import { downloadImagesFromPinterestPin } from './lib/downloader';
import { callOpenAIWithFile } from './lib/openai';
import { generateVideo } from './lib/video-generator';
import { generateImage as generateImageMixStyle } from './lib/image-generator-mix-style';
import { generateImage as generateImage } from './lib/image-generator';
import { logger } from './lib/logger';
import * as fs from 'fs/promises';
import dotenv from 'dotenv';
import path from 'path';
import puppeteer from 'puppeteer';
import { VideoModel } from './lib/db/video';

dotenv.config();
const RUN_ONCE = (process.env.RUN_ONCE || 'false').toLowerCase() === 'true';

const USE_REFERENCE_IMAGE = (process.env.USE_REFERENCE_IMAGE || 'true').toLowerCase() === 'true';


// Utility: extract JSON substring from a text.
// Tries fenced ```json``` blocks first, otherwise extracts first {...} span.
function extractJsonFromText(text: string): any | null {
    if (!text || typeof text !== 'string') return null;

    // Try fenced code block with optional json language
    const fenced = text.match(/```(?:json)?\s*([\s\S]*?)\s*```/i);
    if (fenced && fenced[1]) {
        try {
            return JSON.parse(fenced[1].trim());
        } catch (e) {
            // fall through to brace extraction
        }
    }

    // Try to extract first {...} match
    const brace = text.match(/\{[\s\S]*\}/);
    if (brace && brace[0]) {
        try {
            return JSON.parse(brace[0]);
        } catch (e) {
            return null;
        }
    }

    return null;
}

// Wrapper to call OpenAI with an image and prompt, and extract JSON reliably.
// - Uses callOpenAIWithFile to pass the image.
// - Tries to parse JSON from response if needed.
// - Retries up to maxRetries times (default 5) when parsing fails or an error occurs.
async function callOpenAIWithFileAndExtract(imagePath: string, prompt: string, maxRetries = 5): Promise<any | null> {
    for (let attempt = 1; attempt <= maxRetries; attempt++) {
        try {
            const res = await callOpenAIWithFile(imagePath, prompt);
            // callOpenAIWithFile may return an object or parsed JSON already
            if (res && typeof res === 'object') {
                return res;
            }
            if (typeof res === 'string') {
                const parsed = extractJsonFromText(res);
                if (parsed) return parsed;
            }
            // unexpected shape -> retry
            logger.warn(`callOpenAIWithFileAndExtract: attempt ${attempt} returned unexpected result. Retrying...`);
        } catch (err) {
            logger.warn(`callOpenAIWithFileAndExtract: attempt ${attempt} failed: ${err}`);
        }
    }
    logger.error(`callOpenAIWithFileAndExtract: failed to get valid JSON after ${maxRetries} attempts`);
    return null;
}
const servers = [

    {
        baseUrl: process.env.SERVER1_COMFY_BASE_URL,
        outputDir: process.env.SERVER1_COMFY_OUTPUT_DIR,
    },
    {
        baseUrl: process.env.SERVER2_COMFY_BASE_URL,
        outputDir: process.env.SERVER2_COMFY_OUTPUT_DIR,
    },
].filter((s): s is { baseUrl: string; outputDir: string } => !!s.baseUrl && !!s.outputDir);

interface GenerationTask {
    pinUrl: string;
    imagePrompt: string;
    videoPrompt: string;
    imageFileName: string;
    renamedImagePaths: string[];
    generatedImagePath?: string;
    genre: string;
    subGenre: string;
    scene: string;
    action: string;
    camera: string;
    videoInstructions?: string[];
}

async function getPromptsForImage(imagePaths: string[], pinUrl: string, genre: string, subGenre: string, videoInstructions: string[] = []): Promise<GenerationTask | null> {
    const pinId = pinUrl.split('/').filter(Boolean).pop() || `pin_${Date.now()}`;
    const timestamp = new Date().getTime();
    const imageFileName = `${pinId}_${timestamp}.png`;

    const renamedImagePaths: string[] = [];
    for (let i = 0; i < imagePaths.length; i++) {
        const renamedPath = path.join(path.dirname(imagePaths[i]), `${pinId}_${timestamp}_${i}.png`);
        await fs.rename(imagePaths[i], renamedPath);
        renamedImagePaths.push(renamedPath);
    }
    logger.debug(`Renamed source images to: ${renamedImagePaths.join(', ')}`);

