# app/api/v1/admin/pages.py
"""
Admin HTML page routes using Jinja2 templates.

These routes return rendered HTML pages (response_class=HTMLResponse).
Separate from admin API routes which return JSON data.

All routes require admin authentication except /login.
Authentication failures redirect to /admin/login.

Routes:
- GET /              → Redirect to /admin/login
- GET /login         → Admin login page (no auth)
- GET /dashboard     → Admin dashboard (auth required)
- GET /vendors       → Vendor list page (auth required)
- GET /vendors/create → Create vendor form (auth required)
- GET /vendors/{vendor_code} → Vendor details (auth required)
- GET /vendors/{vendor_code}/edit → Edit vendor form (auth required)
- GET /vendors/{vendor_code}/domains → Vendor domains management (auth required)
- GET /vendors/{vendor_code}/theme → Vendor theme editor (auth required)
- GET /users         → User management page (auth required)
- GET /imports       → Import history page (auth required)
- GET /settings      → Settings page (auth required)
"""

from fastapi import APIRouter, Request, Depends, Path
from fastapi.responses import HTMLResponse, RedirectResponse
from fastapi.templating import Jinja2Templates
from sqlalchemy.orm import Session

from app.api.deps import get_current_admin_user, get_db
from models.database.user import User

router = APIRouter()
templates = Jinja2Templates(directory="app/templates")


# ============================================================================
# PUBLIC ROUTES (No Authentication Required)
# ============================================================================

@router.get("/", response_class=RedirectResponse, include_in_schema=False)
async def admin_root():
    """
    Redirect /admin/ to /admin/login.

    Simple approach:
    - Unauthenticated users → see login form
    - Authenticated users → login page shows form (they can navigate to dashboard)
    """
    return RedirectResponse(url="/admin/login", status_code=302)


@router.get("/login", response_class=HTMLResponse, include_in_schema=False)
async def admin_login_page(request: Request):
    """
    Render admin login page.
    No authentication required.
    """
    return templates.TemplateResponse(
        "admin/login.html",
        {"request": request}
    )


# ============================================================================
# AUTHENTICATED ROUTES (Admin Only)
# ============================================================================

@router.get("/dashboard", response_class=HTMLResponse, include_in_schema=False)
async def admin_dashboard_page(
        request: Request,
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render admin dashboard page.
    Shows platform statistics and recent activity.
    """
    return templates.TemplateResponse(
        "admin/dashboard.html",
        {
            "request": request,
            "user": current_user,
        }
    )


# ============================================================================
# VENDOR MANAGEMENT ROUTES
# ============================================================================

@router.get("/vendors", response_class=HTMLResponse, include_in_schema=False)
async def admin_vendors_list_page(
        request: Request,
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render vendors management page.
    Shows list of all vendors with stats.
    """
    return templates.TemplateResponse(
        "admin/vendors.html",
        {
            "request": request,
            "user": current_user,
        }
    )


@router.get("/vendors/create", response_class=HTMLResponse, include_in_schema=False)
async def admin_vendor_create_page(
        request: Request,
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render vendor creation form.
    """
    return templates.TemplateResponse(
        "admin/vendor-create.html",
        {
            "request": request,
            "user": current_user,
        }
    )


@router.get("/vendors/{vendor_code}", response_class=HTMLResponse, include_in_schema=False)
async def admin_vendor_detail_page(
        request: Request,
        vendor_code: str = Path(..., description="Vendor code"),
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render vendor detail page.
    Shows full vendor information.
    """
    return templates.TemplateResponse(
        "admin/vendor-detail.html",
        {
            "request": request,
            "user": current_user,
            "vendor_code": vendor_code,
        }
    )


@router.get("/vendors/{vendor_code}/edit", response_class=HTMLResponse, include_in_schema=False)
async def admin_vendor_edit_page(
        request: Request,
        vendor_code: str = Path(..., description="Vendor code"),
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render vendor edit form.
    """
    return templates.TemplateResponse(
        "admin/vendor-edit.html",
        {
            "request": request,
            "user": current_user,
            "vendor_code": vendor_code,
        }
    )


# ============================================================================
# VENDOR DOMAINS ROUTES
# ============================================================================

