/**
 * March Agent SDK - Conversation Message
 * Port of Python march_agent/conversation_message.py
 */

import type { ConversationMessageData } from './types.js'

/**
 * Represents a message from conversation history.
 */
export class ConversationMessage {
    readonly id: string
    readonly conversationId: string
    readonly role: 'user' | 'assistant' | 'system'
    readonly content: string
    readonly from?: string
    readonly to?: string
    readonly createdAt: Date
    readonly metadata?: Record<string, unknown>

    constructor(data: ConversationMessageData) {
        this.id = data.id
        this.conversationId = data.conversationId
        this.role = data.role
        this.content = data.content
        this.from = data.from
        this.to = data.to
        this.createdAt = new Date(data.createdAt)
        this.metadata = data.metadata
    }

    /**
     * Create from API response
     */
    static fromApiResponse(data: Record<string, unknown>): ConversationMessage {
        return new ConversationMessage({
            id: data.id as string,
            conversationId: data.conversation_id as string,
            role: data.role as 'user' | 'assistant' | 'system',
            content: data.content as string,
            from: data.from as string | undefined,
            to: data.to as string | undefined,
            createdAt: data.created_at as string,
            metadata: data.metadata as Record<string, unknown> | undefined,
        })
    }

    /**
     * Check if this is a user message
     */
    isUser(): boolean {
        return this.role === 'user'
    }

    /**
     * Check if this is an assistant message
     */
    isAssistant(): boolean {
        return this.role === 'assistant'
    }
}