make mail a service

internal/constant/cast.go

@@ -0,0 +1,18 @@
+package constant
+
+const (
+	BinaryMessageTypeState      = 0
+	BinaryMessageTypeChat       = 1
+	BinaryMessageTypeQuest      = 2
+	BinaryMessageTypeData       = 3
+	BinaryMessageTypeMailNotify = 4
+	BinaryMessageTypeEmote      = 6
+)
+
+// MSG_SYS_CAST[ED]_BINARY broadcast types enum
+const (
+	BroadcastTypeTargeted = 0x01
+	BroadcastTypeStage    = 0x03
+	BroadcastTypeServer   = 0x06
+	BroadcastTypeWorld    = 0x0a
+)

internal/service/mail.go

@@ -0,0 +1,236 @@
+package service
+
+import (
+	"database/sql"
+	"erupe-ce/internal/constant"
+	"erupe-ce/network/binpacket"
+	"erupe-ce/network/mhfpacket"
+	"erupe-ce/utils/byteframe"
+	"erupe-ce/utils/db"
+
+	"erupe-ce/utils/logger"
+	"fmt"
+	"time"
+
+	"go.uber.org/zap"
+)
+
+type Mail struct {
+	ID                   int       `db:"id"`
+	SenderID             uint32    `db:"sender_id"`
+	RecipientID          uint32    `db:"recipient_id"`
+	Subject              string    `db:"subject"`
+	Body                 string    `db:"body"`
+	Read                 bool      `db:"read"`
+	Deleted              bool      `db:"deleted"`
+	Locked               bool      `db:"locked"`
+	AttachedItemReceived bool      `db:"attached_item_received"`
+	AttachedItemID       uint16    `db:"attached_item"`
+	AttachedItemAmount   uint16    `db:"attached_item_amount"`
+	CreatedAt            time.Time `db:"created_at"`
+	IsGuildInvite        bool      `db:"is_guild_invite"`
+	IsSystemMessage      bool      `db:"is_sys_message"`
+	SenderName           string    `db:"sender_name"`
+}
+
+func (m *Mail) Send(transaction *sql.Tx) error {
+	db, err := db.GetDB()
+	logger := logger.Get()
+
+	if err != nil {
+		logger.Fatal(fmt.Sprintf("Failed to get database instance: %s", err))
+	}
+	query := `
+		INSERT INTO mail (sender_id, recipient_id, subject, body, attached_item, attached_item_amount, is_guild_invite, is_sys_message)
+		VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+	`
+
+	if transaction == nil {
+		_, err = db.Exec(query, m.SenderID, m.RecipientID, m.Subject, m.Body, m.AttachedItemID, m.AttachedItemAmount, m.IsGuildInvite, m.IsSystemMessage)
+	} else {
+		_, err = transaction.Exec(query, m.SenderID, m.RecipientID, m.Subject, m.Body, m.AttachedItemID, m.AttachedItemAmount, m.IsGuildInvite, m.IsSystemMessage)
+	}
+
+	if err != nil {
+		logger.Error(
+			"failed to send mail",
+			zap.Error(err),
+			zap.Uint32("senderID", m.SenderID),
+			zap.Uint32("recipientID", m.RecipientID),
+			zap.String("subject", m.Subject),
+			zap.String("body", m.Body),
+			zap.Uint16("itemID", m.AttachedItemID),
+			zap.Uint16("itemAmount", m.AttachedItemAmount),
+			zap.Bool("isGuildInvite", m.IsGuildInvite),
+			zap.Bool("isSystemMessage", m.IsSystemMessage),
+		)
+		return err
+	}
+
+	return nil
+}
+
+func (m *Mail) MarkRead() error {
+	db, err := db.GetDB()
+	logger := logger.Get()
+	if err != nil {
+		logger.Fatal(fmt.Sprintf("Failed to get database instance: %s", err))
+	}
+	_, err = db.Exec(`
+		UPDATE mail SET read = true WHERE id = $1
