# app/modules/loyalty/routes/pages/store.py
"""
Loyalty Store Page Routes (HTML rendering).

Store pages for:
- Loyalty terminal (primary daily interface for staff)
- Loyalty members management
- Program view (read-only)
- Program edit (settings)
- Analytics dashboard

Routes follow the standard store convention: /loyalty/...
so they match the menu URLs in definition.py.
"""

import logging

from fastapi import APIRouter, Depends, Path, Request
from fastapi.responses import HTMLResponse, RedirectResponse
from sqlalchemy.orm import Session

from app.api.deps import (
    get_current_store_from_cookie_or_header,
    get_db,
    get_resolved_store_code,
)
from app.modules.core.services.platform_settings_service import (
    platform_settings_service,
)
from app.modules.tenancy.models import Store, User
from app.templates_config import templates

logger = logging.getLogger(__name__)

router = APIRouter()

# Route configuration for module route discovery
# No custom prefix — routes include /loyalty/ in their paths to follow
# the standard store convention: /store/{store_code}/loyalty/...
ROUTE_CONFIG = {
    "tags": ["store-loyalty"],
}


# ============================================================================
# HELPER: Build Store Context
# ============================================================================


def get_store_context(
    request: Request,
    db: Session,
    current_user: User,
    store_code: str,
    **extra_context,
) -> dict:
    """Build template context for store loyalty pages."""
    # Load store from database
    store = db.query(Store).filter(Store.subdomain == store_code).first()

    # Get platform defaults
    platform_config = platform_settings_service.get_storefront_config(db)

    # Resolve with store override
    storefront_locale = platform_config["locale"]
    storefront_currency = platform_config["currency"]

    if store and store.storefront_locale:
        storefront_locale = store.storefront_locale

    context = {
        "request": request,
        "user": current_user,
        "store": store,
        "store_code": store_code,
        "storefront_locale": storefront_locale,
        "storefront_currency": storefront_currency,
        "dashboard_language": store.dashboard_language if store else "en",
    }

    # Add any extra context
    if extra_context:
        context.update(extra_context)

    return context


# ============================================================================
# LOYALTY ROOT (Redirect to Terminal)
# ============================================================================


@router.get(
    "/loyalty",
    response_class=RedirectResponse,
    include_in_schema=False,
)
async def store_loyalty_root(
    store_code: str = Depends(get_resolved_store_code),
    current_user: User = Depends(get_current_store_from_cookie_or_header),
):
    """
    Redirect loyalty root to the terminal (primary daily interface).
    Menu item "Dashboard" points here.
    """
    return RedirectResponse(
        url=f"/store/{store_code}/loyalty/terminal",
        status_code=302,
    )


# ============================================================================
# LOYALTY TERMINAL (Primary Daily Interface)
# ============================================================================


@router.get(
    "/loyalty/terminal",
    response_class=HTMLResponse,
    include_in_schema=False,
)
async def store_loyalty_terminal(
    request: Request,
    store_code: str = Depends(get_resolved_store_code),
    current_user: User = Depends(get_current_store_from_cookie_or_header),
    db: Session = Depends(get_db),
):
    """
    Render loyalty terminal page.
    Primary interface for staff to look up customers, award points, and process redemptions.
    """
    return templates.TemplateResponse(
        "loyalty/store/terminal.html",
        get_store_context(request, db, current_user, store_code),
    )


# ============================================================================
# LOYALTY MEMBERS
# ============================================================================


@router.get(
    "/loyalty/cards",
    response_class=HTMLResponse,
    include_in_schema=False,
)
async def store_loyalty_cards(
    request: Request,
    store_code: str = Depends(get_resolved_store_code),
    current_user: User = Depends(get_current_store_from_cookie_or_header),
    db: Session = Depends(get_db),
):
    """
    Render loyalty members list page.
    Shows all loyalty card holders for this merchant.
    """
    return templates.TemplateResponse(
        "loyalty/store/cards.html",
        get_store_context(request, db, current_user, store_code),
    )


@router.get(
    "/loyalty/cards/{card_id}",
    response_class=HTMLResponse,
    include_in_schema=False,
)
async def store_loyalty_card_detail(
    request: Request,
    store_code: str = Depends(get_resolved_store_code),
    card_id: int = Path(..., description="Loyalty card ID"),
    current_user: User = Depends(get_current_store_from_cookie_or_header),
    db: Session = Depends(get_db),
):
    """
    Render loyalty card detail page.
    Shows card holder info, transaction history, and actions.
    """
    return templates.TemplateResponse(
        "loyalty/store/card-detail.html",
        get_store_context(request, db, current_user, store_code, card_id=card_id),
    )


# ============================================================================
# PROGRAM VIEW (Read-only)
# ============================================================================


@router.get(
    "/loyalty/program",
    response_class=HTMLResponse,
    include_in_schema=False,
)
async def store_loyalty_program(
    request: Request,
    store_code: str = Depends(get_resolved_store_code),
    current_user: User = Depends(get_current_store_from_cookie_or_header),
    db: Session = Depends(get_db),
):
    """
    Render loyalty program view page (read-only).
    Shows program configuration. Edit button shown to merchant owners only.
    """
    return templates.TemplateResponse(
        "loyalty/store/program.html",
        get_store_context(request, db, current_user, store_code),
    )


# ============================================================================
# PROGRAM EDIT (Merchant Owner)
# ============================================================================


@router.get(
    "/loyalty/program/edit",
    response_class=HTMLResponse,
    include_in_schema=False,
)
async def store_loyalty_program_edit(
    request: Request,
    store_code: str = Depends(get_resolved_store_code),
    current_user: User = Depends(get_current_store_from_cookie_or_header),
    db: Session = Depends(get_db),
):
    """
    Render loyalty program edit page.
    Allows merchant owners to create or edit their loyalty program.
    """
    return templates.TemplateResponse(
        "loyalty/store/settings.html",
        get_store_context(request, db, current_user, store_code),
    )


# ============================================================================
# ANALYTICS DASHBOARD
# ============================================================================


@router.get(
    "/loyalty/analytics",
    response_class=HTMLResponse,
    include_in_schema=False,
)
async def store_loyalty_analytics(
    request: Request,
    store_code: str = Depends(get_resolved_store_code),
    current_user: User = Depends(get_current_store_from_cookie_or_header),
    db: Session = Depends(get_db),
):
    """
    Render loyalty analytics dashboard.
    Shows store's loyalty program metrics and trends.
    """
    return templates.TemplateResponse(
        "loyalty/store/analytics.html",
        get_store_context(request, db, current_user, store_code),
    )


# ============================================================================
# ENROLLMENT
# ============================================================================


@router.get(
    "/loyalty/enroll",
    response_class=HTMLResponse,
    include_in_schema=False,
)
async def store_loyalty_enroll(
    request: Request,
    store_code: str = Depends(get_resolved_store_code),
    current_user: User = Depends(get_current_store_from_cookie_or_header),
    db: Session = Depends(get_db),
):
    """
    Render customer enrollment page.
    Staff interface for enrolling new customers into the loyalty program.
    """
    return templates.TemplateResponse(
        "loyalty/store/enroll.html",
        get_store_context(request, db, current_user, store_code),
    )