package label_relationship

import (
	"context"
	"github.com/suyuan32/simple-admin-common/msg/errormsg"
	"regexp"
	"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) {
	organizationId := l.ctx.Value("organizationId").(uint64)
	// 开始事务
	tx, err := l.svcCtx.DB.Tx(context.Background())
	if err != nil {
		return nil, dberrorhandler.DefaultEntError(l.Logger, err, req)
	}

	// 获取联系人信息
	c, err := tx.Contact.Query().Where(contact.ID(*req.ContactId), contact.OrganizationIDEQ(organizationId)).Only(l.ctx)
	// 获取联系人当前已关联的标签
	currentLabelRelationships, err := tx.LabelRelationship.Query().Where(labelrelationship.ContactID(*req.ContactId)).All(l.ctx)
	if err != nil {
		_ = tx.Rollback()
		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
		l.Logger.Errorf("------------------------removeLabelIds--------------------------- %+v\n", removeLabelIds)
		for _, id := range removeLabelIds {
			_, err := tx.LabelRelationship.
				Delete().
				Where(
					labelrelationship.ContactID(*req.ContactId),
					labelrelationship.LabelID(id),
				).
				Exec(l.ctx)
			if err != nil {
				_ = tx.Rollback()
				return nil, dberrorhandler.DefaultEntError(l.Logger, err, req)
			}
		}
	}

	// 创建需要新增的标签关系
	l.Logger.Errorf("------------------------addLabelIds--------------------------- %+v\n", addLabelIds)
	for _, id := range addLabelIds {
		_, _ = tx.LabelRelationship.Create().
			SetLabelID(id).
			SetContactID(*req.ContactId).
			SetOrganizationID(organizationId).
			Save(l.ctx)
		//if err != nil {
		//	return nil, dberrorhandler.DefaultEntError(l.Logger, err, req)
		//}
	}

	// 获取所有 status 为 3 且 bot_wxid_list 包含 c.wx_wxid 的 sop_task
	sopTasks, err := tx.SopTask.Query().Where(soptask.Status(3), soptask.OrganizationIDEQ(organizationId)).All(l.ctx)
	if err != nil {
		_ = tx.Rollback()
		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
	stageMap := make(map[uint64]*ent.SopStage)
	for _, task := range filteredSopTasks {
		stages, err := task.QueryTaskStages().All(l.ctx)
		if err != nil {
			_ = tx.Rollback()
			return nil, dberrorhandler.DefaultEntError(l.Logger, err, req)
		}
		for _, stage := range stages {
			stageMap[stage.ID] = stage
		}
		//sopStages = append(sopStages, stages...)
	}
	// 所有操作成功，提交事务
	err = tx.Commit()
	if err != nil {
		return nil, dberrorhandler.DefaultEntError(l.Logger, err, req)
	}
	err = l.AddLabelRelationships(stageMap, *c, req.LabelIds, organizationId)

	if err != nil {
		return nil, err
	}

	return &types.BaseMsgResp{Msg: errormsg.UpdateSuccess}, nil
}

func (l *UpdateLabelRelationshipsLogic) AddLabelRelationships(sopStages map[uint64]*ent.SopStage, contact ent.Contact, currentLabelIds []uint64, organizationId uint64) (err error) {
	// 遍历 sop_stages，找出满足条件的 stage
	for key, stage := range sopStages {
		if stage != nil && stage.ConditionType == 1 && isLabelIdListMatchFilter(currentLabelIds, stage.ConditionOperator, stage.ConditionList) {
			// 开始事务
			tx, err := l.svcCtx.DB.Tx(context.Background())
			if err != nil {
				return dberrorhandler.DefaultEntError(l.Logger, err, nil)
			}

			// 判断是否有 contact_wxid、source_type、source_id、sub_source_id 相同的记录
			_, err = tx.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 i, message := range stage.ActionMessage {
					meta := custom_types.Meta{}
					if message.Meta != nil {
						meta.Filename = message.Meta.Filename
					}
					_, err = tx.MessageRecords.Create().
						SetNotNilBotWxid(&contact.WxWxid).
						SetNotNilContactID(&contact.ID).
						SetNotNilContactType(&contact.Type).
						SetNotNilContactWxid(&contact.Wxid).
						SetNotNilContentType(&message.Type).
						SetNotNilContent(&message.Content).
						SetMeta(meta).
						SetNotNilSourceType(&sourceType).
						SetNotNilSourceID(&stage.ID).
						SetSubSourceID(uint64(i)).
						SetOrganizationID(organizationId).
						Save(l.ctx)