+	`, m.ID)
+
+	if err != nil {
+		logger.Error(
+			"failed to mark mail as read",
+			zap.Error(err),
+			zap.Int("mailID", m.ID),
+		)
+		return err
+	}
+
+	return nil
+}
+
+func GetMailListForCharacter(charID uint32) ([]Mail, error) {
+	db, err := db.GetDB()
+	logger := logger.Get()
+	if err != nil {
+		logger.Fatal(fmt.Sprintf("Failed to get database instance: %s", err))
+	}
+	rows, err := db.Queryx(`
+		SELECT
+			m.id,
+			m.sender_id,
+			m.recipient_id,
+			m.subject,
+			m.read,
+			m.attached_item_received,
+			m.attached_item,
+			m.attached_item_amount,
+			m.created_at,
+			m.is_guild_invite,
+			m.is_sys_message,
+			m.deleted,
+			m.locked,
+			c.name as sender_name
+		FROM mail m
+			JOIN characters c ON c.id = m.sender_id
+		WHERE recipient_id = $1 AND m.deleted = false
+		ORDER BY m.created_at DESC, id DESC
+		LIMIT 32
+	`, charID)
+
+	if err != nil {
+		logger.Error("failed to get mail for character", zap.Error(err), zap.Uint32("charID", charID))
+		return nil, err
+	}
+
+	defer rows.Close()
+
+	allMail := make([]Mail, 0)
+
+	for rows.Next() {
+		mail := Mail{}
+
+		err := rows.StructScan(&mail)
+
+		if err != nil {
+			return nil, err
+		}
+
+		allMail = append(allMail, mail)
+	}
+
+	return allMail, nil
+}
+
+func GetMailByID(ID int) (*Mail, error) {
+	db, err := db.GetDB()
+	logger := logger.Get()
+
+	if err != nil {
+		logger.Fatal(fmt.Sprintf("Failed to get database instance: %s", err))
+	}
+	row := db.QueryRowx(`
+		SELECT
+			m.id,
+			m.sender_id,
+			m.recipient_id,
+			m.subject,
+			m.read,
+			m.body,
+			m.attached_item_received,
+			m.attached_item,
+			m.attached_item_amount,
+			m.created_at,
+			m.is_guild_invite,
+			m.is_sys_message,
+			m.deleted,
+			m.locked,
+			c.name as sender_name
+		FROM mail m
+			JOIN characters c ON c.id = m.sender_id
+		WHERE m.id = $1
+		LIMIT 1
+	`, ID)
+
+	mail := &Mail{}
+
+	err = row.StructScan(mail)
+
+	if err != nil {
+		logger.Error(
+			"failed to retrieve mail",
+			zap.Error(err),
+			zap.Int("mailID", ID),
+		)
+		return nil, err
+	}
+
+	return mail, nil
+}
+
+type SessionMail interface {
+	QueueSendMHF(packet mhfpacket.MHFPacket)
+}
+
+func SendMailNotification(s SessionMail, m *Mail, recipient SessionMail) {
+	bf := byteframe.NewByteFrame()
+
+	notification := &binpacket.MsgBinMailNotify{
+		SenderName: getCharacterName(m.SenderID),
+	}
+
+	notification.Build(bf)
+
+	castedBinary := &mhfpacket.MsgSysCastedBinary{
+		CharID:         m.SenderID,
+		BroadcastType:  0x00,
+		MessageType:    constant.BinaryMessageTypeMailNotify,
+		RawDataPayload: bf.Data(),
+	}
+
+	castedBinary.Build(bf)
+
+	recipient.QueueSendMHF(castedBinary)
+}
+
+func getCharacterName(charID uint32) string {
+	db, err := db.GetDB()
+	logger := logger.Get()
+
+	if err != nil {
+		logger.Fatal(fmt.Sprintf("Failed to get database instance: %s", err))
+	}
+	row := db.QueryRow("SELECT name FROM characters WHERE id = $1", charID)
+
+	charName := ""
+
+	err = row.Scan(&charName)
+
+	if err != nil {
+		return ""
+	}
+	return charName
+}

