"""
Comprehensive tests for app.py (Streamlit TIA-ARCHITECT-CORE)

Tests cover:
- Configuration and constants
- Environment variable checking
- Path management
- Data directory structure
"""
import pytest
import os
from pathlib import Path
from unittest.mock import Mock, patch, MagicMock
import sys

# Add parent directory to path
sys.path.insert(0, str(Path(__file__).parent.parent))


class TestAppConfiguration:
    """Test app.py configuration"""

    def test_identity_structure(self):
        """Test IDENTITY constant has correct structure"""
        # We can't easily import streamlit code, but we can test the structure
        # by reading the file
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'IDENTITY' in content
        assert '"name": "T.I.A."' in content
        assert '"version"' in content
        assert '"github"' in content
        assert '"huggingface"' in content

    def test_page_config_present(self):
        """Test that page config is set"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'st.set_page_config' in content
        assert 'page_title' in content
        assert 'TIA-ARCHITECT-CORE' in content

    def test_required_imports(self):
        """Test that required imports are present"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        required_imports = [
            'import streamlit as st',
            'from pathlib import Path',
            'from datetime import datetime',
            'import json',
            'import sys',
            'import os'
        ]

        for imp in required_imports:
            assert imp in content

    def test_tabs_defined(self):
        """Test that all tabs are defined"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        expected_tabs = [
            '🏠 Dashboard',
            '🤖 Models',
            '⚙️ Workers',
            '📚 Knowledge Base',
            '🔧 Tools'
        ]

        for tab in expected_tabs:
            assert tab in content


class TestEnvironmentVariables:
    """Test environment variable handling"""

    def test_env_vars_checked(self):
        """Test that environment variables are checked"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        expected_env_vars = [
            'HF_TOKEN',
            'GITHUB_TOKEN',
            'GOOGLE_API_KEY'
        ]

        for var in expected_env_vars:
            assert var in content

    def test_env_status_dict(self):
        """Test that env_status dict is created"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'env_status' in content
        assert 'os.getenv' in content


class TestDataDirectories:
    """Test data directory structure"""

    def test_data_paths_defined(self):
        """Test that data paths are defined"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'data_dir' in content or 'Path("data")' in content
        assert 'models_dir' in content or 'models' in content
        assert 'workers_dir' in content or 'workers' in content

    def test_manifest_files_referenced(self):
        """Test that manifest files are referenced"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'models_manifest' in content or 'models_manifest.json' in content
        assert 'workers_manifest' in content or 'workers_manifest.json' in content


class TestDistrictTopology:
    """Test district topology configuration"""

    def test_districts_defined(self):
        """Test that districts are defined"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        expected_districts = ['D01', 'D02', 'D03', 'D04', 'D05', 'D06']

        for district in expected_districts:
            assert district in content

    def test_district_descriptions(self):
        """Test that district descriptions exist"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        expected_descriptions = [
            'Core Infrastructure',
            'Data Processing',
            'Security',
            'ML Models',
            'API'
        ]

        for desc in expected_descriptions:
            assert desc in content


class TestUIComponents:
    """Test UI components and structure"""

    def test_sidebar_elements(self):
        """Test that sidebar elements are defined"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'st.sidebar' in content or 'with st.sidebar' in content
        assert 'System Status' in content

    def test_metrics_defined(self):
        """Test that metrics are displayed"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'st.metric' in content

    def test_tabs_structure(self):
        """Test that tabs are properly structured"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'st.tabs' in content
        assert 'with tab1' in content or 'with tab' in content


class TestModelsRegistry:
    """Test models registry integration"""

    def test_models_manifest_loading(self):
        """Test that models manifest loading is implemented"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'models_manifest_path' in content or 'models_manifest.json' in content
        assert 'json.load' in content

    def test_model_categories_display(self):
        """Test that model categories are displayed"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'categories' in content
        assert 'st.expander' in content


class TestWorkersConstellation:
    """Test workers constellation integration"""

    def test_workers_manifest_loading(self):
        """Test that workers manifest loading is implemented"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'workers_manifest' in content or 'workers_manifest.json' in content

    def test_worker_types_referenced(self):
        """Test that worker types are referenced"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'Apps Script' in content or 'Worker Watchdog' in content


class TestRAGSystem:
    """Test RAG system integration"""

    def test_rag_references(self):
        """Test that RAG system is referenced"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'RAG' in content or 'Knowledge Base' in content

    def test_oracle_engine(self):
        """Test that Oracle engine is referenced"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'Oracle' in content


class TestToolsAndUtilities:
    """Test tools and utilities section"""

    def test_system_information(self):
        """Test that system information is displayed"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'sys.version' in content or 'Python Version' in content
        assert 'os.getcwd' in content or 'Working Directory' in content

    def test_quick_actions(self):
        """Test that quick actions are defined"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'st.button' in content

    def test_config_export(self):
        """Test that config export is implemented"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'download_button' in content or 'Export Config' in content


class TestIntegration:
    """Integration tests for app.py"""

    def test_app_structure_complete(self):
        """Test that app has complete structure"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        # Check all major sections exist
        sections = [
            'PAGE CONFIGURATION',
            'IDENTITY',
            'SIDEBAR',
            'MAIN DASHBOARD',
            'TAB 1',
            'TAB 2',
            'TAB 3',
            'TAB 4',
            'TAB 5',
            'FOOTER'
        ]

        for section in sections:
            assert section in content

    def test_no_duplicate_page_config(self):
        """Test that st.set_page_config is called only once"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        # Should only appear once
        count = content.count('st.set_page_config')
        assert count == 1

    def test_double_n_rift_referenced(self):
        """Test that Double-N Rift is referenced"""
        app_path = Path(__file__).parent.parent / "app.py"
        content = app_path.read_text()

        assert 'DJ-Goana-Coding' in content  # Single N
        assert 'DJ-Goanna-Coding' in content  # Double N