"""
E2E Tests for Free Version Feature Restrictions

These tests specify the expected behavior when VERSION_TYPE="free".
They validate that free version users:
1. Can use basic features (text generation, preview)
2. CANNOT access PRO features (shaders, presets, overlays, normal maps)
3. Maintain concurrency cap (max_concurrent=1) without texture size limits
4. See UI locks/badges on PRO features

TESTING STRATEGY:
- Tests detect current VERSION_TYPE from running addon
- If VERSION_TYPE="full": tests SKIP (documented as specification)
- If VERSION_TYPE="free": tests RUN and validate restrictions
- Tests use NO MOCKS - only real Blender bpy API operations

EXPECTED BEHAVIOR (FREE VERSION):
- ENABLED_FEATURES = ["basic", "preview"] only
- BLOCKED: shader_generation, normal_maps, image_overlays, presets, advanced
- LIMITS: Unlimited texture size, max_concurrent_operations=1
- UI: Shows "🔒 PRO" badges on locked features
"""

import json
import pytest
from pathlib import Path
import tarfile
import io


pytestmark = pytest.mark.e2e


def get_version_type(blender_container, addon_package):
    """Detect VERSION_TYPE from running addon."""
    script_content = """
import bpy
import sys
import json

# Enable addon
try:
    bpy.ops.preferences.addon_enable(module='text_texture_generator')
except Exception as e:
    print(f"ERROR enabling addon: {e}")
    sys.exit(1)

# Import constants
try:
    from text_texture_generator.utils.constants import VERSION_TYPE, ENABLED_FEATURES
    result = {
        'version_type': VERSION_TYPE,
        'enabled_features': ENABLED_FEATURES
    }
    print('RESULT:', json.dumps(result))
except Exception as e:
    print(f"ERROR importing constants: {e}")
    sys.exit(1)
"""
    
    # Create tar with script
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='detect_version.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    # Copy addon package
    addon_tar_stream = io.BytesIO()
    with tarfile.open(fileobj=addon_tar_stream, mode='w') as tar:
        addon_info = tarfile.TarInfo(name='text_texture_generator.zip')
        addon_info.size = addon_package.stat().st_size
        with open(addon_package, 'rb') as f:
            tar.addfile(addon_info, f)
    
    addon_tar_stream.seek(0)
    blender_container.put_archive('/addon-test', addon_tar_stream)
    
    # Install addon
    install_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python-expr",
        (
            "import bpy; "
            "bpy.ops.preferences.addon_install(filepath='/addon-test/text_texture_generator.zip'); "
            "bpy.ops.preferences.addon_enable(module='text_texture_generator'); "
            "bpy.ops.wm.save_userpref()"
        )
    ]
    
    install_result = blender_container.exec_run(install_cmd, workdir="/addon-test")
    assert install_result.exit_code == 0, f"Addon install failed: {install_result.output.decode()}"
    
    # Run detection script
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/detect_version.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    # Parse version info
    for line in output.split('\n'):
        if 'RESULT:' in line:
            data = json.loads(line.split('RESULT:')[1].strip())
            return data['version_type'], data['enabled_features']
    
    pytest.fail(f"Could not detect VERSION_TYPE from addon output:\n{output}")


def test_free_version_basic_features_work(blender_container, addon_package):
    """
    SPECIFICATION: Free version MUST allow basic text-to-texture generation.
    
    Expected behavior (VERSION_TYPE="free"):
    - Text input works
    - Material creation works
    - Preview generation works
    - "basic" feature is enabled
    
    Current state (VERSION_TYPE="full"):
    - Test SKIPS (marked as specification for future)
    """
    version_type, enabled_features = get_version_type(blender_container, addon_package)
    
    if version_type == "full":
        pytest.skip("Test requires VERSION_TYPE='free' - currently 'full' (specification test)")
    
    # Test basic generation works
    script_content = """
import bpy
import sys

# Addon already enabled by get_version_type

# Verify basic feature enabled
from text_texture_generator.utils.constants import ENABLED_FEATURES
assert "basic" in ENABLED_FEATURES, f"'basic' not in ENABLED_FEATURES: {ENABLED_FEATURES}"

