"""BAN YARO — Übungs- & Trainingsfortschritt"""

from fastapi import APIRouter, Depends
from pydantic import BaseModel
from typing import Optional
from database import db
from auth import get_current_user

router = APIRouter()

# ------------------------------------------------------------------
# Übungs-Status
# ------------------------------------------------------------------
class ProgressUpdate(BaseModel):
    exercise_id: str
    status: Optional[str] = None  # null/noch-nicht/manchmal/meistens/sitzt

@router.get("/progress")
async def get_progress(user=Depends(get_current_user)):
    uid = user["id"]
    with db() as conn:
        rows = conn.execute(
            "SELECT exercise_id, status, updated_at FROM exercise_progress WHERE user_id=?",
            (uid,)
        ).fetchall()
    return [dict(r) for r in rows]

@router.post("/progress")
async def upsert_progress(body: ProgressUpdate, user=Depends(get_current_user)):
    uid = user["id"]
    with db() as conn:
        conn.execute("""
            INSERT INTO exercise_progress (user_id, exercise_id, status)
            VALUES (?,?,?)
            ON CONFLICT(user_id, exercise_id) DO UPDATE
            SET status=excluded.status, updated_at=datetime('now')
        """, (uid, body.exercise_id, body.status))
    return {"ok": True}

# ------------------------------------------------------------------
# Trainingsplan-Checkboxen
# ------------------------------------------------------------------
class PlanProgress(BaseModel):
    item_key: str
    checked: bool

@router.get("/plan-progress")
async def get_plan_progress(user=Depends(get_current_user)):
    uid = user["id"]
    with db() as conn:
        rows = conn.execute(
            "SELECT item_key, checked FROM training_plan_progress WHERE user_id=?",
            (uid,)
        ).fetchall()
    return [dict(r) for r in rows]

@router.post("/plan-progress")
async def upsert_plan_progress(body: PlanProgress, user=Depends(get_current_user)):
    uid = user["id"]
    with db() as conn:
        if body.checked:
            conn.execute("""
                INSERT OR REPLACE INTO training_plan_progress (user_id, item_key, checked)
                VALUES (?,?,1)
            """, (uid, body.item_key))
        else:
            conn.execute(
                "DELETE FROM training_plan_progress WHERE user_id=? AND item_key=?",
                (uid, body.item_key)
            )
    return {"ok": True}

# ------------------------------------------------------------------
# Empfehlungen (rule-based)
# ------------------------------------------------------------------
GRUNDKOMMANDOS_ORDER = ['Sitz', 'Platz', 'Bleib', 'Hier / Komm', 'Fuß', 'Aus / Lass es', 'Warte']
TRICKS_FIRST = ['Pfote / Schütteln', 'Dreh', 'Auf die Decke', 'Nasenarbeit / Suchen']

@router.get("/suggestions")
async def get_suggestions(user=Depends(get_current_user)):
    uid = user["id"]
    with db() as conn:
        rows = conn.execute(
            "SELECT exercise_id, status FROM exercise_progress WHERE user_id=?",
            (uid,)
        ).fetchall()

    progress = {r["exercise_id"]: r["status"] for r in rows}

    def key(name): return f"grundkommandos_{name.replace(' ', '_').replace('/', '')}"
    def tkey(name): return f"tricks_{name.replace(' ', '_').replace('/', '')}"

    suggestions = []

    # Noch-nicht Übungen — direkte Hilfe
    stuck = [n for n in GRUNDKOMMANDOS_ORDER if progress.get(key(n)) == 'noch-nicht']
    if stuck:
        suggestions.append({
            "type": "help",
            "icon": "warning",
            "title": f'\u201e{stuck[0]}\u201c klappt noch nicht',
            "text": "Mach einen Schritt zurück: Kürzere Einheiten, mehr Leckerlis, weniger Ablenkung. Schau dir die Trainingsgrundlagen an.",
            "action_tab": "grundkommandos",
            "action_name": stuck[0],
        })

    # Manchmal-Übungen — intensivieren
    almost = [n for n in GRUNDKOMMANDOS_ORDER if progress.get(key(n)) == 'manchmal']
    if almost:
        suggestions.append({
            "type": "boost",
            "icon": "fire",
            "title": f'Fast da: \u201e{almost[0]}\u201c',
            "text": "Du bist auf dem richtigen Weg! Übe täglich 3–5 Minuten — dann sitzt es bald.",
            "action_tab": "grundkommandos",
            "action_name": almost[0],
        })

    # Nächste ungestartete Grundkommando
    grundk_mastered = [n for n in GRUNDKOMMANDOS_ORDER if progress.get(key(n)) == 'sitzt']
    next_up = next((n for n in GRUNDKOMMANDOS_ORDER
                    if progress.get(key(n)) in (None, 'noch-nicht') and n not in stuck), None)

    if len(grundk_mastered) == len(GRUNDKOMMANDOS_ORDER):
        # Alle Grundkommandos gemeistert → Tricks empfehlen
        next_trick = next((n for n in TRICKS_FIRST if progress.get(tkey(n)) is None), None)
        if next_trick:
            suggestions.append({
                "type": "next",
                "icon": "star",
                "title": "Alle Grundkommandos sitzen! 🎉",
                "text": f'Zeit für Tricks! Starte mit \u201e{next_trick}\u201c \u2014 Spaß garantiert.',
                "action_tab": "tricks",
                "action_name": next_trick,
            })
    elif next_up and not almost:
        suggestions.append({
            "type": "next",
            "icon": "arrow-right",
            "title": f"Bereit für den nächsten Schritt?",
            "text": f'Starte jetzt mit \u201e{next_up}\u201c. {"Du hast bereits " + str(len(grundk_mastered)) + " Grundkommandos gemeistert!" if grundk_mastered else "Es ist die perfekte Basis für alles Weitere."}',
            "action_tab": "grundkommandos",
            "action_name": next_up,
        })
    elif not progress:
        # Noch gar kein Fortschritt
        suggestions.append({
            "type": "start",
            "icon": "flag",
            "title": "Womit fangen wir an?",
            "text": "\u201eSitz\u201c ist das erste Kommando für jeden Hund \u2014 einfach, schnell erlernt und die Basis für alles.",
            "action_tab": "grundkommandos",
            "action_name": "Sitz",
        })

    return suggestions[:2]  # max 2 Empfehlungen