"""Tests for prompt template service."""

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

from app.db import Base, init_db
from app.prompts.defaults import seed_default_templates
from app.prompts.service import PromptService


def get_test_db():
    engine = create_engine("sqlite:///:memory:")
    Base.metadata.create_all(bind=engine)
    Session = sessionmaker(bind=engine)
    return Session()


def test_seed_and_render():
    db = get_test_db()
    seed_default_templates(db)
    service = PromptService(db)
    rendered = service.render("code_review", None, {"language": "python", "diff": "+x"})
    assert "python" in rendered
    assert "+x" in rendered


def test_create_version_increments():
    db = get_test_db()
    service = PromptService(db)
    v1 = service.create_version("test", "L1", "hello {{ name }}")
    v2 = service.create_version("test", "L1", "hello {{ name }} v2")
    assert v1.version_number == 1
    assert v2.version_number == 2
    versions = service.list_versions("test", "L1")
    assert len(versions) == 2