    const imageForPrompt = renamedImagePaths[Math.floor(Math.random() * renamedImagePaths.length)];

    try {
        // Step 1: Detect main object
        const step1Prompt = `
Return exactly one JSON object and nothing else: { "mainobject": "..." }.
Look at the provided image and determine the single most prominent/main object or subject in the scene.
Answer with a short noun or short phrase (no extra commentary).
If unsure, give the best concise guess.
`;
        const step1Res = await callOpenAIWithFileAndExtract(imageForPrompt, step1Prompt, 5);
        const mainobject = (step1Res && (step1Res.mainobject || step1Res.mainObject || step1Res.object)) ? String(step1Res.mainobject || step1Res.mainObject || step1Res.object).trim() : '';

        if (!mainobject) {
            throw new Error('Could not detect main object');
        }
        logger.info(`Detected main object for ${imageForPrompt}: ${mainobject}`);

        // Step 2: Determine best action for this scene
        const step2Prompt = `
You have access to the image and the detected main object: "${mainobject}".
Decide which single action type best fits this scene from the list:
- no action
- micro animation (animate object but small movement)
- big movement
- impossible movement
- Dance ( if its woman portrait )

Return exactly one JSON object and nothing else: { "actiontype": "..." }.
Do not add commentary. Choose the single best option from the list above.
`;
        const step2Res = await callOpenAIWithFileAndExtract(imageForPrompt, step2Prompt, 5);
        const actiontype = (step2Res && (step2Res.actiontype || step2Res.actionType)) ? String(step2Res.actiontype || step2Res.actionType).trim() : '';

        if (!actiontype) {
            throw new Error('Could not determine action type');
        }
        logger.info(`Decided action type for ${imageForPrompt}: ${actiontype}`);

        // Step 3: Ask OpenAI what is the best camera work for the scene
        const step3Prompt = `
Given the image and the following information:
- main object: "${mainobject}"
- chosen action type: "${actiontype}"

From the options below pick the single best camera approach for this scene:
- static camera
- pan
- rotation
- follow the moving object
- zoom to the object
- impossible camera work

Return exactly one JSON object and nothing else: { "cameraworkType": "..." }.
Choose one of the listed options and do not add commentary.
`;
        const step3Res = await callOpenAIWithFileAndExtract(imageForPrompt, step3Prompt, 5);
        const cameraworkType = (step3Res && (step3Res.cameraworkType || step3Res.cameraWorkType || step3Res.camera)) ? String(step3Res.cameraworkType || step3Res.cameraWorkType || step3Res.camera).trim() : '';

        if (!cameraworkType) {
            throw new Error('Could not determine camera work');
        }
        logger.info(`Decided camera work for ${imageForPrompt}: ${cameraworkType}`);

        let videoInstruction = "";
        if (videoInstructions && videoInstructions.length > 0) {

            const videoInstructionPrompt = `
Given the image and the following information:
- main object: "${mainobject}"

From the options below pick the single best camera approach for this scene:
${videoInstructions.join(",\r\n")}

Return exactly one JSON object and nothing else: { "videoInstruction": "..." }.
Choose one of the listed options and do not add commentary.
`;
            const videoInstructionRes = await callOpenAIWithFileAndExtract(imageForPrompt, videoInstructionPrompt, 5);
            const videoInstructionFinalRes = (step3Res && (videoInstructionRes.videoInstruction || videoInstructionRes.videoInstruction || videoInstructionRes.camera)) ? String(videoInstructionRes.videoInstruction || videoInstructionRes.videoInstruction || videoInstructionRes.camera).trim() : '';

            if (videoInstructionFinalRes)
                videoInstruction = videoInstructionFinalRes

        }
        // Step 4: Generate final video prompt (and image prompt) using all gathered info
        const finalPrompt = `
Return exactly one JSON object: { "scene": "...", "action":"...", "camera":"...", "image_prompt":"...", "videoPrompt":"..." } and nothing else.

Write "videoPrompt" in 100–150 words, present tense, plain concrete language.
Write "image_prompt" as a concise, detailed prompt suitable for generating a similar image.

HARD RULES (must comply for videoPrompt):
- One continuous shot. Real-time 8 seconds. No edits.
- Fixed location and vantage. Do not change background or angle.
- Lens and focal length locked. No zooms, no close-ups that imply a lens change.
- Camera motion: at most subtle pan/tilt/dolly within 1 meter while staying in the same spot.
- Keep framing consistent. No “another shot/meanwhile.”
- Use clear simple sentences. No metaphors or poetic language.

