events/models.py

import json
from datetime import datetime

from pydantic import BaseModel, EmailStr, Field, root_validator, validator


class PromoCode(BaseModel):
    code: str
    discount_percent: float = 0.0
    active: bool = True

    # make the promo code uppercase
    @validator("code")
    def uppercase_code(cls, v):
        return v.upper()

    @validator("discount_percent")
    def validate_discount_percent(cls, v):
        assert 0 <= v <= 100, "Discount must be between 0 and 100."
        return v


class EventExtra(BaseModel):
    promo_codes: list[PromoCode] = Field(default_factory=list)
    conditional: bool = False
    min_tickets: int = 1
    email_notifications: bool = False
    nostr_notifications: bool = False
    notification_subject: str = ""
    notification_body: str = ""


class CreateEvent(BaseModel):
    wallet: str | None = None  # filled from caller's wallet if absent
    name: str  # title (required)
    info: str = ""  # description (optional)
    closing_date: str | None = None  # date-only YYYY-MM-DD; defaults to event_end_date
    # ISO 8601: date-only ("2026-05-19") or datetime ("2026-05-19T18:30").
    # Presence of a "T" toggles NIP-52 kind (31922 date / 31923 time).
    event_start_date: str
    event_end_date: str | None = None  # same format as event_start_date
    currency: str = "sat"
    allow_fiat: bool = False
    fiat_currency: str = "GBP"
    amount_tickets: int = 0  # 0 = unlimited / not ticketed
    price_per_ticket: float = 0  # 0 = free
    banner: str | None = None
    location: str | None = None  # venue/address (NIP-52 'location' tag)
    categories: list[str] = Field(default_factory=list)  # NIP-52 't' tags
    extra: EventExtra = Field(default_factory=EventExtra)
    status: str = "approved"  # proposed, approved, rejected


class Event(BaseModel):
    id: str
    wallet: str
    name: str
    info: str = ""
    closing_date: str | None = None
    canceled: bool = False
    event_start_date: str
    event_end_date: str | None = None
    currency: str = "sat"
    allow_fiat: bool = False
    fiat_currency: str = "GBP"
    amount_tickets: int = 0
    price_per_ticket: float = 0
    time: datetime
    sold: int = 0
    banner: str | None = None
    location: str | None = None
    categories: list[str] = Field(default_factory=list)
    extra: EventExtra = Field(default_factory=EventExtra)
    status: str = "approved"
    nostr_event_id: str | None = None
    nostr_event_created_at: int | None = None

    @validator("categories", pre=True)
    def parse_categories(cls, v):
        if isinstance(v, str):
            return json.loads(v) if v else []
        return v or []


class PublicEvent(BaseModel):
    id: str
    name: str
    info: str
    closing_date: str | None = None
    canceled: bool
    event_start_date: str
    event_end_date: str | None = None
    currency: str
    allow_fiat: bool = False
    fiat_currency: str = "GBP"
    price_per_ticket: float
    banner: str | None
    location: str | None = None
    categories: list[str] = Field(default_factory=list)
    extra: EventExtra = Field(default_factory=EventExtra)
    status: str = "approved"  # surfaces "proposed"/"rejected" so SFC can render banner

    @validator("categories", pre=True)
    def parse_categories(cls, v):
        if isinstance(v, str):
            return json.loads(v) if v else []
        return v or []


class EventsSettings(BaseModel):
    """Extension-level settings for the events extension."""

    auto_approve: bool = False  # Skip approval workflow for non-admin users


class TicketExtra(BaseModel):
    applied_promo_code: str | None = None
    sats_paid: int | None = None
    refund_address: str | None = None
    nostr_identifier: str | None = None
    ticket_base_url: str | None = None
    email_notification_sent: bool = False
    nostr_notification_sent: bool = False
    refunded: bool = False


class CreateTicket(BaseModel):
    name: str | None = None
    email: EmailStr | None = None
    user_id: str | None = None  # LNbits user id (alternative to name+email)
    promo_code: str | None = None
    refund_address: str | None = None
    nostr_identifier: str | None = None
    payment_method: str | None = None
    fiat_provider: str | None = None
    # Number of tickets to buy on this single invoice. Bounded so a
    # bad client can't run away with the organizer's capacity.
    quantity: int = Field(default=1, ge=1, le=10)

    @root_validator
    def validate_identifiers(cls, values):
        name = values.get("name")
        email = values.get("email")
        user_id = values.get("user_id")
        if not user_id and not (name and email):
            raise ValueError("Either user_id or both name and email must be provided")
        if user_id and (name or email):
            raise ValueError("Cannot provide both user_id and name/email")
        return values


class Ticket(BaseModel):
    id: str
    wallet: str
    event: str
    name: str | None = None
    email: str | None = None
    user_id: str | None = None
    registered: bool
    paid: bool
    time: datetime
    reg_timestamp: datetime
    extra: TicketExtra = Field(default_factory=TicketExtra)
    # Shared LNbits invoice payment_hash. Equals `id` for single-ticket
    # purchases (legacy + post-migration default). Multi-ticket
    # purchases create N rows sharing one payment_hash so each attendee
    # gets a distinct scannable id while the buyer pays once.
    payment_hash: str | None = None


class PublicTicket(BaseModel):
    event: str
    name: str | None = None
    registered: bool
    paid: bool
    time: datetime
    reg_timestamp: datetime


class TicketPaymentRequest(BaseModel):
    payment_hash: str
    payment_request: str | None = None
    fiat_payment_request: str | None = None
    fiat_provider: str | None = None
    is_fiat: bool = False
    # Row ids created on this invoice — one for single-ticket
    # purchases, N for multi-ticket (each independently scannable at
    # the door). Buyers fetch these after payment to render N QRs in
    # My Tickets.
    ticket_ids: list[str] = Field(default_factory=list)