# Create test object
bpy.ops.mesh.primitive_cube_add()
obj = bpy.context.active_object

# Try basic generation
props = bpy.context.scene.text_texture_props
props.text = "Free Version Test"
props.texture_width = 512
props.texture_height = 512  # Within free limit
props.auto_assign_material = True

try:
    bpy.ops.text_texture.generate_shader()
    mat = obj.active_material
    assert mat is not None, "Material not created"
    print("SUCCESS: Basic generation works in free version")
except Exception as e:
    print(f"FAIL: Basic generation failed: {e}")
    sys.exit(1)
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_basic.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_basic.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    assert test_result.exit_code == 0, f"Basic generation failed:\n{output}"
    assert "SUCCESS: Basic generation works" in output


def test_free_version_blocks_shader_generation(blender_container, addon_package):
    """
    SPECIFICATION: Free version MUST block shader generation feature.
    
    Expected behavior (VERSION_TYPE="free"):
    - "shader_generation" NOT in ENABLED_FEATURES
    - Shader properties unavailable or restricted
    - UI shows "🔒 PRO" badge
    
    Current state (VERSION_TYPE="full"):
    - Test SKIPS (shader_generation is available)
    """
    version_type, enabled_features = get_version_type(blender_container, addon_package)
    
    if version_type == "full":
        pytest.skip("Test requires VERSION_TYPE='free' - currently 'full' (specification test)")
    
    script_content = """
import bpy
import sys

# Verify shader_generation NOT enabled
from text_texture_generator.utils.constants import ENABLED_FEATURES
if "shader_generation" in ENABLED_FEATURES:
    print(f"FAIL: shader_generation should NOT be in ENABLED_FEATURES for free version")
    sys.exit(1)

print("SUCCESS: Shader generation properly blocked")
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_shader.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_shader.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    assert test_result.exit_code == 0, f"Shader block test failed:\n{output}"
    assert "SUCCESS: Shader generation properly blocked" in output


def test_free_version_blocks_presets(blender_container, addon_package):
    """
    SPECIFICATION: Free version MUST block preset save/load functionality.
    
    Expected behavior (VERSION_TYPE="free"):
    - "presets" NOT in ENABLED_FEATURES
    - Preset operators unavailable
    - UI shows "🔒 PRO" on preset buttons
    
    Current state (VERSION_TYPE="full"):
    - Test SKIPS (presets are available)
    """
    version_type, enabled_features = get_version_type(blender_container, addon_package)
    
    if version_type == "full":
        pytest.skip("Test requires VERSION_TYPE='free' - currently 'full' (specification test)")
    
    script_content = """
import bpy
import sys

# Verify presets NOT enabled
from text_texture_generator.utils.constants import ENABLED_FEATURES
if "presets" in ENABLED_FEATURES:
    print(f"FAIL: presets should NOT be in ENABLED_FEATURES for free version")
    sys.exit(1)

print("SUCCESS: Preset functionality properly blocked")
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_presets.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_presets.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    assert test_result.exit_code == 0, f"Preset block test failed:\n{output}"
    assert "SUCCESS: Preset functionality properly blocked" in output


def test_free_version_blocks_image_overlays(blender_container, addon_package):
    """
    SPECIFICATION: Free version MUST block image overlay functionality.
    
    Expected behavior (VERSION_TYPE="free"):
    - "image_overlays" NOT in ENABLED_FEATURES
    - Overlay controls unavailable
    - UI shows "🔒 PRO" on overlay controls
    
    Current state (VERSION_TYPE="full"):
    - Test SKIPS (overlays are available)
    """
    version_type, enabled_features = get_version_type(blender_container, addon_package)
    
    if version_type == "full":
        pytest.skip("Test requires VERSION_TYPE='free' - currently 'full' (specification test)")
    
    script_content = """
import bpy
import sys

# Verify image_overlays NOT enabled
from text_texture_generator.utils.constants import ENABLED_FEATURES
if "image_overlays" in ENABLED_FEATURES:
    print(f"FAIL: image_overlays should NOT be in ENABLED_FEATURES for free version")
    sys.exit(1)

print("SUCCESS: Image overlay properly blocked")
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_overlays.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_overlays.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    assert test_result.exit_code == 0, f"Overlay block test failed:\n{output}"


def test_free_version_blocks_text_fitting(blender_container, addon_package):
    """
    SPECIFICATION: Free version MUST block text fitting functionality.
    
