from odoo.tests.common import TransactionCase, tagged
from odoo.addons.fusion_accounting_ai.services.adapters._base import LLMProvider


@tagged('post_install', '-at_install')
class TestLLMProviderContract(TransactionCase):
    """Every LLM adapter must satisfy the LLMProvider contract."""

    def test_base_class_defines_capability_attrs(self):
        self.assertTrue(hasattr(LLMProvider, 'supports_tool_calling'))
        self.assertTrue(hasattr(LLMProvider, 'supports_streaming'))
        self.assertTrue(hasattr(LLMProvider, 'max_context_tokens'))
        self.assertTrue(hasattr(LLMProvider, 'supports_embeddings'))

    def test_openai_adapter_implements_contract(self):
        from odoo.addons.fusion_accounting_ai.services.adapters.openai_adapter import OpenAIAdapter
        self.assertTrue(issubclass(OpenAIAdapter, LLMProvider))
        adapter = OpenAIAdapter(self.env)
        self.assertIsInstance(adapter.supports_tool_calling, bool)
        self.assertIsInstance(adapter.max_context_tokens, int)

    def test_claude_adapter_implements_contract(self):
        from odoo.addons.fusion_accounting_ai.services.adapters.claude import ClaudeAdapter
        self.assertTrue(issubclass(ClaudeAdapter, LLMProvider))
        adapter = ClaudeAdapter(self.env)
        self.assertIsInstance(adapter.supports_tool_calling, bool)
        self.assertIsInstance(adapter.max_context_tokens, int)

    def test_openai_adapter_uses_configurable_base_url(self):
        self.env['ir.config_parameter'].sudo().set_param(
            'fusion_accounting.openai_base_url', 'http://localhost:1234/v1')
        self.env['ir.config_parameter'].sudo().set_param(
            'fusion_accounting.openai_api_key', 'lm-studio-test-key')
        from odoo.addons.fusion_accounting_ai.services.adapters.openai_adapter import OpenAIAdapter
        adapter = OpenAIAdapter(self.env)
        self.assertEqual(str(adapter.client.base_url).rstrip('/'),
                         'http://localhost:1234/v1')

    def test_openai_adapter_default_base_url_when_unset(self):
        self.env['ir.config_parameter'].sudo().search([
            ('key', '=', 'fusion_accounting.openai_base_url')
        ]).unlink()
        from odoo.addons.fusion_accounting_ai.services.adapters.openai_adapter import OpenAIAdapter
        adapter = OpenAIAdapter(self.env)
        self.assertIn('api.openai.com', str(adapter.client.base_url))