committtttt

backend/internal/models/conversation.go

@@ -0,0 +1,63 @@
+package models
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+// Conversation represents a chat conversation between users and/or agents
+type Conversation struct {
+	ID            uint           `json:"id" gorm:"primaryKey"`
+	Title         string         `json:"title"`
+	UserID        uint           `json:"userId"`
+	AgentID       *uint          `json:"agentId,omitempty"`
+	Status        string         `json:"status" gorm:"default:'active'"` // 'active', 'closed', 'escalated'
+	Department    string         `json:"department"`
+	Priority      string         `json:"priority" gorm:"default:'medium'"` // 'low', 'medium', 'high', 'urgent'
+	Tags          string         `json:"tags"`                             // Comma-separated tags
+	LastMessageAt time.Time      `json:"lastMessageAt"`
+	CreatedAt     time.Time      `json:"createdAt"`
+	UpdatedAt     time.Time      `json:"updatedAt"`
+	DeletedAt     gorm.DeletedAt `json:"-" gorm:"index"`
+
+	// Relationships
+	User     User      `json:"user" gorm:"foreignKey:UserID"`
+	Agent    *User     `json:"agent,omitempty" gorm:"foreignKey:AgentID"`
+	Messages []Message `json:"messages" gorm:"foreignKey:ConversationID"`
+}
+
+// Message represents a single message in a conversation
+type Message struct {
+	ID             uint           `json:"id" gorm:"primaryKey"`
+	ConversationID uint           `json:"conversationId"`
+	UserID         uint           `json:"userId"`
+	Content        string         `json:"content" gorm:"not null"`
+	Type           string         `json:"type" gorm:"default:'text'"`   // 'text', 'image', 'file', 'system'
+	Status         string         `json:"status" gorm:"default:'sent'"` // 'sent', 'delivered', 'read'
+	Sentiment      float64        `json:"sentiment"`                    // Sentiment score from -1 (negative) to 1 (positive)
+	IsAI           bool           `json:"isAI" gorm:"default:false"`
+	AIModel        string         `json:"aiModel,omitempty"` // Which AI model generated this message
+	ReadAt         *time.Time     `json:"readAt,omitempty"`
+	CreatedAt      time.Time      `json:"createdAt"`
+	UpdatedAt      time.Time      `json:"updatedAt"`
+	DeletedAt      gorm.DeletedAt `json:"-" gorm:"index"`
+
+	// Relationships
+	Conversation Conversation `json:"conversation" gorm:"foreignKey:ConversationID"`
+	User         User         `json:"user" gorm:"foreignKey:UserID"`
+}
+
+
+// BeforeCreate is a GORM hook that sets the LastMessageAt field when creating a conversation
+func (c *Conversation) BeforeCreate(tx *gorm.DB) error {
+	c.LastMessageAt = time.Now()
+	return nil
+}
+
+// BeforeCreate is a GORM hook that updates the conversation's LastMessageAt when creating a message
+func (m *Message) BeforeCreate(tx *gorm.DB) error {
+	// Update the conversation's LastMessageAt
+	tx.Model(&Conversation{}).Where("id = ?", m.ConversationID).Update("last_message_at", time.Now())
+	return nil
+}