from __future__ import annotations

from datetime import date
from decimal import Decimal
from enum import StrEnum

from pydantic import BaseModel, Field


class ExtractionMethod(StrEnum):
    NATIVE_PDF = "native_pdf"
    OCR = "ocr"


class Severity(StrEnum):
    INFO = "info"
    WARNING = "warning"
    ERROR = "error"


class WordBox(BaseModel):
    text: str
    page: int
    x0: float
    y0: float
    x1: float
    y1: float
    method: ExtractionMethod
    confidence: float = Field(ge=0, le=1)


class SourceRef(BaseModel):
    page: int
    bbox: tuple[float, float, float, float]
    method: ExtractionMethod
    confidence: float = Field(ge=0, le=1)


class ExtractedPage(BaseModel):
    number: int
    width: float
    height: float
    words: list[WordBox]
    method: ExtractionMethod
    orientation_degrees: int = 0


class ExtractedDocument(BaseModel):
    source_path: str
    source_filename: str
    sha256: str
    pages: list[ExtractedPage]


class ReportMetadata(BaseModel):
    report_family: str = "turkish_investment_fund_portfolio"
    fund_code: str | None = None
    fund_name: str
    period: str
    source_filename: str
    source_sha256: str


class EquityPosition(BaseModel):
    code: str
    issuer: str
    currency: str
    isin: str
    nominal: Decimal
    purchase_price: Decimal
    purchase_date: date
    contract_no: str | None = None
    current_price: Decimal
    total_value: Decimal
    group_pct: Decimal
    fpd_pct: Decimal
    ftd_pct: Decimal
    source: SourceRef


class RepoPosition(BaseModel):
    code: str
    currency: str
    issuer: str
    maturity_date: date
    days_to_maturity: int
    isin: str
    discount_rate: Decimal
    interest_payment_count: int
    nominal: Decimal
    purchase_price: Decimal
    purchase_date: date
    collateral_amount: Decimal
    contract_no: str
    net_return: Decimal
    daily_value: Decimal
    total_value: Decimal
    group_pct: Decimal
    fpd_pct: Decimal
    ftd_pct: Decimal
    source: SourceRef


class DerivativePosition(BaseModel):
    position_type: str
    code: str
    currency: str
    maturity_date: date | None = None
    nominal: Decimal
    purchase_price: Decimal
    purchase_date: date
    contract_no: str | None = None
    current_price: Decimal
    total_value: Decimal
    group_pct: Decimal
    fpd_pct: Decimal
    ftd_pct: Decimal
    source: SourceRef


class CashCollateral(BaseModel):
    name: str
    currency: str = "TL"
    nominal: Decimal
    total_value: Decimal
    group_pct: Decimal
    fpd_pct: Decimal
    source: SourceRef


class DeclaredTotals(BaseModel):
    equity_nominal: Decimal
    equity_value: Decimal
    equity_fpd_pct: Decimal
    equity_ftd_pct: Decimal
    repo_value: Decimal
    repo_fpd_pct: Decimal
    repo_ftd_pct: Decimal
    derivative_exposure: Decimal
    cash_collateral_value: Decimal
    cash_collateral_fpd_pct: Decimal
    fund_portfolio_value: Decimal


class FundPortfolioReport(BaseModel):
    metadata: ReportMetadata
    equities: list[EquityPosition]
    repos: list[RepoPosition]
    derivatives: list[DerivativePosition]
    cash_collaterals: list[CashCollateral]
    declared_totals: DeclaredTotals


class ValidationFinding(BaseModel):
    severity: Severity
    code: str
    message: str
    sheet: str | None = None
    record_key: str | None = None
    page: int | None = None
    expected: str | None = None
    actual: str | None = None


class ValidationResult(BaseModel):
    status: str
    findings: list[ValidationFinding]
    error_count: int
    warning_count: int
    info_count: int


class GenericRow(BaseModel):
    label: str
    note_reference: str | None = None
    values: list[Decimal | date | str | None]
    hierarchy_level: int = Field(default=0, ge=0, le=8)
    source: SourceRef


class GenericTable(BaseModel):
    table_id: str
    title: str
    sheet_name: str
    semantic_type: str = "financial_table"
    description: str = ""
    unit: str | None = None
    headers: list[str]
    rows: list[GenericRow]
    source_pages: list[int]
    confidence: float = Field(default=0.8, ge=0, le=1)


class GenericDocumentReport(BaseModel):
    report_family: str = "general_financial_document"
    document_title: str
    document_type: str
    summary: str
    source_filename: str
    source_sha256: str
    planner_mode: str
    tables: list[GenericTable]


class PipelineResult(BaseModel):
    output_path: str
    report: FundPortfolioReport | GenericDocumentReport
    validation: ValidationResult