pkg/internal/database/migrator.go

@@ -11,7 +11,7 @@ var DatabaseAutoActionRange = []any{
 	&models.Channel{},
 	&models.ChannelMember{},
 	&models.Call{},
-	&models.Message{},
+	&models.Event{},
 }
 
 func RunMigration(source *gorm.DB) error {

pkg/internal/models/accounts.go

@@ -1,8 +1,8 @@
 package models
 
 // Account profiles basically fetched from Hydrogen.Identity
-// But cache at here for better usage
-// At the same time this model can make relations between local models
+// But cached at here for better usage
+// At the same time, this model can make relations between local models
 type Account struct {
 	BaseModel
 

pkg/internal/models/channels.go

@@ -14,7 +14,7 @@ type Channel struct {
 	Name        string          `json:"name"`
 	Description string          `json:"description"`
 	Members     []ChannelMember `json:"members"`
-	Messages    []Message       `json:"messages"`
+	Messages    []Event         `json:"messages"`
 	Calls       []Call          `json:"calls"`
 	Type        ChannelType     `json:"type"`
 	Account     Account         `json:"account"`
@@ -45,5 +45,5 @@ type ChannelMember struct {
 	PowerLevel int         `json:"power_level"`
 
 	Calls  []Call  `json:"calls" gorm:"foreignKey:FounderID"`
-	Messages []Message `json:"messages" gorm:"foreignKey:SenderID"`
+	Events []Event `json:"events" gorm:"foreignKey:SenderID"`
 }

pkg/internal/models/events.go

@@ -0,0 +1,33 @@
+package models
+
+import "gorm.io/datatypes"
+
+const (
+	EventMessageNew    = "messages.new"
+	EventMessageEdit   = "messages.edit"
+	EventMessageDelete = "messages.delete"
+	EventSystemChanges = "system.changes"
+)
+
+type Event struct {
+	BaseModel
+
+	Uuid      string            `json:"uuid"`
+	Body      datatypes.JSONMap `json:"body"`
+	Type      string            `json:"type"`
+	Channel   Channel           `json:"channel"`
+	Sender    ChannelMember     `json:"sender"`
+	ChannelID uint              `json:"channel_id"`
+	SenderID  uint              `json:"sender_id"`
+}
+
+// Event Payloads
+
+type EventMessageBody struct {
+	Text         string `json:"text,omitempty"`
+	Algorithm    string `json:"algorithm,omitempty"`
+	Attachments  []uint `json:"attachments,omitempty"`
+	QuoteEvent   uint   `json:"quote_event,omitempty"`
+	RelatedEvent uint   `json:"related_event,omitempty"`
+	RelatedUsers []uint `json:"related_users,omitempty"`
+}

pkg/internal/models/messages.go

@@ -1,22 +0,0 @@
-package models
-
-import "gorm.io/datatypes"
-
-const (
-	MessageTextType = "m.text"
-)
-
-type Message struct {
-	BaseModel
-
-	Uuid        string                    `json:"uuid"`
-	Content     datatypes.JSONMap         `json:"content"`
-	Type        string                    `json:"type"`
-	Attachments datatypes.JSONSlice[uint] `json:"attachments"`
-	Channel     Channel                   `json:"channel"`
-	Sender      ChannelMember             `json:"sender"`
-	ReplyID     *uint                     `json:"reply_id"`
-	ReplyTo     *Message                  `json:"reply_to" gorm:"foreignKey:ReplyID"`
-	ChannelID   uint                      `json:"channel_id"`
-	SenderID    uint                      `json:"sender_id"`
-}

pkg/internal/server/api/calls_api.go

@@ -6,6 +6,7 @@ import (
 	"git.solsynth.dev/hydrogen/messaging/pkg/internal/models"
 	"git.solsynth.dev/hydrogen/messaging/pkg/internal/services"
 	"github.com/gofiber/fiber/v2"
+	"github.com/google/uuid"
 	"github.com/spf13/viper"
 )
 
