Autonomous-Bug-Explorer/dist/modules/visual-regression/infrastructure/adapters/VisualRegressionAdapter.js

"use strict";
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    Object.defineProperty(o, "default", { enumerable: true, value: v });
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var __importStar = (this && this.__importStar) || (function () {
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        ownKeys = Object.getOwnPropertyNames || function (o) {
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Object.defineProperty(exports, "__esModule", { value: true });
exports.VisualRegressionAdapter = exports.DEFAULT_VISUAL_CONFIG = void 0;
/**
 * VisualRegressionAdapter — wraps screenshot comparison logic.
 * Uses IStorageProvider for persisting diff images instead of direct fs calls.
 */
const crypto = __importStar(require("crypto"));
const path = __importStar(require("path"));
const VisualComparison_1 = require("../../domain/entities/VisualComparison");
const ComparisonStatus_1 = require("../../domain/value-objects/ComparisonStatus");
exports.DEFAULT_VISUAL_CONFIG = {
    enabled: true,
    threshold: 0.001,
    screenshotFullPage: false,
    ignoreSelectors: [],
};
async function compareScreenshots(baselinePath, currentPath, threshold) {
    const sharp = (await Promise.resolve().then(() => __importStar(require('sharp')))).default;
    const pixelmatch = (await Promise.resolve().then(() => __importStar(require('pixelmatch')))).default;
    const [baselineRaw, currentRaw] = await Promise.all([
        sharp(baselinePath).resize(1280, 720).raw().toBuffer({ resolveWithObject: true }),
        sharp(currentPath).resize(1280, 720).raw().toBuffer({ resolveWithObject: true }),
    ]);
    const { width, height } = baselineRaw.info;
    const diffBuffer = Buffer.alloc(width * height * 4);
    const diffPixels = pixelmatch(baselineRaw.data, currentRaw.data, diffBuffer, width, height, { threshold });
    const totalPixels = width * height;
    const diffPercent = totalPixels > 0 ? diffPixels / totalPixels : 0;
    // Encode diff as PNG
    const pngBuffer = await sharp(diffBuffer, { raw: { width, height, channels: 4 } })
        .png()
        .toBuffer();
    return { diffPixels, diffPercent, diffBuffer: pngBuffer, width, height };
}
class VisualRegressionAdapter {
    constructor(storage, baselineRepo, comparisonRepo, eventBus, config = {}) {
        this.storage = storage;
        this.baselineRepo = baselineRepo;
        this.comparisonRepo = comparisonRepo;
        this.eventBus = eventBus;
        this.config = { ...exports.DEFAULT_VISUAL_CONFIG, ...config };
    }
    async processScreenshot(screenshotPath, state, sessionId, actionTrace) {
        if (!this.config.enabled)
            return null;
        const comparisonId = crypto.randomUUID();
        const baseline = await this.baselineRepo.findByStateId(state.id);
        if (!baseline) {
            const comparison = VisualComparison_1.VisualComparison.create({
                sessionId,
                stateId: state.id,
                baselineId: null,
                currentScreenshotPath: screenshotPath,
                diffScreenshotPath: null,
                diffPixels: null,
                diffPercent: null,
                status: ComparisonStatus_1.ComparisonStatus.newState(),
            });
            await this.comparisonRepo.save(comparison);
            return null;
        }
        let diffPixels = 0;
        let diffPercent = 0;
        let diffScreenshotPath = null;
        try {
            const result = await compareScreenshots(baseline.screenshotPath, screenshotPath, this.config.threshold);
            diffPixels = result.diffPixels;
            diffPercent = result.diffPercent;
            if (diffPixels > 0) {
                const diffRelativePath = path.join('visual', comparisonId, 'diff.png');
                diffScreenshotPath = await this.storage.save(diffRelativePath, result.diffBuffer);
            }
        }
        catch {
            return null;
        }
        const hasFailed = diffPercent > this.config.threshold;
        const status = hasFailed ? ComparisonStatus_1.ComparisonStatus.failed() : ComparisonStatus_1.ComparisonStatus.passed();
        const comparison = VisualComparison_1.VisualComparison.create({
            sessionId,
            stateId: state.id,
            baselineId: baseline.id.toString(),
            currentScreenshotPath: screenshotPath,
            diffScreenshotPath,
            diffPixels,
            diffPercent,
            status,
        });
        await this.comparisonRepo.save(comparison);
        // Publish domain events
        for (const event of comparison.domainEvents) {
            await this.eventBus.publish(event);
        }
        comparison.clearEvents();
        if (!hasFailed)
            return null;
        const pct = diffPercent * 100;
        let severity;
        if (pct > 15)
            severity = 'critical';
        else if (pct > 5)
            severity = 'high';
        else if (pct > 1)
            severity = 'medium';
        else
            severity = 'low';
        const anomaly = {
            id: crypto.randomUUID(),
            type: 'visual_regression',
            severity,
            observationId: state.id,
            actionTrace,
            description: `Visual regression detected: ${pct.toFixed(2)}% of pixels changed`,
            evidence: {
                screenshotPath: diffScreenshotPath ?? screenshotPath,
                rawErrors: [`Diff: ${diffPixels} pixels (${pct.toFixed(2)}%)`],
            },
            timestamp: Date.now(),
        };
        return anomaly;
    }
}
exports.VisualRegressionAdapter = VisualRegressionAdapter;