const BaseAgent = require('./BaseAgent');

class FollowUpAgent extends BaseAgent {
    constructor() {
        super('FollowUpAgent');
        this.responseMocks = {
            'default': JSON.stringify({ message: "Hello! It has been a few days since your visit. How are you feeling today?" })
        };
    }

    async execute(config, payload) {
        const { patientName, phone, daysSinceVisit, context } = payload;
        
        console.log(`[FollowUpAgent] Generating follow-up for ${patientName} (${daysSinceVisit} days post-visit)`);
        
        const prompt = `
            Draft a friendly, empathetic WhatsApp follow-up message for patient ${patientName}.
            Context of last visit: "${context}"
            Return a JSON object: { "message": "..." }
        `;

        const llmResponse = await this.mockLLMCall(prompt, this.responseMocks);
        
        try {
            const result = JSON.parse(llmResponse);
            console.log(`[FollowUpAgent] Message to send: ${result.message}`);
            // Here we would integrate with WhatsApp API to actually send it
            return result;
        } catch (e) {
            console.error('[FollowUpAgent] Failed to parse LLM response', e);
            return { message: "Hi! Just checking in on your health. Let us know if you need anything." };
        }
    }
}

module.exports = new FollowUpAgent();