# app/modules/core/schemas/dashboard.py
"""
Dashboard schemas for core module.

These schemas define the response structures for store and admin dashboards.
They're located in core because dashboards are core functionality that should
always be available, regardless of which optional modules are enabled.

The analytics module can extend these with additional functionality (trends,
reports, exports) but the base dashboard schemas live here.
"""

from typing import Any

from pydantic import BaseModel, Field

# ============================================================================
# User Statistics
# ============================================================================


class UserStatsResponse(BaseModel):
    """User statistics response schema.

    Used by: Platform statistics endpoints
    """

    total_users: int = Field(..., description="Total number of users")
    active_users: int = Field(..., description="Number of active users")
    inactive_users: int = Field(..., description="Number of inactive users")
    admin_users: int = Field(..., description="Number of admin users")
    activation_rate: float = Field(..., description="Percentage of active users")


# ============================================================================
# Store Statistics (Admin)
# ============================================================================


class StoreStatsResponse(BaseModel):
    """Store statistics response schema for admin dashboard.

    Used by: GET /api/v1/admin/stores/stats
    """

    total: int = Field(..., description="Total number of stores")
    verified: int = Field(..., description="Number of verified stores")
    pending: int = Field(..., description="Number of pending verification stores")
    inactive: int = Field(..., description="Number of inactive stores")


# ============================================================================
# Product Statistics
# ============================================================================


class ProductStatsResponse(BaseModel):
    """Product statistics response schema.

    Used by: Platform statistics endpoints
    """

    total_products: int = Field(0, description="Total number of products")
    active_products: int = Field(0, description="Number of active products")
    out_of_stock: int = Field(0, description="Number of out-of-stock products")


# ============================================================================
# Order Statistics
# ============================================================================


class OrderStatsBasicResponse(BaseModel):
    """Basic order statistics (stub until Order model is fully implemented).

    Used by: Platform statistics endpoints
    """

    total_orders: int = Field(0, description="Total number of orders")
    pending_orders: int = Field(0, description="Number of pending orders")
    completed_orders: int = Field(0, description="Number of completed orders")


# ============================================================================
# Import Statistics
# ============================================================================


class ImportStatsResponse(BaseModel):
    """Import job statistics response schema.

    Used by: GET /api/v1/admin/marketplace-import-jobs/stats
    """

    total: int = Field(..., description="Total number of import jobs")
    pending: int = Field(..., description="Jobs waiting to start")
    processing: int = Field(..., description="Jobs currently running")
    completed: int = Field(..., description="Successfully completed jobs")
    failed: int = Field(..., description="Failed jobs")
    success_rate: float = Field(..., description="Percentage of successful imports")


# ============================================================================
# Comprehensive Stats
# ============================================================================


class StatsResponse(BaseModel):
    """Comprehensive platform statistics response schema."""

    total_products: int
    unique_brands: int
    unique_categories: int
    unique_marketplaces: int = 0
    unique_stores: int = 0
    total_inventory_entries: int = 0
    total_inventory_quantity: int = 0


class MarketplaceStatsResponse(BaseModel):
    """Statistics per marketplace response schema."""

    marketplace: str
    total_products: int
    unique_stores: int
    unique_brands: int


# ============================================================================
# Platform Statistics (Combined)
# ============================================================================


class PlatformStatsResponse(BaseModel):
    """Combined platform statistics response schema.

    Used by: GET /api/v1/admin/dashboard/stats/platform
    """

    users: UserStatsResponse
    stores: StoreStatsResponse
    products: ProductStatsResponse
    orders: OrderStatsBasicResponse
    imports: ImportStatsResponse


# ============================================================================
# Admin Dashboard Response
# ============================================================================


class AdminDashboardResponse(BaseModel):
    """Admin dashboard response schema.

    Used by: GET /api/v1/admin/dashboard
    """

    platform: dict[str, Any] = Field(..., description="Platform information")
    users: UserStatsResponse
    stores: StoreStatsResponse
    recent_stores: list[dict[str, Any]] = Field(
        default_factory=list, description="Recent stores"
    )
    recent_imports: list[dict[str, Any]] = Field(
        default_factory=list, description="Recent import jobs"
    )


# ============================================================================
# Store Dashboard Statistics
# ============================================================================


class StoreProductStats(BaseModel):
    """Store product statistics."""

    total: int = Field(0, description="Total products in catalog")
    active: int = Field(0, description="Active products")


class StoreOrderStats(BaseModel):
    """Store order statistics."""

    total: int = Field(0, description="Total orders")
    pending: int = Field(0, description="Pending orders")
    completed: int = Field(0, description="Completed orders")


class StoreCustomerStats(BaseModel):
    """Store customer statistics."""

    total: int = Field(0, description="Total customers")
    active: int = Field(0, description="Active customers")


class StoreRevenueStats(BaseModel):
    """Store revenue statistics."""

    total: float = Field(0, description="Total revenue")
    this_month: float = Field(0, description="Revenue this month")


class StoreInfo(BaseModel):
    """Store basic info for dashboard."""

    id: int
    name: str
    store_code: str


class StoreDashboardStatsResponse(BaseModel):
    """Store dashboard statistics response schema.

    Used by: GET /api/v1/store/dashboard/stats
    """

    store: StoreInfo
    products: StoreProductStats
    orders: StoreOrderStats
    customers: StoreCustomerStats
    revenue: StoreRevenueStats


# ============================================================================
# Merchant Dashboard Statistics
# ============================================================================


class MerchantDashboardStatsResponse(BaseModel):
    """Merchant dashboard statistics response schema.

    Used by: GET /api/v1/merchants/core/dashboard/stats
    """

    active_subscriptions: int = Field(0, description="Active or trial subscriptions")
    total_stores: int = Field(0, description="Total stores owned by this merchant")
    total_customers: int = Field(0, description="Total customers across all stores")
    team_members: int = Field(0, description="Distinct active team members across stores")


__all__ = [
    # Stats responses
    "StatsResponse",
    "MarketplaceStatsResponse",
    "ImportStatsResponse",
    "UserStatsResponse",
    "StoreStatsResponse",
    "ProductStatsResponse",
    "PlatformStatsResponse",
    "OrderStatsBasicResponse",
    # Admin dashboard
    "AdminDashboardResponse",
    # Store dashboard
    "StoreProductStats",
    "StoreOrderStats",
    "StoreCustomerStats",
    "StoreRevenueStats",
    "StoreInfo",
    "StoreDashboardStatsResponse",
    # Merchant dashboard
    "MerchantDashboardStatsResponse",
]