"""Unit tests for Job entity and repository with external job ID support."""
import pytest
import asyncio
from datetime import datetime, timedelta
from domain.entities.job import Job
from domain.exceptions.domain_exceptions import DuplicateExternalJobIdError, ValidationError
from domain.services.validation_service import ValidationService
from infrastructure.repositories.job_repository import InMemoryJobRepository, JobRecord


class TestJobEntityWithExternalId:
    """Test Job entity with external job ID and bearer token support."""
    
    def test_job_creation_with_external_id(self):
        """Test creating a job with external job ID."""
        job = Job.create_new(
            video_filename="test.mp4",
            file_size_bytes=1000000,
            output_format="mp3",
            quality="medium",
            external_job_id="ext-job-123",
            bearer_token="bearer-token-xyz"
        )
        
        assert job.external_job_id == "ext-job-123"
        assert job.bearer_token == "bearer-token-xyz"
        assert job.has_external_job_id is True
        assert job.id is not None  # Internal ID still generated
    
    def test_job_creation_without_external_id(self):
        """Test creating a job without external job ID (backwards compatibility)."""
        job = Job.create_new(
            video_filename="test.mp4",
            file_size_bytes=1000000,
            output_format="mp3",
            quality="medium"
        )
        
        assert job.external_job_id is None
        assert job.bearer_token is None
        assert job.has_external_job_id is False
        assert job.id is not None  # Internal ID still generated
    
    def test_job_creation_with_empty_external_id(self):
        """Test creating a job with empty external job ID."""
        job = Job.create_new(
            video_filename="test.mp4",
            file_size_bytes=1000000,
            output_format="mp3",
            quality="medium",
            external_job_id="",
            bearer_token=None
        )
        
        assert job.external_job_id == ""
        assert job.has_external_job_id is False
    
    def test_clear_bearer_token(self):
        """Test clearing bearer token for security."""
        job = Job.create_new(
            video_filename="test.mp4",
            file_size_bytes=1000000,
            output_format="mp3",
            quality="medium",
            bearer_token="secret-token"
        )
        
        assert job.bearer_token == "secret-token"
        
        original_updated_at = job.updated_at
        job.clear_bearer_token()
        
        assert job.bearer_token is None
        assert job.updated_at > original_updated_at
    
    def test_has_external_job_id_property(self):
        """Test the has_external_job_id property."""
        # With valid external ID
        job1 = Job.create_new("test.mp4", 1000, "mp3", "medium", external_job_id="ext-123")
        assert job1.has_external_job_id is True
        
        # With None external ID
        job2 = Job.create_new("test.mp4", 1000, "mp3", "medium", external_job_id=None)
        assert job2.has_external_job_id is False
        
        # With empty string external ID
        job3 = Job.create_new("test.mp4", 1000, "mp3", "medium", external_job_id="")
        assert job3.has_external_job_id is False


class TestValidationServiceExternalJobId:
    """Test ValidationService external job ID validation."""
    
    def setup_method(self):
        """Set up test fixtures."""
        self.validation_service = ValidationService(
            max_file_size_mb=100.0,
            supported_video_formats=['.mp4', '.avi'],
            supported_audio_formats=['mp3', 'aac']
        )
    
    def test_validate_external_job_id_valid(self):
        """Test validation of valid external job IDs."""
        # Valid alphanumeric
        self.validation_service.validate_external_job_id("job123")
        
        # Valid with underscores and hyphens
        self.validation_service.validate_external_job_id("job_123-abc")
        
        # Valid single character
        self.validation_service.validate_external_job_id("a")
        
        # Valid 50 characters (max length)
        long_id = "a" * 50
        self.validation_service.validate_external_job_id(long_id)
        
        # Valid None (optional field)
        self.validation_service.validate_external_job_id(None)
        
        # Valid empty string (optional field)
        self.validation_service.validate_external_job_id("")
    
    def test_validate_external_job_id_invalid(self):
        """Test validation of invalid external job IDs."""
        # Too long (51 characters)
        with pytest.raises(ValidationError, match="must be 50 characters or less"):
            long_id = "a" * 51
            self.validation_service.validate_external_job_id(long_id)
        
        # Contains invalid characters
        with pytest.raises(ValidationError, match="must contain only alphanumeric"):
            self.validation_service.validate_external_job_id("job@123")
        
        with pytest.raises(ValidationError, match="must contain only alphanumeric"):
            self.validation_service.validate_external_job_id("job 123")  # space
        
        with pytest.raises(ValidationError, match="must contain only alphanumeric"):
            self.validation_service.validate_external_job_id("job.123")  # dot
        
        with pytest.raises(ValidationError, match="must contain only alphanumeric"):
            self.validation_service.validate_external_job_id("job/123")  # slash


class TestJobRepositoryWithExternalId:
    """Test InMemoryJobRepository with external job ID support."""
    
    def setup_method(self):
        """Set up test fixtures."""
        self.repo = InMemoryJobRepository()
    
    @pytest.mark.asyncio
    async def test_create_job_with_external_id(self):
        """Test creating a job with external job ID."""
        job = await self.repo.create(
            job_id="internal-123",
            filename="test.mp4",
            file_size_mb=10.0,
            output_format="mp3",
            quality="medium",
            external_job_id="ext-job-456",
            bearer_token="bearer-xyz"
        )
        
        assert job.id == "internal-123"
        assert job.external_job_id == "ext-job-456"
        assert job.bearer_token == "bearer-xyz"
        assert job.filename == "test.mp4"
    
