"""
test_lifestack.py — LifeStack Edge Case Test Suite
Covers: cascade bounds, resource exhaustion, penalties, memory threshold, episode termination.
"""

import sys, os; sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
import copy
import shutil
import pytest

from core.life_state import LifeMetrics, ResourceBudget, DependencyGraph
from core.lifestack_env import LifeStackEnv, LifeStackAction
from core.reward import compute_reward
from intake.simperson import SimPerson
from agent.memory import LifeStackMemory


passed = 0
total  = 11


def report(name, ok, detail=""):
    global passed
    tag = "✅ PASS" if ok else "❌ FAIL"
    passed += ok
    print(f"  {tag}  {name}")
    if detail:
        print(f"         {detail}")


# ─── 1. Cascade Floor Test ────────────────────────────────────────────────────
def test_cascade_floor():
    graph   = DependencyGraph()
    metrics = LifeMetrics()
    # Push liquidity from 70 down by 200 — should clamp at 0, not go negative
    result  = graph.cascade(metrics, {"finances.liquidity": -200.0})
    flat    = result.flatten()
    min_val = min(flat.values())
    report("Cascade floor (metrics >= 0)", min_val >= 0.0,
           f"min metric = {min_val:.2f}")


# ─── 2. Cascade Ceiling Test ─────────────────────────────────────────────────
def test_cascade_ceiling():
    graph   = DependencyGraph()
    metrics = LifeMetrics()
    # Push workload from 70 up by 200 — should clamp at 100
    result  = graph.cascade(metrics, {"career.workload": +200.0})
    flat    = result.flatten()
    max_val = max(flat.values())
    report("Cascade ceiling (metrics <= 100)", max_val <= 100.0,
           f"max metric = {max_val:.2f}")


# ─── 3. Resource Exhaustion Test ──────────────────────────────────────────────
def test_resource_exhaustion():
    budget = ResourceBudget(time_hours=5.0, money_dollars=100.0, energy_units=20.0)
    ok     = budget.deduct(time=10.0, money=0.0, energy=0.0)
    report("Resource exhaustion (deduct returns False, no negative)",
           ok is False and budget.time_hours >= 0,
           f"deduct returned {ok}, time_hours = {budget.time_hours:.1f}")


# ─── 4. Zero Action (Inaction) Penalty Test ───────────────────────────────────
def test_inaction_penalty():
    state = LifeMetrics()
    _, breakdown = compute_reward(state, copy.deepcopy(state), {}, actions_taken=0)
    fired = breakdown["penalties_fired"]
    report("Inaction penalty fires",
           "INACTION_PENALTY" in fired,
           f"penalties_fired = {fired}")


# ─── 5. Critical Floor Penalty Test ──────────────────────────────────────────
def test_critical_floor_penalty():
    before = LifeMetrics()
    after  = copy.deepcopy(before)
    after.physical_health.energy = 15.0       # below 20 threshold
    _, breakdown = compute_reward(before, after, {}, actions_taken=1)
    fired = breakdown["penalties_fired"]
    report("Critical floor penalty fires",
           "CRITICAL_FLOOR_VIOLATION" in fired,
           f"energy = 15.0, penalties_fired = {fired}")


# ─── 6. Cascade Dampening Test ───────────────────────────────────────────────
def test_cascade_dampening():
    graph   = DependencyGraph()
    metrics = LifeMetrics()
    primary_delta = 30.0
    result  = graph.cascade(metrics, {"career.workload": primary_delta})
    flat_before = metrics.flatten()
    flat_after  = result.flatten()

    # First-order target: career.workload should change by exactly primary_delta
    first_order = abs(flat_after["career.workload"] - flat_before["career.workload"])

    # Second-order targets connected via edges from career.workload
    # e.g. mental_wellbeing.stress_level, time.free_hours_per_week
    second_order_deltas = []
    for target, _ in graph.edges.get("career.workload", []):
        delta = abs(flat_after[target] - flat_before[target])
        second_order_deltas.append((target, delta))

    all_smaller = all(d < first_order for _, d in second_order_deltas)
    detail = "; ".join(f"{t}: {d:.2f}" for t, d in second_order_deltas)
    report("Cascade dampening (2nd order < 1st order)",
           all_smaller and len(second_order_deltas) > 0,
           f"1st order = {first_order:.2f} | 2nd order: {detail}")


# ─── 7. SimPerson Uptake Bounds Test ─────────────────────────────────────────
def test_simperson_uptake_bounds():
    person = SimPerson(
        openness=0.5, conscientiousness=0.3, extraversion=0.2,
        agreeableness=0.4, neuroticism=1.0, name="Stressed"
    )
    action_types = ["communicate", "delegate", "rest", "structured_plan",
                    "negotiate", "spend", "exercise", "meditate",
                    "network", "study"]
    results = []
    all_ok  = True
    for at in action_types:
        uptake = person.respond_to_action(at, {"time": 5, "money": 100, "energy": 30}, 100.0)
        results.append((at, uptake))
        if uptake < 0.1 or uptake > 1.0:
            all_ok = False

    detail = ", ".join(f"{a}={u:.2f}" for a, u in results)
    report("SimPerson uptake bounds [0.1, 1.0]",
           all_ok,
           f"uptakes: {detail}")