server/channelserver/chat_commands.go

@@ -4,6 +4,7 @@ import (
 	"crypto/rand"
 	"encoding/hex"
 	"erupe-ce/config"
+	"erupe-ce/internal/constant"
 	"erupe-ce/network/mhfpacket"
 	"erupe-ce/utils/byteframe"
 	"erupe-ce/utils/db"
@@ -357,7 +358,7 @@ func teleport(s *Session, args []string) error {
 	payload.WriteInt16(int16(y))
 	s.QueueSendMHF(&mhfpacket.MsgSysCastedBinary{
 		CharID:         s.CharID,
-		MessageType:    BinaryMessageTypeState,
+		MessageType:    constant.BinaryMessageTypeState,
 		RawDataPayload: payload.Data(),
 	})
 	s.sendMessage(t("commands.teleport.success", v{"x": fmt.Sprintf("%d", x), "y": fmt.Sprintf("%d", y)}))

server/channelserver/handlers_cast_binary.go

@@ -2,6 +2,7 @@ package channelserver
 
 import (
 	"erupe-ce/config"
+	"erupe-ce/internal/constant"
 	"erupe-ce/network/binpacket"
 	"erupe-ce/network/mhfpacket"
 	"erupe-ce/utils/byteframe"
@@ -18,22 +19,6 @@ import (
 )
 
 // MSG_SYS_CAST[ED]_BINARY types enum
-const (
-	BinaryMessageTypeState      = 0
-	BinaryMessageTypeChat       = 1
-	BinaryMessageTypeQuest      = 2
-	BinaryMessageTypeData       = 3
-	BinaryMessageTypeMailNotify = 4
-	BinaryMessageTypeEmote      = 6
-)
-
-// MSG_SYS_CAST[ED]_BINARY broadcast types enum
-const (
-	BroadcastTypeTargeted = 0x01
-	BroadcastTypeStage    = 0x03
-	BroadcastTypeServer   = 0x06
-	BroadcastTypeWorld    = 0x0a
-)
 
 var (
 	commands   map[string]config.Command
@@ -72,7 +57,7 @@ func sendServerChatMessage(s *Session, message string) {
 
 	castedBin := &mhfpacket.MsgSysCastedBinary{
 		CharID:         0,
-		MessageType:    BinaryMessageTypeChat,
+		MessageType:    constant.BinaryMessageTypeChat,
 		RawDataPayload: bf.Data(),
 	}
 