    @pytest.mark.asyncio
    async def test_create_job_without_external_id(self):
        """Test creating a job without external job ID (backwards compatibility)."""
        job = await self.repo.create(
            job_id="internal-123",
            filename="test.mp4",
            file_size_mb=10.0,
            output_format="mp3",
            quality="medium"
        )
        
        assert job.id == "internal-123"
        assert job.external_job_id is None
        assert job.bearer_token is None
    
    @pytest.mark.asyncio
    async def test_duplicate_external_job_id_raises_error(self):
        """Test that duplicate external job IDs raise an error."""
        # Create first job
        await self.repo.create(
            job_id="internal-1",
            filename="test1.mp4",
            file_size_mb=10.0,
            output_format="mp3",
            quality="medium",
            external_job_id="duplicate-id"
        )
        
        # Try to create second job with same external ID
        with pytest.raises(DuplicateExternalJobIdError) as exc_info:
            await self.repo.create(
                job_id="internal-2",
                filename="test2.mp4",
                file_size_mb=20.0,
                output_format="aac",
                quality="high",
                external_job_id="duplicate-id"
            )
        
        assert exc_info.value.external_job_id == "duplicate-id"
        assert "already exists" in str(exc_info.value)
    
    @pytest.mark.asyncio
    async def test_get_by_external_id_success(self):
        """Test retrieving a job by external job ID."""
        # Create job with external ID
        await self.repo.create(
            job_id="internal-123",
            filename="test.mp4",
            file_size_mb=10.0,
            output_format="mp3",
            quality="medium",
            external_job_id="ext-job-456"
        )
        
        # Retrieve by external ID
        job = await self.repo.get_by_external_id("ext-job-456")
        
        assert job is not None
        assert job.id == "internal-123"
        assert job.external_job_id == "ext-job-456"
    
    @pytest.mark.asyncio
    async def test_get_by_external_id_not_found(self):
        """Test retrieving a job by non-existent external job ID."""
        job = await self.repo.get_by_external_id("non-existent-id")
        assert job is None
    
    @pytest.mark.asyncio
    async def test_get_by_internal_id_still_works(self):
        """Test that retrieving by internal ID still works."""
        # Create job with external ID
        await self.repo.create(
            job_id="internal-123",
            filename="test.mp4",
            file_size_mb=10.0,
            output_format="mp3",
            quality="medium",
            external_job_id="ext-job-456"
        )
        
        # Retrieve by internal ID
        job = await self.repo.get("internal-123")
        
        assert job is not None
        assert job.id == "internal-123"
        assert job.external_job_id == "ext-job-456"
    
    @pytest.mark.asyncio
    async def test_clear_bearer_token(self):
        """Test clearing bearer token from repository."""
        # Create job with bearer token
        await self.repo.create(
            job_id="internal-123",
            filename="test.mp4",
            file_size_mb=10.0,
            output_format="mp3",
            quality="medium",
            bearer_token="secret-token"
        )
        
        # Verify token exists
        job = await self.repo.get("internal-123")
        assert job.bearer_token == "secret-token"
        
        # Clear token
        result = await self.repo.clear_bearer_token("internal-123")
        assert result is True
        
        # Verify token cleared
        job = await self.repo.get("internal-123")
        assert job.bearer_token is None
    
    @pytest.mark.asyncio
    async def test_clear_bearer_token_nonexistent_job(self):
        """Test clearing bearer token for non-existent job."""
        result = await self.repo.clear_bearer_token("non-existent-id")
        assert result is False
    
    @pytest.mark.asyncio
    async def test_delete_job_with_external_id(self):
        """Test deleting a job removes it from external ID index."""
        # Create job with external ID
        await self.repo.create(
            job_id="internal-123",
            filename="test.mp4",
            file_size_mb=10.0,
            output_format="mp3",
            quality="medium",
            external_job_id="ext-job-456"
        )
        
        # Verify job exists
        job = await self.repo.get_by_external_id("ext-job-456")
        assert job is not None
        
        # Delete job
        result = await self.repo.delete("internal-123")
        assert result is True
        
        # Verify job no longer accessible by external ID
        job = await self.repo.get_by_external_id("ext-job-456")
        assert job is None
        
        # Verify job no longer accessible by internal ID
        job = await self.repo.get("internal-123")
        assert job is None
    
    @pytest.mark.asyncio
    async def test_multiple_jobs_with_external_ids(self):
        """Test managing multiple jobs with different external IDs."""
        # Create multiple jobs
        await self.repo.create("internal-1", "test1.mp4", 10.0, "mp3", "medium", "ext-1")
        await self.repo.create("internal-2", "test2.mp4", 20.0, "aac", "high", "ext-2")
        await self.repo.create("internal-3", "test3.mp4", 30.0, "wav", "low")  # No external ID
        
        # Verify all can be retrieved correctly
        job1 = await self.repo.get_by_external_id("ext-1")
        assert job1.id == "internal-1"
        
        job2 = await self.repo.get_by_external_id("ext-2")
        assert job2.id == "internal-2"
        
        job3 = await self.repo.get("internal-3")
        assert job3.external_job_id is None
        
        # Verify external ID lookup for job without external ID returns None
        job3_by_ext = await self.repo.get_by_external_id("internal-3")
        assert job3_by_ext is None