@@ -71,6 +72,16 @@ func startCall(c *fiber.Ctx) error {
 	if err != nil {
 		return fiber.NewError(fiber.StatusBadRequest, err.Error())
 	} else {
+		_, _ = services.NewEvent(models.Event{
+			Uuid:      uuid.NewString(),
+			Body:      map[string]any{},
+			Type:      "calls.start",
+			Channel:   channel,
+			Sender:    membership,
+			ChannelID: channel.ID,
+			SenderID:  membership.ID,
+		})
+
 		return c.JSON(call)
 	}
 }
@@ -107,6 +118,16 @@ func endCall(c *fiber.Ctx) error {
 	if call, err := services.EndCall(call); err != nil {
 		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
 	} else {
+		_, _ = services.NewEvent(models.Event{
+			Uuid:      uuid.NewString(),
+			Body:      map[string]any{"last": call.EndedAt.Unix() - call.CreatedAt.Unix()},
+			Type:      "calls.end",
+			Channel:   channel,
+			Sender:    membership,
+			ChannelID: channel.ID,
+			SenderID:  membership.ID,
+		})
+
 		return c.JSON(call)
 	}
 }

pkg/internal/server/api/events_api.go

@@ -0,0 +1,126 @@
+package api
+
+import (
+	"fmt"
+	"git.solsynth.dev/hydrogen/messaging/pkg/internal/gap"
+	"git.solsynth.dev/hydrogen/messaging/pkg/internal/models"
+	"git.solsynth.dev/hydrogen/messaging/pkg/internal/server/exts"
+	"git.solsynth.dev/hydrogen/messaging/pkg/internal/services"
+	"github.com/gofiber/fiber/v2"
+)
+
+func getEvent(c *fiber.Ctx) error {
+	if err := gap.H.EnsureAuthenticated(c); err != nil {
+		return err
+	}
+	user := c.Locals("user").(models.Account)
+	alias := c.Params("channel")
+	id, _ := c.ParamsInt("eventId")
+
+	var err error
+	var channel models.Channel
+	if val, ok := c.Locals("realm").(models.Realm); ok {
+		channel, err = services.GetChannelWithAlias(alias, val.ID)
+	} else {
+		channel, err = services.GetChannelWithAlias(alias)
+	}
+	if err != nil {
+		return fiber.NewError(fiber.StatusNotFound, err.Error())
+	} else if _, _, err := services.GetAvailableChannel(channel.ID, user); err != nil {
+		return fiber.NewError(fiber.StatusForbidden, fmt.Sprintf("you need join the channel before you read the messages: %v", err))
+	}
+
+	event, err := services.GetEvent(channel, uint(id))
+	if err != nil {
+		return fiber.NewError(fiber.StatusNotFound, err.Error())
+	}
+
+	return c.JSON(event)
+}
+
+func listEvent(c *fiber.Ctx) error {
+	if err := gap.H.EnsureAuthenticated(c); err != nil {
+		return err
+	}
+	user := c.Locals("user").(models.Account)
+	take := c.QueryInt("take", 0)
+	offset := c.QueryInt("offset", 0)
+	alias := c.Params("channel")
+
+	var err error
+	var channel models.Channel
+	if val, ok := c.Locals("realm").(models.Realm); ok {
+		channel, err = services.GetChannelWithAlias(alias, val.ID)
+	} else {
+		channel, err = services.GetChannelWithAlias(alias)
+	}
+	if err != nil {
+		return fiber.NewError(fiber.StatusNotFound, err.Error())
+	} else if _, _, err := services.GetAvailableChannel(channel.ID, user); err != nil {
+		return fiber.NewError(fiber.StatusForbidden, fmt.Sprintf("you need join the channel before you read the messages: %v", err))
+	}
+
+	count := services.CountEvent(channel)
+	events, err := services.ListEvent(channel, take, offset)
+	if err != nil {
+		return fiber.NewError(fiber.StatusNotFound, err.Error())
+	}
+
+	return c.JSON(fiber.Map{
+		"count": count,
+		"data":  events,
+	})
+}
+
+func newRawEvent(c *fiber.Ctx) error {
+	if err := gap.H.EnsureGrantedPerm(c, "CreateMessagingRawEvent", true); err != nil {
+		return err
+	}
+	user := c.Locals("user").(models.Account)
+	alias := c.Params("channel")
+
+	var data struct {
+		Uuid string         `json:"uuid" validate:"required"`
+		Type string         `json:"type" validate:"required"`
+		Body map[string]any `json:"body"`
+	}
+
+	if err := exts.BindAndValidate(c, &data); err != nil {
+		return err
+	} else if len(data.Uuid) < 36 {
+		return fiber.NewError(fiber.StatusBadRequest, "message uuid was not valid")
+	}
+
+	var err error
+	var channel models.Channel
+	var member models.ChannelMember
+	if val, ok := c.Locals("realm").(models.Realm); ok {
+		channel, member, err = services.GetAvailableChannelWithAlias(alias, user, val.ID)
+		if err != nil {
+			return fiber.NewError(fiber.StatusNotFound, err.Error())
+		}
+	} else {
+		channel, member, err = services.GetAvailableChannelWithAlias(alias, user)
+		if err != nil {
+			return fiber.NewError(fiber.StatusNotFound, err.Error())
+		} else if member.PowerLevel < 0 {
+			return fiber.NewError(fiber.StatusForbidden, "you have not enough permission to send message")
+		}
+	}
+
+	event := models.Event{
+		Uuid:      data.Uuid,
+		Body:      data.Body,
+		Type:      data.Type,
+		Sender:    member,
+		Channel:   channel,
+		ChannelID: channel.ID,
+		SenderID:  member.ID,
+	}
+
+	if event, err = services.NewEvent(event); err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, err.Error())
+	}
+
+	return c.JSON(event)
+}