@@ -118,7 +103,7 @@ func handleMsgSysCastBinary(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 	var msgBinTargeted *binpacket.MsgBinTargeted
 	var message, author string
 	var returnToSender bool
-	if pkt.MessageType == BinaryMessageTypeChat {
+	if pkt.MessageType == constant.BinaryMessageTypeChat {
 		tmp.SetLE()
 		tmp.Seek(8, 0)
 		message = string(tmp.ReadNullTerminatedBytes())
@@ -127,7 +112,7 @@ func handleMsgSysCastBinary(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 
 	// Customise payload
 	realPayload := pkt.RawDataPayload
-	if pkt.BroadcastType == BroadcastTypeTargeted {
+	if pkt.BroadcastType == constant.BroadcastTypeTargeted {
 		tmp.SetBE()
 		tmp.Seek(0, 0)
 		msgBinTargeted = &binpacket.MsgBinTargeted{}
@@ -137,11 +122,11 @@ func handleMsgSysCastBinary(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 			return
 		}
 		realPayload = msgBinTargeted.RawDataPayload
-	} else if pkt.MessageType == BinaryMessageTypeChat {
+	} else if pkt.MessageType == constant.BinaryMessageTypeChat {
 		if message == "@dice" {
 			returnToSender = true
 			m := binpacket.MsgBinChat{
-				Type:       BinaryMessageTypeChat,
+				Type:       constant.BinaryMessageTypeChat,
 				Flags:      4,
 				Message:    fmt.Sprintf(`%d`, token.RNG.Intn(100)+1),
 				SenderName: author,
@@ -162,7 +147,7 @@ func handleMsgSysCastBinary(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 				}
 				return
 			}
-			if (pkt.BroadcastType == BroadcastTypeStage && s.stage.id == "sl1Ns200p0a0u0") || pkt.BroadcastType == BroadcastTypeWorld {
+			if (pkt.BroadcastType == constant.BroadcastTypeStage && s.stage.id == "sl1Ns200p0a0u0") || pkt.BroadcastType == constant.BroadcastTypeWorld {
 				s.Server.DiscordChannelSend(chatMessage.SenderName, chatMessage.Message)
 			}
 		}
@@ -178,15 +163,15 @@ func handleMsgSysCastBinary(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 
 	// Send to the proper recipients.
 	switch pkt.BroadcastType {
-	case BroadcastTypeWorld:
+	case constant.BroadcastTypeWorld:
 		s.Server.WorldcastMHF(resp, s, nil)
-	case BroadcastTypeStage:
+	case constant.BroadcastTypeStage:
 		if returnToSender {
 			s.stage.BroadcastMHF(resp, nil)
 		} else {
 			s.stage.BroadcastMHF(resp, s)
 		}
-	case BroadcastTypeServer:
+	case constant.BroadcastTypeServer:
 		if pkt.MessageType == 1 {
 			raviSema := s.Server.getRaviSemaphore()
 			if raviSema != nil {
@@ -195,7 +180,7 @@ func handleMsgSysCastBinary(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 		} else {
 			s.Server.BroadcastMHF(resp, s)
 		}
-	case BroadcastTypeTargeted:
+	case constant.BroadcastTypeTargeted:
 		for _, targetID := range (*msgBinTargeted).TargetCharIDs {
 			char := s.Server.FindSessionByCharID(targetID)
 

server/channelserver/handlers_guild.go

@@ -7,6 +7,8 @@ import (
 	"errors"
 	"erupe-ce/config"
 	"erupe-ce/internal/model"
+	"erupe-ce/internal/service"
+
 	"erupe-ce/utils/db"
 	"erupe-ce/utils/gametime"
 	"erupe-ce/utils/mhfitem"
@@ -723,13 +725,13 @@ func HandleMsgMhfOperateGuild(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 		if err != nil {
 			response = 0
 		} else {
-			mail := Mail{
+			mail := service.Mail{
 				RecipientID:     s.CharID,
 				Subject:         "Withdrawal",
 				Body:            fmt.Sprintf("You have withdrawn from 「%s」.", guild.Name),
 				IsSystemMessage: true,
 			}
-			mail.Send(s, nil)
+			mail.Send(nil)
 		}
 		bf.WriteUint32(uint32(response))
 	case mhfpacket.OperateGuildDonateRank:
@@ -900,11 +902,11 @@ func HandleMsgMhfOperateGuildMember(s *Session, db *sqlx.DB, p mhfpacket.MHFPack
 		return
 	}
 