Here is information of the scene, please generate fields accordingly:
Detected Main Object: ${mainobject}
Suggested Action Type: ${actiontype}
Suggested Camera Work: ${cameraworkType}
Genre: ${genre}
Sub-Genre: ${subGenre}
${videoInstruction ? 'video instruction:' + videoInstruction : ""}
`;
        const finalRes = await callOpenAIWithFileAndExtract(imageForPrompt, finalPrompt, 5);

        const scene = finalRes && (finalRes.scene || finalRes.Scene) ? String(finalRes.scene) : '';
        const action = finalRes && (finalRes.action || finalRes.Action) ? String(finalRes.action) : '';
        const camera = finalRes && (finalRes.camera || finalRes.Camera) ? String(finalRes.camera) : '';
        const imagePrompt = finalRes && (finalRes.image_prompt || finalRes.imagePrompt || finalRes.image_prompt) ? String(finalRes.image_prompt || finalRes.imagePrompt) : '';
        const videoPrompt = finalRes && (finalRes.videoPrompt || finalRes.video_prompt || finalRes.video_prompt) ? String(finalRes.videoPrompt || finalRes.video_prompt) : '';

        if (!imagePrompt || !videoPrompt) {
            throw new Error('Final LM output did not include image_prompt or videoPrompt');
        }

        logger.info(`Image prompt for ${imageForPrompt}:`, imagePrompt);
        logger.info(`Video prompt for ${imageForPrompt}:`, videoPrompt);

        return { pinUrl, imagePrompt, videoPrompt, imageFileName, renamedImagePaths, genre, subGenre, scene, action, camera };
    } catch (error) {
        logger.error(`Failed to get prompts for ${imageForPrompt}:`, error);
        for (const p of renamedImagePaths) {
            try {
                await fs.unlink(p);
            } catch (cleanupError) {
                // ignore
            }
        }
        return null;
    }
}

async function generateImageForTask(task: GenerationTask, server: { baseUrl: string; outputDir: string; }): Promise<string | null> {
    const { imagePrompt, imageFileName, renamedImagePaths } = task;
    const { baseUrl, outputDir } = server;
    const inputDir = outputDir.replace("output", "input");

    const sourceFileNames: string[] = [];
    try {
        if (USE_REFERENCE_IMAGE) {
            // Copy renamed source images to the server input directory
            for (const sourcePath of renamedImagePaths) {
                const fileName = path.basename(sourcePath);
                const destPath = path.join(inputDir, fileName);
                await fs.copyFile(sourcePath, destPath);
                sourceFileNames.push(fileName);
                logger.info(`Copied ${sourcePath} to ${destPath}`);
            }

            // generateImageMixStyle expects two source files; if we only have one, pass the same one twice
            const srcA = sourceFileNames[0];
            const srcB = sourceFileNames[1] || sourceFileNames[0];

            const generatedImagePath = await generateImageMixStyle(
                imagePrompt,
                srcA,
                srcB,
                imageFileName,
                baseUrl,
                outputDir,
                { width: 1280, height: 720 }
            );
            return generatedImagePath;
        } else {
            // Use Pinterest images only to create the prompt; generate final image using the single-image generator
            const generatedImagePath = await generateImage(
                imagePrompt,
                imageFileName,
                baseUrl,
                outputDir,
                'qwen',
                { width: 1280, height: 720 }
            );
            return generatedImagePath;
        }
    } catch (error) {
        logger.error(`Failed to generate image for ${imageFileName} on server ${baseUrl}:`, error);
        return null;
    } finally {
        // cleanup local renamed images and any files copied to the server input dir
        for (const sourcePath of renamedImagePaths) {
            try {
                await fs.unlink(sourcePath);
                logger.debug(`Deleted source image: ${sourcePath}`);
            } catch (error) {
                logger.error(`Failed to delete source image ${sourcePath}:`, error);
            }
        }
        for (const fileName of sourceFileNames) {
            try {
                const serverPath = path.join(inputDir, fileName);
                await fs.unlink(serverPath);
                logger.debug(`Deleted server image: ${serverPath}`);
            } catch (error) {
                logger.error(`Failed to delete server image ${fileName}:`, error);
            }
        }
    }
}