pkg/internal/server/api/events_message_api.go

@@ -0,0 +1,157 @@
+package api
+
+import (
+	"git.solsynth.dev/hydrogen/messaging/pkg/internal/gap"
+	"git.solsynth.dev/hydrogen/messaging/pkg/internal/models"
+	"git.solsynth.dev/hydrogen/messaging/pkg/internal/server/exts"
+	"git.solsynth.dev/hydrogen/messaging/pkg/internal/services"
+	"github.com/gofiber/fiber/v2"
+	jsoniter "github.com/json-iterator/go"
+)
+
+func newMessageEvent(c *fiber.Ctx) error {
+	if err := gap.H.EnsureAuthenticated(c); err != nil {
+		return err
+	}
+	user := c.Locals("user").(models.Account)
+	alias := c.Params("channel")
+
+	var data struct {
+		Uuid string                  `json:"uuid" validate:"required"`
+		Type string                  `json:"type" validate:"required"`
+		Body models.EventMessageBody `json:"body"`
+	}
+
+	if err := exts.BindAndValidate(c, &data); err != nil {
+		return err
+	} else if len(data.Uuid) < 36 {
+		return fiber.NewError(fiber.StatusBadRequest, "message uuid was not valid")
+	}
+
+	if len(data.Body.Text) == 0 && len(data.Body.Attachments) == 0 {
+		return fiber.NewError(fiber.StatusBadRequest, "you cannot send an empty message")
+	}
+
+	var err error
+	var channel models.Channel
+	var member models.ChannelMember
+	if val, ok := c.Locals("realm").(models.Realm); ok {
+		channel, member, err = services.GetAvailableChannelWithAlias(alias, user, val.ID)
+		if err != nil {
+			return fiber.NewError(fiber.StatusNotFound, err.Error())
+		}
+	} else {
+		channel, member, err = services.GetAvailableChannelWithAlias(alias, user)
+		if err != nil {
+			return fiber.NewError(fiber.StatusNotFound, err.Error())
+		} else if member.PowerLevel < 0 {
+			return fiber.NewError(fiber.StatusForbidden, "you have not enough permission to send message")
+		}
+	}
+
+	var parsed map[string]any
+	raw, _ := jsoniter.Marshal(data.Body)
+	_ = jsoniter.Unmarshal(raw, &parsed)
+
+	event := models.Event{
+		Uuid:      data.Uuid,
+		Body:      parsed,
+		Type:      data.Type,
+		Sender:    member,
+		Channel:   channel,
+		ChannelID: channel.ID,
+		SenderID:  member.ID,
+	}
+
+	if event, err = services.NewEvent(event); err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, err.Error())
+	}
+
+	return c.JSON(event)
+}
+
+func editMessageEvent(c *fiber.Ctx) error {
+	if err := gap.H.EnsureAuthenticated(c); err != nil {
+		return err
+	}
+	user := c.Locals("user").(models.Account)
+	alias := c.Params("channel")
+	messageId, _ := c.ParamsInt("messageId", 0)
+
+	var data struct {
+		Uuid string                  `json:"uuid" validate:"required"`
+		Type string                  `json:"type" validate:"required"`
+		Body models.EventMessageBody `json:"body"`
+	}
+
+	if err := exts.BindAndValidate(c, &data); err != nil {
+		return err
+	}
+
+	if len(data.Body.Text) == 0 && len(data.Body.Attachments) == 0 {
+		return fiber.NewError(fiber.StatusBadRequest, "you cannot send an empty message")
+	}
+
+	var err error
+	var channel models.Channel
+	var member models.ChannelMember
+	if val, ok := c.Locals("realm").(models.Realm); ok {
+		channel, member, err = services.GetAvailableChannelWithAlias(alias, user, val.ID)
+		if err != nil {
+			return fiber.NewError(fiber.StatusNotFound, err.Error())
+		}
+	} else {
+		channel, member, err = services.GetAvailableChannelWithAlias(alias, user)
+		if err != nil {
+			return fiber.NewError(fiber.StatusNotFound, err.Error())
+		}
+	}
+
+	var event models.Event
+	if event, err = services.GetEventWithSender(channel, member, uint(messageId)); err != nil {
+		return fiber.NewError(fiber.StatusNotFound, err.Error())
+	}
+
+	event, err = services.EditMessage(event, data.Body)
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, err.Error())
+	}
+
+	return c.JSON(event)
+}
+
+func deleteMessageEvent(c *fiber.Ctx) error {
+	if err := gap.H.EnsureAuthenticated(c); err != nil {
+		return err
+	}
+	user := c.Locals("user").(models.Account)
+	alias := c.Params("channel")
+	messageId, _ := c.ParamsInt("messageId", 0)
+
+	var err error
+	var channel models.Channel
+	var member models.ChannelMember
+	if val, ok := c.Locals("realm").(models.Realm); ok {
+		channel, member, err = services.GetAvailableChannelWithAlias(alias, user, val.ID)
+		if err != nil {
+			return fiber.NewError(fiber.StatusNotFound, err.Error())
+		}
+	} else {
+		channel, member, err = services.GetAvailableChannelWithAlias(alias, user)
+		if err != nil {
+			return fiber.NewError(fiber.StatusNotFound, err.Error())
+		}
+	}
+
+	var event models.Event
+	if event, err = services.GetEventWithSender(channel, member, uint(messageId)); err != nil {
+		return fiber.NewError(fiber.StatusNotFound, err.Error())
+	}
+
+	event, err = services.DeleteMessage(event)
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, err.Error())
+	}
+
+	return c.JSON(event)
+}