-	var mail Mail
+	var mail service.Mail
 	switch pkt.Action {
 	case mhfpacket.OPERATE_GUILD_MEMBER_ACTION_ACCEPT:
 		err = guild.AcceptApplication(s, pkt.CharID)
-		mail = Mail{
+		mail = service.Mail{
 			RecipientID:     pkt.CharID,
 			Subject:         "Accepted!",
 			Body:            fmt.Sprintf("Your application to join 「%s」 was accepted.", guild.Name),
@@ -912,7 +914,7 @@ func HandleMsgMhfOperateGuildMember(s *Session, db *sqlx.DB, p mhfpacket.MHFPack
 		}
 	case mhfpacket.OPERATE_GUILD_MEMBER_ACTION_REJECT:
 		err = guild.RejectApplication(s, pkt.CharID)
-		mail = Mail{
+		mail = service.Mail{
 			RecipientID:     pkt.CharID,
 			Subject:         "Rejected",
 			Body:            fmt.Sprintf("Your application to join 「%s」 was rejected.", guild.Name),
@@ -920,7 +922,7 @@ func HandleMsgMhfOperateGuildMember(s *Session, db *sqlx.DB, p mhfpacket.MHFPack
 		}
 	case mhfpacket.OPERATE_GUILD_MEMBER_ACTION_KICK:
 		err = guild.RemoveCharacter(s, pkt.CharID)
-		mail = Mail{
+		mail = service.Mail{
 			RecipientID:     pkt.CharID,
 			Subject:         "Kicked",
 			Body:            fmt.Sprintf("You were kicked from 「%s」.", guild.Name),
@@ -934,11 +936,11 @@ func HandleMsgMhfOperateGuildMember(s *Session, db *sqlx.DB, p mhfpacket.MHFPack
 	if err != nil {
 		s.DoAckSimpleFail(pkt.AckHandle, make([]byte, 4))
 	} else {
-		mail.Send(s, nil)
+		mail.Send(nil)
 		for _, channel := range s.Server.Channels {
 			for _, session := range channel.sessions {
 				if session.CharID == pkt.CharID {
-					SendMailNotification(s, &mail, session)
+					service.SendMailNotification(s, &mail, session)
 				}
 			}
 		}

server/channelserver/handlers_guild_scout.go

@@ -1,6 +1,7 @@
 package channelserver
 
 import (
+	"erupe-ce/internal/service"
 	"erupe-ce/network/mhfpacket"
 	"erupe-ce/utils/byteframe"
 	"erupe-ce/utils/gametime"
@@ -60,7 +61,7 @@ func HandleMsgMhfPostGuildScout(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket)
 		panic(err)
 	}
 
-	mail := &Mail{
+	mail := &service.Mail{
 		SenderID:    s.CharID,
 		RecipientID: pkt.CharID,
 		Subject:     s.Server.i18n.guild.invite.title,
@@ -71,7 +72,7 @@ func HandleMsgMhfPostGuildScout(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket)
 		IsGuildInvite: true,
 	}
 
-	err = mail.Send(s, transaction)
+	err = mail.Send(transaction)
 
 	if err != nil {
 		rollbackTransaction(s, transaction)
@@ -144,16 +145,16 @@ func HandleMsgMhfAnswerGuildScout(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket
 		return
 	}
 
-	var mail []Mail
+	var mail []service.Mail
 	if pkt.Answer {
 		err = guild.AcceptApplication(s, s.CharID)
-		mail = append(mail, Mail{
+		mail = append(mail, service.Mail{
 			RecipientID:     s.CharID,
 			Subject:         s.Server.i18n.guild.invite.success.title,
 			Body:            fmt.Sprintf(s.Server.i18n.guild.invite.success.body, guild.Name),
 			IsSystemMessage: true,
 		})
-		mail = append(mail, Mail{
+		mail = append(mail, service.Mail{
 			SenderID:        s.CharID,
 			RecipientID:     pkt.LeaderID,
 			Subject:         s.Server.i18n.guild.invite.accepted.title,
@@ -162,13 +163,13 @@ func HandleMsgMhfAnswerGuildScout(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket
 		})
 	} else {
 		err = guild.RejectApplication(s, s.CharID)
-		mail = append(mail, Mail{
+		mail = append(mail, service.Mail{
 			RecipientID:     s.CharID,
 			Subject:         s.Server.i18n.guild.invite.rejected.title,
 			Body:            fmt.Sprintf(s.Server.i18n.guild.invite.rejected.body, guild.Name),
 			IsSystemMessage: true,
 		})
-		mail = append(mail, Mail{
+		mail = append(mail, service.Mail{
 			SenderID:        s.CharID,
 			RecipientID:     pkt.LeaderID,
 			Subject:         s.Server.i18n.guild.invite.declined.title,
@@ -185,7 +186,7 @@ func HandleMsgMhfAnswerGuildScout(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket
 		bf.WriteUint32(guild.ID)
 		s.DoAckBufSucceed(pkt.AckHandle, bf.Data())
 		for _, m := range mail {
-			m.Send(s, nil)
+			m.Send(nil)
 		}
 	}
 }