					if err != nil {
						_ = tx.Rollback()
						return dberrorhandler.DefaultEntError(l.Logger, err, nil)
					}
				}
			}
			if stage.ActionForward != nil {
				if stage.ActionForward.Wxid != "" {
					forwardWxids := splitString(stage.ActionForward.Wxid)
					for _, forwardWxid := range forwardWxids {
						for i, message := range stage.ActionForward.Action {
							meta := custom_types.Meta{}
							if message.Meta != nil {
								meta.Filename = message.Meta.Filename
							}
							_, err = tx.MessageRecords.Create().
								SetBotWxid(contact.WxWxid).
								SetContactID(0).
								SetContactType(0).
								SetContactWxid(forwardWxid).
								SetContentType(message.Type).
								SetContent(message.Content).
								SetMeta(meta).
								SetSourceType(sourceType).
								SetSourceID(stage.ID).
								SetSubSourceID(contact.ID + uint64(i)).
								SetOrganizationID(organizationId).
								Save(l.ctx)

							if err != nil {
								_ = tx.Rollback()
								return dberrorhandler.DefaultEntError(l.Logger, err, nil)
							}
						}
					}
				}
			}
			if stage.ActionLabelAdd != nil || stage.ActionLabelDel != nil {
				// 获取 addLabelIds 中不在 currentLabelIds 中的标签ID
				var newLabelIds []uint64
				var remLabelIds []uint64
				var finalLabelIds []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{}{}
				}

				delLabelIdSet := make(map[uint64]struct{})
				for _, id := range stage.ActionLabelDel {
					delLabelIdSet[id] = struct{}{}
				}

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

					if len(newLabelIds) > 0 {
						// 创建需要新增的标签关系
						for _, id := range newLabelIds {
							_, err = tx.LabelRelationship.Create().
								SetLabelID(id).
								SetContactID(contact.ID).
								SetOrganizationID(organizationId).
								Save(l.ctx)
							if err != nil {
								_ = tx.Rollback()
								return dberrorhandler.DefaultEntError(l.Logger, err, nil)
							}
						}
					}
					// 合并 currentLabelIds 和 newLabelIds
					currentLabelIds = append(currentLabelIds, newLabelIds...)
				}

				if stage.ActionLabelDel != nil {
					// 遍历 delLabelIds，找出在 currentLabelIds 中的元素
					for _, id := range stage.ActionLabelDel {
						if _, exists := currentLabelIdSet[id]; exists {
							remLabelIds = append(remLabelIds, id)
							delete(currentLabelIdSet, id)
						}
					}
					l.Logger.Errorf("------------------------stage.ActionLabelDel--------------------------- %+v\n", stage.ActionLabelDel)
					l.Logger.Errorf("------------------------remLabelIds--------------------------- %+v\n", stage.ActionLabelDel)
					if len(remLabelIds) > 0 {
						_, err = tx.LabelRelationship.Delete().Where(labelrelationship.LabelIDIn(remLabelIds...), labelrelationship.ContactIDEQ(contact.ID), labelrelationship.OrganizationIDEQ(organizationId)).Exec(l.ctx)
						if err != nil {
							//_ = tx.Rollback()
							return dberrorhandler.DefaultEntError(l.Logger, err, nil)
						}
					}
				}

				// 所有操作成功，提交事务
				err = tx.Commit()
				if err != nil {
					return dberrorhandler.DefaultEntError(l.Logger, err, nil)
				}

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

				for id := range currentLabelIdSet {
					finalLabelIds = append(finalLabelIds, id)
				}

				// 递归调用 AddLabelRelationships
				sopStages[key] = nil
				err = l.AddLabelRelationships(sopStages, contact, finalLabelIds, organizationId)
				if err != nil {
					return err
				}
				return nil
			} else {
				// 所有操作成功，提交事务
				err = tx.Commit()
				if err != nil {
					return dberrorhandler.DefaultEntError(l.Logger, err, nil)
				}
			}
		}
	}
	// 所有操作成功，提交事务
	//err = tx.Commit()
	//if err != nil {
	//	return dberrorhandler.DefaultEntError(l.Logger, err, nil)
	//}
	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
}

func splitString(input string) []string {
	// Define the regular expression pattern to match Chinese comma, English comma, and Chinese enumeration comma
	pattern := `[，,、]`
	re := regexp.MustCompile(pattern)
	// Split the input string based on the pattern
	return re.Split(input, -1)
}