"""
Chart.js-Payloads für Recovery (R1–R5) — gemeinsam mit routers/charts und recovery-dashboard-viz.

Ausgelagert aus routers/charts.py (Issue 53 / Layer 1).
"""

from __future__ import annotations

from datetime import datetime, timedelta
from typing import Any, Dict

from db import get_db, get_cursor
from data_layer.recovery_metrics import (
    calculate_hrv_vs_baseline_pct,
    calculate_recovery_score_v2,
    calculate_rhr_vs_baseline_pct,
    calculate_sleep_debt_hours,
    get_sleep_duration_data,
    get_sleep_quality_data,
)
from data_layer.utils import calculate_confidence, safe_float, serialize_dates


def build_recovery_score_chart_payload(profile_id: str, days: int) -> Dict[str, Any]:
    if days < 7:
        days = 7
    if days > 90:
        days = 90
    current_score = calculate_recovery_score_v2(profile_id)

    if current_score is None:
        return {
            "chart_type": "line",
            "data": {"labels": [], "datasets": []},
            "metadata": {
                "confidence": "insufficient",
                "data_points": 0,
                "message": "Keine Recovery-Daten vorhanden",
            },
        }

    cutoff = (datetime.now() - timedelta(days=days)).strftime("%Y-%m-%d")

    with get_db() as conn:
        cur = get_cursor(conn)
        cur.execute(
            """SELECT date, resting_hr, hrv
               FROM vitals_baseline
               WHERE profile_id=%s AND date >= %s
               ORDER BY date""",
            (profile_id, cutoff),
        )
        rows = cur.fetchall()

    if not rows:
        return {
            "chart_type": "line",
            "data": {
                "labels": [datetime.now().strftime("%Y-%m-%d")],
                "datasets": [
                    {
                        "label": "Recovery Score",
                        "data": [current_score],
                        "borderColor": "#1D9E75",
                        "backgroundColor": "rgba(29, 158, 117, 0.1)",
                        "borderWidth": 2,
                        "tension": 0.3,
                        "fill": True,
                    }
                ],
            },
            "metadata": {
                "confidence": "low",
                "data_points": 1,
                "current_score": current_score,
            },
        }

    labels = [row["date"].isoformat() for row in rows]
    values = [min(100, max(0, safe_float(row["hrv"]) if row["hrv"] else 50)) for row in rows]

    return {
        "chart_type": "line",
        "data": {
            "labels": labels,
            "datasets": [
                {
                    "label": "Recovery Score (proxy)",
                    "data": values,
                    "borderColor": "#1D9E75",
                    "backgroundColor": "rgba(29, 158, 117, 0.1)",
                    "borderWidth": 2,
                    "tension": 0.3,
                    "fill": True,
                }
            ],
        },
        "metadata": serialize_dates(
            {
                "confidence": calculate_confidence(len(rows), days, "general"),
                "data_points": len(rows),
                "current_score": current_score,
                "note": "Score based on HRV proxy; true recovery score calculation in development",
            }
        ),
    }


def build_hrv_rhr_baseline_chart_payload(profile_id: str, days: int) -> Dict[str, Any]:
    if days < 7:
        days = 7
    if days > 90:
        days = 90
    cutoff = (datetime.now() - timedelta(days=days)).strftime("%Y-%m-%d")

    with get_db() as conn:
        cur = get_cursor(conn)
        cur.execute(
            """SELECT date, resting_hr, hrv
               FROM vitals_baseline
               WHERE profile_id=%s AND date >= %s
               ORDER BY date""",
            (profile_id, cutoff),
        )
        rows = cur.fetchall()

    if not rows:
        return {
            "chart_type": "line",
            "data": {"labels": [], "datasets": []},
            "metadata": {
                "confidence": "insufficient",
                "data_points": 0,
                "message": "Keine Vitalwerte vorhanden",
            },
        }

    labels = [row["date"].isoformat() for row in rows]
    hrv_values = [safe_float(row["hrv"]) if row["hrv"] else None for row in rows]
    rhr_values = [safe_float(row["resting_hr"]) if row["resting_hr"] else None for row in rows]

    hrv_baseline = calculate_hrv_vs_baseline_pct(profile_id)
    rhr_baseline = calculate_rhr_vs_baseline_pct(profile_id)

    hrv_filtered = [v for v in hrv_values if v is not None]
    rhr_filtered = [v for v in rhr_values if v is not None]

