import pytest
import tomli_w
import tomllib
from pathlib import Path
from project_manager import load_project, save_project, default_project, entry_to_str

def test_history_persistence_across_turns(tmp_path):
    proj_path = tmp_path / "manual_slop.toml"
    hist_path = tmp_path / "manual_slop_history.toml"
    
    # 1. Start project
    proj = default_project("test-persistence")
    save_project(proj, proj_path)
    
    # 2. Add a turn
    proj = load_project(proj_path)
    entry1 = {"role": "User", "content": "Hello", "ts": "2026-02-24T13:00:00"}
    proj["discussion"]["discussions"]["main"]["history"].append(entry_to_str(entry1))
    save_project(proj, proj_path)
    
    # Verify separation
    with open(proj_path, "rb") as f:
        p_disk = tomllib.load(f)
    assert "discussion" not in p_disk
    
    with open(hist_path, "rb") as f:
        h_disk = tomllib.load(f)
    assert h_disk["discussions"]["main"]["history"] == ["@2026-02-24T13:00:00\nUser:\nHello"]
    
    # 3. Add another turn
    proj = load_project(proj_path)
    entry2 = {"role": "AI", "content": "Hi there!", "ts": "2026-02-24T13:01:00"}
    proj["discussion"]["discussions"]["main"]["history"].append(entry_to_str(entry2))
    save_project(proj, proj_path)
    
    # Verify persistence
    with open(hist_path, "rb") as f:
        h_disk = tomllib.load(f)
    assert len(h_disk["discussions"]["main"]["history"]) == 2
    assert h_disk["discussions"]["main"]["history"][1] == "@2026-02-24T13:01:00\nAI:\nHi there!"
    
    # 4. Reload and check
    proj_final = load_project(proj_path)
    assert len(proj_final["discussion"]["discussions"]["main"]["history"]) == 2