async function getPinUrlFromPinterest(keyword: string): Promise<string | null> {
    const browser = await puppeteer.launch({ headless: true });
    const page = await browser.newPage();
    await page.setUserAgent('Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36');
    await page.setViewport({ width: 1920, height: 1080 });
    try {
        const searchUrl = `https://www.pinterest.com/search/pins/?q=${encodeURIComponent(keyword)}`;
        await page.goto(searchUrl, { waitUntil: 'networkidle2' });

        const scrollCount = Math.floor(Math.random() * 5) + 1;
        logger.info(`Scrolling ${scrollCount} times...`);
        for (let i = 0; i < scrollCount; i++) {
            await page.evaluate('window.scrollTo(0, document.body.scrollHeight)');
            await new Promise(resolve => setTimeout(resolve, Math.random() * 1000 + 1000));
        }

        const pinLinks = await page.$$eval('a', (anchors) =>
            anchors.map((a) => a.href).filter((href) => href.includes('/pin/'))
        );

        if (pinLinks.length > 0) {
            return pinLinks[Math.floor(Math.random() * pinLinks.length)];
        }
        return null;
    } catch (error) {
        logger.error('Error while getting pin URL from Pinterest:', error);
        return null;
    } finally {
        await browser.close();
    }
}

(async () => {
    // Load pinterest keywords JSON, pick up to 20 subGenres and choose 1 pinId per subGenre
    const keywordsFilePath = path.resolve(process.cwd(), 'src', 'pinterest_keywords.json');
    let allKeywords: { genre: string; subGenre: string; pinIds?: string[]; pinId?: string[], videoInstructions?: string[] }[] = [];
    try {
        const raw = await fs.readFile(keywordsFilePath, 'utf-8');
        allKeywords = JSON.parse(raw);
    } catch (err) {
        logger.error('Failed to read pinterest keywords JSON:', err);
        return;
    }

    /*
    allKeywords = allKeywords.filter(a => {
        return (a.genre == "city" && a.subGenre == "Bridges") ||
            (a.genre == "city" && a.subGenre == "Castles") ||
            (a.genre == "city" && a.subGenre == "Cathedrals") ||
            (a.genre == "city" && a.subGenre == "Factories") ||
            (a.genre == "city" && a.subGenre == "Futuristic Cities") ||
            (a.genre == "city" && a.subGenre == "Historic Towns") ||
            (a.genre == "city" && a.subGenre == "Libraries") ||
            (a.genre == "city" && a.subGenre == "Markets") ||
            (a.genre == "city" && a.subGenre == "Modern Plazas") ||
            (a.genre == "city" && a.subGenre == "Museums") ||
            (a.genre == "city" && a.subGenre == "Palaces") ||
            (a.genre == "city" && a.subGenre == "Residential Blocks") ||
            (a.genre == "city" && a.subGenre == "Skylines") ||
            (a.genre == "city" && a.subGenre == "Stadiums") ||
            (a.genre == "city" && a.subGenre == "Street Cafes") ||
            (a.genre == "city" && a.subGenre == "Urban Parks") ||
            (a.genre == "city" && a.subGenre == "Skyscrapers") ||
            (a.genre == "city" && a.subGenre == "Slums")  
    });
    */
    allKeywords = allKeywords.filter(a => {
        return (a.genre == "epic")
    });

    function shuffle<T>(arr: T[]): T[] {
        for (let i = arr.length - 1; i > 0; i--) {
            const j = Math.floor(Math.random() * (i + 1));
            [arr[i], arr[j]] = [arr[j], arr[i]];
        }
        return arr;
    }

    //const selectedEntries = shuffle(allKeywords.slice()).slice(0, Math.min(20, allKeywords.length));
    const selectedEntries = allKeywords;

    // Download up to `count` images from a pin URL by opening the pin page and scro lling up to 5 times to trigger lazy loading
    // Returns an array of saved image paths (may be empty)
    async function downloadOneImageFromPin(pinUrl: string, count: number = 1): Promise<string[]> {
        const browser = await puppeteer.launch({ headless: false });
        const page = await browser.newPage();
        await page.setUserAgent('Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36');
        await page.setViewport({ width: 1920, height: 1080 });
        try {
            await page.goto(pinUrl, { waitUntil: 'networkidle2', timeout: 30000 });
            for (let i = 0; i < 3; i++) {
                await page.evaluate('window.scrollTo(0, document.body.scrollHeight)');
                await new Promise((r) => setTimeout(r, 700 + Math.random() * 800));
            }