    avg_hrv = sum(hrv_filtered) / len(hrv_filtered) if hrv_filtered else 50
    avg_rhr = sum(rhr_filtered) / len(rhr_filtered) if rhr_filtered else 60

    datasets = [
        {
            "label": "HRV (ms)",
            "data": hrv_values,
            "borderColor": "#1D9E75",
            "backgroundColor": "rgba(29, 158, 117, 0.1)",
            "borderWidth": 2,
            "tension": 0.3,
            "yAxisID": "y1",
            "fill": False,
        },
        {
            "label": "RHR (bpm)",
            "data": rhr_values,
            "borderColor": "#3B82F6",
            "backgroundColor": "rgba(59, 130, 246, 0.1)",
            "borderWidth": 2,
            "tension": 0.3,
            "yAxisID": "y2",
            "fill": False,
        },
    ]

    return {
        "chart_type": "line",
        "data": {"labels": labels, "datasets": datasets},
        "metadata": serialize_dates(
            {
                "confidence": calculate_confidence(len(rows), days, "general"),
                "data_points": len(rows),
                "avg_hrv": round(avg_hrv, 1),
                "avg_rhr": round(avg_rhr, 1),
                "hrv_vs_baseline_pct": hrv_baseline,
                "rhr_vs_baseline_pct": rhr_baseline,
            }
        ),
    }


def build_sleep_duration_quality_chart_payload(profile_id: str, days: int) -> Dict[str, Any]:
    if days < 7:
        days = 7
    if days > 90:
        days = 90
    duration_data = get_sleep_duration_data(profile_id, days)
    quality_data = get_sleep_quality_data(profile_id, days)

    if duration_data["confidence"] == "insufficient":
        return {
            "chart_type": "line",
            "data": {"labels": [], "datasets": []},
            "metadata": {
                "confidence": "insufficient",
                "data_points": 0,
                "message": "Keine Schlafdaten vorhanden",
            },
        }

    cutoff = (datetime.now() - timedelta(days=days)).strftime("%Y-%m-%d")

    with get_db() as conn:
        cur = get_cursor(conn)
        cur.execute(
            """SELECT date, total_sleep_min
               FROM sleep_log
               WHERE profile_id=%s AND date >= %s
               ORDER BY date""",
            (profile_id, cutoff),
        )
        rows = cur.fetchall()

    if not rows:
        return {
            "chart_type": "line",
            "data": {"labels": [], "datasets": []},
            "metadata": {
                "confidence": "insufficient",
                "data_points": 0,
                "message": "Keine Schlafdaten",
            },
        }

    labels = [row["date"].isoformat() for row in rows]
    duration_hours = [safe_float(row["total_sleep_min"]) / 60 if row["total_sleep_min"] else None for row in rows]

    quality_scores = [(d / 8 * 100) if d else None for d in duration_hours]

    datasets = [
        {
            "label": "Schlafdauer (h)",
            "data": duration_hours,
            "borderColor": "#3B82F6",
            "backgroundColor": "rgba(59, 130, 246, 0.1)",
            "borderWidth": 2,
            "tension": 0.3,
            "yAxisID": "y1",
            "fill": True,
        },
        {
            "label": "Qualität (%)",
            "data": quality_scores,
            "borderColor": "#1D9E75",
            "backgroundColor": "rgba(29, 158, 117, 0.1)",
            "borderWidth": 2,
            "tension": 0.3,
            "yAxisID": "y2",
            "fill": False,
        },
    ]

    return {
        "chart_type": "line",
        "data": {"labels": labels, "datasets": datasets},
        "metadata": serialize_dates(
            {
                "confidence": duration_data["confidence"],
                "data_points": len(rows),
                "avg_duration_hours": round(duration_data["avg_duration_hours"], 1),
                "sleep_quality_score": quality_data.get("sleep_quality_score", 0),
            }
        ),
    }


def build_sleep_debt_chart_payload(profile_id: str, days: int) -> Dict[str, Any]:
    if days < 7:
        days = 7
    if days > 90:
        days = 90
    current_debt = calculate_sleep_debt_hours(profile_id)

    if current_debt is None:
        return {
            "chart_type": "line",
            "data": {"labels": [], "datasets": []},
            "metadata": {
                "confidence": "insufficient",
                "data_points": 0,
                "message": "Keine Schlafdaten für Schulden-Berechnung",
            },
        }

    cutoff = (datetime.now() - timedelta(days=days)).strftime("%Y-%m-%d")

