import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod";
import OpenAI from 'openai';
import 'dotenv/config';

// Initialize OpenAI client
const openai = new OpenAI({
    apiKey: process.env.OPENAI_API_KEY,
});

const server = new McpServer({
    name: "Bible Expert - Letter to God",
    version: "0.1.0",
    description: "A server that provides Bible-based guidance and mentorship through AI",
});

server.tool(
    "getBibleGuidance",
    {
        description: "Get personalized Bible guidance and mentorship from God",
        inputSchema: {
            type: "object",
            properties: {
                name: {
                    type: "string",
                    description: "Your name"
                },
                feeling: {
                    type: "string",
                    description: "What you are feeling today or the problem you're facing"
                }
            },
            required: ["name", "feeling"]
        }
    },
    async ({ name, feeling }) => {
        try {
            console.log(`\n=== Processing Bible guidance request ===`);
            console.log(`Name: ${name}`);
            console.log(`Feeling: ${feeling}`);
            console.log(`Timestamp: ${new Date().toISOString()}`);
            console.log(`==========================================\n`);

            // Create the specific prompt template
            const prompt = `Act as a world renowned Bible Expert and Bible Mentor named God. Use this information to guide me today. My Name is ${name}. Today I'm feeling like ${feeling}

Find three Bible scriptures that will guide me through this problem. Then act as God Almighty and write me a full length personalized letter to me using the three bible scriptures that have been chosen. Explain each scripture chosen with a short summary in a form of stories. The letter should include other stories and parables that could help me. The letter should include a list of actions and activities I can do to help me cope and overcome this problem. The letter should be personalized and written to me as if you God is talking directly to me.`;

            console.log("Sending request to OpenAI...\n");

            // Send request to OpenAI
            const completion = await openai.chat.completions.create({
                model: "gpt-4",
                messages: [
                    {
                        role: "system",
                        content: "You are God Almighty, a loving and wise Bible Expert and Mentor. You provide personalized guidance using Bible scriptures, stories, and practical advice. Your responses should be compassionate, wise, and deeply rooted in Biblical teachings."
                    },
                    {
                        role: "user",
                        content: prompt
                    }
                ],
                max_tokens: 2000,
                temperature: 0.7
            });

            const response = completion.choices[0]?.message?.content;

            if (!response) {
                throw new Error("No response received from OpenAI");
            }

            // Display the response on terminal
            console.log("=== BIBLE GUIDANCE RESPONSE ===");
            console.log(response);
            console.log("===============================\n");

            return {
                content: [
                    {
                        type: "text",
                        text: `Dear ${name},\n\nHere is your personalized Bible guidance:\n\n${response}`
                    }
                ]
            };

        } catch (error) {
            console.error("Error getting Bible guidance:", error);
            
            let errorMessage = "Failed to get Bible guidance";
            if (error instanceof Error) {
                errorMessage += `: ${error.message}`;
            }

            return {
                content: [
                    {
                        type: "text",
                        text: errorMessage
                    }
                ]
            };
        }
    }
);

// Start the server
async function main() {
    const transport = new StdioServerTransport();
    await server.connect(transport);
    console.log("Letter to God MCP server running on stdio");
}

main().catch((error) => {
    console.error("Server failed to start:", error);
    process.exit(1);
});