    Expected behavior (VERSION_TYPE="free"):
    - "text_fitting" NOT in ENABLED_FEATURES
    - has_text_fitting() returns False
    - Text fitting controls unavailable
    - UI shows "🔒 PRO" on text fitting controls
    
    Current state (VERSION_TYPE="full"):
    - Test SKIPS (text_fitting is available)
    """
    version_type, enabled_features = get_version_type(blender_container, addon_package)
    
    if version_type == "full":
        pytest.skip("Test requires VERSION_TYPE='free' - currently 'full' (specification test)")
    
    script_content = """
import bpy
import sys

# Verify text_fitting NOT enabled
from text_texture_generator.utils.constants import ENABLED_FEATURES, has_text_fitting
if "text_fitting" in ENABLED_FEATURES:
    print(f"FAIL: text_fitting should NOT be in ENABLED_FEATURES for free version")
    sys.exit(1)

# Verify has_text_fitting() returns False
if has_text_fitting():
    print(f"FAIL: has_text_fitting() should return False for free version")
    sys.exit(1)

print("SUCCESS: Text fitting properly blocked")
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_text_fitting.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_text_fitting.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    assert test_result.exit_code == 0, f"Text fitting block test failed:\n{output}"
    assert "SUCCESS: Text fitting properly blocked" in output


def test_free_version_allows_large_textures(blender_container, addon_package):
    """
    SPECIFICATION UPDATE: Free version should allow large texture dimensions without artificial caps.
    
    Expected behavior (VERSION_TYPE="free"):
    - get_version_limits() does NOT define 'max_texture_size'
    - Generating a 4096px texture succeeds without clamping
    - UI should allow entering high-resolution values
    
    Current state (VERSION_TYPE="full"):
    - Test SKIPS (runs only when free build is active)
    
    **PREVIOUS BUG**: get_version_limits() returned identical caps for both versions.
    """
    version_type, enabled_features = get_version_type(blender_container, addon_package)
    
    if version_type == "full":
        pytest.skip("Test requires VERSION_TYPE='free' - currently 'full' (specification test)")
    
    script_content = """
import bpy
import sys

# Check version limits
from text_texture_generator.utils.constants import get_version_limits
limits = get_version_limits()

# Ensure no artificial texture size cap is reported
max_size = limits.get('max_texture_size')
if max_size:
    print(f"FAIL: Expected no texture size cap, got {max_size}")
    sys.exit(1)

# Attempt a large texture generation
props = bpy.context.scene.text_texture_props
props.text = "High Resolution Test"
props.texture_width = 4096
props.texture_height = 4096

try:
    bpy.ops.text_texture.generate_shader()
    if props.texture_width != 4096 or props.texture_height != 4096:
        print(f"FAIL: Texture dimensions were clamped to {props.texture_width}x{props.texture_height}")
        sys.exit(1)
    print("SUCCESS: Large texture generated without limits")
except Exception as e:
    print(f"FAIL: Large texture generation failed: {e}")
    sys.exit(1)
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_size.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_size.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    # This test WILL FAIL because get_version_limits() has the bug
    assert test_result.exit_code == 0, f"Size limit test failed:\n{output}"
    assert "SUCCESS: Large texture generated without limits" in output


def test_free_version_ui_shows_pro_locks(blender_container, addon_package):
    """
    SPECIFICATION: Free version UI MUST show correct feature flags.
    
    Expected behavior (VERSION_TYPE="free"):
    - has_feature() returns False for locked features
    - has_feature() returns True for basic/preview only
    - UI can check these flags to show "🔒 PRO" badges
    
    Current state (VERSION_TYPE="full"):
    - Test SKIPS (all features unlocked)
    """
    version_type, enabled_features = get_version_type(blender_container, addon_package)
    
    if version_type == "full":
        pytest.skip("Test requires VERSION_TYPE='free' - currently 'full' (specification test)")
    
    script_content = """
import bpy
import sys

# Check feature flags
from text_texture_generator.utils.constants import has_feature

# Verify locked features return False
locked_features = ["shader_generation", "presets", "image_overlays", "normal_maps"]
failed = []

for feature in locked_features:
    if has_feature(feature):
        failed.append(feature)

if failed:
    print(f"FAIL: These features should be locked but aren't: {failed}")
    sys.exit(1)