pkg/internal/server/api/index.go

@@ -33,10 +33,13 @@ func MapAPIs(app *fiber.App) {
 			channels.Delete("/:channel/members", removeChannelMember)
 			channels.Delete("/:channel/members/me", leaveChannel)
 
-			channels.Get("/:channel/messages", listMessage)
-			channels.Post("/:channel/messages", newMessage)
-			channels.Put("/:channel/messages/:messageId", editMessage)
-			channels.Delete("/:channel/messages/:messageId", deleteMessage)
+			channels.Get("/:channel/events", listEvent)
+			channels.Get("/:channel/events/:eventId", getEvent)
+			channels.Post("/:channel/events", newRawEvent)
+
+			channels.Post("/:channel/messages", newMessageEvent)
+			channels.Put("/:channel/messages/:messageId", editMessageEvent)
+			channels.Delete("/:channel/messages/:messageId", deleteMessageEvent)
 
 			channels.Get("/:channel/calls", listCall)
 			channels.Get("/:channel/calls/ongoing", getOngoingCall)

pkg/internal/server/api/messages_api.go

@@ -1,221 +0,0 @@
-package api
-
-import (
-	"fmt"
-	"git.solsynth.dev/hydrogen/messaging/pkg/internal/database"
-	"git.solsynth.dev/hydrogen/messaging/pkg/internal/gap"
-	"git.solsynth.dev/hydrogen/messaging/pkg/internal/models"
-	"git.solsynth.dev/hydrogen/messaging/pkg/internal/server/exts"
-	"git.solsynth.dev/hydrogen/messaging/pkg/internal/services"
-	"github.com/gofiber/fiber/v2"
-	"strings"
-)
-
-func listMessage(c *fiber.Ctx) error {
-	if err := gap.H.EnsureAuthenticated(c); err != nil {
-		return err
-	}
-	user := c.Locals("user").(models.Account)
-	take := c.QueryInt("take", 0)
-	offset := c.QueryInt("offset", 0)
-	alias := c.Params("channel")
-
-	var err error
-	var channel models.Channel
-	if val, ok := c.Locals("realm").(models.Realm); ok {
-		channel, err = services.GetChannelWithAlias(alias, val.ID)
-	} else {
-		channel, err = services.GetChannelWithAlias(alias)
-	}
-	if err != nil {
-		return fiber.NewError(fiber.StatusNotFound, err.Error())
-	} else if _, _, err := services.GetAvailableChannel(channel.ID, user); err != nil {
-		return fiber.NewError(fiber.StatusForbidden, fmt.Sprintf("you need join the channel before you read the messages: %v", err))
-	}
-
-	count := services.CountMessage(channel)
-	messages, err := services.ListMessage(channel, take, offset)
-	if err != nil {
-		return fiber.NewError(fiber.StatusNotFound, err.Error())
-	}
-
-	return c.JSON(fiber.Map{
-		"count": count,
-		"data":  messages,
-	})
-}
-
-func newMessage(c *fiber.Ctx) error {
-	if err := gap.H.EnsureAuthenticated(c); err != nil {
-		return err
-	}
-	user := c.Locals("user").(models.Account)
-	alias := c.Params("channel")
-
-	var data struct {
-		Uuid        string         `json:"uuid" validate:"required"`
-		Type        string         `json:"type" validate:"required"`
-		Content     map[string]any `json:"content"`
-		Attachments []uint         `json:"attachments"`
-		ReplyTo     *uint          `json:"reply_to"`
-	}
-
-	if err := exts.BindAndValidate(c, &data); err != nil {
-		return err
-	} else if len(data.Uuid) < 36 {
-		return fiber.NewError(fiber.StatusBadRequest, "message uuid was not valid")
-	}
-
-	if len(data.Attachments) == 0 {
-		if data.Type == models.MessageTextType {
-			if val, ok := data.Content["value"].(string); ok && len(strings.TrimSpace(val)) == 0 {
-				return fiber.NewError(fiber.StatusBadRequest, "you cannot send an empty message")
-			} else if !ok {
-				return fiber.NewError(fiber.StatusBadRequest, "invalid content of text message")
-			}
-		}
-	}
-
-	for _, attachment := range data.Attachments {
-		if !services.CheckAttachmentByIDExists(attachment, "m.attachment") {
-			return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("attachment %d not found", attachment))
-		}
-	}
-
-	var err error
-	var channel models.Channel
-	var member models.ChannelMember
-	if val, ok := c.Locals("realm").(models.Realm); ok {
-		channel, member, err = services.GetAvailableChannelWithAlias(alias, user, val.ID)
-		if err != nil {
