						SetNotNilContactWxid(&contact.Wxid).
						SetNotNilContentType(&message.Type).
						SetNotNilContent(&message.Content).
						SetNotNilSourceType(&sourceType).
						SetNotNilSourceID(&stage.ID).
						Save(l.ctx)

					//if err != nil {
					//	return dberrorhandler.DefaultEntError(l.Logger, err, nil)
					//}
				}
			}
			if stage.ActionLabel != nil {
				// 获取 addLabelIds 中不在 currentLabelIds 中的标签ID
				var newLabelIds []uint64
				// 创建一个映射，用于快速查找 currentLabelIds 中的元素
				currentLabelIdSet := make(map[uint64]struct{})
				for _, id := range currentLabelIds {
					currentLabelIdSet[id] = struct{}{}
				}

				// 遍历 addLabelIds，找出不在 currentLabelIds 中的元素
				for _, id := range stage.ActionLabel {
					if _, exists := currentLabelIdSet[id]; !exists {
						newLabelIds = append(newLabelIds, id)
					}
				}

				if len(newLabelIds) == 0 {
					return nil
				}

				// 创建需要新增的标签关系
				for _, id := range newLabelIds {
					_, err = l.svcCtx.DB.LabelRelationship.Create().
						SetLabelID(id).
						SetContactID(contact.ID).
						Save(l.ctx)
					//if err != nil {
					//	return dberrorhandler.DefaultEntError(l.Logger, err, nil)
					//}
				}

				// 合并 currentLabelIds 和 newLabelIds
				currentLabelIds = append(currentLabelIds, newLabelIds...)
				// 递归调用 AddLabelRelationships
				err = l.AddLabelRelationships(sopStages, contact, currentLabelIds)
				if err != nil {
					return err
				}
			}
		}

	}
	return nil
}

// compareLabelIds compares the new label ids with the current ones and returns the ids to be added and removed
func compareLabelIds(newLabelIds []uint64, currentLabelIds []uint64) (addLabelIds []uint64, removeLabelIds []uint64) {
	newLabelIdSet := make(map[uint64]struct{}, len(newLabelIds))
	for _, id := range newLabelIds {
		newLabelIdSet[id] = struct{}{}
	}

	for _, id := range currentLabelIds {
		if _, ok := newLabelIdSet[id]; ok {
			delete(newLabelIdSet, id)
		} else {
			removeLabelIds = append(removeLabelIds, id)
		}
	}

	for id := range newLabelIdSet {
		addLabelIds = append(addLabelIds, id)
	}

	return
}

func isLabelIdListMatchFilter(labelIdList []uint64, conditionOperator int, conditionList []custom_types.Condition) bool {
	labelIdSet := make(map[uint64]struct{})
	for _, id := range labelIdList {
		labelIdSet[id] = struct{}{}
	}

	for _, condition := range conditionList {
		match := false
		for _, id := range condition.LabelIdList {
			if _, ok := labelIdSet[id]; ok {
				match = true
				break
			}
		}

		if condition.Equal == 2 {
			match = !match
		}

		if (conditionOperator == 1 && !match) || (conditionOperator == 2 && match) {
			return match
		}
	}

	return conditionOperator == 1
}