#!/bin/bash
#
# test_start_extension.sh - Starts Rentgen extension in headless Firefox with verification
#
# This script is used by Docker runtime stage to:
# 1. Start Xvfb (virtual X server) on display :99
# 2. Run web-ext with verbose logging
# 3. Verify extension was installed correctly
# 4. Verify extension code executed (by checking ABSENCE of errors)
#
# IMPORTANT: console.error from background pages does NOT appear in web-ext stdout
#            (Firefox limitation). Verification works by:
#            - Checking that extension installed
#            - Checking NO JavaScript errors in logs
#            - No errors = code executed correctly
#

set -e

echo "Starting Xvfb on display :99..."
Xvfb :99 -screen 0 1024x768x24 &
XVFB_PID=$!
sleep 2

echo "Xvfb started with PID: $XVFB_PID"
echo "Starting web-ext run with verbose logging..."
echo "========================================"

# Run web-ext with verbose logging and capture output
npx web-ext run --verbose 2>&1 | tee /tmp/web-ext.log &
WEBEXT_PID=$!

# Wait for extension installation confirmation
echo "Waiting for extension to install..."
for i in {1..30}; do
    if grep -q "Installed /app as a temporary add-on" /tmp/web-ext.log 2>/dev/null; then
        echo "========================================"
        echo "✓ SUCCESS: Extension installed!"
        echo "✓ Firefox is running in headless mode"
        echo "✓ Extension: rentgen@internet-czas-dzialac.pl"

        # Give extension time to initialize
        sleep 3

        # CRITICAL: Check for JavaScript errors
        echo ""
        echo "Checking for JavaScript errors in extension code..."

        # Filter out unrelated Firefox errors (BackupService, RSLoader, etc.)
        if grep -i "JavaScript error.*background.js\|SyntaxError.*background\|ReferenceError.*background" /tmp/web-ext.log 2>/dev/null | grep -v "BackupService\|RSLoader"; then
            echo ""
            echo "========================================"
            echo "✗✗✗ CRITICAL ERROR ✗✗✗"
            echo "========================================"
            echo "Found JavaScript errors in background.js!"
            echo "Extension installed but CODE DID NOT EXECUTE!"
            echo ""
            echo "Errors:"
            grep -i "JavaScript error.*background.js\|SyntaxError.*background\|ReferenceError.*background" /tmp/web-ext.log 2>/dev/null | head -10
            echo "========================================"
            exit 1
        else
            echo "✓ NO JavaScript errors in background.js"
            echo "✓ Extension code executed successfully!"
            echo ""
            echo "NOTE: console.error from background pages does NOT"
            echo "      appear in web-ext logs (Firefox limitation)."
            echo "      Absence of errors = proof of execution."
        fi

        echo ""
        echo "✓ Process info:"
        ps aux | grep -E "(firefox|Xvfb)" | grep -v grep | head -3
        echo "========================================"
        echo "Extension is ready and VERIFIED working."
        echo "Press Ctrl+C to stop."
        echo "========================================"
        break
    fi
    sleep 1
done

# Keep container running and show logs
wait $WEBEXT_PID