@router.get("/vendors/{vendor_code}/domains", response_class=HTMLResponse, include_in_schema=False)
async def admin_vendor_domains_page(
        request: Request,
        vendor_code: str = Path(..., description="Vendor code"),
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render vendor domains management page.
    Shows custom domains, verification status, and DNS configuration.
    """
    return templates.TemplateResponse(
        "admin/vendor-domains.html",
        {
            "request": request,
            "user": current_user,
            "vendor_code": vendor_code,
        }
    )


# ============================================================================
# VENDOR THEMES ROUTES
# ============================================================================

@router.get("/vendors/{vendor_code}/theme", response_class=HTMLResponse, include_in_schema=False)
async def admin_vendor_theme_page(
        request: Request,
        vendor_code: str = Path(..., description="Vendor code"),
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render vendor theme customization page.
    Allows admins to customize colors, fonts, layout, and branding.
    """
    return templates.TemplateResponse(
        "admin/vendor-theme.html",
        {
            "request": request,
            "user": current_user,
            "vendor_code": vendor_code,
        }
    )


# ============================================================================
# USER MANAGEMENT ROUTES
# ============================================================================

@router.get("/users", response_class=HTMLResponse, include_in_schema=False)
async def admin_users_page(
        request: Request,
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render users management page.
    Shows list of all platform users.
    """
    return templates.TemplateResponse(
        "admin/users.html",
        {
            "request": request,
            "user": current_user,
        }
    )


# ============================================================================
# IMPORT MANAGEMENT ROUTES
# ============================================================================

@router.get("/imports", response_class=HTMLResponse, include_in_schema=False)
async def admin_imports_page(
        request: Request,
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render imports management page.
    Shows import history and status.
    """
    return templates.TemplateResponse(
        "admin/imports.html",
        {
            "request": request,
            "user": current_user,
        }
    )


# ============================================================================
# SETTINGS ROUTES
# ============================================================================

@router.get("/settings", response_class=HTMLResponse, include_in_schema=False)
async def admin_settings_page(
        request: Request,
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render admin settings page.
    Platform configuration and preferences.
    """
    return templates.TemplateResponse(
        "admin/settings.html",
        {
            "request": request,
            "user": current_user,
        }
    )


# ============================================================================
# DEVELOPER TOOLS - COMPONENTS & TESTING
# ============================================================================

@router.get("/components", response_class=HTMLResponse, include_in_schema=False)
async def admin_components_page(
        request: Request,
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render UI components library page.
    Reference for all available UI components.
    """
    return templates.TemplateResponse(
        "admin/components.html",
        {
            "request": request,
            "user": current_user,
        }
    )


@router.get("/icons", response_class=HTMLResponse, include_in_schema=False)
async def admin_icons_page(
    request: Request,
    current_user: User = Depends(get_current_admin_user),
    db: Session = Depends(get_db)
):
    """
    Render icons browser page.
    Browse and search all available icons.
    """
    return templates.TemplateResponse(
        "admin/icons.html",
        {
            "request": request,
            "user": current_user,
        }
    )


@router.get("/testing", response_class=HTMLResponse, include_in_schema=False)
async def admin_testing_hub(
        request: Request,
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render testing hub page.
    Central hub for all test suites and QA tools.
    """
    return templates.TemplateResponse(
        "admin/testing-hub.html",
        {
            "request": request,
            "user": current_user,
        }
    )


@router.get("/test/auth-flow", response_class=HTMLResponse, include_in_schema=False)
async def admin_test_auth_flow(
        request: Request,
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render authentication flow testing page.
    Tests login, logout, token expiration, and protected routes.
    """
    return templates.TemplateResponse(
        "admin/test-auth-flow.html",
        {
            "request": request,
            "user": current_user,
        }
    )


@router.get("/test/vendors-users-migration", response_class=HTMLResponse, include_in_schema=False)
async def admin_test_vendors_users_migration(
        request: Request,
        current_user: User = Depends(get_current_admin_user),
        db: Session = Depends(get_db)
):
    """
    Render vendors and users migration testing page.
    Tests CRUD operations, data migration, and form validation.
    """
    return templates.TemplateResponse(
        "admin/test-vendors-users-migration.html",
        {
            "request": request,
            "user": current_user,
        }
    )