# app/modules/billing/routes/pages/platform.py
"""
Billing Platform Page Routes (HTML rendering).

Platform (unauthenticated) pages for pricing and signup:
- Pricing page
- Signup wizard
- Signup success
"""

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

from app.core.database import get_db
from app.modules.core.utils.page_context import get_platform_context
from app.templates_config import templates

router = APIRouter()


def _get_tiers_data(db: Session) -> list[dict]:
    """Build tier data for display in templates from database."""
    from app.modules.billing.models import SubscriptionTier, TierCode

    tiers_db = (
        db.query(SubscriptionTier)
        .filter(
            SubscriptionTier.is_active == True,
            SubscriptionTier.is_public == True,
        )
        .order_by(SubscriptionTier.display_order)
        .all()
    )

    tiers = []
    for tier in tiers_db:
        feature_codes = sorted(tier.get_feature_codes())
        tiers.append({
            "code": tier.code,
            "name": tier.name,
            "price_monthly": tier.price_monthly_cents / 100,
            "price_annual": (tier.price_annual_cents / 100) if tier.price_annual_cents else None,
            "feature_codes": feature_codes,
            "products_limit": tier.get_limit_for_feature("products_limit"),
            "orders_per_month": tier.get_limit_for_feature("orders_per_month"),
            "team_members": tier.get_limit_for_feature("team_members"),
            "is_popular": tier.code == TierCode.PROFESSIONAL.value,
            "is_enterprise": tier.code == TierCode.ENTERPRISE.value,
        })
    return tiers


# ============================================================================
# PRICING PAGE
# ============================================================================


@router.get("/pricing", response_class=HTMLResponse, name="platform_pricing")
async def pricing_page(
    request: Request,
    db: Session = Depends(get_db),
):
    """
    Standalone pricing page with detailed tier comparison.
    """
    context = get_platform_context(request, db)
    context["tiers"] = _get_tiers_data(db)
    context["page_title"] = "Pricing"

    return templates.TemplateResponse(
        "billing/platform/pricing.html",
        context,
    )


# ============================================================================
# SIGNUP WIZARD
# ============================================================================


@router.get("/signup", response_class=HTMLResponse, name="platform_signup")
async def signup_page(
    request: Request,
    tier: str | None = None,
    annual: bool = False,
    db: Session = Depends(get_db),
):
    """
    Multi-step signup wizard.

    Query params:
    - tier: Pre-selected tier code
    - annual: Pre-select annual billing
    """
    context = get_platform_context(request, db)
    context["page_title"] = "Start Your Free Trial"
    context["selected_tier"] = tier
    context["is_annual"] = annual
    context["tiers"] = _get_tiers_data(db)

    return templates.TemplateResponse(
        "billing/platform/signup.html",
        context,
    )


@router.get(
    "/signup/success", response_class=HTMLResponse, name="platform_signup_success"
)
async def signup_success_page(
    request: Request,
    store_code: str | None = None,
    db: Session = Depends(get_db),
):
    """
    Signup success page.

    Shown after successful account creation.
    """
    context = get_platform_context(request, db)
    context["page_title"] = "Welcome to Orion!"
    context["store_code"] = store_code

    return templates.TemplateResponse(
        "billing/platform/signup-success.html",
        context,
    )