from typing import Any

from sqlalchemy.orm import Session

from app.fitness.service import FitnessService


def get_fitness_snapshot(db: Session, user_id: int) -> dict[str, Any]:
    return FitnessService(db, user_id).snapshot()


def format_fitness_context(snapshot: dict[str, Any]) -> str:
    lines = ["[Фитнес — сводка на сегодня]"]

    profile = snapshot.get("profile")
    if not profile:
        lines.append("Профиль не настроен. set_fitness_profile для целей ккал/БЖУ/воды.")
    else:
        lines.append(
            f"Цели (база): {profile.get('calorie_target')} ккал, "
            f"Б {profile.get('protein_g')} / Ж {profile.get('fat_g')} / У {profile.get('carbs_g')} г, "
            f"вода {profile.get('water_l')} л"
        )
        if profile.get("goal"):
            lines.append(
                f"Цель: {profile.get('goal')}, вес {profile.get('weight_kg')} кг, "
                f"рост {profile.get('height_cm')} см"
            )

    today = snapshot.get("today") or {}
    totals = today.get("totals") or {}
    targets = today.get("targets") or {}
    targets_base = today.get("targets_base") or {}
    activity = today.get("activity") or {}
    steps_total = today.get("steps_total") or 0
    water_l = totals.get("water_ml", 0) / 1000
    water_target = targets.get("water_ml", 2500) / 1000

    if profile and (activity.get("total_bonus_kcal") or steps_total):
        lines.append(
            f"Активность: шаги {steps_total} (база {activity.get('steps_baseline', 0)}), "
            f"бонус +{activity.get('total_bonus_kcal', 0)} ккал"
        )
        base_cal = targets_base.get("calories", profile.get("calorie_target"))
        lines.append(f"Эффективная цель ккал: {base_cal} → {targets.get('calories', base_cal)}")

    lines.append("")
    lines.append(
        f"Съедено: {totals.get('calories', 0):.0f}/{targets.get('calories', 0):.0f} ккал · "
        f"Б {totals.get('protein_g', 0):.0f}/{targets.get('protein_g', 0):.0f} · "
        f"Ж {totals.get('fat_g', 0):.0f}/{targets.get('fat_g', 0):.0f} · "
        f"У {totals.get('carbs_g', 0):.0f}/{targets.get('carbs_g', 0):.0f} г"
    )
    lines.append(f"Вода: {water_l:.1f}/{water_target:.1f} л")

    workouts = today.get("workouts") or []
    if workouts:
        lines.append(f"Тренировок сегодня: {len(workouts)}")

    stats = snapshot.get("workout_stats") or {}
    if stats.get("count"):
        lines.append(
            f"Тренировки за {stats.get('days', 7)} дн.: {stats.get('count')} "
            f"(цель/нед {stats.get('weekly_target')}, серия {stats.get('streak')} дн.)"
        )

    latest = (snapshot.get("body_metrics") or [None])[0]
    if latest:
        lines.append("")
        lines.append("Антропометрия (последняя):")
        parts = [f"{latest.get('weight_kg')} кг"]
        if latest.get("body_fat_pct") is not None:
            method = latest.get("body_fat_method") or "?"
            parts.append(f"жир {latest.get('body_fat_pct')}% ({method})")
        if latest.get("neck_cm"):
            parts.append(f"шея {latest.get('neck_cm')}")
        if latest.get("waist_cm"):
            parts.append(f"талия {latest.get('waist_cm')}")
        if latest.get("hip_cm"):
            parts.append(f"бёдра {latest.get('hip_cm')}")
        if latest.get("whr"):
            parts.append(f"WHR {latest.get('whr')}")
        if latest.get("ffmi"):
            parts.append(f"FFMI {latest.get('ffmi')}")
        lines.append(" · ".join(parts))

    lines.append("")
    lines.append(
        "Правила: log_meal, log_water, log_weight (обхваты → Navy), log_steps, log_workout (date/days_ago), "
        "calc_body_composition (расчёт без записи), get_fitness_summary (date/days_ago), get_fitness_history, "
        "set_fitness_profile, calc_fitness_targets, lookup_food, lookup_exercise. "
        "Еда — оценка LLM (≈), пользователь может уточнить."
    )
    return chr(10).join(lines)