package httpapi

import (
	"net/http"

	"github.com/jackc/pgx/v5/pgxpool"

	"github.com/mitbringsl/backend/internal/config"
)

// API bundles all handler groups and wires the router.
// Handler groups are added in subsequent phases (auth, lists, items, suggestions).
type API struct {
	cfg  *config.Config
	pool *pgxpool.Pool

	health *HealthHandler
}

// NewAPI constructs the API with all handler groups.
func NewAPI(cfg *config.Config, pool *pgxpool.Pool) *API {
	return &API{
		cfg:    cfg,
		pool:   pool,
		health: &HealthHandler{Pool: pool},
	}
}

// Handler returns the fully wired http.Handler with all middleware applied.
func (a *API) Handler() http.Handler {
	mux := http.NewServeMux()

	// --- public health endpoints (no auth) ---
	mux.HandleFunc("GET /healthz", a.health.Healthz)
	mux.HandleFunc("GET /readyz", a.health.Readyz)

	// --- auth endpoints (added in Phase B) ---
	// mux.HandleFunc("POST /auth/register", a.auth.Register)
	// mux.HandleFunc("POST /auth/login", a.auth.Login)
	// mux.HandleFunc("POST /auth/oidc", a.auth.OIDC)
	// mux.HandleFunc("POST /auth/logout", a.auth.Logout)

	// --- authenticated API endpoints (added in Phase C) ---
	// mux.HandleFunc("GET /api/lists", a.requireAuth(a.lists.List))
	// mux.HandleFunc("GET /api/lists/{id}/ops", a.requireAuth(a.items.PullOps))
	// mux.HandleFunc("POST /api/lists/{id}/ops", a.requireAuth(a.items.PushOps))
	// mux.HandleFunc("GET /api/suggestions", a.requireAuth(a.suggest.Suggest))

	return Chain(
		mux,
		requestIDMiddleware,
		loggingMiddleware,
		recoverMiddleware,
		corsMiddleware(a.cfg),
	)
}