# app/modules/analytics/schemas/stats.py
"""
Analytics module schemas for statistics and reporting.

Base dashboard schemas are defined in core.schemas.dashboard.
This module re-exports them for backward compatibility and adds
analytics-specific schemas (trends, reports, etc.).
"""

from datetime import datetime
from decimal import Decimal
from typing import Any

from pydantic import BaseModel, Field

# Re-export base dashboard schemas from core for backward compatibility
# These are the canonical definitions in core module
from app.modules.core.schemas.dashboard import (
    AdminDashboardResponse,
    ImportStatsResponse,
    MarketplaceStatsResponse,
    OrderStatsBasicResponse,
    PlatformStatsResponse,
    ProductStatsResponse,
    StatsResponse,
    UserStatsResponse,
    VendorCustomerStats,
    VendorDashboardStatsResponse,
    VendorInfo,
    VendorOrderStats,
    VendorProductStats,
    VendorRevenueStats,
    VendorStatsResponse,
)


# ============================================================================
# Vendor Analytics (Analytics-specific, not in core)
# ============================================================================


class VendorAnalyticsImports(BaseModel):
    """Vendor import analytics."""

    count: int = Field(0, description="Number of imports in period")


class VendorAnalyticsCatalog(BaseModel):
    """Vendor catalog analytics."""

    products_added: int = Field(0, description="Products added in period")


class VendorAnalyticsInventory(BaseModel):
    """Vendor inventory analytics."""

    total_locations: int = Field(0, description="Total inventory locations")


class VendorAnalyticsResponse(BaseModel):
    """Vendor analytics response schema.

    Used by: GET /api/v1/vendor/analytics
    """

    period: str = Field(..., description="Analytics period (e.g., '30d')")
    start_date: str = Field(..., description="Period start date")
    imports: VendorAnalyticsImports
    catalog: VendorAnalyticsCatalog
    inventory: VendorAnalyticsInventory


# ============================================================================
# Code Quality Dashboard Statistics
# ============================================================================


class ValidatorStats(BaseModel):
    """Statistics for a single validator type."""

    total_violations: int = 0
    errors: int = 0
    warnings: int = 0
    last_scan: str | None = None


class CodeQualityDashboardStatsResponse(BaseModel):
    """Code quality dashboard statistics response schema.

    Used by: GET /api/v1/admin/code-quality/stats

    Supports multiple validator types: architecture, security, performance.
    When validator_type is specified, returns stats for that type only.
    When not specified, returns combined stats with per-validator breakdown.
    """

    total_violations: int
    errors: int
    warnings: int
    info: int = 0
    open: int
    assigned: int
    resolved: int
    ignored: int
    technical_debt_score: int
    trend: list[dict[str, Any]] = Field(default_factory=list)
    by_severity: dict[str, Any] = Field(default_factory=dict)
    by_rule: dict[str, Any] = Field(default_factory=dict)
    by_module: dict[str, Any] = Field(default_factory=dict)
    top_files: list[dict[str, Any]] = Field(default_factory=list)
    last_scan: str | None = None
    validator_type: str | None = None  # Set when filtering by type
    by_validator: dict[str, ValidatorStats] = Field(
        default_factory=dict,
        description="Per-validator breakdown (architecture, security, performance)",
    )


# ============================================================================
# Customer Statistics (Coming Soon)
# ============================================================================


class CustomerStatsResponse(BaseModel):
    """Schema for customer statistics."""

    customer_id: int
    total_orders: int
    total_spent: Decimal
    average_order_value: Decimal
    last_order_date: datetime | None
    first_order_date: datetime | None
    lifetime_value: Decimal


# ============================================================================
# Order Statistics (Coming Soon)
# ============================================================================


class OrderStatsResponse(BaseModel):
    """Schema for order statistics."""

    total_orders: int
    pending_orders: int
    processing_orders: int
    shipped_orders: int
    delivered_orders: int
    cancelled_orders: int
    total_revenue: Decimal
    average_order_value: Decimal


__all__ = [
    # Re-exported from core.schemas.dashboard (for backward compatibility)
    "StatsResponse",
    "MarketplaceStatsResponse",
    "ImportStatsResponse",
    "UserStatsResponse",
    "VendorStatsResponse",
    "ProductStatsResponse",
    "PlatformStatsResponse",
    "OrderStatsBasicResponse",
    "AdminDashboardResponse",
    "VendorProductStats",
    "VendorOrderStats",
    "VendorCustomerStats",
    "VendorRevenueStats",
    "VendorInfo",
    "VendorDashboardStatsResponse",
    # Analytics-specific schemas
    "VendorAnalyticsImports",
    "VendorAnalyticsCatalog",
    "VendorAnalyticsInventory",
    "VendorAnalyticsResponse",
    "ValidatorStats",
    "CodeQualityDashboardStatsResponse",
    "CustomerStatsResponse",
    "OrderStatsResponse",
]