from enum import Enum
from typing import Any, Dict, List, Optional
from pydantic import BaseModel


class QuotationStatus(str, Enum):
    draft = "draft"
    sent = "sent"
    accepted = "accepted"
    rejected = "rejected"


class QuotationItemCreate(BaseModel):
    product_id: Optional[str] = None
    description: Optional[str] = None
    description_en: Optional[str] = None
    description_gr: Optional[str] = None
    unit_type: str = "pcs"  # pcs / kg / m
    unit_cost: float = 0.0
    discount_percent: float = 0.0
    quantity: float = 1.0
    vat_percent: float = 24.0
    sort_order: int = 0


class QuotationItemInDB(QuotationItemCreate):
    id: str
    quotation_id: str
    line_total: float = 0.0


class QuotationCreate(BaseModel):
    customer_id: str
    title: Optional[str] = None
    subtitle: Optional[str] = None
    language: str = "en"  # en / gr
    order_type: Optional[str] = None
    shipping_method: Optional[str] = None
    estimated_shipping_date: Optional[str] = None
    global_discount_label: Optional[str] = None
    global_discount_percent: float = 0.0
    shipping_cost: float = 0.0
    shipping_cost_discount: float = 0.0
    install_cost: float = 0.0
    install_cost_discount: float = 0.0
    extras_label: Optional[str] = None
    extras_cost: float = 0.0
    comments: List[str] = []
    quick_notes: Optional[Dict[str, Any]] = None
    items: List[QuotationItemCreate] = []
    # Client override fields (for this quotation only; customer record is not modified)
    client_org: Optional[str] = None
    client_name: Optional[str] = None
    client_location: Optional[str] = None
    client_phone: Optional[str] = None
    client_email: Optional[str] = None
    # Legacy quotation fields
    is_legacy: bool = False
    legacy_date: Optional[str] = None  # ISO date string, manually set
    legacy_pdf_path: Optional[str] = None  # Nextcloud path to uploaded PDF


class QuotationUpdate(BaseModel):
    title: Optional[str] = None
    subtitle: Optional[str] = None
    language: Optional[str] = None
    status: Optional[QuotationStatus] = None
    order_type: Optional[str] = None
    shipping_method: Optional[str] = None
    estimated_shipping_date: Optional[str] = None
    global_discount_label: Optional[str] = None
    global_discount_percent: Optional[float] = None
    shipping_cost: Optional[float] = None
    shipping_cost_discount: Optional[float] = None
    install_cost: Optional[float] = None
    install_cost_discount: Optional[float] = None
    extras_label: Optional[str] = None
    extras_cost: Optional[float] = None
    comments: Optional[List[str]] = None
    quick_notes: Optional[Dict[str, Any]] = None
    items: Optional[List[QuotationItemCreate]] = None
    # Client override fields
    client_org: Optional[str] = None
    client_name: Optional[str] = None
    client_location: Optional[str] = None
    client_phone: Optional[str] = None
    client_email: Optional[str] = None
    # Legacy quotation fields
    is_legacy: Optional[bool] = None
    legacy_date: Optional[str] = None
    legacy_pdf_path: Optional[str] = None


class QuotationInDB(BaseModel):
    id: str
    quotation_number: str
    customer_id: str
    title: Optional[str] = None
    subtitle: Optional[str] = None
    language: str = "en"
    status: QuotationStatus = QuotationStatus.draft
    order_type: Optional[str] = None
    shipping_method: Optional[str] = None
    estimated_shipping_date: Optional[str] = None
    global_discount_label: Optional[str] = None
    global_discount_percent: float = 0.0
    shipping_cost: float = 0.0
    shipping_cost_discount: float = 0.0
    install_cost: float = 0.0
    install_cost_discount: float = 0.0
    extras_label: Optional[str] = None
    extras_cost: float = 0.0
    comments: List[str] = []
    quick_notes: Dict[str, Any] = {}
    subtotal_before_discount: float = 0.0
    global_discount_amount: float = 0.0
    new_subtotal: float = 0.0
    vat_amount: float = 0.0
    final_total: float = 0.0
    nextcloud_pdf_path: Optional[str] = None
    nextcloud_pdf_url: Optional[str] = None
    created_at: str
    updated_at: str
    items: List[QuotationItemInDB] = []
    # Client override fields
    client_org: Optional[str] = None
    client_name: Optional[str] = None
    client_location: Optional[str] = None
    client_phone: Optional[str] = None
    client_email: Optional[str] = None
    # Legacy quotation fields
    is_legacy: bool = False
    legacy_date: Optional[str] = None
    legacy_pdf_path: Optional[str] = None


class QuotationListItem(BaseModel):
    id: str
    quotation_number: str
    title: Optional[str] = None
    customer_id: str
    status: QuotationStatus
    final_total: float
    created_at: str
    updated_at: str
    nextcloud_pdf_url: Optional[str] = None
    is_legacy: bool = False
    legacy_date: Optional[str] = None
    legacy_pdf_path: Optional[str] = None


class QuotationListResponse(BaseModel):
    quotations: List[QuotationListItem]
    total: int


class NextNumberResponse(BaseModel):
    next_number: str