[PD2] Server done?

Co-authored-by: tsousa111 <tiagao2001@hotmail.com>

Projs/PD2/internal/protocol/protocol.go

@@ -0,0 +1,119 @@
+package protocol
+
+import (
+	"time"
+)
+
+type Body interface{}
+
+type (
+	GetUserCert struct {
+		UID string `json:"uid"`
+	}
+
+	GetUnreadMsgsInfo struct {
+		Page     int `json:"page"`
+		PageSize int `json:"pageSize"`
+	}
+
+	GetMsg struct {
+		Num int `json:"num"`
+	}
+
+	SendMsg struct {
+		ToUID   string `json:"to_uid"`
+		Subject []byte `json:"subject"`
+		Body    []byte `json:"body"`
+	}
+
+	AnswerGetUserCert struct {
+		UID         string `json:"uid"`
+		Certificate []byte `json:"certificate"`
+	}
+
+	AnswerGetUnreadMsgsInfo struct {
+		Page         int       `json:"page"`
+		NumPages     int       `json:"num_pages"`
+		MessagesInfo []MsgInfo `json:"messages_info"`
+	}
+
+	MsgInfo struct {
+		Num       int       `json:"num"`
+		FromUID   string    `json:"from_uid"`
+		Subject   []byte    `json:"subject"`
+		Timestamp time.Time `json:"timestamp"`
+	}
+
+	AnswerGetMsg struct {
+		FromUID   string    `json:"from_uid"`
+		ToUID     string    `json:"to_uid"`
+		Subject   []byte    `json:"subject"`
+		Body      []byte    `json:"body"`
+		Timestamp time.Time `json:"timestamp"`
+	}
+
+	ReportError struct {
+		ErrorMessage string `json:"error"`
+	}
+)
+
+func NewGetUserCert(UID string) GetUserCert {
+	return GetUserCert{
+		UID: UID,
+	}
+}
+
+func NewGetUnreadMsgsInfo(page int, pageSize int) GetUnreadMsgsInfo {
+	return GetUnreadMsgsInfo{
+		Page:     page,
+		PageSize: pageSize}
+}
+
+func NewGetMsg(num int) GetMsg {
+	return GetMsg{
+		Num: num,
+	}
+}
+
+func NewSendMsg(toUID string, subject []byte, body []byte) SendMsg {
+	return SendMsg{
+		ToUID:   toUID,
+		Subject: subject,
+		Body:    body,
+	}
+}
+
+func NewAnswerGetUserCert(uid string, certificate []byte) AnswerGetUserCert {
+	return AnswerGetUserCert{
+		UID:         uid,
+		Certificate: certificate,
+	}
+}
+
+func NewAnswerGetUnreadMsgsInfo(page int, numPages int, messagesInfo []MsgInfo) AnswerGetUnreadMsgsInfo {
+	return AnswerGetUnreadMsgsInfo{Page: page, NumPages: numPages, MessagesInfo: messagesInfo}
+}
+func NewMsgInfo(num int, fromUID string, subject []byte, timestamp time.Time) MsgInfo {
+	return MsgInfo{
+		Num:       num,
+		FromUID:   fromUID,
+		Subject:   subject,
+		Timestamp: timestamp,
+	}
+}
+
+func NewAnswerGetMsg(fromUID, toUID string, subject []byte, body []byte, timestamp time.Time, last bool) AnswerGetMsg {
+	return AnswerGetMsg{
+		FromUID:   fromUID,
+		ToUID:     toUID,
+		Subject:   subject,
+		Body:      body,
+		Timestamp: timestamp,
+	}
+}
+
+func NewReportError(errorMessage string) ReportError {
+	return ReportError{
+		ErrorMessage: errorMessage,
+	}
+}