server/channelserver/handlers_mail.go

@@ -1,228 +1,15 @@
 package channelserver
 
 import (
-	"database/sql"
+	"erupe-ce/internal/service"
-	"erupe-ce/utils/db"
 	"erupe-ce/utils/stringsupport"
-	"fmt"
-	"time"
 
-	"erupe-ce/network/binpacket"
 	"erupe-ce/network/mhfpacket"
 	"erupe-ce/utils/byteframe"
 
 	"github.com/jmoiron/sqlx"
-	"go.uber.org/zap"
 )
 
-type Mail struct {
-	ID                   int       `db:"id"`
-	SenderID             uint32    `db:"sender_id"`
-	RecipientID          uint32    `db:"recipient_id"`
-	Subject              string    `db:"subject"`
-	Body                 string    `db:"body"`
-	Read                 bool      `db:"read"`
-	Deleted              bool      `db:"deleted"`
-	Locked               bool      `db:"locked"`
-	AttachedItemReceived bool      `db:"attached_item_received"`
-	AttachedItemID       uint16    `db:"attached_item"`
-	AttachedItemAmount   uint16    `db:"attached_item_amount"`
-	CreatedAt            time.Time `db:"created_at"`
-	IsGuildInvite        bool      `db:"is_guild_invite"`
-	IsSystemMessage      bool      `db:"is_sys_message"`
-	SenderName           string    `db:"sender_name"`
-}
-
-func (m *Mail) Send(s *Session, transaction *sql.Tx) error {
-	db, err := db.GetDB()
-	if err != nil {
-		s.Logger.Fatal(fmt.Sprintf("Failed to get database instance: %s", err))
-	}
-	query := `
-		INSERT INTO mail (sender_id, recipient_id, subject, body, attached_item, attached_item_amount, is_guild_invite, is_sys_message)
-		VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
-	`
-
-	if transaction == nil {
-		_, err = db.Exec(query, m.SenderID, m.RecipientID, m.Subject, m.Body, m.AttachedItemID, m.AttachedItemAmount, m.IsGuildInvite, m.IsSystemMessage)
-	} else {
-		_, err = transaction.Exec(query, m.SenderID, m.RecipientID, m.Subject, m.Body, m.AttachedItemID, m.AttachedItemAmount, m.IsGuildInvite, m.IsSystemMessage)
-	}
-
-	if err != nil {
-		s.Logger.Error(
-			"failed to send mail",
-			zap.Error(err),
-			zap.Uint32("senderID", m.SenderID),
-			zap.Uint32("recipientID", m.RecipientID),
-			zap.String("subject", m.Subject),
-			zap.String("body", m.Body),
-			zap.Uint16("itemID", m.AttachedItemID),
-			zap.Uint16("itemAmount", m.AttachedItemAmount),
-			zap.Bool("isGuildInvite", m.IsGuildInvite),
-			zap.Bool("isSystemMessage", m.IsSystemMessage),
-		)
-		return err
-	}
-
-	return nil
-}
-
-func (m *Mail) MarkRead(s *Session) error {
-	db, err := db.GetDB()
-	if err != nil {
-		s.Logger.Fatal(fmt.Sprintf("Failed to get database instance: %s", err))
-	}
-	_, err = db.Exec(`
-		UPDATE mail SET read = true WHERE id = $1
-	`, m.ID)
-
-	if err != nil {
-		s.Logger.Error(
-			"failed to mark mail as read",
-			zap.Error(err),
-			zap.Int("mailID", m.ID),
-		)
-		return err
-	}
-
-	return nil
-}
-