# Verify enabled features return True
enabled_features = ["basic", "preview"]
not_enabled = []

for feature in enabled_features:
    if not has_feature(feature):
        not_enabled.append(feature)

if not_enabled:
    print(f"FAIL: These features should be enabled but aren't: {not_enabled}")
    sys.exit(1)

print("SUCCESS: Feature flags correctly configured for free version")
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_flags.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_flags.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    assert test_result.exit_code == 0, f"Feature flags test failed:\n{output}"
    assert "SUCCESS: Feature flags correctly configured" in output


def test_free_version_concurrent_operations_limited(blender_container, addon_package):
    """
    SPECIFICATION: Free version MUST limit max_concurrent_operations to 1 (not 4).
    
    Expected behavior (VERSION_TYPE="free"):
    - get_version_limits()['max_concurrent_operations'] == 1
    - Cannot queue multiple operations simultaneously
    
    Current state (VERSION_TYPE="full"):
    - Test SKIPS (max_concurrent is 4)
    
    **CRITICAL BUG**: get_version_limits() currently returns same values for both versions!
    """
    version_type, enabled_features = get_version_type(blender_container, addon_package)
    
    if version_type == "full":
        pytest.skip("Test requires VERSION_TYPE='free' - currently 'full' (specification test)")
    
    script_content = """
import bpy
import sys

# Check version limits
from text_texture_generator.utils.constants import get_version_limits
limits = get_version_limits()

# CRITICAL: This is the BUG - get_version_limits() returns same for both versions!
max_concurrent = limits.get('max_concurrent_operations', 4)
if max_concurrent != 1:
    print(f"FAIL: max_concurrent_operations should be 1 for free version, got {max_concurrent}")
    sys.exit(1)

print(f"SUCCESS: max_concurrent_operations correctly limited to {max_concurrent}")
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_concurrent.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_concurrent.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    # This test WILL FAIL because get_version_limits() has the bug
    assert test_result.exit_code == 0, f"Concurrent limit test failed:\n{output}"
    assert "SUCCESS: max_concurrent_operations correctly limited to 1" in output


def test_free_version_strips_newlines_from_multiline_text(blender_container, addon_package):
    """
    SPECIFICATION: FREE version must strip newlines during text processing.
    
    Expected behavior (VERSION_TYPE="free"):
    - process_text_content() strips \\n from input text
    - "Line 1\\nLine 2\\nLine 3" becomes "Line 1 Line 2 Line 3"
    - Newlines replaced with spaces, consecutive spaces normalized
    
    Current state:
    - process_text_content() exists and works correctly (unit tested)
    - BUT: Not yet called in generation pipeline
    - Test WILL FAIL until integration is complete
    """
    version_type, enabled_features = get_version_type(blender_container, addon_package)
    
    if version_type == "full":
        pytest.skip("Test requires VERSION_TYPE='free' - currently 'full' (specification test)")
    
    script_content = """
import bpy
import sys

# Test text processing directly
from text_texture_generator.core.text_processor import process_text_content

input_text = "Line 1\\nLine 2\\nLine 3"
expected = "Line 1 Line 2 Line 3"

result = process_text_content(input_text)

if result != expected:
    print(f"FAIL: Expected '{expected}', got '{result}'")
    sys.exit(1)

if "\\n" in result:
    print(f"FAIL: Result should not contain newlines, got: {result}")
    sys.exit(1)

print("SUCCESS: Multiline text correctly stripped to single line")
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_newline_strip.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_newline_strip.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    assert test_result.exit_code == 0, f"Newline strip test failed:\n{output}"
    assert "SUCCESS: Multiline text correctly stripped" in output


def test_free_version_handles_multiple_consecutive_newlines(blender_container, addon_package):
    """
    SPECIFICATION: FREE version must collapse multiple consecutive newlines.
    