            const imgs: string[] = await page.$$eval('img', imgs => {
                // For each <img> try to extract the 4x (original) URL from srcset.
                // srcset example:
                // "https://i.pinimg.com/236x/...jpg 1x, https://i.pinimg.com/474x/...jpg 2x, https://i.pinimg.com/736x/...jpg 3x, https://i.pinimg.com/originals/...jpg 4x"
                const urls: string[] = imgs.map(img => {
                    const srcset = (img as HTMLImageElement).getAttribute('srcset') || '';
                    if (!srcset) return '';
                    const parts = srcset.split(',').map(p => p.trim());
                    for (const part of parts) {
                        const m = part.match(/^(\S+)\s+4x$/);
                        if (m && m[1]) return m[1];
                    }
                    // fallback: if src contains "originals" return src
                    const src = (img as HTMLImageElement).src || '';
                    if (src.includes('/originals/')) return src;
                    return '';
                }).filter(s => !!s && s.includes('pinimg'));
                return urls;
            });

            if (!imgs || imgs.length === 0) {
                logger.warn(`No image src (4x) found on pin page ${pinUrl}`);
                return [];
            }

            // shuffle and pick up to `count` unique images
            const shuffled = imgs.slice().sort(() => 0.5 - Math.random());
            const chosen = shuffled.slice(0, Math.min(count, shuffled.length));

            const outDir = path.join(process.cwd(), 'download');
            await fs.mkdir(outDir, { recursive: true });

            const results: string[] = [];
            for (let i = 0; i < chosen.length; i++) {
                const src = chosen[i];
                try {
                    const imgPage = await browser.newPage();
                    const resp = await imgPage.goto(src, { timeout: 30000, waitUntil: 'networkidle2' });
                    if (!resp) {
                        logger.warn(`Failed to fetch image ${src} from ${pinUrl}`);
                        await imgPage.close();
                        continue;
                    }
                    const buffer = await resp.buffer();
                    const pinId = pinUrl.split('/').filter(Boolean).pop() || `pin_${Date.now()}`;
                    const timestamp = Date.now();
                    const outPath = path.join(outDir, `${pinId}_${timestamp}_${i}.png`);
                    await fs.writeFile(outPath, buffer);
                    results.push(outPath);
                    await imgPage.close();
                } catch (err) {
                    logger.error(`Failed to download image ${src} from ${pinUrl}:`, err);
                }
            }

            return results;
        } catch (err) {
            logger.error(`Failed to download images from ${pinUrl}:`, err);
            return [];
        } finally {
            await browser.close();
        }
    }

    const numberOfPinIds = Number(process.env.NUMBER_OF_PINIDS) || 20;
    // Build keywords list with single chosen pinId per selected subGenre
    const keywords: {
        genre: string; subGenre: string; pinIds: string[], videoInstructions?: string[]
    }[] = [];
    for (const entry of selectedEntries) {
        const pinIds = (entry.pinIds || entry.pinId) as string[] | undefined;
        if (!Array.isArray(pinIds) || pinIds.length === 0) continue;
        const chosenPinId = pinIds.splice(0, numberOfPinIds);
        keywords.push({ genre: entry.genre, subGenre: entry.subGenre, pinIds: chosenPinId, videoInstructions: entry.videoInstructions });
    }

    if (keywords.length === 0) {
        logger.error("No keywords/pinIds available from pinterest_keywords.json. Exiting.");
        return;
    }

    if (servers.length === 0) {
        logger.error("No servers configured. Please check your .env file.");
        return;
    }

    type pinIdsType = {
        pinId: string,
        genreSubGenre: { genre: string, subGenre: string, pinIds: string[], videoInstructions: string[] }
    };

    while (true) {

        const generationTasks: GenerationTask[] = [];
        const allPinIds: pinIdsType[] = keywords.reduce<pinIdsType[]>((acc, curr) => {
            const videoInstructions = curr.videoInstructions ?? [];
            for (const id of curr.pinIds ?? []) {
                acc.push({
                    pinId: id,
                    genreSubGenre: {
                        genre: curr.genre,
                        subGenre: curr.subGenre,
                        pinIds: curr.pinIds,
                        videoInstructions,
                    },
                });
            }
            return acc;
        }, []);
        const pickedUpPinIds: pinIdsType[] = shuffle(allPinIds).slice(0, 30);

        for (const row of pickedUpPinIds) {

            const { genreSubGenre, pinId } = row;
            const genre = genreSubGenre.genre;
            const subGenre = genreSubGenre.subGenre;

            const pin = `https://www.pinterest.com/pin/${pinId}/`;
            logger.info(`--- Starting processing for pin: ${pin} ---`);

