from dataclasses import asdict, dataclass
from datetime import datetime


@dataclass(frozen=True)
class Conditions:
    air_temperature_f: int
    wind_mph: int
    wind_direction: str
    pressure_inhg: float
    pressure_trend: str
    cloud_cover_percent: int
    water_temperature_f: int
    sunrise: str


def demo_conditions(starts_at: datetime) -> Conditions:
    """Stable demo conditions until a live provider adapter is connected."""
    seasonal_water = {12: 52, 1: 49, 2: 53, 3: 61, 4: 69, 5: 76}.get(starts_at.month, 78)
    return Conditions(64 if starts_at.month in (2, 3, 11) else 72, 9, "SW", 29.91, "falling", 58, seasonal_water, "6:42 AM")


def build_bass_plan(starts_at: datetime) -> dict:
    conditions = demo_conditions(starts_at)
    score = min(82 + (4 if conditions.pressure_trend == "falling" else 0) + (3 if 6 <= conditions.wind_mph <= 14 else 0) + (2 if conditions.cloud_cover_percent >= 50 else 0), 95)
    return {
        "bite_score": score,
        "confidence": 0.86,
        "summary": "Start on wind-blown secondary points at first light, then move to shaded wood and dock cover as the sun rises.",
        "conditions": asdict(conditions),
        "primary_pattern": {"name": "Wind-blown points", "depth": "6–12 ft", "structure": "Secondary points with rock, brush, or nearby creek-channel access", "presentation": "Slow-roll across the wind, then pause beside cover"},
        "tackle": {"lure": "3/8 oz chartreuse-white double willow spinnerbait", "rod": "7' medium-heavy, fast action", "reel": "7.1:1 baitcaster", "line": "15 lb fluorocarbon", "backup": "Green-pumpkin Texas-rigged creature bait for protected cover"},
        "evidence": ["A falling pressure trend favors active, roaming bass.", "A 9 mph southwest wind concentrates bait on exposed banks and points.", "Cloud cover extends the moving-bait window after sunrise.", f"Water near {conditions.water_temperature_f}°F supports a moderate retrieve."],
        "professor_finn": "I’d begin on the southwest-facing secondary points and let the wind choose the first three stops. Keep the spinnerbait moving until you contact fish. If the wind fades or the sun becomes direct, slow down with the Texas rig around shaded wood and the darkest dock edges.",
        "data_status": "Demo conditions — live weather provider not connected yet",
    }