# /opt/docker/dev/service_finder/backend/app/models/marketplace/commission.py
"""
CommissionRule: Dynamic, tiered, time-bound commission and reward rules.

Supports:
- L1 rewards (XP/credits for individual referrals)
- L2 commissions (% for company-to-company purchases)
- Tier-based multipliers (Standard, VIP, Platinum)
- Regional overrides (HU, Global, etc.)
- Time-bound promotional campaigns

THOUGHT PROCESS:
- Single table for both L1 and L2 avoids join complexity; nullable fields
  differentiate type-specific values.
- region_code as simple string (ISO 3166-1 alpha-2) follows existing pattern
  (see InsuranceProvider.country_code).
- start_date/end_date as Date (day-granular campaigns, no timezone issues).
- is_campaign boolean enables quick filtering without date parsing.
- UniqueConstraint on 5 columns prevents duplicate rules for the same
  type/tier/region/date combination.
- metadata_json JSONB for future-proof UI fields (colors, icons, tooltips).
"""

import enum
from datetime import datetime, date
from typing import Optional
from sqlalchemy import (
    String, Integer, Float, Boolean, DateTime, Date,
    Text, Enum as SQLEnum, Numeric, UniqueConstraint, text
)
from sqlalchemy.orm import Mapped, mapped_column
from sqlalchemy.dialects.postgresql import UUID as PG_UUID, JSONB
from sqlalchemy.sql import func
from app.database import Base


class CommissionRuleType(str, enum.Enum):
    """
    Két elsődleges jutalom típus:
    - L1_REWARD: XP/kredit jutalom egyéni ajánlóknak (referral)
    - L2_COMMISSION: Százalékos jutalék céges vásárlások után
    """
    L1_REWARD = "L1_REWARD"          # XP/credits for individual referrers
    L2_COMMISSION = "L2_COMMISSION"  # % commission for company purchases


class CommissionTier(str, enum.Enum):
    """Jutalék szintek / rétegek."""
    STANDARD = "STANDARD"
    VIP = "VIP"
    PLATINUM = "PLATINUM"
    ENTERPRISE = "ENTERPRISE"
    CONTRACTED = "CONTRACTED"


class CommissionRule(Base):
    """
    Dinamikus jutalék/jutalom szabályok.

    Minden szabály egy adott típushoz (L1/L2), szinthez (tier),
    régióhoz és opcionális időablakhoz tartozik.

    A lekérdező motor a tranzakció időpontjában érvényes,
    legspecifikusabb szabályt alkalmazza.
    """
    __tablename__ = "commission_rules"
    __table_args__ = (
        UniqueConstraint(
            'rule_type', 'tier', 'region_code',
            'start_date', 'end_date',
            name='uix_commission_rule_unique'
        ),
        {"schema": "marketplace", "extend_existing": True}
    )

    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)

    # --- Rule Classification ---
    rule_type: Mapped[CommissionRuleType] = mapped_column(
        SQLEnum(CommissionRuleType, name="commission_rule_type", schema="marketplace"),
        nullable=False,
        index=True,
        comment="L1_REWARD = XP/kredit jutalom, L2_COMMISSION = % jutalék"
    )

    tier: Mapped[CommissionTier] = mapped_column(
        SQLEnum(CommissionTier, name="commission_tier", schema="marketplace"),
        nullable=False,
        default=CommissionTier.STANDARD,
        index=True,
        comment="Jutalék szint (STANDARD, VIP, PLATINUM, ENTERPRISE)"
    )

    # --- Regional Scope ---
    region_code: Mapped[str] = mapped_column(
        String(10),
        nullable=False,
        default="GLOBAL",
        index=True,
        comment="ISO 3166-1 alpha-2 országkód (pl. 'HU', 'DE') vagy 'GLOBAL'"
    )

    # --- Reward / Commission Values ---
    # L1_REWARD fields
    xp_reward: Mapped[Optional[int]] = mapped_column(
        Integer, nullable=True, default=0,
        comment="L1: XP jutalom értéke"
    )
    credit_reward: Mapped[Optional[int]] = mapped_column(
        Integer, nullable=True, default=0,
        comment="L1: Kredit jutalom értéke"
    )

    # L2_COMMISSION fields
    commission_percent: Mapped[Optional[float]] = mapped_column(
        Numeric(5, 2), nullable=True, default=0.00,
        comment="L2: Jutalék százalék (pl. 5.00 = 5%)"
    )
    upline_commission_percent: Mapped[Optional[float]] = mapped_column(
        Numeric(5, 2), nullable=True, default=0.00,
        comment="L2: Upline (Gen2) jutalék százalék — a közvetlen ajánló feletti szintnek járó jutalék (pl. 2.00 = 2%)"
    )
    renewal_commission_percent: Mapped[Optional[float]] = mapped_column(
        Numeric(5, 2), nullable=True, default=0.00,
        comment="L2: Megújítási jutalék százalék (pl. 2.50 = 2.5%) - havi/éves előfizetés megújításakor járó jutalék"
    )
    commission_max_amount: Mapped[Optional[float]] = mapped_column(
        Numeric(18, 2), nullable=True,
        comment="L2: Maximális jutalék összeg (opcionális felső korlát)"
    )

    # --- Time-Bound Campaign ---
    is_campaign: Mapped[bool] = mapped_column(
        Boolean, default=False, server_default=text("false"),
        comment="TRUE = időkorlátos kampány, FALSE = állandó szabály"
    )
    start_date: Mapped[Optional[date]] = mapped_column(
        Date, nullable=True, index=True,
        comment="Kampány kezdő dátuma (NULL = azonnal érvényes)"
    )
    end_date: Mapped[Optional[date]] = mapped_column(
        Date, nullable=True, index=True,
        comment="Kampány záró dátuma (NULL = nincs lejárat)"
    )

    # --- Metadata ---
    name: Mapped[str] = mapped_column(
        String(200), nullable=False,
        comment="Emberi olvasható szabály név (pl. 'HU VIP Nyári Kampány')"
    )
    description: Mapped[Optional[str]] = mapped_column(
        Text, nullable=True,
        comment="Részletes leírás a szabályról"
    )
    is_active: Mapped[bool] = mapped_column(
        Boolean, default=True, server_default=text("true"), index=True,
        comment="TRUE = aktív és használható, FALSE = letiltva"
    )

    # --- Audit Trail ---
    created_by: Mapped[Optional[int]] = mapped_column(
        Integer, nullable=True,
        comment="Létrehozó admin felhasználó ID"
    )
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now()
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(),
        onupdate=func.now()
    )

    # --- Extensibility ---
    metadata_json: Mapped[Optional[dict]] = mapped_column(
        JSONB, nullable=True, server_default=text("'{}'::jsonb"),
        comment="Bővíthető metaadatok (pl. campaign banner URL, notes)"
    )

    def __repr__(self) -> str:
        return (
            f"<CommissionRule(id={self.id}, type='{self.rule_type}', "
            f"tier='{self.tier}', region='{self.region_code}', "
            f"active={self.is_active})>"
        )