# app/modules/analytics/services/analytics_features.py
"""
Analytics feature provider for the billing feature system.

Declares analytics-related billable features (dashboard access, report types,
export capabilities). All features are binary (on/off) at the merchant level,
so no usage tracking queries are needed.
"""

from __future__ import annotations

import logging
from typing import TYPE_CHECKING

from sqlalchemy import func

from app.modules.contracts.features import (
    FeatureDeclaration,
    FeatureProviderProtocol,
    FeatureScope,
    FeatureType,
    FeatureUsage,
)

if TYPE_CHECKING:
    from sqlalchemy.orm import Session

logger = logging.getLogger(__name__)


class AnalyticsFeatureProvider:
    """Feature provider for the analytics module.

    Declares:
    - analytics_dashboard: binary merchant-level feature for analytics dashboard access
    - basic_reports: binary merchant-level feature for standard reports
    - custom_reports: binary merchant-level feature for custom report builder
    - export_reports: binary merchant-level feature for report data export
    """

    @property
    def feature_category(self) -> str:
        return "analytics"

    def get_feature_declarations(self) -> list[FeatureDeclaration]:
        return [
            FeatureDeclaration(
                code="analytics_dashboard",
                name_key="analytics.features.analytics_dashboard.name",
                description_key="analytics.features.analytics_dashboard.description",
                category="analytics",
                feature_type=FeatureType.BINARY,
                scope=FeatureScope.MERCHANT,
                ui_icon="bar-chart-2",
                display_order=10,
            ),
            FeatureDeclaration(
                code="basic_reports",
                name_key="analytics.features.basic_reports.name",
                description_key="analytics.features.basic_reports.description",
                category="analytics",
                feature_type=FeatureType.BINARY,
                scope=FeatureScope.MERCHANT,
                ui_icon="file-text",
                display_order=20,
            ),
            FeatureDeclaration(
                code="custom_reports",
                name_key="analytics.features.custom_reports.name",
                description_key="analytics.features.custom_reports.description",
                category="analytics",
                feature_type=FeatureType.BINARY,
                scope=FeatureScope.MERCHANT,
                ui_icon="pie-chart",
                display_order=30,
            ),
            FeatureDeclaration(
                code="export_reports",
                name_key="analytics.features.export_reports.name",
                description_key="analytics.features.export_reports.description",
                category="analytics",
                feature_type=FeatureType.BINARY,
                scope=FeatureScope.MERCHANT,
                ui_icon="download",
                display_order=40,
            ),
        ]

    def get_store_usage(
        self,
        db: Session,
        store_id: int,
    ) -> list[FeatureUsage]:
        # All analytics features are binary; no usage tracking needed
        return []

    def get_merchant_usage(
        self,
        db: Session,
        merchant_id: int,
        platform_id: int,
    ) -> list[FeatureUsage]:
        # All analytics features are binary; no usage tracking needed
        return []


# Singleton instance for module registration
analytics_feature_provider = AnalyticsFeatureProvider()

__all__ = [
    "AnalyticsFeatureProvider",
    "analytics_feature_provider",
]