-			return fiber.NewError(fiber.StatusNotFound, err.Error())
-		}
-	} else {
-		channel, member, err = services.GetAvailableChannelWithAlias(alias, user)
-		if err != nil {
-			return fiber.NewError(fiber.StatusNotFound, err.Error())
-		} else if member.PowerLevel < 0 {
-			return fiber.NewError(fiber.StatusForbidden, "you have not enough permission to send message")
-		}
-	}
-
-	message := models.Message{
-		Uuid:        data.Uuid,
-		Content:     data.Content,
-		Sender:      member,
-		Channel:     channel,
-		ChannelID:   channel.ID,
-		SenderID:    member.ID,
-		Attachments: data.Attachments,
-		Type:        data.Type,
-	}
-
-	var replyTo models.Message
-	if data.ReplyTo != nil {
-		if err := database.C.Where("id = ?", data.ReplyTo).First(&replyTo).Error; err != nil {
-			return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("message to reply was not found: %v", err))
-		} else {
-			message.ReplyTo = &replyTo
-			message.ReplyID = &replyTo.ID
-		}
-	}
-
-	if message, err = services.NewMessage(message); err != nil {
-		return fiber.NewError(fiber.StatusBadRequest, err.Error())
-	}
-
-	return c.JSON(message)
-}
-
-func editMessage(c *fiber.Ctx) error {
-	if err := gap.H.EnsureAuthenticated(c); err != nil {
-		return err
-	}
-	user := c.Locals("user").(models.Account)
-	alias := c.Params("channel")
-	messageId, _ := c.ParamsInt("messageId", 0)
-
-	var data struct {
-		Type        string         `json:"type" validate:"required"`
-		Content     map[string]any `json:"content"`
-		Attachments []uint         `json:"attachments"`
-		ReplyTo     *uint          `json:"reply_to"`
-	}
-
-	if err := exts.BindAndValidate(c, &data); err != nil {
-		return err
-	}
-
-	for _, attachment := range data.Attachments {
-		if !services.CheckAttachmentByIDExists(attachment, "m.attachment") {
-			return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("attachment %d not found", attachment))
-		}
-	}
-
-	var err error
-	var channel models.Channel
-	var member models.ChannelMember
-	if val, ok := c.Locals("realm").(models.Realm); ok {
-		channel, member, err = services.GetAvailableChannelWithAlias(alias, user, val.ID)
-		if err != nil {
-			return fiber.NewError(fiber.StatusNotFound, err.Error())
-		}
-	} else {
-		channel, member, err = services.GetAvailableChannelWithAlias(alias, user)
-		if err != nil {
-			return fiber.NewError(fiber.StatusNotFound, err.Error())
-		}
-	}
-
-	var message models.Message
-	if message, err = services.GetMessageWithPrincipal(channel, member, uint(messageId)); err != nil {
-		return fiber.NewError(fiber.StatusNotFound, err.Error())
-	}
-
-	message.Attachments = data.Attachments
-	message.Content = data.Content
-	message.Type = data.Type
-
-	message, err = services.EditMessage(message)
-	if err != nil {
-		return fiber.NewError(fiber.StatusBadRequest, err.Error())
-	}
-
-	return c.JSON(message)
-}
-
-func deleteMessage(c *fiber.Ctx) error {
-	if err := gap.H.EnsureAuthenticated(c); err != nil {
-		return err
-	}
-	user := c.Locals("user").(models.Account)
-	alias := c.Params("channel")
-	messageId, _ := c.ParamsInt("messageId", 0)
-
-	var err error
-	var channel models.Channel
-	var member models.ChannelMember
-	if val, ok := c.Locals("realm").(models.Realm); ok {
-		channel, member, err = services.GetAvailableChannelWithAlias(alias, user, val.ID)
-		if err != nil {
-			return fiber.NewError(fiber.StatusNotFound, err.Error())
-		}
-	} else {
-		channel, member, err = services.GetAvailableChannelWithAlias(alias, user)
-		if err != nil {
-			return fiber.NewError(fiber.StatusNotFound, err.Error())
-		}
-	}
-
-	var message models.Message
-	if message, err = services.GetMessageWithPrincipal(channel, member, uint(messageId)); err != nil {
-		return fiber.NewError(fiber.StatusNotFound, err.Error())
-	}
-
-	message, err = services.DeleteMessage(message)
-	if err != nil {
-		return fiber.NewError(fiber.StatusBadRequest, err.Error())
-	}
-
-	return c.JSON(message)
-}