    with get_db() as conn:
        cur = get_cursor(conn)
        cur.execute(
            """SELECT date, total_sleep_min
               FROM sleep_log
               WHERE profile_id=%s AND date >= %s
               ORDER BY date""",
            (profile_id, cutoff),
        )
        rows = cur.fetchall()

    if not rows:
        return {
            "chart_type": "line",
            "data": {"labels": [], "datasets": []},
            "metadata": {
                "confidence": "insufficient",
                "data_points": 0,
                "message": "Keine Schlafdaten",
            },
        }

    labels = [row["date"].isoformat() for row in rows]

    target_hours = 8.0
    cumulative_debt = 0.0
    debt_values = []

    for row in rows:
        actual_hours = safe_float(row["total_sleep_min"]) / 60 if row["total_sleep_min"] else 0
        daily_deficit = target_hours - actual_hours
        cumulative_debt += daily_deficit
        debt_values.append(cumulative_debt)

    return {
        "chart_type": "line",
        "data": {
            "labels": labels,
            "datasets": [
                {
                    "label": "Schlafschuld (Stunden)",
                    "data": debt_values,
                    "borderColor": "#EF4444",
                    "backgroundColor": "rgba(239, 68, 68, 0.1)",
                    "borderWidth": 2,
                    "tension": 0.3,
                    "fill": True,
                }
            ],
        },
        "metadata": serialize_dates(
            {
                "confidence": calculate_confidence(len(rows), days, "general"),
                "data_points": len(rows),
                "current_debt_hours": round(float(current_debt), 1),
                "final_debt_hours": round(float(cumulative_debt), 1),
            }
        ),
    }


def build_vital_signs_matrix_chart_payload(profile_id: str, days: int) -> Dict[str, Any]:
    if days < 7:
        days = 7
    if days > 30:
        days = 30
    cutoff = (datetime.now() - timedelta(days=days)).strftime("%Y-%m-%d")

    with get_db() as conn:
        cur = get_cursor(conn)
        cur.execute(
            """SELECT resting_hr, hrv, vo2_max, spo2, respiratory_rate
               FROM vitals_baseline
               WHERE profile_id=%s AND date >= %s
               ORDER BY date DESC
               LIMIT 1""",
            (profile_id, cutoff),
        )
        vitals_row = cur.fetchone()

        cur.execute(
            """SELECT systolic, diastolic
               FROM blood_pressure_log
               WHERE profile_id=%s AND date >= %s
               ORDER BY date DESC, time DESC
               LIMIT 1""",
            (profile_id, cutoff),
        )
        bp_row = cur.fetchone()

    if not vitals_row and not bp_row:
        return {
            "chart_type": "bar",
            "data": {"labels": [], "datasets": []},
            "metadata": {
                "confidence": "insufficient",
                "data_points": 0,
                "message": "Keine aktuellen Vitalwerte",
            },
        }

    labels = []
    values = []

    if vitals_row:
        if vitals_row["resting_hr"]:
            labels.append("Ruhepuls (bpm)")
            values.append(safe_float(vitals_row["resting_hr"]))
        if vitals_row["hrv"]:
            labels.append("HRV (ms)")
            values.append(safe_float(vitals_row["hrv"]))
        if vitals_row["vo2_max"]:
            labels.append("VO2 Max")
            values.append(safe_float(vitals_row["vo2_max"]))
        if vitals_row["spo2"]:
            labels.append("SpO2 (%)")
            values.append(safe_float(vitals_row["spo2"]))
        if vitals_row["respiratory_rate"]:
            labels.append("Atemfrequenz")
            values.append(safe_float(vitals_row["respiratory_rate"]))

    if bp_row:
        if bp_row["systolic"]:
            labels.append("Blutdruck sys (mmHg)")
            values.append(safe_float(bp_row["systolic"]))
        if bp_row["diastolic"]:
            labels.append("Blutdruck dia (mmHg)")
            values.append(safe_float(bp_row["diastolic"]))

    if not labels:
        return {
            "chart_type": "bar",
            "data": {"labels": [], "datasets": []},
            "metadata": {
                "confidence": "insufficient",
                "data_points": 0,
                "message": "Keine Vitalwerte verfügbar",
            },
        }

    return {
        "chart_type": "bar",
        "data": {
            "labels": labels,
            "datasets": [
                {
                    "label": "Wert",
                    "data": values,
                    "backgroundColor": "#1D9E75",
                    "borderColor": "#085041",
                    "borderWidth": 1,
                }
            ],
        },
        "metadata": {
            "confidence": "medium",
            "data_points": len(values),
            "note": "Latest measurements within last " + str(days) + " days",
        },
    }