    Expected behavior (VERSION_TYPE="free"):
    - process_text_content() collapses multiple newlines
    - "Hello\\n\\n\\nWorld" becomes "Hello World"
    - Consecutive spaces normalized to single space
    
    Current state:
    - process_text_content() exists and works correctly (unit tested)
    - Test verifies the function behavior directly
    """
    version_type, enabled_features = get_version_type(blender_container, addon_package)
    
    if version_type == "full":
        pytest.skip("Test requires VERSION_TYPE='free' - currently 'full' (specification test)")
    
    script_content = """
import bpy
import sys

from text_texture_generator.core.text_processor import process_text_content

input_text = "Hello\\n\\n\\nWorld"
expected = "Hello World"

result = process_text_content(input_text)

if result != expected:
    print(f"FAIL: Expected '{expected}', got '{result}'")
    sys.exit(1)

if "\\n" in result:
    print(f"FAIL: Result should not contain newlines, got: {result}")
    sys.exit(1)

print("SUCCESS: Multiple newlines correctly collapsed")
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_multi_newline.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_multi_newline.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    assert test_result.exit_code == 0, f"Multiple newline test failed:\n{output}"
    assert "SUCCESS: Multiple newlines correctly collapsed" in output


def test_free_version_preserves_single_line_text(blender_container, addon_package):
    """
    SPECIFICATION: FREE version should leave single-line text unchanged.
    
    Expected behavior (VERSION_TYPE="free"):
    - process_text_content() preserves text without newlines
    - "No newlines here" remains "No newlines here"
    - No modification when input is already single-line
    
    Current state:
    - process_text_content() exists and works correctly (unit tested)
    - Test verifies the function behavior directly
    """
    version_type, enabled_features = get_version_type(blender_container, addon_package)
    
    if version_type == "full":
        pytest.skip("Test requires VERSION_TYPE='free' - currently 'full' (specification test)")
    
    script_content = """
import bpy
import sys

from text_texture_generator.core.text_processor import process_text_content

input_text = "No newlines here"
expected = "No newlines here"

result = process_text_content(input_text)

if result != expected:
    print(f"FAIL: Expected '{expected}', got '{result}'")
    sys.exit(1)

if "\\n" in result:
    print(f"FAIL: Result should not contain newlines")
    sys.exit(1)

print("SUCCESS: Single-line text remains unchanged")
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_single_line.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_single_line.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    assert test_result.exit_code == 0, f"Single-line test failed:\n{output}"


def test_free_version_no_multiline_artifacts(blender_container, addon_package):
    """
    SPECIFICATION: Multiline feature must be absent from the addon.
    
    This verification runs inside Blender to ensure that stale helpers or
    operators are not exposed through the package API.
    """
    script_content = """
import sys

def fail(msg):
    print(f"FAIL: {msg}")
    sys.exit(1)

# has_multiline_text helper must be gone
try:
    from text_texture_generator.utils.constants import has_multiline_text
    fail("has_multiline_text() helper is still importable")
except ImportError:
    print("SUCCESS: has_multiline_text helper removed")

# Legacy multiline operator must also be absent
try:
    from text_texture_generator import TEXT_TEXTURE_OT_edit_multiline_text
    fail("TEXT_TEXTURE_OT_edit_multiline_text is still exposed")
except ImportError:
    print("SUCCESS: Multiline editor operator removed")
"""
    
    tar_stream = io.BytesIO()
    with tarfile.open(fileobj=tar_stream, mode='w') as tar:
        script_info = tarfile.TarInfo(name='test_editor_poll.py')
        script_bytes = script_content.encode('utf-8')
        script_info.size = len(script_bytes)
        tar.addfile(script_info, io.BytesIO(script_bytes))
    
    tar_stream.seek(0)
    blender_container.put_archive('/addon-test', tar_stream)
    
    test_cmd = [
        "/usr/local/bin/run_blender.sh",
        "--background",
        "--python",
        "/addon-test/test_editor_poll.py"
    ]
    
    test_result = blender_container.exec_run(test_cmd, workdir="/addon-test")
    output = test_result.output.decode('utf-8', errors='replace')
    
    assert test_result.exit_code == 0, f"Operator poll test failed:\n{output}"
    assert "SUCCESS: has_multiline_text helper removed" in output
    assert "SUCCESS: Multiline editor operator removed" in output