import ConfigManager from './ConfigManager.js';
import { CustomerIdentifier } from './CustomerIdentifier.js';
import { getContentType } from '@whiskeysockets/baileys';
import type { Logger } from 'pino';

export type ExtractedMessage = {
    type: string | undefined;
    text: string;
    isGroup: boolean;
    remoteJid: string;
    senderNum: string;
    senderCrmFormat: string;
    senderName: string;
    isReplyToBot: boolean;
    messageId: string | undefined;
    fromMe: boolean;
    mentionedJid: string[];
};

/**
 * Fluxo PV simples (estilo negra_plena, sem menus):
 * - PV: responde a tudo (menos fromMe/stubs/vazio/só-emoji).
 * - Grupo: só se for reply à Akira, menção ou "akira" no texto.
 */
export class MessageProcessor {
    private config: ConfigManager;
    private logger: Logger;
    private customerId: CustomerIdentifier;
    private botId: string = '';

    constructor(logger: Logger) {
        this.config = ConfigManager.getInstance();
        this.logger = logger;
        this.customerId = new CustomerIdentifier();
    }

    public setBotId(id: string) {
        this.botId = this.customerId.getClientId(id);
    }

    public extractInfo(m: any): ExtractedMessage | null {
        const message = m.message;
        if (!message) return null;

        const type = getContentType(message);
        let text = '';

        if (type === 'conversation') text = message.conversation;
        else if (type === 'extendedTextMessage') text = message.extendedTextMessage.text;
        else if (type === 'imageMessage' && message.imageMessage.caption) text = message.imageMessage.caption;
        else if (type === 'videoMessage' && message.videoMessage.caption) text = message.videoMessage.caption;

        const remoteJid = m.key.remoteJid || '';
        const isGroup = remoteJid.endsWith('@g.us');

        let senderRaw = isGroup ? m.key.participant : remoteJid;
        if (m.key.fromMe) senderRaw = this.botId;

        const senderPn = m.key.senderPn || m.key.remoteJidAlt || senderRaw;
        const senderNum = this.customerId.getClientId(senderPn);
        const senderCrmFormat = this.customerId.formatForCRM(senderPn);

        const contextInfo = message?.extendedTextMessage?.contextInfo;
        const repliedJid = contextInfo?.participant || '';
        const isReplyToBot = !!repliedJid && this.customerId.getClientId(repliedJid) === this.botId;

        return {
            type,
            text: text || '',
            isGroup,
            remoteJid,
            senderNum,
            senderCrmFormat,
            senderName: m.pushName || 'Cliente',
            isReplyToBot,
            messageId: m.key.id,
            fromMe: m.key.fromMe || false,
            mentionedJid: contextInfo?.mentionedJid || [],
        };
    }

    public shouldRespondToAI(info: ExtractedMessage, rawMessage: any): boolean {
        if (info.fromMe) return false;

        if (rawMessage.messageStubType) {
            this.logger.debug('STUB ignorado');
            return false;
        }

        const textoLimpo = (info.text || '').trim();
        if (textoLimpo.length === 0) return false;

        if (!info.isGroup) {
            const emojiOnlyRegex = /^[\p{Emoji}\p{Emoji_Modifier}\p{Emoji_Component}\p{Emoji_Modifier_Base}\p{Emoji_Presentation}\s]{1,10}$/u;
            if (emojiOnlyRegex.test(textoLimpo) && textoLimpo.length <= 10) return false;
            return true;
        }

        if (info.isReplyToBot) return true;

        const isBotMentioned = info.mentionedJid.some(
            (jid) => this.customerId.getClientId(jid) === this.botId
        );
        if (isBotMentioned) return true;

        if (textoLimpo.toLowerCase().includes('akira')) return true;

        return false;
    }
}