# ─── 8. Memory Threshold Test ────────────────────────────────────────────────
def test_memory_threshold():
    # Use a fresh isolated memory dir
    test_dir = "./test_memory_tmp"
    if os.path.exists(test_dir):
        shutil.rmtree(test_dir)
    os.makedirs(test_dir, exist_ok=True)
    try:
        memory = LifeStackMemory(silent=True, path=test_dir)
        rewards = [0.5, 1.5, 2.1, 2.5, 3.0]

        for i, r in enumerate(rewards):
            memory.store_trajectory(
                conflict_title="test conflict",
                route_taken=f"action_{i}",
                total_reward=r,
                metrics_diff_str="test_diff",
                reasoning="test reasoning",
            )

        expected = len(rewards)
        actual = memory.collection.count()
        report("Memory storage (all trajectories stored for retrieval filtering)",
               actual == expected,
               f"expected {expected}, stored {actual} (all items regardless of reward)")
    finally:
        shutil.rmtree(test_dir, ignore_errors=True)


# ─── 9. Episode Termination Test ─────────────────────────────────────────────
def test_episode_termination():
    from core.task import Task
    t = Task(id="test", domain="test", goal="test", constraints={}, hidden_state={}, 
             mutable_world={}, visible_world={}, success_conditions=[], 
             failure_conditions=[], event_schedule=[], viable_routes=[], 
             milestones=[], horizon=5, difficulty=1, domain_metadata={})
    env = LifeStackEnv()
    obs = env.reset(task=t)

    done = False
    for _ in range(5):
        obs = env.step(LifeStackAction(
            metric_changes={},
            resource_cost={},
            actions_taken=0,
        ))
        done = obs.done

    report("Episode terminates after horizon steps",
           done is True,
           f"done = {done} after {env.state.step_count} steps")


# ─── 10. Task-Driven Smoke Test ──────────────────────────────────────────────
def test_task_driven_smoke():
    from core.task import FlightCrisisTask
    from core.action_space import ToolActionType
    env = LifeStackEnv()
    task = FlightCrisisTask()
    obs = env.reset(task=task)
    
    # 1. Inspect hidden state
    obs = env.step(LifeStackAction(
        action_type="inspect",
        target="card_available",
        reasoning="Need to know if I can rebook"
    ))
    
    revealed = obs.metadata.get("world_state", {})
    inspect_ok = "card_available" in revealed or "ERROR" not in str(obs.metadata.get("info"))
    
    # 2. Execute route
    # Note: FlightCrisisTask has Route(id="rebook_premium", ...)
    obs = env.step(LifeStackAction(
        action_type="execute",
        target="rebook_premium",
        reasoning="Try rebooking"
    ))
    
    info = obs.metadata.get("info", [])
    route_ok = any("ROUTE_SUCCESS" in msg for msg in info)
    
    report("Task-driven episode (Inspect + Route)",
           route_ok,
           f"info: {info}")


# ─── 11. Full Episode Smoke Test ─────────────────────────────────────────────
@pytest.mark.skipif(
    not os.environ.get("OPENAI_API_KEY") and not os.environ.get("GROQ_API_KEY"),
    reason="Skipped: no API key (OpenAI/Groq) in environment"
)
def test_full_episode_smoke():
    test_dir = "./test_episode_memory_tmp"
    if os.path.exists(test_dir):
        shutil.rmtree(test_dir)
    try:
        from scripts.run_episode import run_episode
        memory = LifeStackMemory(silent=True, path=test_dir)
        result = run_episode(difficulty=1, verbose=False, memory=memory)
        reward = result.get("total_reward", None)
        steps  = result.get("steps", None)
        ok     = isinstance(reward, float) and (steps is None or steps <= 30)
        report("Full episode smoke test",
               ok,
               f"reward = {reward}, steps = {steps}, type = {type(reward).__name__}")
    except Exception as e:
        report("Full episode smoke test", False, f"Exception: {e}")
    finally:
        shutil.rmtree(test_dir, ignore_errors=True)


# ─── Run All ──────────────────────────────────────────────────────────────────
if __name__ == "__main__":
    print("\n" + "=" * 60)
    print("  LifeStack Edge Case Test Suite")
    print("=" * 60 + "\n")

    test_cascade_floor()
    test_cascade_ceiling()
    test_resource_exhaustion()
    test_inaction_penalty()
    test_critical_floor_penalty()
    test_cascade_dampening()
    test_simperson_uptake_bounds()
    test_memory_threshold()
    test_episode_termination()
    test_task_driven_smoke()
    test_full_episode_smoke()

    print("\n" + "=" * 60)
    color = "\033[92m" if passed == total else "\033[91m"
    print(f"  {color}{passed}/{total} tests passed\033[0m")
    print("=" * 60 + "\n")