pkg/internal/services/events.go

@@ -0,0 +1,152 @@
+package services
+
+import (
+	"fmt"
+	"git.solsynth.dev/hydrogen/messaging/pkg/internal/database"
+	"git.solsynth.dev/hydrogen/messaging/pkg/internal/models"
+	jsoniter "github.com/json-iterator/go"
+	"github.com/rs/zerolog/log"
+	"github.com/samber/lo"
+	"strings"
+)
+
+func CountEvent(channel models.Channel) int64 {
+	var count int64
+	if err := database.C.Where(models.Event{
+		ChannelID: channel.ID,
+	}).Model(&models.Event{}).Count(&count).Error; err != nil {
+		return 0
+	} else {
+		return count
+	}
+}
+
+func ListEvent(channel models.Channel, take int, offset int) ([]models.Event, error) {
+	if take > 100 {
+		take = 100
+	}
+
+	var events []models.Event
+	if err := database.C.
+		Where(models.Event{
+			ChannelID: channel.ID,
+		}).Limit(take).Offset(offset).
+		Order("created_at DESC").
+		Preload("Sender").
+		Preload("Sender.Account").
+		Find(&events).Error; err != nil {
+		return events, err
+	} else {
+		return events, nil
+	}
+}
+
+func GetEvent(channel models.Channel, id uint) (models.Event, error) {
+	var event models.Event
+	if err := database.C.
+		Where(models.Event{
+			BaseModel: models.BaseModel{ID: id},
+			ChannelID: channel.ID,
+		}).
+		Preload("Sender").
+		Preload("Sender.Account").
+		First(&event).Error; err != nil {
+		return event, err
+	} else {
+		return event, nil
+	}
+}
+
+func GetEventWithSender(channel models.Channel, member models.ChannelMember, id uint) (models.Event, error) {
+	var event models.Event
+	if err := database.C.Where(models.Event{
+		BaseModel: models.BaseModel{ID: id},
+		ChannelID: channel.ID,
+		SenderID:  member.ID,
+	}).First(&event).Error; err != nil {
+		return event, err
+	} else {
+		return event, nil
+	}
+}
+
+func NewEvent(event models.Event) (models.Event, error) {
+	var members []models.ChannelMember
+	if err := database.C.Save(&event).Error; err != nil {
+		return event, err
+	} else if err = database.C.Where(models.ChannelMember{
+		ChannelID: event.ChannelID,
+	}).Preload("Account").Find(&members).Error; err != nil {
+		// Couldn't get channel members, skip notifying
+		return event, nil
+	}
+
+	event, _ = GetEvent(event.Channel, event.ID)
+	for _, member := range members {
+		PushCommand(member.AccountID, models.UnifiedCommand{
+			Action:  "events.new",
+			Payload: event,
+		})
+	}
+
+	if strings.HasPrefix(event.Type, "messages") {
+		NotifyMessageEvent(members, event)
+	}
+
+	return event, nil
+}
+
+func NotifyMessageEvent(members []models.ChannelMember, event models.Event) {
+	var body models.EventMessageBody
+	raw, _ := jsoniter.Marshal(event.Body)
+	_ = jsoniter.Unmarshal(raw, &body)
+
+	for _, member := range members {
+		if member.ID != event.SenderID {
+			switch member.Notify {
+			case models.NotifyLevelNone:
+				continue
+			case models.NotifyLevelMentioned:
+				if len(body.RelatedUsers) == 0 || !lo.Contains(body.RelatedUsers, member.AccountID) {
+					continue
+				}
+			default:
+				break
+			}
+
+			var displayText string
+			if body.Algorithm == "plain" {
+				displayText = body.Text
+			}
+
+			if len(displayText) == 0 {
+				displayText = fmt.Sprintf("%d attachment(s)", len(body.Attachments))
+			}
+
+			err := NotifyAccountMessager(member.Account,
+				"incomingMessage",
+				fmt.Sprintf("%s in #%s", event.Sender.Account.Nick, event.Channel.Alias),
+				fmt.Sprintf("%s", displayText),
+				true,
+				false,
+			)
+			if err != nil {
+				log.Warn().Err(err).Msg("An error occurred when trying notify user.")
+			}
+		}
+	}
+}
+
+func EditEvent(event models.Event) (models.Event, error) {
+	if err := database.C.Save(&event).Error; err != nil {
+		return event, err
+	}
+	return event, nil
+}
+
+func DeleteEvent(event models.Event) (models.Event, error) {
+	if err := database.C.Delete(&event).Error; err != nil {
+		return event, err
+	}
+	return event, nil
+}

