package wechat

import (
	"context"
	"wechat-api/ent"
	"wechat-api/ent/agent"
	"wechat-api/ent/contact"
	"wechat-api/ent/label"
	"wechat-api/ent/labelrelationship"
	"wechat-api/ent/wx"
)

type WxSafeChange struct {
	Ctx            context.Context
	Tx             *ent.Tx
	WxId           string
	OrganizationId uint64
}

func (w *WxSafeChange) KeepAllSafe() error {
	err := w.BlockListSafe()
	if err != nil {
		return err
	}
	err = w.AgentSafe()
	if err != nil {
		return err
	}
	err = w.LabelSafe()
	if err != nil {
		return err
	}
	return nil
}

func (w *WxSafeChange) BlockListSafe() error {
	wxinfo, err := w.Tx.Wx.Query().
		Where(
			wx.Wxid(w.WxId),
		).
		Only(w.Ctx)
	if err != nil {
		if ent.IsNotFound(err) {
			return nil
		}
		return err
	}
	bl := []string{}
	if wxinfo == nil {
		return nil
	}

	for _, l := range wxinfo.BlockList {
		if l != "" && l != "ALL" {
			bl = append(bl, l)
		}
	}
	for _, l := range wxinfo.GroupBlockList {
		if l != "" && l != "ALL" {
			bl = append(bl, l)
		}
	}
	for _, l := range wxinfo.AllowList {
		if l != "" && l != "ALL" {
			bl = append(bl, l)
		}
	}
	for _, l := range wxinfo.GroupAllowList {
		if l != "" && l != "ALL" {
			bl = append(bl, l)
		}
	}

	contactList, err := w.Tx.Contact.Query().
		Where(
			contact.WxWxidNEQ(w.WxId),
			contact.WxidIn(bl...),
		).All(w.Ctx)

	if err != nil && !ent.IsNotFound(err) {
		return err
	}

	if contactList != nil {
		_, err = w.Tx.Wx.UpdateOneID(wxinfo.ID).
			SetBlockList([]string{}).
			SetGroupBlockList([]string{}).
			SetAllowList([]string{"ALL"}).
			SetGroupAllowList([]string{"ALL"}).
			Save(w.Ctx)
		if err != nil {
			return err
		}
	}

	return nil
}

func (w *WxSafeChange) AgentSafe() error {
	wxinfo, err := w.Tx.Wx.Query().
		Where(
			wx.Wxid(w.WxId),
			wx.HasAgentWith(
				agent.DeletedAtIsNil(),
				agent.OrganizationIDNEQ(w.OrganizationId),
			),
		).
		WithAgent().
		Only(w.Ctx)
	if err != nil {
		if ent.IsNotFound(err) {
			return nil
		}
		return err
	}
	if wxinfo != nil && wxinfo.Edges.Agent != nil {
		_, err = w.Tx.Wx.UpdateOneID(wxinfo.ID).
			SetAgentID(0).
			Save(w.Ctx)
		if err != nil {
			return err
		}
	}
	return nil
}

func (w *WxSafeChange) LabelSafe() error {
	// 获取现有联系人的所有标签名称
	contactLabelNames, err := w.Tx.Label.Query().
		Where(
			label.DeletedAtIsNil(),
			label.HasLabelRelationshipsWith(
				labelrelationship.DeletedAtIsNil(),
				labelrelationship.HasContactsWith(
					contact.WxWxidEQ(w.WxId),
				),
			),
		).
		Select(label.FieldName).
		Strings(w.Ctx)

	if err != nil {
		if ent.IsNotFound(err) {
			return nil
		}
		return err
	}

	newLabelNames, err := w.Tx.Label.Query().
		Where(
			label.DeletedAtIsNil(),
			label.OrganizationIDEQ(w.OrganizationId),
			label.NameNotIn(contactLabelNames...),
		).
		Select(label.FieldName).
		Strings(w.Ctx)

	if err != nil && !ent.IsNotFound(err) {
		return err
	}

	if newLabelNames == nil && len(newLabelNames) > 0 {
		// 创建新标签
		for _, labelName := range newLabelNames {
			_, err = w.Tx.Label.Create().
				SetName(labelName).
				SetOrganizationID(w.OrganizationId).
				Save(w.Ctx)
			if err != nil {
				return err
			}
		}
	}

	// 建立新的标签 id 映射关系
	orgLabels, err := w.Tx.Label.Query().
		Where(
			label.DeletedAtIsNil(),
			label.OrganizationIDEQ(w.OrganizationId),
			label.NameIn(contactLabelNames...),
		).
		Select(label.FieldID, label.FieldName).
		All(w.Ctx)
	if err != nil {
		return err
	}
	labelSet := make(map[string]uint64)
	for _, l := range orgLabels {
		labelSet[l.Name] = l.ID
	}

	// 建立新的标签关系
	labelRelationships, err := w.Tx.LabelRelationship.Query().
		Where(
			labelrelationship.DeletedAtIsNil(),
			labelrelationship.HasContactsWith(
				contact.WxWxidEQ(w.WxId),
			),
		).WithLabels().WithContacts().All(w.Ctx)
	if err != nil {
		return err
	}

	for _, relationship := range labelRelationships {
		_, err = w.Tx.LabelRelationship.Create().
			SetLabelID(labelSet[relationship.Edges.Labels.Name]).
			SetContactID(relationship.Edges.Contacts.ID).
			Save(w.Ctx)
		if err != nil {
			return err
		}
	}

	// 删除旧的标签关系
	_, err = w.Tx.LabelRelationship.Delete().
		Where(
			labelrelationship.DeletedAtIsNil(),
			labelrelationship.HasLabelsWith(
				label.OrganizationIDNEQ(w.OrganizationId)),
			labelrelationship.HasContactsWith(
				contact.WxWxidEQ(w.WxId),
			),
		).Exec(w.Ctx)
	if err != nil {
		return err
	}
	return nil
}