            // download images from the pin page (pass desired count as second arg)
            const downloadedImagePaths = await downloadOneImageFromPin(pin, 20);
            if (!downloadedImagePaths || downloadedImagePaths.length === 0) {
                logger.warn(`No images were downloaded for pin ${pin}. Skipping.`);
                continue;
            }

            const selectedImages = downloadedImagePaths.sort(() => 0.5 - Math.random()).slice(0, 2);
            logger.info(`--- Downloaded ${selectedImages.length} image(s) for processing ---`);

            // proceed if we have at least one image
            if (selectedImages.length >= 1) {
                const task = await getPromptsForImage(selectedImages, pin, genre, subGenre, genreSubGenre.videoInstructions);
                if (task) {
                    task.videoInstructions = genreSubGenre.videoInstructions;
                    generationTasks.push(task);
                }
            } else {
                logger.warn(`Skipping pin ${pin} as it did not yield images.`);
                for (const imagePath of selectedImages) {
                    try {
                        await fs.unlink(imagePath);
                    } catch (error) {
                        logger.error(`Failed to delete image ${imagePath}:`, error);
                    }
                }
            }
        }

        // --- Image Generation Phase ---
        logger.info(`--- Starting image generation for ${generationTasks.length} tasks ---`);
        for (const task of generationTasks) {
            const server = servers[Math.floor(Math.random() * servers.length)];
            const imagePath = await generateImageForTask(task, server);
            if (imagePath) {
                task.generatedImagePath = imagePath;
            }
        }
        logger.info("--- Finished image generation ---");

        // --- Video Generation Phase ---
        logger.info(`--- Starting video generation for ${generationTasks.length} tasks ---`);
        for (const task of generationTasks) {
            if (!task.generatedImagePath) {
                logger.warn(`Skipping video generation for task ${task.imageFileName} as it has no generated image.`);
                continue;
            }

            const server = servers[Math.floor(Math.random() * servers.length)];
            const inputDir = server.outputDir.replace("output", "input");
            const generatedImageName = path.basename(task.generatedImagePath);
            const serverImagePath = path.join(inputDir, generatedImageName);

            try {
                await fs.copyFile(task.generatedImagePath, serverImagePath);
                logger.info(`Copied ${task.generatedImagePath} to ${serverImagePath}`);

                const videoFileName = task.imageFileName.replace('.png', '.mp4');
                const videoPath = await generateVideo(
                    task.videoPrompt,
                    generatedImageName,
                    videoFileName,
                    server.baseUrl,
                    server.outputDir,
                    { width: 1280, height: 720 }
                );

                if (videoPath) {
                    const videoData = {
                        genre: task.genre,
                        sub_genre: task.subGenre,
                        scene: task.scene,
                        action: task.action,
                        camera: task.camera,
                        image_prompt: task.imagePrompt,
                        video_prompt: task.videoPrompt,
                        image_path: task.generatedImagePath,
                        video_path: videoPath,
                    };
                    const videoId = await VideoModel.create(videoData);
                    logger.info(`Successfully saved video record to database with ID: ${videoId}`);

                    const newImageName = `${videoId}_${task.genre}_${task.subGenre}${path.extname(task.generatedImagePath)}`;
                    const newVideoName = `${videoId}_${task.genre}_${task.subGenre}${path.extname(videoPath)}`;

                    const newImagePath = path.join(path.dirname(task.generatedImagePath), newImageName);
                    const newVideoPath = path.join(path.dirname(videoPath), newVideoName);

                    await fs.rename(task.generatedImagePath, newImagePath);
                    await fs.rename(videoPath, newVideoPath);

                    await VideoModel.update(videoId, {
                        image_path: newImagePath,
                        video_path: newVideoPath,
                    });
                    logger.info(`Renamed files and updated database record for video ID: ${videoId}`);
                }
            } catch (error) {
                logger.error('An error occurred during video generation or database operations:', error);
            } finally {
                try {
                    await fs.unlink(serverImagePath);
                    logger.debug(`Deleted server image: ${serverImagePath}`);
                } catch (error) {
                    logger.error(`Failed to delete server image ${serverImagePath}:`, error);
                }
            }
        }
        logger.info("--- Finished video generation ---");

        if (RUN_ONCE) {
            logger.info('RUN_ONCE=true - exiting after a single iteration of generation.');
            return;
        }
    }
})();