pkg/internal/services/messages.go

@@ -1,181 +1,60 @@
 package services
 
 import (
-	"fmt"
-
-	"git.solsynth.dev/hydrogen/messaging/pkg/internal/database"
 	"git.solsynth.dev/hydrogen/messaging/pkg/internal/models"
-	"github.com/rs/zerolog/log"
-	"github.com/samber/lo"
+	"github.com/google/uuid"
+	jsoniter "github.com/json-iterator/go"
 )
 
-func CountMessage(channel models.Channel) int64 {
-	var count int64
-	if err := database.C.Where(models.Message{
-		ChannelID: channel.ID,
-	}).Model(&models.Message{}).Count(&count).Error; err != nil {
-		return 0
-	} else {
-		return count
-	}
+func EncodeMessageBody(body models.EventMessageBody) map[string]any {
+	var parsed map[string]any
+	raw, _ := jsoniter.Marshal(body)
+	_ = jsoniter.Unmarshal(raw, &parsed)
+	return parsed
 }
 
-func ListMessage(channel models.Channel, take int, offset int) ([]models.Message, error) {
-	if take > 100 {
-		take = 100
-	}
-
-	var messages []models.Message
-	if err := database.C.
-		Where(models.Message{
-			ChannelID: channel.ID,
-		}).Limit(take).Offset(offset).
-		Order("created_at DESC").
-		Preload("ReplyTo").
-		Preload("ReplyTo.Sender").
-		Preload("ReplyTo.Sender.Account").
-		Preload("Sender").
-		Preload("Sender.Account").
-		Find(&messages).Error; err != nil {
-		return messages, err
-	} else {
-		return messages, nil
-	}
-}
-
-func GetMessage(channel models.Channel, id uint) (models.Message, error) {
-	var message models.Message
-	if err := database.C.
-		Where(models.Message{
-			BaseModel: models.BaseModel{ID: id},
-			ChannelID: channel.ID,
-		}).
-		Preload("ReplyTo").
-		Preload("ReplyTo.Sender").
-		Preload("ReplyTo.Sender.Account").
-		Preload("Sender").
-		Preload("Sender.Account").
-		First(&message).Error; err != nil {
-		return message, err
-	} else {
-		return message, nil
-	}
-}
-
-func GetMessageWithPrincipal(channel models.Channel, member models.ChannelMember, id uint) (models.Message, error) {
-	var message models.Message
-	if err := database.C.Where(models.Message{
-		BaseModel: models.BaseModel{ID: id},
-		ChannelID: channel.ID,
-		SenderID:  member.ID,
-	}).First(&message).Error; err != nil {
-		return message, err
-	} else {
-		return message, nil
-	}
-}
-
-func NewMessage(message models.Message) (models.Message, error) {
-	var members []models.ChannelMember
-	if err := database.C.Save(&message).Error; err != nil {
-		return message, err
-	} else if err = database.C.Where(models.ChannelMember{
-		ChannelID: message.ChannelID,
-	}).Preload("Account").Find(&members).Error; err == nil {
-		channel := message.Channel
-		message, _ = GetMessage(message.Channel, message.ID)
-		for _, member := range members {
-			PushCommand(member.AccountID, models.UnifiedCommand{
-				Action:  "messages.new",
-				Payload: message,
-			})
-
-			if member.ID != message.SenderID {
-				switch member.Notify {
-				case models.NotifyLevelNone:
-					continue
-				case models.NotifyLevelMentioned:
-					if message.ReplyTo != nil && member.ID == message.ReplyTo.SenderID {
-						break
-					}
-					if val, ok := message.Content["mentioned_users"]; ok {
-						if usernames, ok := val.([]string); ok {