-func GetMailListForCharacter(s *Session, charID uint32) ([]Mail, error) {
-	db, err := db.GetDB()
-	if err != nil {
-		s.Logger.Fatal(fmt.Sprintf("Failed to get database instance: %s", err))
-	}
-	rows, err := db.Queryx(`
-		SELECT
-			m.id,
-			m.sender_id,
-			m.recipient_id,
-			m.subject,
-			m.read,
-			m.attached_item_received,
-			m.attached_item,
-			m.attached_item_amount,
-			m.created_at,
-			m.is_guild_invite,
-			m.is_sys_message,
-			m.deleted,
-			m.locked,
-			c.name as sender_name
-		FROM mail m
-			JOIN characters c ON c.id = m.sender_id
-		WHERE recipient_id = $1 AND m.deleted = false
-		ORDER BY m.created_at DESC, id DESC
-		LIMIT 32
-	`, charID)
-
-	if err != nil {
-		s.Logger.Error("failed to get mail for character", zap.Error(err), zap.Uint32("charID", charID))
-		return nil, err
-	}
-
-	defer rows.Close()
-
-	allMail := make([]Mail, 0)
-
-	for rows.Next() {
-		mail := Mail{}
-
-		err := rows.StructScan(&mail)
-
-		if err != nil {
-			return nil, err
-		}
-
-		allMail = append(allMail, mail)
-	}
-
-	return allMail, nil
-}
-
-func GetMailByID(s *Session, ID int) (*Mail, error) {
-	db, err := db.GetDB()
-	if err != nil {
-		s.Logger.Fatal(fmt.Sprintf("Failed to get database instance: %s", err))
-	}
-	row := db.QueryRowx(`
-		SELECT
-			m.id,
-			m.sender_id,
-			m.recipient_id,
-			m.subject,
-			m.read,
-			m.body,
-			m.attached_item_received,
-			m.attached_item,
-			m.attached_item_amount,
-			m.created_at,
-			m.is_guild_invite,
-			m.is_sys_message,
-			m.deleted,
-			m.locked,
-			c.name as sender_name
-		FROM mail m
-			JOIN characters c ON c.id = m.sender_id
-		WHERE m.id = $1
-		LIMIT 1
-	`, ID)
-
-	mail := &Mail{}
-
-	err = row.StructScan(mail)
-
-	if err != nil {
-		s.Logger.Error(
-			"failed to retrieve mail",
-			zap.Error(err),
-			zap.Int("mailID", ID),
-		)
-		return nil, err
-	}
-
-	return mail, nil
-}
-
-func SendMailNotification(s *Session, m *Mail, recipient *Session) {
-	bf := byteframe.NewByteFrame()
-
-	notification := &binpacket.MsgBinMailNotify{
-		SenderName: getCharacterName(s, m.SenderID),
-	}
-
-	notification.Build(bf)
-
-	castedBinary := &mhfpacket.MsgSysCastedBinary{
-		CharID:         m.SenderID,
-		BroadcastType:  0x00,
-		MessageType:    BinaryMessageTypeMailNotify,
-		RawDataPayload: bf.Data(),
-	}
-
-	castedBinary.Build(bf)
-
-	recipient.QueueSendMHF(castedBinary)
-}
-
-func getCharacterName(s *Session, charID uint32) string {
-	db, err := db.GetDB()
-	if err != nil {
-		s.Logger.Fatal(fmt.Sprintf("Failed to get database instance: %s", err))
-	}
-	row := db.QueryRow("SELECT name FROM characters WHERE id = $1", charID)
-
-	charName := ""
-
-	err = row.Scan(&charName)
-
-	if err != nil {
-		return ""
-	}
-	return charName
-}
-
 func handleMsgMhfReadMail(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 	pkt := p.(*mhfpacket.MsgMhfReadMail)
 
