const fs = require('fs');
const path = require('path');

const outputDir = path.join(__dirname, "../../../storage/documents");

if (!fs.existsSync(outputDir)) {
    fs.mkdirSync(outputDir, { recursive: true });
}

const SAIA_API_KEY = process.env.SAIA_API_KEY;
const SAIA_URL = "https://chat-ai.academiccloud.de/v1/chat/completions";

const module_exports = {
    name: "qwen3-235b-a22b",
    type: "llm",
    displayname: "QWEN 3 235B",
    description: "Generates documents using QWEN 3 235B via SAIA platform",

    async function(parameter) {
        try {
            console.log("SAIA QWEN 3 235B module invoked with parameters:", parameter);

            await this.createDocumentFromTranscript(
                parameter.inputTranscriptPath,
                parameter.documentTypePath,
                parameter.language
            );

        } catch (error) {
            console.error("Error in SAIA QWEN 3 235B module:", error);
        }
    },

    createDocumentFromTranscript: async function(transcriptPath, documentTypePath, language = "en") {
        try {
            const transcript = await fs.promises.readFile(transcriptPath, "utf-8");
            const documentType = await fs.promises.readFile(documentTypePath, "utf-8");
            const promptText = `${documentType}, in language ${language}, transcript:\n\n${transcript}`;

            // --- REST CALL ---
            const response = await fetch(SAIA_URL, {
                method: "POST",
                headers: {
                    "Authorization": `Bearer ${SAIA_API_KEY}`,
                    "Accept": "application/json",
                    "Content-Type": "application/json"
                },
                body: JSON.stringify({
                    model: "qwen3-235b-a22b",  // Korrekter Modellname!
                    messages: [
                        { role: "system", content: "You are a helpful assistant that generates documents from transcripts." },
                        { role: "user", content: promptText }
                    ],
                    temperature: 0
                })
            });

            if (!response.ok) {
                const text = await response.text();
                throw new Error(`SAIA API error (${response.status}): ${text}`);
            }

            const data = await response.json();
            const output = data.choices?.[0]?.message?.content || "";

            let inputTranscriptName = path.basename(transcriptPath, path.extname(transcriptPath));
            console.log(inputTranscriptName);

            const outPath = path.join(outputDir, `${inputTranscriptName}.md`);
            fs.writeFileSync(outPath, output, "utf8");

            console.log("Generated document written to:", outPath);

        } catch (error) {
            console.error("Error generating SAIA content:", error);
        }
    }
};

module.exports = module_exports;

if (require.main === module) {
    (async () => {
        const args = process.argv.slice(2);
        
        if (args.length < 2) {
            console.error("Usage: node quen3.js <transcriptPath> <documentTypePath> [language]");
            console.error("Example: node quen3.js ./transcript.json ./docType.json de");
            process.exit(1);
        }

        const [transcriptPath, documentTypePath, language] = args;

        if (!SAIA_API_KEY) {
            console.error("ERROR: SAIA_API_KEY environment variable is not set!");
            console.error("Please set it with: export SAIA_API_KEY='your_api_key_here'");
            process.exit(1);
        }

        if (!fs.existsSync(transcriptPath)) {
            console.error(`ERROR: Transcript file not found: ${transcriptPath}`);
            process.exit(1);
        }

        if (!fs.existsSync(documentTypePath)) {
            console.error(`ERROR: Document type file not found: ${documentTypePath}`);
            process.exit(1);
        }

        console.log("Starting document generation...");
        console.log(`Transcript: ${transcriptPath}`);
        console.log(`Document Type: ${documentTypePath}`);
        console.log(`Language: ${language || 'en (default)'}`);
        
        await module_exports.createDocumentFromTranscript(
            transcriptPath,
            documentTypePath,
            language || 'en'
        );
        
        console.log("Done!");
    })();
}