-							if lo.Contains(usernames, member.Account.Name) {
-								break
-							}
-						}
-					}
-				default:
-					break
-				}
-
-				var displayText string
-				if message.Content["algorithm"] == "plain" {
-					displayText, _ = message.Content["value"].(string)
-				} else {
-					displayText = "*encrypted message*"
-				}
-
-				if len(displayText) == 0 {
-					displayText = fmt.Sprintf("%d attachment(s)", len(message.Attachments))
-				}
-
-				err = NotifyAccountMessager(member.Account,
-					"incomingMessage",
-					fmt.Sprintf("%s in #%s", message.Sender.Account.Nick, channel.Alias),
-					fmt.Sprintf("%s", displayText),
-					true,
-					false,
-				)
+func EditMessage(event models.Event, body models.EventMessageBody) (models.Event, error) {
+	event.Body = EncodeMessageBody(body)
+	event, err := EditEvent(event)
 	if err != nil {
-					log.Warn().Err(err).Msg("An error occurred when trying notify user.")
+		return event, err
 	}
-			}
-		}
-	}
-
-	return message, nil
-}
-
-func EditMessage(message models.Message) (models.Message, error) {
-	var members []models.ChannelMember
-	if err := database.C.Save(&message).Error; err != nil {
-		return message, err
-	} else if err = database.C.Where(models.ChannelMember{
-		ChannelID: message.ChannelID,
-	}).Find(&members).Error; err == nil {
-		message, _ = GetMessage(models.Channel{
-			BaseModel: models.BaseModel{ID: message.Channel.ID},
-		}, message.ID)
-		for _, member := range members {
-			PushCommand(member.AccountID, models.UnifiedCommand{
-				Action:  "messages.update",
-				Payload: message,
+	body.RelatedEvent = event.ID
+	_, err = NewEvent(models.Event{
+		Uuid:      uuid.NewString(),
+		Body:      EncodeMessageBody(body),
+		Type:      models.EventMessageEdit,
+		Channel:   event.Channel,
+		Sender:    event.Sender,
+		ChannelID: event.ChannelID,
+		SenderID:  event.SenderID,
 	})
-		}
+	if err != nil {
+		return event, err
 	}
 
-	return message, nil
+	return event, nil
 }
 
-func DeleteMessage(message models.Message) (models.Message, error) {
-	prev, _ := GetMessage(models.Channel{
-		BaseModel: models.BaseModel{ID: message.Channel.ID},
-	}, message.ID)
-
-	var members []models.ChannelMember
-	if err := database.C.Delete(&message).Error; err != nil {
-		return message, err
-	} else if err = database.C.Where(models.ChannelMember{
-		ChannelID: message.ChannelID,
-	}).Find(&members).Error; err == nil {
-		for _, member := range members {
-			PushCommand(member.AccountID, models.UnifiedCommand{
-				Action:  "messages.burnt",
-				Payload: prev,
+func DeleteMessage(event models.Event) (models.Event, error) {
+	_, err := DeleteEvent(event)
+	if err != nil {
+		return event, err
+	}
+	_, err = NewEvent(models.Event{
+		Uuid: uuid.NewString(),
+		Body: EncodeMessageBody(models.EventMessageBody{
+			RelatedEvent: event.ID,
+		}),
+		Type:      models.EventMessageDelete,
+		Channel:   event.Channel,
+		Sender:    event.Sender,
+		ChannelID: event.ChannelID,
+		SenderID:  event.SenderID,
 	})
-		}
+	if err != nil {
+		return event, err
 	}
 
-	return message, nil
+	return event, nil
 }