# 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.billing.models import TIER_LIMITS, TierCode
from app.modules.core.utils.page_context import get_platform_context
from app.templates_config import templates

router = APIRouter()


def _get_tiers_data() -> list[dict]:
    """Build tier data for display in templates."""
    tiers = []
    for tier_code, limits in TIER_LIMITS.items():
        tiers.append(
            {
                "code": tier_code.value,
                "name": limits["name"],
                "price_monthly": limits["price_monthly_cents"] / 100,
                "price_annual": (limits["price_annual_cents"] / 100)
                if limits.get("price_annual_cents")
                else None,
                "orders_per_month": limits.get("orders_per_month"),
                "products_limit": limits.get("products_limit"),
                "team_members": limits.get("team_members"),
                "order_history_months": limits.get("order_history_months"),
                "features": limits.get("features", []),
                "is_popular": tier_code == TierCode.PROFESSIONAL,
                "is_enterprise": tier_code == TierCode.ENTERPRISE,
            }
        )
    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()
    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()

    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,
    vendor_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 Wizamart!"
    context["vendor_code"] = vendor_code

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