package model

import (
	"encoding/json"
	"time"

	"gorm.io/gorm"
)

// Conversation represents a conversation between a contact and agents.
// Reference: Chatwoot Conversation model + P2B M3 spec
type Conversation struct {
	ID                       uint           `gorm:"primaryKey" json:"id"`
	AccountID                uint           `gorm:"not null;index" json:"account_id"`
	InboxID                  uint           `gorm:"not null;index" json:"inbox_id"`
	ContactID                uint           `gorm:"not null;index" json:"contact_id"`
	AssigneeID               *uint          `gorm:"index" json:"assignee_id,omitempty"`
	TeamID                   *uint          `gorm:"index" json:"team_id,omitempty"`
	Status                   string         `gorm:"size:50;not null;index;default:'open'" json:"status"` // open/resolved/pending/snoozed
	Priority                 string         `gorm:"size:50" json:"priority"` // urgent/high/medium/low
	LastNonActivityMessageID uint           `json:"last_non_activity_message_id"`
	Labels                   []string       `gorm:"type:text[];index" json:"labels"`
	CustomAttributes         json.RawMessage `gorm:"type:jsonb" json:"custom_attributes"`
	AdditionalAttributes     json.RawMessage `gorm:"type:jsonb" json:"additional_attributes"`
	Channel                  string         `gorm:"size:100" json:"channel"`
	ContactInboxID           uint           `gorm:"index" json:"contact_inbox_id"`
	UnreadCount              int            `gorm:"default:0" json:"unread_count"`
	FirstReplyCreatedAt      *time.Time     `json:"first_reply_created_at,omitempty"`
	LastActivityAt           *time.Time     `json:"last_activity_at,omitempty"`
	SnoozedUntil             *time.Time     `json:"snoozed_until,omitempty"`
	Uuid                     string         `gorm:"size:255;uniqueIndex" json:"uuid"`
	CreatedAt                time.Time      `gorm:"autoCreateTime;index" json:"created_at"`
	UpdatedAt                time.Time      `gorm:"autoUpdateTime" json:"updated_at"`
	DeletedAt                gorm.DeletedAt `gorm:"index" json:"deleted_at,omitempty"`

	Account      Account      `gorm:"foreignKey:AccountID" json:"account,omitempty"`
	Inbox        Inbox        `gorm:"foreignKey:InboxID" json:"inbox,omitempty"`
	Contact      Contact      `gorm:"foreignKey:ContactID" json:"contact,omitempty"`
	Assignee     *User        `gorm:"foreignKey:AssigneeID" json:"assignee,omitempty"`
	Team         *Team        `gorm:"foreignKey:TeamID" json:"team,omitempty"`
	Messages     []Message    `gorm:"foreignKey:ConversationID" json:"messages,omitempty"`
	Tags         []Tag        `gorm:"many2many:conversation_tags" json:"tags,omitempty"`
	AppliedSLAs []AppliedSLA  `gorm:"foreignKey:ConversationID" json:"applied_slas,omitempty"`
}

func (Conversation) TableName() string { return "conversations" }