@@ -232,7 +19,7 @@ func handleMsgMhfReadMail(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 		return
 	}
 
-	mail, err := GetMailByID(s, mailId)
+	mail, err := service.GetMailByID(mailId)
 	if err != nil {
 		s.DoAckBufSucceed(pkt.AckHandle, []byte{0})
 		return
@@ -248,7 +35,7 @@ func handleMsgMhfReadMail(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 func handleMsgMhfListMail(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 	pkt := p.(*mhfpacket.MsgMhfListMail)
 
-	mail, err := GetMailListForCharacter(s, s.CharID)
+	mail, err := service.GetMailListForCharacter(s.CharID)
 	if err != nil {
 		s.DoAckBufSucceed(pkt.AckHandle, []byte{0})
 		return
@@ -317,7 +104,7 @@ func handleMsgMhfListMail(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 func handleMsgMhfOprtMail(s *Session, db *sqlx.DB, p mhfpacket.MHFPacket) {
 	pkt := p.(*mhfpacket.MsgMhfOprtMail)
 
-	mail, err := GetMailByID(s, s.mailList[pkt.AccIndex])
+	mail, err := service.GetMailByID(s.mailList[pkt.AccIndex])
 	if err != nil {
 		s.DoAckSimpleSucceed(pkt.AckHandle, make([]byte, 4))
 		return

server/channelserver/sys_broadcast.go

@@ -1,6 +1,7 @@
 package channelserver
 
 import (
+	"erupe-ce/internal/constant"
 	"erupe-ce/network/binpacket"
 	"erupe-ce/network/mhfpacket"
 	"erupe-ce/utils/byteframe"
@@ -45,7 +46,7 @@ func (server *ChannelServer) BroadcastChatMessage(message string) {
 	msgBinChat.Build(bf)
 
 	server.BroadcastMHF(&mhfpacket.MsgSysCastedBinary{
-		MessageType:    BinaryMessageTypeChat,
+		MessageType:    constant.BinaryMessageTypeChat,
 		RawDataPayload: bf.Data(),
 	}, nil)
 }
@@ -76,8 +77,8 @@ func (server *ChannelServer) BroadcastRaviente(ip uint32, port uint16, stage []b
 	bf.WriteUint16(0)    // Unk
 	bf.WriteBytes(stage)
 	server.WorldcastMHF(&mhfpacket.MsgSysCastedBinary{
-		BroadcastType:  BroadcastTypeServer,
+		BroadcastType:  constant.BroadcastTypeServer,
-		MessageType:    BinaryMessageTypeChat,
+		MessageType:    constant.BinaryMessageTypeChat,
 		RawDataPayload: bf.Data(),
 	}, nil, server)
 }

server/channelserver/sys_session.go

@@ -4,6 +4,7 @@ import (
 	"encoding/binary"
 	"encoding/hex"
 	"erupe-ce/config"
+	"erupe-ce/internal/constant"
 	"erupe-ce/network"
 	"erupe-ce/network/binpacket"
 	"erupe-ce/network/mhfpacket"
@@ -15,6 +16,7 @@ import (
 	"erupe-ce/utils/stringstack"
 	"fmt"
 	"io"
+
 	"net"
 	"sync"
 	"time"
@@ -269,7 +271,7 @@ func (s *Session) sendMessage(message string) {
 	msgBinChat.Build(bf)
 	castedBin := &mhfpacket.MsgSysCastedBinary{
 		CharID:         0,
-		MessageType:    BinaryMessageTypeChat,
+		MessageType:    constant.BinaryMessageTypeChat,
 		RawDataPayload: bf.Data(),
 	}
 	s.QueueSendMHF(castedBin)