"""
Tests for file status and metrics calculation using FileProcessingStep model.

This test module verifies that:
1. Status calculation uses FileProcessingStep entries correctly
2. Metrics counting uses FileProcessingStep entries correctly
3. Files with completed steps show "completed" not "processing"
"""

import pytest
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker

from app.database import Base
from app.models import FileRecord
from app.utils.step_manager import get_file_overall_status, get_step_summary, initialize_file_steps, update_step_status


@pytest.fixture
def db_session():
    """Create an in-memory SQLite database for testing."""
    engine = create_engine("sqlite:///:memory:")
    Base.metadata.create_all(engine)
    SessionLocal = sessionmaker(bind=engine)
    session = SessionLocal()
    yield session
    session.close()
    Base.metadata.drop_all(engine)


@pytest.mark.unit
class TestFileStatusCalculation:
    """Test file status calculation using FileProcessingStep."""

    def test_status_completed_when_all_steps_success(self, db_session):
        """
        Test that status shows "completed" when all steps are success.
        """
        # Create file and initialize steps
        file_record = FileRecord(
            filehash="test1", original_filename="test.pdf", local_filename="/tmp/test.pdf", file_size=1024
        )
        db_session.add(file_record)
        db_session.commit()

        initialize_file_steps(db_session, file_record.id)

        # Mark all steps as success
        from app.utils.step_manager import MAIN_PROCESSING_STEPS

        for step_name in MAIN_PROCESSING_STEPS:
            update_step_status(db_session, file_record.id, step_name, "success")

        result = get_file_overall_status(db_session, file_record.id)

        assert result["status"] == "completed"
        assert result["has_errors"] is False

    def test_status_processing_when_steps_in_progress(self, db_session):
        """
        Test that status shows "processing" when there are in_progress steps.
        """
        file_record = FileRecord(
            filehash="test2", original_filename="test2.pdf", local_filename="/tmp/test2.pdf", file_size=2048
        )
        db_session.add(file_record)
        db_session.commit()

        initialize_file_steps(db_session, file_record.id)

        # Mark some steps as success, one as in_progress
        update_step_status(db_session, file_record.id, "create_file_record", "success")
        update_step_status(db_session, file_record.id, "check_text", "in_progress")

        result = get_file_overall_status(db_session, file_record.id)

        assert result["status"] == "processing"
        assert result["has_errors"] is False

    def test_status_failed_when_steps_have_failure(self, db_session):
        """
        Test that status shows "failed" when any step has failure status.
        """
        file_record = FileRecord(
            filehash="test3", original_filename="test3.pdf", local_filename="/tmp/test3.pdf", file_size=3072
        )
        db_session.add(file_record)
        db_session.commit()

        initialize_file_steps(db_session, file_record.id)

        # Mark some steps as success, one as failure
        update_step_status(db_session, file_record.id, "create_file_record", "success")
        update_step_status(db_session, file_record.id, "check_text", "success")
        update_step_status(db_session, file_record.id, "extract_text", "failure", error_message="OCR failed")

        result = get_file_overall_status(db_session, file_record.id)

        assert result["status"] == "failed"
        assert result["has_errors"] is True


@pytest.mark.unit
class TestMetricsCounting:
    """Test metrics counting using FileProcessingStep."""

    def test_main_steps_counted_correctly(self, db_session):
        """
        Test that main processing steps are counted correctly.
        """
        file_record = FileRecord(
            filehash="test4", original_filename="test4.pdf", local_filename="/tmp/test4.pdf", file_size=4096
        )
        db_session.add(file_record)
        db_session.commit()

        initialize_file_steps(db_session, file_record.id)

        # Mark some steps with different statuses
        update_step_status(db_session, file_record.id, "create_file_record", "success")
        update_step_status(db_session, file_record.id, "check_text", "success")
        update_step_status(db_session, file_record.id, "extract_text", "in_progress")

        summary = get_step_summary(db_session, file_record.id)

        # Should count each step once
        from app.utils.step_manager import MAIN_PROCESSING_STEPS

        assert summary["total_main_steps"] == len(MAIN_PROCESSING_STEPS)
        assert summary["main"]["success"] == 2
        assert summary["main"]["in_progress"] == 1

    def test_upload_tasks_counted_correctly(self, db_session):
        """
        Test that upload tasks are counted correctly.
        """
        file_record = FileRecord(
            filehash="test5", original_filename="test5.pdf", local_filename="/tmp/test5.pdf", file_size=5120
        )
        db_session.add(file_record)
        db_session.commit()

        initialize_file_steps(db_session, file_record.id)
        from app.utils.step_manager import add_upload_steps

        add_upload_steps(db_session, file_record.id, ["dropbox", "s3", "nextcloud"])

        # Mark upload steps with different statuses
        update_step_status(db_session, file_record.id, "upload_to_dropbox", "success")
        update_step_status(db_session, file_record.id, "upload_to_s3", "failure")
        update_step_status(db_session, file_record.id, "upload_to_nextcloud", "in_progress")

        summary = get_step_summary(db_session, file_record.id)

        # Should count only upload_to_* steps (not queue_* steps)
        assert summary["total_upload_tasks"] == 3
        assert summary["uploads"]["success"] == 1
        assert summary["uploads"]["failure"] == 1
        assert summary["uploads"]["in_progress"] == 1

    def test_accurate_metrics_for_completed_file(self, db_session):
        """
        Test metrics for a file with multiple successful uploads.
        """
        file_record = FileRecord(
            filehash="test6", original_filename="test6.pdf", local_filename="/tmp/test6.pdf", file_size=6144
        )
        db_session.add(file_record)
        db_session.commit()

        initialize_file_steps(db_session, file_record.id)
        from app.utils.step_manager import add_upload_steps

        services = ["dropbox", "s3", "nextcloud", "google_drive", "onedrive", "webdav"]
        add_upload_steps(db_session, file_record.id, services)

        # Mark all uploads as success
        for service in services:
            update_step_status(db_session, file_record.id, f"upload_to_{service}", "success")

        summary = get_step_summary(db_session, file_record.id)

        # Should have 6 upload_to_* tasks
        assert summary["total_upload_tasks"] == 6
        assert summary["uploads"]["success"] == 6
        assert summary["uploads"]["failure"] == 0
        assert summary["uploads"]["in_progress"] == 0